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Dissertations / Theses on the topic 'Text Data Streams'

Author: Grafiati

Published: 28 December 2024

Last updated: 19 July 2025

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1

Snowsill, Tristan. "Data mining in text streams using suffix trees." Thesis, University of Bristol, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.556708.

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Data mining in text streams, or text stream mining, is an increasingly im- portant topic for a number of reasons, including the recent explosion in the availability of textual data and an increasing need for people and organi- sations to process and understand as much of that information as possible, from single users to multinational corporations and governments. In this thesis we present a data structure based on a generalised suffix tree which is capable of solving a number of text stream mining tasks. It can be used to detect changes in the text stream, detect when chunks of text are reuse

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2

Mejova, Yelena Aleksandrovna. "Sentiment analysis within and across social media streams." Diss., University of Iowa, 2012. https://ir.uiowa.edu/etd/2943.

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Social media offers a powerful outlet for people's thoughts and feelings -- it is an enormous ever-growing source of texts ranging from everyday observations to involved discussions. This thesis contributes to the field of sentiment analysis, which aims to extract emotions and opinions from text. A basic goal is to classify text as expressing either positive or negative emotion. Sentiment classifiers have been built for social media text such as product reviews, blog posts, and even Twitter messages. With increasing comple

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3

Hill, Geoffrey. "Sensemaking in Big Data: Conceptual and Empirical Approaches to Actionable Knowledge Generation from Unstructured Text Streams." Kent State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=kent1433597354.

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4

Ben-Fares, Maha. "Apprentissage de représentation non supervisé de flux de données textuelles." Electronic Thesis or Diss., CY Cergy Paris Université, 2024. http://www.theses.fr/2024CYUN1316.

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Cette thèse présente des méthodes innovantes pour le regroupement de flux de données textuelles et introduit également un système d'identification des textes générés par l'IA. Cette méthode de détection de l'IA peut être utilisée indépendamment ou comme étape de prétraitement pour filtrer les documents entrants, en supprimant le contenu généré par l'IA et en préservant l'authenticité et la validité de l'information.Plus précisément, nous développons un système de classification qui distingue entre le texte écrit par des humains et celui généré par l'IA. Pour ce faire, cette méthode utilise une

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5

Pinho, Roberto Dantas de. "Espaço incremental para a mineração visual de conjuntos dinâmicos de documentos." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/55/55134/tde-14092009-123807/.

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Representações visuais têm sido adotadas na exploração de conjuntos de documentos, auxiliando a extração de conhecimento sem que seja necessária a análise individual de milhares de textos. Mapas de documentos, em particular, apresentam documentos individualmente representados espalhados em um espaço visual, refletindo suas relações de similaridade ou conexões. A construção destes mapas de documentos inclui, entre outras tarefas, o posicionamento dos textos e a identificação automática de áreas temáticas. Um desafio é a visualização de conjuntos dinâmicos de documentos. Na visualização de infor

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6

Wu, Yingyu. "Using Text based Visualization in Data Analysis." Kent State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=kent1398079502.

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7

Young, Tom, and Mark Wigent. "Dynamic Formatting of the Test Article Data Stream." International Foundation for Telemetering, 2010. http://hdl.handle.net/10150/605948.

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ITC/USA 2010 Conference Proceedings / The Forty-Sixth Annual International Telemetering Conference and Technical Exhibition / October 25-28, 2010 / Town and Country Resort & Convention Center, San Diego, California

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8

Crossman, Nathaniel C. "Stream Clustering And Visualization Of Geotagged Text Data For Crisis Management." Wright State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=wright1590957641168863.

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9

Franco, Tom. "Performing Frame Transformations to Correctly Stream Position Data." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1491562251744704.

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10

Vickers, Stephen R. "Examining the Duplication of Flight Test Data Centers." International Foundation for Telemetering, 2011. http://hdl.handle.net/10150/595653.

