Relevant bibliographies by topics / Graphe conceptuel

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Academic literature on the topic 'Graphe conceptuel'

Author: Grafiati
Published: 4 June 2021
Last updated: 22 June 2024

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Journal articles on the topic "Graphe conceptuel"

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Joubert, M., M. Fieschi, and F. Volot. "Review of Biomedical Knowledge and Data Representation with Conceptual Graphs." Methods of Information in Medicine 37, no. 01 (1998): 86–96. http://dx.doi.org/10.1055/s-0038-1634504.

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Abstract:The basis of conceptual graphs theory is an ontology of types of concepts. Concepts issued from the ontology are interlinked by semantic relationships and constitute canonical conceptual graphs. Canonical graphs may be combined to derive new conceptual graphs by means of formation rules. This formalism allows to separate knowledge representation into a conceptual level and a domain-dependent level, and enables to share and reuse a representation. This paper presents conceptual graph applications to biomedical data and concept representation, classification systems, information retrieval, and natural language understanding and processing. A discussion on the unifying role conceptual graphs theory plays in the implementation of knowledge-based systems is also presented.
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Bahtaji, Michael Allan A. "Improving students graphing skills and conceptual understanding using explicit Graphical Physics Instructions." Cypriot Journal of Educational Sciences 15, no. 4 (2020): 843–53. http://dx.doi.org/10.18844/cjes.v15i4.5063.

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The study presented investigates the effects of supportive graphical interventions on the graphing skills and conceptual understanding of students in physics. In this study, the first group of participants was presented with ready-made graphs during the instruction, the second group was instructed on the proper construction and extraction of graphs, while the third group was instructed to construct graphs independently. The groups were compared with respect to their scores in the graphing skills and achievement tests before and after the instructions. The group that received supportive intervention in construction and extraction of graphs attained the highest number of high-level graphs constructed and obtained the highest increase in the achievement test scores after the instruction. The results revealed that the use of the supportive graphical intervention in the construction and extraction of graphs improved the graphing skills and conceptual understanding of students, especially for those who experienced difficulties in dealing graphs.
 
 Keywords: Graphical interventions, construction of graph, interpretation of graph, graphing skills, conceptual understanding;
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Miranda-Jiménez, Sabino, Alexander Gelbukh, and Grigori Sidorov. "Conceptual Graphs as Framework for Summarizing Short Texts." International Journal of Conceptual Structures and Smart Applications 2, no. 2 (2014): 55–75. http://dx.doi.org/10.4018/ijcssa.2014070104.

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In this paper, a conceptual graph-based framework for summarizing short texts is proposed. A semantic representation is implemented through conceptual graph structures that consist of concepts and conceptual relations that stand for texts. To summarize conceptual graphs, the most important nodes are selected using a set of operations: generalization, association, ranking, and pruning, which are described. The importance of nodes on weighted conceptual graphs is measured using a modified version of HITS algorithm. In addition, some heuristic rules are used to keep coherent structures based on information from WordNet (hierarchy of concepts) and VerbNet (semantic patterns of verbs). The experimental results show that this approach is effective in summarizing short texts.
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Redfield, R. C., and S. Krishnan. "Dynamic System Synthesis With a Bond Graph Approach: Part I—Synthesis of One-Port Impedances." Journal of Dynamic Systems, Measurement, and Control 115, no. 3 (1993): 357–63. http://dx.doi.org/10.1115/1.2899110.

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This is the first part of a two-part paper developing a procedure for impedance synthesis and dynamic system conceptual design using a bond graph approach. The first part examines impedance synthesis with bond graphs and develops some useful properties of impedance related to bond graph structure. The second part of the paper uses the impedance synthesis approach as a tool in conceptual design for generating dynamic system solutions meeting frequency domain input-output specifications. In Part I, impedance and transfer functions are directly formulated from bond graphs. An invertible procedure is developed in order to allow for synthesis. Frequency domain properties of bond graphs are developed that will aid in impedance synthesis and the synthesis of bond graph structures from impedance specifications is formulated with a view toward conceptual design. The synthesis is not unique, a given impedance can be synthesized into multiple bond graph structures depending on its complexity. The work presented focuses on the synthesis of passive impedances but may be generalized for active systems.
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CAO, TRU H. "A FORMALISM FOR REPRESENTING AND REASONING WITH LINGUISTIC INFORMATION." International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems 10, no. 03 (2002): 281–307. http://dx.doi.org/10.1142/s021848850200148x.

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Conceptual graphs and fuzzy logic are two logical formalisms that emphasize the target of natural language, where conceptual graphs provide a structure of formulas close to that of natural language sentences while fuzzy logic provides a methodology for computing with words. This paper proposes fuzzy conceptual graphs as a knowledge representation language that combines the advantages of both the two formalisms for artificial intelligence approaching human expression and reasoning. Firstly, the conceptual graph language is extended with functional relation types for representing functional dependency, and conjunctive types for joining concepts and relations. Then fuzzy conceptual graphs are formulated as a generalization of conceptual graphs where fuzzy types and fuzzy attribute-values are used in place of crisp types and crisp attribute-values. Projection and join as basic operations for reasoning on fuzzy conceptual graphs are defined, taking into account the semantics of fuzzy set-based values.
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Van Erven, Gustavo Cordeiro Galvão, Rommel Novaes Carvalho, Waldeyr Mendes Cordeiro da Silva, Sergio Lifschitz, Harley Vera-Olivera, and Maristela Holanda. "Designing Graph Databases With GRAPHED." Journal of Database Management 30, no. 1 (2019): 41–60. http://dx.doi.org/10.4018/jdm.2019010103.

