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Dissertations / Theses on the topic 'Semi-automatic classification'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

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1

NUNES, BERNARDO PEREIRA. "AUTOMATIC CLASSIFICATION OF SEMI-STRUCTURED DATA." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2009. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=14382@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>O problema da classificação de dados remonta à criação de taxonomias visando cobrir áreas do conhecimento. Com o surgimento da Web, o volume de dados disponíveis aumentou várias ordens de magnitude, tornando praticamente impossível a organização de dados manualmente. Esta dissertação tem por objetivo organizar dados semi-estruturados, representados por frames, sem uma estrutura de classes prévia. A dissertação apresenta um algoritmo, baseado no K-Medóide, capaz de organizar um conjunto de frames em classes, estruturadas sob forma de uma hie

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2

Dos, santos Jefersson Alex. "Semi-automatic Classification of Remote Sensing Images." Phd thesis, Université de Cergy Pontoise, 2013. http://tel.archives-ouvertes.fr/tel-00878612.

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A huge effort has been made in the development of image classification systemswith the objective of creating high-quality thematic maps and to establishprecise inventories about land cover use. The peculiarities of Remote SensingImages (RSIs) combined with the traditional image classification challengesmake RSI classification a hard task. Many of the problems are related to therepresentation scale of the data, and to both the size and therepresentativeness of used training set.In this work, we addressed four research issues in order to develop effectivesolutions for interactive classification

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3

Santos, Jefersson Alex dos 1984. "Semi-automatic classification of remote sensing images = Classificação semi-automática de imagens de sensorimento remoto." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/275630.

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Orientadores: Ricardo da Silva Torres, Alexandre Xavier Falcão<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Computação<br>Made available in DSpace on 2018-08-23T15:18:27Z (GMT). No. of bitstreams: 1 Santos_JeferssonAlexdos_D.pdf: 18672412 bytes, checksum: 58ac60d8b5342ab705a78d5c82265ab8 (MD5) Previous issue date: 2013<br>Resumo: Um grande esforço tem sido feito para desenvolver sistemas de classificação de imagens capazes de criar mapas temáticos de alta qualidade e estabelecer inventários precisos sobre o uso do solo. As peculiaridades das imagens de sensoriamento

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4

Trias-Sanz, Roger. "Semi-automatic rural land cover classification from high resolution remote sensing images." Paris 5, 2006. http://www.theses.fr/2006PA05S005.

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Cette thèse présente un chaine d'analyse d'image qui, à partir d'images numériques à haute résolution et à trois ou quatre canaux (50 cm, couleur et, dans certains cas, proche infrarouge), mais aussi en s'appuyant sur le parcellaire cadastral, rend une segmentation des images en parcelles agraires (champs, forêts, vignes,. . . ) et une classification de celles-ci, avec une très haute fiabilité, et attribue à chaque segment classifié une mesure qui indique la confiance que le système a en cette classification. Elle inclut une étude sur l'intérêt de la texture et les espaces de couleur pour la s

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5

Melo, Claudia de Oliveira. "Classificação semi-automática de componentes Java." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/45/45134/tde-06042009-214829/.

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As recentes tecnologias de desenvolvimento e distribuição de componentes possibilitaram o aumento do número de componentes disponíveis no mercado. No entanto, eles muitas vezes estão dispersos e não publicados adequadamente para a comunidade de pesquisa e desenvolvimento de software. Encontrar componentes apropriados para solucionar um problema particular não é uma tarefa simples e novas técnicas devem ser desenvolvidas para o reuso efetivo de componentes. Um dos maiores desafios em reusar componentes consiste em classificá-los corretamente para futuras consultas. Classificar componentes para

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6

Duncan, Patricia. "The development of a method for semi-automatic classification of built-up areas from aerial imagery." Master's thesis, University of Cape Town, 2013. http://hdl.handle.net/11427/4993.