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ITC/USA 2011 Conference Proceedings / The Forty-Seventh Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2011 / Bally's Las Vegas, Las Vegas, Nevada<br>Aircraft flight test data processing began with on site data analysis from the very first aircraft design. This method of analyzing flight data continued from the early 1900's to the present day. Today each new aircraft program builds a separate data center for post flight processing (PFP) to include operations, system administration, and management. Flight Test Engineers (FTE) are relocated from geographic

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11

Yates, James William. "Mixing Staged Data Flow and Stream Computing Techniques in Modern Telemetry Data Acquisition/Processing Architectures." International Foundation for Telemetering, 1999. http://hdl.handle.net/10150/608707.

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International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, Nevada<br>Today’s flight test processing systems must handle many more complex data formats than just the PCM and analog FM data streams of yesterday. Many flight test programs, and their respective test facilities, are looking to leverage their computing assets across multiple customers and programs. Typically, these complex programs require the ability to handle video, packet, and avionics bus data in real time, in addition to handling the more traditional PCM format. Cur

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12

Boppudi, Srimanth. "Further Investigation of a New Traction Stress Based Shear Strength Characterization Method with Test Data." ScholarWorks@UNO, 2014. http://scholarworks.uno.edu/td/1847.

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In this thesis, a new traction stress based method for characterizing shear strength is investigated by carrying out a series of shear strength tests. The AWS method for the calculation of shear strength shows significant discrepancies between longitudinal and transverse specimens. The main purpose of this new traction based definition for shear strength is to demonstrate that there exists a single shear strength value regardless of specimen geometry and loading conditions. With this new approach a better correlation between shear strength values for transverse and longitudinal specimens is ac

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13

Kříž, Blažej. "Framework pro tvorbu generátorů dat." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2012. http://www.nusl.cz/ntk/nusl-236623.

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This master's thesis is focused on the problem of data generation. At the beginning, it presents several applications for data generation and describes the data generation process. Then it deals with development of framework for data generators and demonstrational application for validating the framework.

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14

Luo, Dan, and Yajing Ran. "Micro Drivers behind the Changes of CET1 Capital Ratio : An empirical analysis based on the results of EU-wide stress test." Thesis, Internationella Handelshögskolan, Högskolan i Jönköping, IHH, Företagsekonomi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-44140.

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Background: Stress tests have been increasingly used as a part of the supervisory tool by national regulators after the financial crisis, which can also be used to conduct authorities’ supervisory for determining bank capital levels, assessing the health of a bank. Purpose: The main purpose of this study is to assess whether some micro factors play important roles on the changes of Common Equity Tier One Capital Ratio (between the bank accounting value and the stress testing results under the adverse scenarios). Our secondary purpose is to investigate if our empirical results will help to pro

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15

Faleiros, Thiago de Paulo. "Propagação em grafos bipartidos para extração de tópicos em fluxo de documentos textuais." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/55/55134/tde-10112016-105854/.

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Tratar grandes quantidades de dados é uma exigência dos modernos algoritmos de mineração de texto. Para algumas aplicações, documentos são constantemente publicados, o que demanda alto custo de armazenamento em longo prazo. Então, é necessário criar métodos de fácil adaptação para uma abordagem que considere documentos em fluxo, e que analise os dados em apenas um passo sem requerer alto custo de armazenamento. Outra exigência é a de que essa abordagem possa explorar heurísticas a fim de melhorar a qualidade dos resultados. Diversos modelos para a extração automática das informações latentes d

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16

Al-Ajmi, Adel. "Wellbore stability analysis based on a new true-triaxial failure criterion." Doctoral thesis, Stockholm : Department of Land and Water Resources Engineering, Royal Institute of Technology, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4037.

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17

GONÇALVES, JÚNIOR Paulo Mauricio. "Multivariate non-parametric statistical tests to reuse classifiers in recurring concept drifting environments." Universidade Federal de Pernambuco, 2013. https://repositorio.ufpe.br/handle/123456789/12226.