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In recent years, graph database systems have become very popular and been deployed mainly in situations where the relationship between data is significant, such as in social networks. Although they do not require a particular schema design, a data model contributes to their consistency. Designing diagrams is an approach to satisfying this demand for a conceptual data model. While researchers and companies have been developing concepts and notations for graph database modeling, their notations focus on their specific implementations. In this article, the authors propose a diagram to address this lack of a generic and comprehensive notation for graph databases modeling, named GRAPHED (Graph Description Diagram for Graph Databases). The authors verified the effectiveness and compatibility of GRAPHED in two case studies: fraud identification, and a biological network model.
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Ghosh, Swarnendu, Teresa Gonçalves, and Nibaran Das. "Im2Graph: A Weakly Supervised Approach for Generating Holistic Scene Graphs from Regional Dependencies." Future Internet 15, no. 2 (2023): 70. http://dx.doi.org/10.3390/fi15020070.

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Conceptual representations of images involving descriptions of entities and their relations are often represented using scene graphs. Such scene graphs can express relational concepts by using sets of triplets ⟨subject—predicate—object⟩. Instead of building dedicated models for scene graph generation, our model tends to extract the latent relational information implicitly encoded in image captioning models. We explored dependency parsing to build grammatically sound parse trees from captions. We used detection algorithms for the region propositions to generate dense region-based concept graphs. These were optimally combined using the approximate sub-graph isomorphism to create holistic concept graphs for images. The major advantages of this approach are threefold. Firstly, the proposed graph generation module is completely rule-based and, hence, adheres to the principles of explainable artificial intelligence. Secondly, graph generation can be used as plug-and-play along with any region proposition and caption generation framework. Finally, our results showed that we could generate rich concept graphs without explicit graph-based supervision.
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Malaviya, Chaitanya, Chandra Bhagavatula, Antoine Bosselut, and Yejin Choi. "Commonsense Knowledge Base Completion with Structural and Semantic Context." Proceedings of the AAAI Conference on Artificial Intelligence 34, no. 03 (2020): 2925–33. http://dx.doi.org/10.1609/aaai.v34i03.5684.

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Automatic KB completion for commonsense knowledge graphs (e.g., ATOMIC and ConceptNet) poses unique challenges compared to the much studied conventional knowledge bases (e.g., Freebase). Commonsense knowledge graphs use free-form text to represent nodes, resulting in orders of magnitude more nodes compared to conventional KBs ( ∼18x more nodes in ATOMIC compared to Freebase (FB15K-237)). Importantly, this implies significantly sparser graph structures — a major challenge for existing KB completion methods that assume densely connected graphs over a relatively smaller set of nodes.In this paper, we present novel KB completion models that can address these challenges by exploiting the structural and semantic context of nodes. Specifically, we investigate two key ideas: (1) learning from local graph structure, using graph convolutional networks and automatic graph densification and (2) transfer learning from pre-trained language models to knowledge graphs for enhanced contextual representation of knowledge. We describe our method to incorporate information from both these sources in a joint model and provide the first empirical results for KB completion on ATOMIC and evaluation with ranking metrics on ConceptNet. Our results demonstrate the effectiveness of language model representations in boosting link prediction performance and the advantages of learning from local graph structure (+1.5 points in MRR for ConceptNet) when training on subgraphs for computational efficiency. Further analysis on model predictions shines light on the types of commonsense knowledge that language models capture well.
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CAO, TRU H., and DAT T. HUYNH. "SUBSUMPTION DEGREES BETWEEN ENTITY TYPES AND NAMES FOR APPROXIMATE KNOWLEDGE RETRIEVAL." International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems 15, supp01 (2007): 21–42. http://dx.doi.org/10.1142/s0218488507004443.

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The Web has become a huge and indispensable source of information to be used and shared globally, where knowledge is commonly represented and stored in RDF, or alternatively, in conceptual graphs. Managing and searching for web information have gone beyond the relational database model, as the data are semi-structured and inexact answers are often the case. Usually, approximate searching results are due to mismatching between entity types and names in a query and an answer. Firstly, this research work focuses on partial subsumption of a query graph to an answer graph, which is an unsymmetric measure in contrast to similarity. Secondly, it proposes a population-based method for defining subsumption degrees between entity types, one to another, and a class-sensitive soft TF-IDF method for entity names. Lastly, on the one hand, for a user-friendly interface and easily readable query expressions, conceptual graphs are employed at the front-end. On the other hand, in order to take the advantage of the existing platform of SeRQL, an exact RDF query language, the query modification tactic is used to retrieve the knowledge graphs that are close to a query graph, before the subsumption degrees of the query graph to those answer graphs are calculated.
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Wang, Xiang, Xin Wang, Zhaozhuo Li, and Dong Han. "KGNav: A Knowledge Graph Navigational Visual Query System." Proceedings of the VLDB Endowment 16, no. 12 (2023): 3946–49. http://dx.doi.org/10.14778/3611540.3611592.

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Visual query is a vital technique for comprehending and analyzing knowledge graphs, which provides an effective method to lower the barrier of querying knowledge graphs for non-professional users. Nevertheless, visual query techniques for knowledge graphs and ontologies that have emerged in recent years cannot bridge the gap between global information provided by the knowledge graph schema and underlying data of knowledge graph. Thus it cannot fully exploit the global information to navigate users for querying knowledge graphs. This demonstration showcases KGNav, a Knowledge Graph Navigational visual query system. KGNav (1) redefines the minimal unit of operation to abstract the conceptual hierarchy, i.e., Knowledge Graph Schema, in the domain from the original knowledge graph in an offline semi-automatic way through the equivalence relations between these units; it also (2) provides a series of operators and an interactive GUI to capture user query intentions, guiding users to explore the Knowledge Graph Schema to achieve in-depth analysis of knowledge graphs. We will demonstrate the capability of KGNav in reducing tedious queries, enabling users to swiftly grasp the structure of the knowledge graph, and performing queries through several fundamental scenarios.
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Dissertations / Theses on the topic "Graphe conceptuel"

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Barakat-Barbieri, Bruno. "Vers une construction automatique de graphes de concepts." Châtenay-Malabry, Ecole centrale de Paris, 1992. http://www.theses.fr/1992ECAP0416.

