Rozprawy doktorskie na temat „Natural Language Processing”
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Matsubara, Shigeki. "Corpus-based Natural Language Processing". INTELLIGENT MEDIA INTEGRATION NAGOYA UNIVERSITY / COE, 2004. http://hdl.handle.net/2237/10355.
Pełny tekst źródłaSmith, Sydney. "Approaches to Natural Language Processing". Scholarship @ Claremont, 2018. http://scholarship.claremont.edu/cmc_theses/1817.
Pełny tekst źródłaStrandberg, Aron, i Patrik Karlström. "Processing Natural Language for the Spotify API : Are sophisticated natural language processing algorithms necessary when processing language in a limited scope?" Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-186867.
Pełny tekst źródłaChen, Joseph C. H. "Quantum computation and natural language processing". [S.l.] : [s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=965581020.
Pełny tekst źródłaKnight, Sylvia Frances. "Natural language processing for aerospace documentation". Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621395.
Pełny tekst źródłaNaphtal, Rachael (Rachael M. ). "Natural language processing based nutritional application". Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/100640.
Pełny tekst źródłaThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 67-68).
The ability to accurately and eciently track nutritional intake is a powerful tool in combating obesity and other food related diseases. Currently, many methods used for this task are time consuming or easily abandoned; however, a natural language based application that converts spoken text to nutritional information could be a convenient and eective solution. This thesis describes the creation of an application that translates spoken food diaries into nutritional database entries. It explores dierent methods for solving the problem of converting brands, descriptions and food item names into entries in nutritional databases. Specifically, we constructed a cache of over 4,000 food items, and also created a variety of methods to allow refinement of database mappings. We also explored methods of dealing with ambiguous quantity descriptions and the mapping of spoken quantity values to numerical units. When assessed by 500 users entering their daily meals on Amazon Mechanical Turk, the system was able to map 83.8% of the correctly interpreted spoken food items to relevant nutritional database entries. It was also able to nd a logical quantity for 92.2% of the correct food entries. Overall, this system shows a signicant step towards the intelligent conversion of spoken food diaries to actual nutritional feedback.
by Rachael Naphtal.
M. Eng.
Eriksson, Simon. "COMPARING NATURAL LANGUAGE PROCESSING TO STRUCTURED QUERY LANGUAGE ALGORITHMS". Thesis, Umeå universitet, Institutionen för datavetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-163310.
Pełny tekst źródłaKesarwani, Vaibhav. "Automatic Poetry Classification Using Natural Language Processing". Thesis, Université d'Ottawa / University of Ottawa, 2018. http://hdl.handle.net/10393/37309.
Pełny tekst źródłaPham, Son Bao Computer Science & Engineering Faculty of Engineering UNSW. "Incremental knowledge acquisition for natural language processing". Awarded by:University of New South Wales. School of Computer Science and Engineering, 2006. http://handle.unsw.edu.au/1959.4/26299.
Pełny tekst źródła張少能 i Siu-nang Bruce Cheung. "A concise framework of natural language processing". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1989. http://hub.hku.hk/bib/B31208563.
Pełny tekst źródłaCahill, Lynne Julie. "Syllable-based morphology for natural language processing". Thesis, University of Sussex, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386529.
Pełny tekst źródłaLei, Tao Ph D. Massachusetts Institute of Technology. "Interpretable neural models for natural language processing". Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/108990.
Pełny tekst źródłaCataloged from PDF version of thesis.
Includes bibliographical references (pages 109-119).
The success of neural network models often comes at a cost of interpretability. This thesis addresses the problem by providing justifications behind the model's structure and predictions. In the first part of this thesis, we present a class of sequence operations for text processing. The proposed component generalizes from convolution operations and gated aggregations. As justifications, we relate this component to string kernels, i.e. functions measuring the similarity between sequences, and demonstrate how it encodes the efficient kernel computing algorithm into its structure. The proposed model achieves state-of-the-art or competitive results compared to alternative architectures (such as LSTMs and CNNs) across several NLP applications. In the second part, we learn rationales behind the model's prediction by extracting input pieces as supporting evidence. Rationales are tailored to be short and coherent, yet sufficient for making the same prediction. Our approach combines two modular components, generator and encoder, which are trained to operate well together. The generator specifies a distribution over text fragments as candidate rationales and these are passed through the encoder for prediction. Rationales are never given during training. Instead, the model is regularized by the desiderata for rationales. We demonstrate the effectiveness of this learning framework in applications such multi-aspect sentiment analysis. Our method achieves a performance over 90% evaluated against manual annotated rationales.
by Tao Lei.