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Data streams are a recent processing model where data arrive continuously, in large quantities, at high speeds, so that they must be processed on-line. Besides that, several private and public institutions store large amounts of data that also must be processed. Traditional batch classi ers are not well suited to handle huge amounts of data for basically two reasons. First, they usually read the available data several times until convergence, which is impractical in this scenario. Second, they imply that the context represented by data is stable in time, which may not be true. In fact, t

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18

Gonçalves, Júnior Paulo Mauricio. "Multivariate non-parametric statistical tests to reuse classifiers in recurring concept drifting environments." Universidade Federal de Pernambuco, 2013. https://repositorio.ufpe.br/handle/123456789/12288.

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Data streams are a recent processing model where data arrive continuously, in large quantities, at high speeds, so that they must be processed on-line. Besides that, several private and public institutions store large amounts of data that also must be processed. Traditional batch classi ers are not well suited to handle huge amounts of data for basically two reasons. First, they usually read the available data several times until convergence, which is impractical in this scenario. Second, they imply that the context represented by data is stable in time, which may not be true. In fact, t

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19

Di, Molfetta Sabino. "Studio del modello di vita e di affidabilità di condensatori "Brick" in film per applicazione Automotive per macchine elettriche o ibride." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.

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Il mio progetto di tesi dal titolo "Studio del modello di vita e di affidabilità di condensatori "Brick" in film per applicazioni Automotive per macchine elettriche o ibride, è stato svolto in collaborazione con un'azienda di prodotto, leader mondiale nella progettazione e produzione di condensatori. L'obiettivo del mio progetto è stato quello di studiare, da un punto di vista affidabilistico, i modelli di vita dei condensatori in film di polipropilene utilizzati per applicazioni automotive. I test analizzati consistono nel sottoporre il dispositivo a determinati stress di temperatura e tensi

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20

Leboullenger, Déborah. "Essais sur la transition énergétique : enjeux, valorisation, financement et risques." Thesis, Paris 10, 2017. http://www.theses.fr/2017PA100065/document.

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Cette thèse porte sur La question du financement de la transition énergétique bas-carbone et le rôle du secteur financier et bancaire dans la réussite des objectifs climatiques internationaux. Les enjeux de la transition énergétique pour le secteur financier sont triples. Il faut d’abord comprendre la nécessité d’adopter une analyse différenciée de la consommation énergétique des ménages, en particulier celle liée à leur logement, dans la recherche d’adéquation des objectifs macroéconomiques avec ceux des arbitrages financiers et économiques individuels. Le premier chapitre conduit une analyse

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21

Bourniquel, Bernard. "Evaluation des deformations mecaniques de surface par diffraction x. Optimisation de la mesure des contraintes residuelles. Application au controle qualite du grenaillage de precontrainte." Nantes, 1988. http://www.theses.fr/1988NANT2037.

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Application de la mesure des contraintes residuelles par diffraction des rx au controle non destructif d'engrenages ayant subi un grenaillage de precontrainte. Developpement de nouvelles procedures experimentales

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22

Jakel, Roland. "Grundlagen der Elasto-Plastizität in Creo Simulate - Theorie und Anwendung." Universitätsbibliothek Chemnitz, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-87141.

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Der Vortrag beschreibt die Grundlagen der Elasto-Plastizität sowie die softwaretechnische Anwendung mit dem FEM-Programm Creo Simulate bzw. Pro/MECHANICA von PTC. Der erste Teil des Vortrages beschreibt die Charakteristika plastischen Verhaltens, unterschiedliche plastische Materialgesetze, Fließkriterien bei mehrachsiger Beanspruchung und unterschiedliche Verfestigungsmodelle. Im zweiten Vortragsteil werden Möglichkeiten und Grenzen der Berechnung elasto-plastischer Probleme mit der Software dargestellt sowie Anwendungstipps gegeben. Im dritten Vortragsteil schließlich werden verschiedene Bei

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23

Abouelnagah, Younes. "Efficient Temporal Synopsis of Social Media Streams." Thesis, 2013. http://hdl.handle.net/10012/7689.