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Ce travail propose une méthode de construction automatique de graphes de concepts à partir d'une base de données en texte intégral. La terminologie significative est extraite et normalisée à l'aide d'un traitement linguistique automatique. Le graphe de concepts ainsi construit est un arbre dont les nœuds sont les termes retenus. Les relations sont de nature générique-spécifique. Dans un premier temps, après une étude de la détermination de l'unité sémantique optimale, on introduit la notion de champ sémantique fondée sur la notion de concurrence de termes au sein de cette unité. Puis, après avoir mis en évidence les inconvénients de cette première approche, une nouvelle notion est présentée: les ensembles sémantiques. Ceux-ci sont moins dépendants de la répartition par thèmes des documents. L'étude du recouvrement de ces ensembles sémantiques nous permet de mettre en évidence les liens unissant les concepts entre eux. Une solution pour l'identification des polysèmes est également proposée. Enfin, l'auteur présente une discussion sur la qualité des résultats et les limites de cette approche
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Fougères, Alain-Jérôme. "Aide à la rédaction de spécifications formelles à partir des spécifications rédigées en langage naturel : application aux spécifications de services de France Télécom." Compiègne, 1997. http://www.theses.fr/1997COMP1012.

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L'activité de spécification devient considérable ; une multitude de pages sont écrites tous les jours et la plupart du temps en langage naturel. Pour le CNET, qui réalise des études de services et d'équipements de France Télécom, et qui possède la maîtrise des étapes de spécification et de validation, la nécessité de réduire les temps de développement des services est une priorité. Une condition pour atteindre cet objectif consiste à formaliser le maximum de spécifications produites. Dans ce contexte, nous essayerons de montrer la possibilité d'une certaine automatisation du passage de l'informel au formel, grâce à des méthodes et outils fiables, susceptibles d'assister un expert humain en spécifications. Nous proposons pour cela un processus de formalisation qui s'appuie sur une représentation intermédiaire des spécifications avec le formalisme des graphes conceptuels, avant de dériver une description formelle en Z de la spécification initiale.
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Boudhir, Bechir. "La normalisation des TICE : facette terminologique et application à des situations multilingues." Thesis, Paris 8, 2016. http://www.theses.fr/2016PA080055.

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La normalisation occupe une place primordiale dans le domaine des technologies de l’information et de la communication, ainsi que pour les TICE, en permettant d’assurer une interopérabilité entre les différents systèmes et équipements. Dans ce contexte rentre notre travail de recherche qui vise à reconsidérer la perspective de mise en place des systèmes de gestion de corpus lexicaux homogènes, multilingues, partageables et interopérables, ainsi que la mise en valeur indispensable de la normalisation pour l’éducation et ses retombées bénéfiques en termes d’accessibilité, d’interopérabilité et d’adaptabilité…Une étude expérimentale qui vise à tester certains outils informatiques qui servent à la production et à la gestion d’une terminologie multilingue et normalisée constitue la facette expérimentale de notre travail. L’observation, la comparaison, la découverte et l’analyse du comportement des usagers est faîte à partir d’une enquête<br>Standardization holds a pivotal place in the domain of information and communicationtechnologies as well as for the TICE as it allows for a better harmony between the differentsystems and equipments. Our research project is situated in this context. It aims to reconsiderthe perspective of elaborating systems of management of homogenous, multilingual,shareable and interoperable lexical corpora. It also emphasizes the necessity ofstandardization and its effects on education in terms of accessibility, interoperability andadaptability…An experimental study which aims at testing some computer tools used in theproduction and management of a standardized and multilingual terminology constitutes thecorpus of our work. The observation, comparison, discovery and analysis of users behaviouris based on a survey<br>تحظى المعاییر الدولیة بمكانة ھامة في مجال استعمال تكنولوجیا المعلومات والاتصال ولسیما المتصلة بالتعلیم والتربیة والتكوین. ذلك.ان عملیة التعییر تضمن سلامة التواصل بین مختلف مكونات نظم وأدوات التعلیمفي ھذا الإطار یندرج بحثنا الذي یھدف الى اعادة النظر في نظم انتاج ومعالجة المدونات المعجمیة بطریقة تجعل منھا مدوناتمتجانسة ومتعددة اللغات وقابلة للاستعمال المتبادل. كما نبین من خلال ھذا البحث الحاجة الى وضع جملة من المعاییر الدولیة في.میدان التعلیم تخص طریقة الوصول الى المعلومة والقدرة على التكیف مع النظم التعلیمیةھذا البحث عبارة عن دراسة تجریبیة لبعض البرمجیات الاعلامیة لقصد جعلھا قابلة لإنتاج ومعالجة المصطلحات متعددة اللغات.مطابقة في ذلك المعاییر الدولیة
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Boudhir, Bechir. "La normalisation des TICE : facette terminologique et application à des situations multilingues." Electronic Thesis or Diss., Paris 8, 2016. http://www.theses.fr/2016PA080055.