Ph. D.
Grinman, Alex J. "Natural language processing on encrypted patient data". Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/113438.
Pełny tekst źródłaThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 85-86).
While many industries can benefit from machine learning techniques for data analysis, they often do not have the technical expertise nor computational power to do so. Therefore, many organizations would benefit from outsourcing their data analysis. Yet, stringent data privacy policies prevent outsourcing sensitive data and may stop the delegation of data analysis in its tracks. In this thesis, we put forth a two-party system where one party capable of powerful computation can run certain machine learning algorithms from the natural language processing domain on the second party's data, where the first party is limited to learning only specific functions of the second party's data and nothing else. Our system provides simple cryptographic schemes for locating keywords, matching approximate regular expressions, and computing frequency analysis on encrypted data. We present a full implementation of this system in the form of a extendible software library and a command line interface. Finally, we discuss a medical case study where we used our system to run a suite of unmodified machine learning algorithms on encrypted free text patient notes.
by Alex J. Grinman.
M. Eng.
Alharthi, Haifa. "Natural Language Processing for Book Recommender Systems". Thesis, Université d'Ottawa / University of Ottawa, 2019. http://hdl.handle.net/10393/39134.
Pełny tekst źródłaMedlock, Benjamin William. "Investigating classification for natural language processing tasks". Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.611949.
Pełny tekst źródłaHuang, Yin Jou. "Event Centric Approaches in Natural Language Processing". Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/265210.
Pełny tekst źródłaWoldemariam, Yonas Demeke. "Natural language processing in cross-media analysis". Licentiate thesis, Umeå universitet, Institutionen för datavetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-147640.
Pełny tekst źródłaCheung, Siu-nang Bruce. "A concise framework of natural language processing /". [Hong Kong : University of Hong Kong], 1989. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12432544.
Pełny tekst źródłaDawborn, Timothy James. "DOCREP: Document Representation for Natural Language Processing". Thesis, The University of Sydney, 2015. http://hdl.handle.net/2123/14767.
Pełny tekst źródłaMiao, Yishu. "Deep generative models for natural language processing". Thesis, University of Oxford, 2017. http://ora.ox.ac.uk/objects/uuid:e4e1f1f9-e507-4754-a0ab-0246f1e1e258.
Pełny tekst źródłaHu, Jin. "Explainable Deep Learning for Natural Language Processing". Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-254886.
Pełny tekst źródłaDjupa inlärningsmetoder får imponerande prestanda i många naturliga Neural Processing (NLP) uppgifter, men det är fortfarande svårt att veta vad hände inne i ett djupt neuralt nätverk. I denna avhandling, en allmän översikt av förklarliga AI och hur förklarliga djupa inlärningsmetoder tillämpas för NLP-uppgifter ges. Då den bi-riktiga LSTM och CRF (BiLSTM-CRF) modell för Named Entity Recognition (NER) uppgift införs, liksom tillvägagångssättet för att göra denna modell förklarlig. De tillvägagångssätt för att visualisera vikten av neuroner i BiLSTM-skiktet av Modellen för NER genom Layer-Wise Relevance Propagation (LRP) föreslås, som kan mäta hur neuroner bidrar till varje förutsägelse av ett ord i en sekvens. Idéer om hur man mäter påverkan av CRF-skiktet i Bi-LSTM-CRF-modellen beskrivs också.
Gainon, de Forsan de Gabriac Clara. "Deep Natural Language Processing for User Representation". Electronic Thesis or Diss., Sorbonne université, 2021. http://www.theses.fr/2021SORUS274.