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Search and summarization of streaming social media, such as Twitter, requires the ongoing analysis of large volumes of data with dynamically changing characteristics. Tweets are short and repetitious -- lacking context and structure -- making it difficult to generate a coherent synopsis of events within a given time period. Although some established algorithms for frequent itemset analysis might provide an efficient foundation for synopsis generation, the unmodified application of standard methods produces a complex mass of rules, dominated by common language constructs and many trivial variat

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24

Chou, Cheng-Chieh, and 周正杰. "Planning step-stress test plans based on censored data." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/24428386624288427049.

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博士<br>淡江大學<br>數學學系博士班<br>103<br>In this dissertation, we discuss a k-level step-stress accelerated life-testing (ALT) experiment with unequal duration steps. Under the Type-I and Type-I hybrid censoring schemes, the general log-location-scale and exponential lifetime distributions with mean lives which are a linear function of stress for the former and a log-linear function of stress for the latter, along with a cumulative exposure model, are considered as the working models. The determination of the optimal unequal duration steps for exponential, Weibull and lognormal distributions are addres

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25

Lin, Ying-Po, and 林英博. "Optimal Step-Stress Test under Progressive Type I Censoring with Grouped Data." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/74396472995776456245.

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碩士<br>淡江大學<br>統計學系<br>91<br>In the study of product reliability, a life test usually has to be conducted. There are several types of life testing experiments. Type I and Type II censoring schemes have been studied rather extensively by lots of researchers in order to obtain the lifetimes of products. These two schemes do not allow for units to be removed from the test at points other than the final termination point. However, this allowance will be desirable for some experimenters. Therefore, a progressive censoring scheme is proposed to handle this problem. With today's high technology, ma

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26

Chen, Hsin-Hao, and 陳信豪. "Acceptance Sampling Plans under Step-stress Test and Type Ⅰ Interval Censoring Data." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/92860141347330162235.

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碩士<br>國立政治大學<br>統計研究所<br>94<br>In life test experiment we use interval censoring to complete it when we can not inspect the experiment units continuously due to some accidents or for convenience. Furthermore, it is difficult to obtain enough units of breakdown products for many long life components and products. At this moment we can adopt step-stress life test to proceed the experiment. Using this method we can make the test units breakdown early for reducing the time test needed effectively and save prime cost. In this thesis, acceptance sampling plans are established for Rayleigh lifetime d

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27

Wang, Ye. "Robust Text Mining in Online Social Network Context." Thesis, 2018. https://vuir.vu.edu.au/38645/.

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Text mining is involved in a broad scope of applications in diverse domains that mainly, but not exclusively, serve political, commercial, medical and academic needs. Along with the rapid development of the Internet technology in recent thirty years and the advent of online social media and network in a decade, text data is obliged to entail features of online social data streams, for example, the explosive growth, the constantly changing content and the huge volume. As a result, text mining is no longer merely oriented to textual content itself, but requires consideration of surrounding

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28

Haldenwang, Nils. "Reliable General Purpose Sentiment Analysis of the Public Twitter Stream." Doctoral thesis, 2017. https://repositorium.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-2017092716282.

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General purpose Twitter sentiment analysis is a novel field that is closely related to traditional Twitter sentiment analysis but slightly differs in some key aspects. The main difference lies in the fact that the novel approach considers the unfiltered public Twitter stream while most of the previous approaches often applied various filtering steps which are not feasible for many applications. Another goal is to yield more reliable results by only classifying a tweet as positive or negative if it distinctly consists of the respective sentiment and mark the remaining messages as uncertain. Tra

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29

Fernandes, Sebastião Cardoso. "How to deal with extreme cases for credit risk monitoring: a case study in a credit risk data science company." Master's thesis, 2018. http://hdl.handle.net/10362/35455.

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The Global Financial Crisis triggered a severe hold on credit lending due to the financial institutions’ inability to assess credit applicants risk levels properly. Based on U.S. data from Lending Club, we conducted a study to evaluate the consequences of including macroeconomic risk factors in individual credit application observations. Through historical scenario stress testing, we find that this approach results in an increase in performance for credit scoring models developed in a stable economic cycle and applied to a recession. The inclusion of macroeconomic indicators reveals pote

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