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La normalisation occupe une place primordiale dans le domaine des technologies de l’information et de la communication, ainsi que pour les TICE, en permettant d’assurer une interopérabilité entre les différents systèmes et équipements. Dans ce contexte rentre notre travail de recherche qui vise à reconsidérer la perspective de mise en place des systèmes de gestion de corpus lexicaux homogènes, multilingues, partageables et interopérables, ainsi que la mise en valeur indispensable de la normalisation pour l’éducation et ses retombées bénéfiques en termes d’accessibilité, d’interopérabilité et d’adaptabilité…Une étude expérimentale qui vise à tester certains outils informatiques qui servent à la production et à la gestion d’une terminologie multilingue et normalisée constitue la facette expérimentale de notre travail. L’observation, la comparaison, la découverte et l’analyse du comportement des usagers est faîte à partir d’une enquête<br>Standardization holds a pivotal place in the domain of information and communicationtechnologies as well as for the TICE as it allows for a better harmony between the differentsystems and equipments. Our research project is situated in this context. It aims to reconsiderthe perspective of elaborating systems of management of homogenous, multilingual,shareable and interoperable lexical corpora. It also emphasizes the necessity ofstandardization and its effects on education in terms of accessibility, interoperability andadaptability…An experimental study which aims at testing some computer tools used in theproduction and management of a standardized and multilingual terminology constitutes thecorpus of our work. The observation, comparison, discovery and analysis of users behaviouris based on a survey<br>تحظى المعاییر الدولیة بمكانة ھامة في مجال استعمال تكنولوجیا المعلومات والاتصال ولسیما المتصلة بالتعلیم والتربیة والتكوین. ذلك.ان عملیة التعییر تضمن سلامة التواصل بین مختلف مكونات نظم وأدوات التعلیمفي ھذا الإطار یندرج بحثنا الذي یھدف الى اعادة النظر في نظم انتاج ومعالجة المدونات المعجمیة بطریقة تجعل منھا مدوناتمتجانسة ومتعددة اللغات وقابلة للاستعمال المتبادل. كما نبین من خلال ھذا البحث الحاجة الى وضع جملة من المعاییر الدولیة في.میدان التعلیم تخص طریقة الوصول الى المعلومة والقدرة على التكیف مع النظم التعلیمیةھذا البحث عبارة عن دراسة تجریبیة لبعض البرمجیات الاعلامیة لقصد جعلھا قابلة لإنتاج ومعالجة المصطلحات متعددة اللغات.مطابقة في ذلك المعاییر الدولیة
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Mechkour, Mourad. "Emir2 : un modèle étendu de présentation et de correspondance d'images pour la recherche d'informations : application a un corpus d'images historiques." Université Joseph Fourier (Grenoble), 1995. http://www.theses.fr/1995GRE10201.

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La définition d'un modèle de documents et d'un modèle de correspondance sont les deux problèmes clé dans le développement d'un système de recherche d'informations. Nous tentons dans le cadre de cette thèse d'apporter des solutions originales à ces deux problèmes pour le cas des documents images, et qui peuvent être généralisées à d'autres types de média. Nous avons donc défini un modèle étendu (EMIR2) qui permet de décrire le contenu des images et de fournir une fonction qui mesure la similarité entre deux images. Dans EMIR2 une image est considérée à la fois comme un objet complexe et multifacettes. Ainsi chaque image est décrite par l'association d'un ensemble de vues dans une structure homogène regroupant les facettes jugées pertinentes pour son contenu. Dans EMIR2 nous considérons essentiellement la vue physique et la vue logique, qui regroupe une vue structurelle, une vue spatiale, une vue perceptive, et des vues symboliques. Ce modèle d'image et son langage de requête ont été formalisé en utilisant un formalisme mathématique. Le modèle de correspondance permet de comparer deux images, dont une pouvant représenter une requête, et d'estimer la valeur mesurant le degré de similarité entre elles. La fonction de correspondance développée est basée sur une extension du modèle logique de recherche d'information. Les éléments de base sont décrits dans un formalisme qui est une extension du formalisme des graphes conceptuels de Sowa
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Ounis, Iadh. "Un modèle d'indexation relationnel pour les graphes conceptuels fondé sur une interprétation logique." Phd thesis, Université Joseph Fourier (Grenoble), 1998. http://tel.archives-ouvertes.fr/tel-00004902.

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L'idée d'établir des relations entre des objets et de les représenter dans la base de connaissances d'un système informatique est le propre de toute approche en Intelligence Artificielle. Cependant, la plupart des formalismes de représentation de connaissances n'exploitent pas toute la richesse de la sémantique de ces relations, ni le comportement qui leur est associé. En recherche d'informations, les traitements de ces relations ne sont guère mieux élaborés et l'impact de leur prise en compte lors de la phase de correspondance n'a jamais été établi, même s'il reste vrai que de nombreuses approches tiennent compte de leur présence dans le document et tentent ainsi de les représenter lors du processus d'indexation. Pourtant la recherche de documents structurés ou complexes exige plus que jamais, outre un langage d'indexation robuste et expressif, la prise en charge de la sémantique des relations ainsi que leurs propriétés. À travers une étude des nouvelles exigences auxquelles la recherche d'informations d'aujourd'hui doit répondre, nous proposons un modèle d'indexation relationnel pour les documents. L'approche consiste à considérer qu'un terme d'indexation est fondé sur des concepts complexes où les connecteurs sémantiques sont vus comme des opérateurs, ou des relations permettant de construire des expressions nouvelles représentant des concepts nouveaux ou des situations nouvelles. Le modèle proposé ne se contente pas de représenter les relations, mais permet aussi d'offrir un cadre général précisant les principes généraux de manipulation de ces relations et la prise en compte de leurs propriétés dans un processus de recherche fondé sur une approche logique. Le modèle proposé comporte deux composantes: le langage de représentation des informations, permettant une approche d'indexation relationnelle, et les règles de dérivation qui, reprenant ce langage, permettent de diriger le processus de correspondance. Nous utilisons la théorie des situations comme langage de représentation et un système de dérivation de pertinence, reposant sur une axiomatisation de la notion de correspondance entre les documents et la requête pour la prise en compte des relations. Une caractéristique intéressante de ce modèle est qu'il conduit à étendre certains formalismes de représentation de connaissances par des notions utiles en recherche d'informations. Les limitations de la famille des logiques terminologiques, utilisée par ailleurs comme base formelle de l'approche d'indexation relationnelle proposée, peuvent ainsi être surmontées. Cependant, la complexité des traitements associés à cette famille de logiques empêche de les utiliser comme un modèle opérationnel. Nous proposons alors le formalisme des graphes conceptuels comme un bon compromis entre la complexité des démonstrateurs de théorèmes et la simplicité des approches algébriques. Ce formalisme est alors vu, à travers une interprétation logique adéquate, comme une implantation d'une logique terminologique étendue et du modèle d'indexation. Notre approche a été implantée sur une plate-forme de gestion de graphes conceptuels, réalisée sur le système de gestion de base de données à objets O2. Le prototype RELIEF résultant de notre expérimentation a été testé sur une collection d'images et a démontré l'applicabilité et le bien-fondé de notre approche.
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Kerdiles, Gwenael Nang. "Logiques de graphes conceptuels." Montpellier 2, 2001. http://www.theses.fr/2001MON20185.