Pełny tekst źródłaThe last decade has witnessed the impressive expansion of Deep Learning (DL) methods, both in academic research and the private sector. This success can be explained by the ability DL to model ever more complex entities. In particular, Representation Learning methods focus on building latent representations from heterogeneous data that are versatile and re-usable, namely in Natural Language Processing (NLP). In parallel, the ever-growing number of systems relying on user data brings its own lot of challenges. This work proposes methods to leverage the representation power of NLP in order to learn rich and versatile user representations.Firstly, we detail the works and domains associated with this thesis. We study Recommendation. We then go over recent NLP advances and how they can be applied to leverage user-generated texts, before detailing Generative models.Secondly, we present a Recommender System (RS) that is based on the combination of a traditional Matrix Factorization (MF) representation method and a sentiment analysis model. The association of those modules forms a dual model that is trained on user reviews for rating prediction. Experiments show that, on top of improving performances, the model allows us to better understand what the user is really interested in in a given item, as well as to provide explanations to the suggestions made.Finally, we introduce a new task-centered on UR: Professional Profile Learning. We thus propose an NLP-based framework, to learn and evaluate professional profiles on different tasks, including next job generation
Guy, Alison. "Logical expressions in natural language conditionals". Thesis, University of Sunderland, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278644.
Pełny tekst źródłaWalker, Alden. "Natural language interaction with robots". Diss., Connect to the thesis, 2007. http://hdl.handle.net/10066/1275.
Pełny tekst źródłaFuchs, Gil Emanuel. "Practical natural language processing question answering using graphs /". Diss., Digital Dissertations Database. Restricted to UC campuses, 2004. http://uclibs.org/PID/11984.
Pełny tekst źródłaKolak, Okan. "Rapid resource transfer for multilingual natural language processing". College Park, Md. : University of Maryland, 2005. http://hdl.handle.net/1903/3182.
Pełny tekst źródłaThesis research directed by: Dept. of Linguistics. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
Takeda, Koichi. "Building Natural Language Processing Applications Using Descriptive Models". 京都大学 (Kyoto University), 2010. http://hdl.handle.net/2433/120372.
Pełny tekst źródłaÅkerud, Daniel, i Henrik Rendlo. "Natural Language Processing from a Software Engineering Perspective". Thesis, Blekinge Tekniska Högskola, Avdelningen för programvarusystem, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-2056.
Pełny tekst źródłaByström, Adam. "From Intent to Code : Using Natural Language Processing". Thesis, Uppsala universitet, Avdelningen för datalogi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-325238.
Pełny tekst źródłaBigert, Johnny. "Automatic and unsupervised methods in natural language processing". Doctoral thesis, Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-156.
Pełny tekst źródłaCohn, Trevor A. "Scaling conditional random fields for natural language processing /". Connect to thesis, 2007. http://eprints.unimelb.edu.au/archive/00002874.
Pełny tekst źródłaZhang, Lidan, i 张丽丹. "Exploiting linguistic knowledge for statistical natural language processing". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B46506299.
Pełny tekst źródłaCosh, Kenneth John. "Supporting organisational semiotics with natural language processing techniques". Thesis, Lancaster University, 2003. http://eprints.lancs.ac.uk/12351/.
Pełny tekst źródłaAllott, Nicholas Mark. "A natural language processing framework for automated assessment". Thesis, Nottingham Trent University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314333.
Pełny tekst źródłaFass, D. "Collative semantics : A semantics for natural language processing". Thesis, University of Essex, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383507.
Pełny tekst źródłaGrubbs, Elmer Andrew. "An information theoretic approach to natural language processing". Diss., The University of Arizona, 1994. http://hdl.handle.net/10150/186886.
Pełny tekst źródłaDjoweini, Camran, i Henrietta Hellberg. "Approaches to natural language processing in app development". Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-230167.