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Includes abstract.<br>Includes bibliographical references.<br>It is essential for geospatial and mapping organisations that changes to the landscapeare regularly detected and captured, so that map databases can be updated. The Chief Directorate of National Geospatial Information (CD: NGI), South Africa’s national mapping agency, currently relies on manual methods for digitizing features and detecting changes. These methods are time consuming and labour intensive, and rely on the skills and interpretation of the operator. It is therefore necessary to move towards more automated methods in the p

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7

Martinez-Alvarez, Miguel. "Knowledge-enhanced text classification : descriptive modelling and new approaches." Thesis, Queen Mary, University of London, 2014. http://qmro.qmul.ac.uk/xmlui/handle/123456789/27205.

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The knowledge available to be exploited by text classification and information retrieval systems has significantly changed, both in nature and quantity, in the last years. Nowadays, there are several sources of information that can potentially improve the classification process, and systems should be able to adapt to incorporate multiple sources of available data in different formats. This fact is specially important in environments where the required information changes rapidly, and its utility may be contingent on timely implementation. For these reasons, the importance of adaptability and f

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8

NUNES, RAFAEL DA SILVA. "THE CREATION OF A SEMI-AUTOMATIC CLASSIFICATION MODEL USING GEOGRAPHIC KNOWLEDGE: A CASE STUDY IN THE NORTHERN PORTION OF THE TIJUCA MASSIF - RJ." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2013. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=34950@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO<br>Os processos de transformação da paisagem são resultantes da interação de elementos (bióticos e abióticos) que compõe a superfície da Terra. Baseia-se, a partir de uma perspectiva holística, no inter-relacionamento de uma série de ações e objetos que confluem para que a paisagem seja percebida como um momento sintético da confluência de inúmeras temporalidades. Desta maneira, as geotecnologias passam a se constituir com

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9

Colaninno, Nicola. "Semi-automatic land cover classification and urban modelling based on morphological features : remote sensing, geographical information systems, and urban morphology : defining models of land occupation along the Mediterranean side of Spain." Doctoral thesis, Universitat Politècnica de Catalunya, 2016. http://hdl.handle.net/10803/396219.

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From a global point of view, as argued by Levy (1999), the modern city has undergone radical changes in its physical form, either in terms of territorial expansion as well as in terms of interna! physical transformations. Today, approximately 75% of the European population lives in urban areas ,which makes the urban fulure of the conlinent a major cause of concern (Brazil, Cavalcanti, & Longo, 2014). lndeed, the demand for urban land, both within and around the cities, is becoming increasingly acule (European Environmenl Agency, 2006). Ouring the last decades, also Spain has been undergoing

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10

Teljstedt, Erik Christopher. "Separating Tweets from Croaks : Detecting Automated Twitter Accounts with Supervised Learning and Synthetically Constructed Training Data." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-192656.

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In this thesis, we have studied the problem of detecting automated Twitter accounts related to the Ukraine conflict using supervised learning. A striking problem with the collected data set is that it was initially lacking a ground truth. Traditionally, supervised learning approaches rely on manual annotation of training sets, but it incurs tedious work and becomes expensive for large and constantly changing collections. We present a novel approach to synthetically generate large amounts of labeled Twitter accounts for detection of automation using a rule-based classifier. It significantly red

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11

Díaz, Pinto Andrés Yesid. "Machine Learning for Glaucoma Assessment using Fundus Images." Doctoral thesis, Universitat Politècnica de València, 2019. http://hdl.handle.net/10251/124351.

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[ES] Las imágenes de fondo de ojo son muy utilizadas por los oftalmólogos para la evaluación de la retina y la detección de glaucoma. Esta patología es la segunda causa de ceguera en el mundo, según estudios de la Organización Mundial de la Salud (OMS). En esta tesis doctoral, se estudian algoritmos de aprendizaje automático (machine learning) para la evaluación automática del glaucoma usando imágenes de fondo de ojo. En primer lugar, se proponen dos métodos para la segmentación automática. El primer método utiliza la transformación Watershed Estocástica para segmentar la copa óptica y post

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12

AVINA, CERVANTES Juan Gabriel. "Navigation visuelle d'un robot mobile dans un environnement d'extérieur semi-structuré." Phd thesis, Institut National Polytechnique de Toulouse - INPT, 2005. http://tel.archives-ouvertes.fr/tel-00010912.