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Kheirbek, Ammar. "Modèle d'intégration d'un système de recherche d'informations et d'un système hypermédia basé sur le formalisme des graphes conceptuels." Université Joseph Fourier (Grenoble), 1995. http://www.theses.fr/1995GRE10045.

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Le but de notre travail est de définir un modèle de recherche d'informations, intégrant les deux modes d'accès que sont la formulation de requêtes (approche systèmes de recherche d'information) et la navigation (approche systèmes hypermédia). La motivation de cette étude repose sur la constatation que ces deux approches sont fortement complémentaires, les avantages de l'une compensant largement les limitations de l'autre. Classiquement, les modèles de recherche d'informations et d'hypermédia établissent une distinction entre les aspects structure des informations et les aspects représentation des connaissances. Cette distinction est, d'une part, de nature à limiter les possibilités de ces systèmes, et est un obstacle à l'intégration de ces deux modèles d'autre part. La base de notre approche d'intégration consiste tout d'abord à unifier ces deux types d'informations: une sémantique est attachée aux structures, et cette sémantique doit être explicitée et utilisée dans le processus d'accès à l'information, au même titre que les connaissances attachées au contenu de l'information. La définition formelle proposée du modèle intégré est largement fondée sur le formalisme des graphes conceptuels qui a été retenu pour représenter toutes les connaissances du système et pour réaliser les différentes opérations d'interrogation et de navigation propres aux deux approches. Une conclusion intéressante de cette démarche d'intégration est qu'elle conduit également à améliorer les deux modèles composants, par rapport à l'état de l'art. Une expérimentation du modèle proposé a conduit à la réalisation d'un prototype fondé sur O2 (SGBD Orienté Objet) et l'interface MOSAIC de WWW (World Wide Web), et les tests ont utilisé le corpus du système RIME (Recherche d'Informations MEdicales)
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Sastry, Kiran Srinivasa. "An Object Oriented Simulator for Conceptual Graphs." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/32480.

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This thesis deals with the design and implementation of an object-oriented simulator for conceptual graphs. Conceptual graphs are a means of representing information and knowledge. In particular, they may be used to represent the behavior of mechanisms. Conceptual graph simulation provides the means for verifying that the conceptual graph model of the system is a proper representation of the mechanism. The motivation for the design of this simulator is to help a conceptual graph model designer overcome the imprecision and ambiguity inherent in the English language. When a person translates an English language specification of a system to a conceptual graph model, the model may be incomplete, owing to semantic gaps in the English language specification. The simulator attempts to help the designer fill in these gaps by pointing out missing concepts and relations needed to simulate the model. This thesis covers the issues involved in designing such a simulator, and the implementation of the simulator in Java. The working of the simulator is demonstrated by simulating sample conceptual graphs. Also, a set of action procedures, and a small library of device schema graphs are created, so that devices may be effectively modeled.<br>Master of Science
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Maher, Peter E. "A Prolog implementation of conceptual graphs." Thesis, Cardiff University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.257650.

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Books on the topic "Graphe conceptuel"

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Marie-Laure, Mugnier, ed. Graph-based knowledge representation: Computational foundations of conceptual graphs. Springer, 2009.

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Marie-Laure, Mugnier, ed. Graph-based knowledge representation: Computational foundations of conceptual graphs. Springer, 2009.

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Mineau, Guy W., Bernard Moulin, and John F. Sowa, eds. Conceptual Graphs for Knowledge Representation. Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/3-540-56979-0.

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Cao, Tru Hoang. Conceptual Graphs and Fuzzy Logic. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-14087-7.

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Corbett, Dan. Reasoning and Unification over Conceptual Graphs. Springer US, 2003. http://dx.doi.org/10.1007/978-1-4615-0087-2.

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Corbett, Dan. Reasoning and unification over conceptual graphs. Kluwer Academic/Plenum Publishers, 2003.

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Corbett, Dan. Reasoning and Unification over Conceptual Graphs. Springer US, 2003.

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Isakov, Vladimir. Speak the language of schemes. INFRA-M Academic Publishing LLC., 2022. http://dx.doi.org/10.12737/1860649.

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Schematization and visualization are the necessary means to ensure the activity of a modern specialist. Schematization allows you to highlight the main thing in an object, to discover its constituent elements, to show their relationship, gives impetus to the construction of conceptual approaches. Visualization "dresses" schematic concepts in a bright, expressive artistic and graphic form. The handbook provides descriptions of the most popular means of analytical graphics - maps, graphs, tables, graphs, diagrams, flowcharts (algorithms), chronolents, maps, methodological schemes, etc. The ways of using schemes for analyzing goals, causes, problems, versions are considered. A thematic dictionary of terms and definitions, a "hot twenty" useful schematization are given.&#x0D; For students, undergraduates, postgraduates, teachers of law schools and faculties, as well as for representatives of other specialties - everyone who draws diagrams and works with them.
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Fung, P. W. Designing an intelligent case-based learning environment in physics with conceptual graphs. UMIST, 1996.

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Pascal, Hitzler, and Schärfe Henrik, eds. Conceptual structures in practice. Taylor & Francis, 2009.

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Book chapters on the topic "Graphe conceptuel"

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Mennicke, Stephan. "Modal Schema Graphs for Graph Databases." In Conceptual Modeling. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-33223-5_41.

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Soussi, Rania. "SPIDER-Graph: A Model for Heterogeneous Graphs Extracted from a Relational Database." In Conceptual Modeling. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-34002-4_44.

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Sowa, John F. "Conceptual Graphs." In Handbook on Architectures of Information Systems. Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-662-03526-9_13.

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Sowa, John F. "Conceptual Graphs." In Handbook on Architectures of Information Systems. Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/3-540-26661-5_13.