Pełny tekst źródłaDatalingvistik (engelska natural language processing) är ett område inom datavetenskap som ännu inte är fullt etablerat. En hög efterfrågan av stöd för naturligt språk i applikationer skapar ett behov av tillvägagångssätt och verktyg anpassade för ingenjörer. Detta projekt närmar sig området från en ingenjörs synvinkel för att undersöka de tillvägagångssätt, verktyg och tekniker som finns tillgängliga att arbeta med för utveckling av stöd för naturligt språk i applikationer i dagsläget. Delområdet ‘information retrieval’ undersöktes genom en fallstudie, där prototyper utvecklades för att skapa en djupare förståelse av verktygen och teknikerna som används inom området. Vi kom fram till att det går att kategorisera verktyg och tekniker i två olika grupper, beroende på hur distanserad utvecklaren är från den underliggande bearbetningen av språket. Kategorisering av verktyg och tekniker samt källkod, dokumentering och utvärdering av prototyperna presenteras som resultat. Valet av tillvägagångssätt, tekniker och verktyg bör baseras på krav och specifikationer för den färdiga produkten. Resultaten av studien är till stor del generaliserbara eftersom lösningar till många problem inom området är likartade även om de slutgiltiga målen skiljer sig åt.
Bjöörn, Anton, i Lukas Uggla. "Answering Game Rulebook Enquiries Through Natural Language Processing". Thesis, KTH, Skolan för teknikvetenskap (SCI), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-230209.
Pełny tekst źródłaVi har undersökt hur man kan skapa en generell konverserande assistent som kan hjälpa med att svara på regelfrågor i brädspel (eller mer specifikt bordsrollspel, även kallat penna och papper roll- spel). I många bordsrollspel finns det väldigt mycket regler och termer som de flesta användare inte kan memorera direkt om än alls. Istället för att behöva bläddra genom långa böcker eller söka på en hemsida efter rätt del i regeltexten där det man undrar står har vi designat en assistent som man kan ställa frågor till om regler. För att göra detta har vi använt programeringsspråket Python samt verktyget NLTK [11] och hemsidan Dialogflow. Frågan som man ställer programmet skickas till Dialogflow som kan tolka språket och skickar sedan tillbaka till oss vad det är användaren vill (ex- empelvis ”Berätta om svart magi.” skickar tillbaka att användaren vill ha info om ”svart magi”). Därefter söker vårt program igenom en textfil där alla regler har kopierats in (denna används också innan för att Dialogflow ska veta vad som kan frågas om) och av vår kod rankas då olika textstycken utefter relevans och den högst rankade texten visas för användaren. Sedan kan man ex- empelvis fråga om mer information om ämnet, se vad som står direkt efter i texten eller ställa en ny fråga. Vi använde bord- srollspelet Open Legend [2] som testsystem och lät sedan testare som ej var bekanta med systemet testa att försöka svara på några svåra frågor om spelet på tio minuter, detta jämfördes med att lika många testare svarade på samma frågor under samma tid men fick använda hemsidan där reglerna var tagna ifrån istället. Un- dersökningen visade att även i situationer där testaren var okunnig om spelet och nyintroducerad till programmet så kunde assistenten vara lika effektiv som hemsidan på att få ut information. För att undersöka hur generellt applicerbar assistenen var testade vi också att applicera vårat program på ett helt orelaterat och mycket större bordsrollspel (Pathfinder) och även då visade sig assisteten fungera och kunde svara på regelfrågorna, om än mycket långsammare på grund av regelbokens längd.
Rodríguez, Ruiz Luis. "Interactive Pattern Recognition applied to Natural Language Processing". Doctoral thesis, Universitat Politècnica de València, 2010. http://hdl.handle.net/10251/8479.
Pełny tekst źródłaRodríguez Ruiz, L. (2010). Interactive Pattern Recognition applied to Natural Language Processing [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/8479
Palancia
Jin, Di Ph D. Massachusetts Institute of Technology. "Transfer learning and robustness for natural language processing". Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/129004.
Pełny tekst źródłaCataloged from student-submitted PDF of thesis.
Includes bibliographical references (pages 189-217).
Teaching machines to understand human language is one of the most elusive and long-standing challenges in Natural Language Processing (NLP). Driven by the fast development of deep learning, state-of-the-art NLP models have already achieved human-level performance in various large benchmark datasets, such as SQuAD, SNLI, and RACE. However, when these strong models are deployed to real-world applications, they often show poor generalization capability in two situations: 1. There is only a limited amount of data available for model training; 2. Deployed models may degrade significantly in performance on noisy test data or natural/artificial adversaries. In short, performance degradation on low-resource tasks/datasets and unseen data with distribution shifts imposes great challenges to the reliability of NLP models and prevent them from being massively applied in the wild. This dissertation aims to address these two issues.