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Cette thèse porte sur le traitement automatique d'images couleur, et son application à la robotique dans des environnements semi-structurés d'extérieur. Nous proposons une méthode de navigation visuelle pour des robots mobiles en utilisant une caméra couleur. Les domaines d'application de ce travail se situent dans l'automatisation de machines agricoles, en vue de la navigation automatique dans un réseau de chemins (pour aller d'une ferme à un champ par exemple). Nous présentons tout d'abord une analyse des principaux travaux de recherche dans la littérature sur la navigation visuelle. Une cha

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13

Escudeiro, Nuno Filipe Fonseca Vasconcelos. "Semi-automatic classification: using active learning for efficient class coverage." Tese, 2012. https://repositorio-aberto.up.pt/handle/10216/73245.

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Escudeiro, Nuno Filipe Fonseca Vasconcelos. "Semi-automatic classification: using active learning for efficient class coverage." Doctoral thesis, 2012. https://repositorio-aberto.up.pt/handle/10216/73245.

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15

Polowinski, Jan. "Semi-Automatic Mapping of Structured Data to Visual Variables." Master's thesis, 2007. https://tud.qucosa.de/id/qucosa%3A26756.

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While semantic web data is machine-understandable and well suited for advanced filtering, in its raw representation it is not conveniently understandable to humans. Therefore, visualization is needed. A core challenge when visualizing the structured but heterogeneous data turned out to be a flexible mapping to Visual Variables. This work deals with a highly flexible, semi-automatic solution with a maximum support of the visualization process, reducing the mapping possibilities to a useful subset. The basis for this is knowledge, concerning metrics and structure of the data on the one hand and

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16

"Semi-automatic landslide detection using sentinel-2 imagery: case study in the Añasco River watershed, Puerto Rico." Tulane University, 2019.

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17

Arnold, Patrick. "The Basics of Complex Correspondences and Functions and their Implementation and Semi-automatic Detection in COMA++." 2011. https://ul.qucosa.de/id/qucosa%3A17223.

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In der vorliegenden Masterarbeit wird erläutert, wie ein klassischer Schema Matcher erweitert wird, um Komplexe Korrespondenzen (many-to-many-Korrespondenzen) und allgemeine Funktionen zwischen zwei Schemata auszudrücken, sowie deren automatische Entdeckung als Erweiterung der herkömmlichen Entdeckung von (1:1)-Korrespondenzen. Der letzte Punkt widmet sich dabei einem Gebiet der Datenintegration, das bisher kaum untersucht wurde, und es werden Ansätze vorgestellt, die für viele Schema Matcher eine Bereicherung darstellen können. Zu diesem Zweckwerden im ersten Teil der Arbeit Komplexe Korrespo

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18

Lin, Yan-Liang. "Semi-automatic classification of tree species using a combination of RGB drone imagery and mask RCNN: case study of the Highveld region in Eswatini." Master's thesis, 2021. http://hdl.handle.net/10362/113903.

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Dissertation submitted in partial fulfilment of the requirements for the Degree of Master of Science in Geospatial Technologies<br>Tree species identification forms an integral part of biodiversity monitoring. Locating at-risk species and predicting their distribution is equally as important as tracing invasive alien plant species distributions. The high prevalence of the latter and their destructive impact on the environment is the focus for this thesis. In areas of the world where technology limitations are restrictive, an approach using low-cost, available RGB drone imagery is proposed to t

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19

Wächter, Thomas. "Semi-automated Ontology Generation for Biocuration and Semantic Search." Doctoral thesis, 2010. https://tud.qucosa.de/id/qucosa%3A25496.

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Background: In the life sciences, the amount of literature and experimental data grows at a tremendous rate. In order to effectively access and integrate these data, biomedical ontologies – controlled, hierarchical vocabularies – are being developed. Creating and maintaining such ontologies is a difficult, labour-intensive, manual process. Many computational methods which can support ontology construction have been proposed in the past. However, good, validated systems are largely missing. Motivation: The biocuration community plays a central role in the development of ontologies. Any metho

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