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Mennicke, Stephan, Jan-Christoph Kalo, and Wolf-Tilo Balke. "Querying Graph Databases: What Do Graph Patterns Mean?" In Conceptual Modeling. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-69904-2_11.

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Steinmetz, Dietrich, Felix Merz, Hui Ma, and Sven Hartmann. "A Graph Model for Taxi Ride Sharing Supported by Graph Databases." In Conceptual Modeling. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-33223-5_10.

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Raban, Ryszard, and Harry S. Delugach. "Animating conceptual graphs." In Conceptual Structures: Fulfilling Peirce's Dream. Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/bfb0027889.

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Wuwongse, Vilas, and Mario Manzano. "Fuzzy conceptual graphs." In Conceptual Graphs for Knowledge Representation. Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/3-540-56979-0_24.

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Cao, Tru Hoang. "Fuzzy Conceptual Graphs." In Conceptual Graphs and Fuzzy Logic. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-14087-7_2.

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Cyre, Walling R. "Executing conceptual graphs." In Conceptual Structures: Theory, Tools and Applications. Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/bfb0054904.

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Conference papers on the topic "Graphe conceptuel"

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Welch, Richard V., and John R. Dixon. "Conceptual Design of Mechanical Systems." In ASME 1991 Design Technical Conferences. American Society of Mechanical Engineers, 1991. http://dx.doi.org/10.1115/detc1991-0031.

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Abstract This paper presents a method for generating solutions to a class of conceptual design problems. We define conceptual design as the transformation of functional requirements to abstract physical systems in two stages: 1) phenomenological design — transforming a functional requirement to a behavior description by using physical principles; and 2) embodiment design — transforming the behavior specification to a physical embodiment that exhibit the required behavior. In order to reason about the behavior of in-progress designs, a new representation called behavior graphs has been defined. Behavior graphs are similar to bond graphs but have been developed as a design tool. (Bond graphs were developed as an analysis tool.) In order to guide the design process, the iterative redesign model of design is used at both the phenomenological and embodiment levels. The behavior graph representation and iterative redesign model constitute the conceptual design method presented here. A experimental computer program implementing this method is discussed and illustrative examples presented.
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Ding, Huafeng, Jing Zhao, and Zhen Huang. "The Establishment of Novel Structure Representation Models for Several Kinds of Mechanisms." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-86074.

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This paper attempts to establish the unified topological models and corresponding mathematical representations for planar simple joint, multiple joint and geared (cam) kinematic chains. First, the conventional topological representation models of kinematic chains are introduced. Then new topological models of multiple joint and geared (cam) kinematic chains, which are derived from the topological graph of simple joint kinematic chains, are presented. The characteristics of the new topological graphs and their associations with the topological graph of simple joint kinematic chains are also addressed. The most important merit of the new topological graphs is that it makes it much easier to do unified structure synthesis and further establish conceptual design platform for various planar mechanisms of these kinds.
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Wu, Zhaohong, Matthew I. Campbell, and Benito R. Fernandez. "A Design Representation to Support the Automatic Dynamic Evaluation of Electromechanical Designs." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-81799.

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This paper introduces research leading to a computer-aided design tool in which engineering designers can test various concepts in an environment equipped to automatically model the dynamics and then optimize the chosen components to best meet the specifications of the design problem. The input to the system is a graph of components where the components either include defined parameter values or are left as variables for the subsequent optimization. In this paper, “conceptual dynamics” is introduced with the goal of revealing the qualitative information of the system states, energy flow patterns, possible operation modes, degrees of freedom, etc. The dynamics of a system are captured in a multi-domain representation referred to as a conceptual dynamics graph (CD-Graph), which is composed of components and virtual couplers. The components feature both detailed multi-complexity models (bond graphs) and qualitative dynamics information (Conceptual Dynamics Matrices), and the virtual couplers include information on the interconnections of the eight domains (three translational, three rotational, electrical, and hydraulic). The Conceptual Dynamics Graph provides a platform for various design automation approaches and further dynamics performance optimization. This paper discusses an automatic approach that extracts the partial configuration of a complete design structure that contributes to the system dynamics. This allows designers to better understand the system and focus on the functional aspects that meet certain dynamic specifications. Finally an automatic model generation approach of CD-Graph is briefly illustrated.
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Eichhoff, Julian R., Felix Baumann, and Dieter Roller. "Two Approaches to the Induction of Graph-Rewriting Rules for Function-Based Design Synthesis." In ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/detc2016-59915.

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In this paper we demonstrate and compare two complementary approaches to the automatic generation of production rules from a set of given graphs representing sample designs. The first approach generates a complete rule set from scratch by means of frequent subgraph discovery. Whereas the second approach is intended to learn additional rules that fit an existing, yet incomplete, rule set using genetic programming. Both approaches have been developed and tested in the context of an application for automated conceptual engineering design, more specifically functional decomposition. They can be considered feasible, complementary approaches to the automatic inference of graph rewriting rules for conceptual design applications.
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El-Ghazaly, Gamal, and Stéphane Caro. "Conceptual Design of Lower-Mobility Parallel Manipulators Based on Wrench Graphs." In ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/detc2014-35494.

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This paper presents a design methodology for lower-mobility parallel manipulators based on classification of wrench systems into four main classes. Wrench systems are represented in a three-dimensional projective space ℙ3 using wrench graphs where it is easy to incorporate geometric constraints to have simple singularity conditions using Grassmann-Cayley algebra (GCA). The main idea of the approach is to design a PM with an overall (constraint and actuation) wrench system that complies with a given wrench graph for which singularity conditions have been predetermined. The main advantage of this methodology is that the singularity conditions are already known a priori and consequently, it gives an opportunity to avoid such conditions at the design stage and make them unreachable. In the worst case scenario, where none of singularity conditions cannot be avoided, one can have a PM with known singular configurations which are always difficult to determine for already designed manipulators. As illustrative examples, two different five degrees-of-freedom (dof) mechanisms have been designed based on some of the defined wrench graphs giving 3T2R motion pattern. The first mechanism has some avoided singularities and the second one is free of singularity.
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Chen, Fengwen, Guodong Long, Zonghan Wu, Tianyi Zhou, and Jing Jiang. "Personalized Federated Learning With a Graph." In Thirty-First International Joint Conference on Artificial Intelligence {IJCAI-22}. International Joint Conferences on Artificial Intelligence Organization, 2022. http://dx.doi.org/10.24963/ijcai.2022/357.

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Knowledge sharing and model personalization are two key components in the conceptual framework of personalized federated learning (PFL). Existing PFL methods focus on proposing new model personalization mechanisms while simply implementing knowledge sharing by aggregating models from all clients, regardless of their relation graph. This paper aims to enhance the knowledge-sharing process in PFL by leveraging the graph-based structural information among clients. We propose a novel structured federated learning (SFL) framework to learn both the global and personalized models simultaneously using client-wise relation graphs and clients' private data. We cast SFL with graph into a novel optimization problem that can model the client-wise complex relations and graph-based structural topology by a unified framework. Moreover, in addition to using an existing relation graph, SFL could be expanded to learn the hidden relations among clients. Experiments on traffic and image benchmark datasets can demonstrate the effectiveness of the proposed method.
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Amine, Semaan, Latifah Nurahmi, Philippe Wenger, and Stéphane Caro. "Conceptual Design of Schoenflies Motion Generators Based on the Wrench Graph." In ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/detc2013-13084.

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The subject of this paper is about the conceptual design of parallel Schoenflies motion generators based on the wrench graph. By using screw theory and Grassmann geometry, some conditions on both the constraint and the actuation wrench systems are generated for the assembly of limbs of parallel Schoenflies motion generators, i.e., 3T1R parallel manipulators. Those conditions are somehow related to the kinematic singularities of the manipulators. Indeed, the parallel manipulator should not be in a constraint singularity in the starting configuration for a valid architecture, otherwise it cannot perform the required motion pattern. After satisfying the latter condition, the parallel manipulator should not be in an actuation singularity in a general configuration, otherwise the obtained parallel manipulator is permanently singular. Based on the assembly conditions, six types of wrench graphs are identified and correspond to six typical classes of 3T1R parallel manipulators. The geometric properties of these six classes are highlighted. A simplified expression of the superbracket decomposition is obtained for each class, which allows the determination and the comparison of the singularities of 3T1R parallel manipulators at their conceptual design stage. The methodology also provides new architectures of parallel Schoenflies motion generators based on the classification of wrench graphs and on their singularity conditions.
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Lin, Wan-Hsuan, and Chun-Shien Lu. "Automated Graph Generation at Sentence Level for Reading Comprehension Based on Conceptual Graphs." In Proceedings of the 28th International Conference on Computational Linguistics. International Committee on Computational Linguistics, 2020. http://dx.doi.org/10.18653/v1/2020.coling-main.240.

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Lin, Wan-Hsuan, and Chun-Shien Lu. "Automated Graph Generation at Sentence Level for Reading Comprehension Based on Conceptual Graphs." In Proceedings of the 28th International Conference on Computational Linguistics. International Committee on Computational Linguistics, 2020. http://dx.doi.org/10.18653/v1/2020.coling-main.240.

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Faci, Adam, Marie-Jeanne Lesot, and Claire Laudy. "CG2A: Conceptual Graphs Generation Algorithm." In 19th World Congress of the International Fuzzy Systems Association (IFSA), 12th Conference of the European Society for Fuzzy Logic and Technology (EUSFLAT), and 11th International Summer School on Aggregation Operators (AGOP). Atlantis Press, 2021. http://dx.doi.org/10.2991/asum.k.210827.009.

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Reports on the topic "Graphe conceptuel"

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Baader, Franz, Ralf Molitor, and Stephan Tobies. The Guarded Fragment of Conceptual Graphs. Aachen University of Technology, 1998. http://dx.doi.org/10.25368/2022.86.

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Delugach, Harry S., Lissa C. Cox, and David J. Skipper. Dependency Language Representation Using Conceptual Graphs. Autonomic Information Systems. Defense Technical Information Center, 2001. http://dx.doi.org/10.21236/ada399504.

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Baader, Franz, Ralf Molitor, and Stefan Tobies. On the Relation between Conceptual Graphs and Description Logics. Aachen University of Technology, 1998. http://dx.doi.org/10.25368/2022.87.

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Harb, Ihab. An approach to pattern recognition of multifont printed alphabet using conceptual graph theory and neural networks. Portland State University Library, 2000. http://dx.doi.org/10.15760/etd.5807.

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Pédarros, Élie, Jeremy Allouche, Matiwos Bekele Oma, et al. La Grande Muraille Verte en tant qu’imaginaire socio-technique. Institute of Development Studies, 2024. http://dx.doi.org/10.19088/ids.2024.018.

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Le projet de la Grande Muraille Verte (GMV), lancé en 2007 par l’Union Africaine, est l’un des plus importants projets de transformation verte de l’Afrique. D’un mouvement environnemental panafricain à une mosaïque de modes de gestion et de mise en œuvre du projet à l’échelle locale en passant par son financement considérable de la part de la communauté internationale, la GMV est désormais considérée comme un « mégaprojet » étudié principalement selon les lignes de l’écologie politique et des études critiques sur le développement. Cependant, les nombreuses dissonances de perception entre les différents acteurs de la GMV à différentes échelles nous conduisent à proposer de considérer la GMV comme un imaginaire socio-technique, un outil permettant « l’élaboration de l’avenir ». Les débats conceptuels autour de la notion de « futur » permettent ainsi d’interroger la capacité de ce projet à intégrer des pratiques endogènes qui s’inscrivent dans une diversité de récits de mémoire environnementale collectivement construits. Considérer la GMV comme un imaginaire sociotechnique implique également de questionner le caractère panafricain de ce projet et de tenter de comprendre comment son expansion actuelle est effectivement négociée et réalisée.
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Sondheim, M., and C. Hodgson. Common hydrology features (CHyF) logical model. Natural Resources Canada/CMSS/Information Management, 2024. http://dx.doi.org/10.4095/328952.

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The Open Geospatial Consortium has defined "OGC WaterML 2: Part 3 - Surface Hydrology Features (HY_Features) - Conceptual Model", but not any particular implementation of it. The Common Hydrology Features (CHyF) model extends HY_Features and makes some minor changes to it required for implementation and the delivery of high performance services. HY_Features discusses catchment coverage and topological relations. In CHyF these are key ideas, as is the notion that hydrologically defined network components form elements of a mathematical graph, allowing for very fast network traversal. HY_Features defines catchments and catchment networks, as well as rivers, channels, flowpaths and hydrographic networks. The CHyF logical model specifies a profile and some extensions to HY_Features, as required to implement topological and graph relations. This starts with the definition of elementary catchments and elementary flowpaths, which are treated as fundamental elements. They are tightly specified terms corresponding to basic catchments and flowpaths in HY_Features and the basic components in the standard reach-catchment model (Maidment and Clark, 2016). If they are subdivided, the result is simply more elementary catchments and elementary flowpaths. Consequently, they are the building blocks used to form complementary coverages as well as a graph structure referred to as a hygraph. Building the hygraph necessitates that connections between features be manifest through their geometry. Divergences and distributaries are supported in CHyF, as the hygraph need not be hierarchical. Nevertheless, CHyF does recognize hierarchical drainage basins and the value in identifying them explicitly (Blodgett, et al, 2021). Different kinds of elementary catchments and elementary flowpaths are defined in CHyF. Of note is that polygonal waterbody features, or portions of such features, are treated as elementary catchments in their own right. In addition to these water catchments, several kinds of land-based elementary catchments are recognized. These model constructs are compatible with the higher level conceptual model in HY_Features, although they differ in detail from other popular implementation models. With the approach taken it becomes practical to handle very large lakes and rivers, as well as coastal ocean zones. CHyF also includes wetlands, glaciers and snowfields as kinds of hydro features; these features help complete the concept of a catchment coverage as put forward by HY_Features.
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Shapovalov, Viktor B., Yevhenii B. Shapovalov, Zhanna I. Bilyk, Artem I. Atamas, Roman A. Tarasenko, and Vitaliy V. Tron. Centralized information web-oriented educational environment of Ukraine. [б. в.], 2019. http://dx.doi.org/10.31812/123456789/3251.

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The modern development of science and technology has provided high quantity of information. This information must be systemized and classified. For taxonomization of educational materials, it was proposed to use existing graph-generators and graph-visualizers of the TODOS IT platform. A separate aspect of the TODOS IT platform is the possibility of using a centralized web-oriented learning environment. Creation of the system and transdisciplinary knowledge is a problem of modern education, which can be solved by creating a centralized web-oriented educational environment. Using this approach is an important part of the learning process. Such a centralized web-oriented environment based on the ontological approach involves filling, adaptive educational services with information resources that reflect the conceptual system of a particular discipline. One of the systems providing not only collection of information but include its systemizing is centralized web-oriented educational environment based on Ontology4 system. Ontology 4 use elements of the TODOS. The paper presents specific developments of one centralized web-oriented educational environment can be used to teach different subjects such as biology, chemistry, Ukrainian language and literature, using the STEM approach.
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Medina, Victor, Chandler Noel, and Jose Mattei-Sosa. Conceptual development and testing of a chitosan/graphene oxide (CSGO) “bandage” to isolate and remove chemical contamination from surfaces. Engineer Research and Development Center (U.S.), 2019. http://dx.doi.org/10.21079/11681/33403.

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Harris, Aubrey, Nathan Richards, and S. McKay. Defining levels of effort for ecological models. Engineer Research and Development Center (U.S.), 2023. http://dx.doi.org/10.21079/11681/47642.

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While models are useful tools for decision-making in environmental management, the question arises about the level of effort required to develop an effective model for a given application. In some cases, it is unclear whether more analysis would lead to choosing a better course of action. This technical note (TN) examines the role of ecological model complexity in ecosystem management. First, model complexity is examined through the lens of risk informed planning. Second, a framework is presented for categorizing five different levels of effort that range from conceptual models to detailed predictive tools. This framework is proposed to enhance communication and provide consistency in ecological modeling applications. Third, the level of effort framework is applied to a set of models in the Middle Rio Grande River system to demonstrate the framework’s utility and application. Ultimately, this TN seeks to guide planners in determining an appropriate level of effort relative to risks associated with uncertainty and resource availability for a given application.
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Russell, H. A. J., and S. K. Frey. Canada One Water: integrated groundwater-surface-water-climate modelling for climate change adaptation. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/329092.

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Canada 1 Water is a 3-year governmental multi-department-private-sector-academic collaboration to model the groundwater-surface-water of Canada coupled with historic climate and climate scenario input. To address this challenge continental Canada has been allocated to one of 6 large watershed basins of approximately two million km2. The model domains are based on natural watershed boundaries and include approximately 1 million km2 of the United States. In year one (2020-2021) data assembly and validation of some 20 datasets (layers) is the focus of work along with conceptual model development. To support analysis of the entire water balance the modelling framework consists of three distinct components and modelling software. Land Surface modelling with the Community Land Model will support information needed for both the regional climate modelling using the Weather Research &amp;amp; Forecasting model (WRF), and input to HydroGeoSphere for groundwater-surface-water modelling. The inclusion of the transboundary watersheds will provide a first time assessment of water resources in this critical international domain. Modelling is also being integrated with Remote Sensing datasets, notably the Gravity Recovery and Climate Experiment (GRACE). GRACE supports regional scale watershed analysis of total water flux. GRACE along with terrestrial time-series data will serve provide validation datasets for model results to ensure that the final project outputs are representative and reliable. The project has an active engagement and collaborative effort underway to try and maximize the long-term benefit of the framework. Much of the supporting model datasets will be published under open access licence to support broad usage and integration.
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