Towards the first one, we resort to transfer learning to leverage knowledge acquired from related data in order to improve performance on a target low-resource task/dataset. Specifically, we propose different transfer learning methods for three natural language understanding tasks: multi-choice question answering, dialogue state tracking, and sequence labeling, and one natural language generation task: machine translation. These methods are based on four basic transfer learning modalities: multi-task learning, sequential transfer learning, domain adaptation, and cross-lingual transfer. We show experimental results to validate that transferring knowledge from related domains, tasks, and languages can improve the target task/dataset significantly. For the second issue, we propose methods to evaluate the robustness of NLP models on text classification and entailment tasks.
On one hand, we reveal that although these models can achieve a high accuracy of over 90%, they still easily crash over paraphrases of original samples by changing only around 10% words to their synonyms. On the other hand, by creating a new challenge set using four adversarial strategies, we find even the best models for the aspect-based sentiment analysis task cannot reliably identify the target aspect and recognize its sentiment accordingly. On the contrary, they are easily confused by distractor aspects. Overall, these findings raise great concerns of robustness of NLP models, which should be enhanced to ensure their long-run stable service.
by Di Jin.
Ph. D.
Ph.D. Massachusetts Institute of Technology, Department of Mechanical Engineering
Välme, Emma, i Lea Renmarker. "Accelerating Sustainability Report Assessment with Natural Language Processing". Thesis, Uppsala universitet, Avdelningen för visuell information och interaktion, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-445912.
Pełny tekst źródłaLiliemark, Adam, i Viktor Enghed. "Categorization of Customer Reviews Using Natural Language Processing". Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-299882.
Pełny tekst źródłaDatabaser med användargenererad data kan snabbt bli ohanterbara. Klarna stod inför detta problem, med en databas innehållande cirka 700 000 recensioner från kunder. De såg helst att databasen skulle rensas från ointressanta recensioner och att de kvarvarande kategoriseras. Eftersom att kategorierna var okända initialt, var tanken att använda en oövervakad grupperingsalgoritm. Denna rapport beskriver det arbete som utfördes för att lösa detta problem, och föreslår en lösning till Klarna som involverar artificiella neurala nätverk istället för oövervakad gruppering. Implementationen skapad av oss är kapabel till att kategorisera recensioner som intressanta eller ointressanta. Vi föreslår ett arbetsflöde som skulle skapa möjlighet att kategorisera recensioner inte bara i dessa två kategorier, utan i flera. Metoden kretsar kring experimentering med grupperingsalgoritmer och artificiella neurala nätverk. Tidigare forskning visar att texter kan grupperas oövervakat, dock med ingångsdata som väsentligt skiljer sig från Klarnas data. Recensionerna i Klarnas data är generellt sett korta och en stor andel av dem kan ses som ointressanta. Oövervakad grupperingen gav otillräckliga resultat, då inga skönjbara kategorier stod att finna. I vissa fall skapades grupperingar av ointressanta recensioner. Dessa användes som träningsdata för ett artificiellt neuralt nätverk. Till träningsdatan lades intressanta recensioner som tagits fram manuellt. Resultaten från detta var positivt; med en träffsäkerhet om cirka 86% avgörs om en recension är intressant eller inte. Detta uppnåddes genom den tidigare skapade träningsdatan samt fem återkopplingsprocesser, där modellens felaktiga prediktioner av evalueringsdata matades in som träningsdata. Vår uppfattning är att den korta längden på recensionerna gör att den oövervakade grupperingen inte fungerar. Andra forskare har lyckats gruppera textdata med snittlängder om hundratals ord per text. Dessa texter rymmer fler meningsfulla enheter än de korta recensionerna i Klarnas data. Det finns lösningar som innefattar artificiella neurala nätverk å andra sidan kan upptäcka dessa meningsfulla enheter, tack vare sin grundläggande utformning. Vårt arbete visar att ett artificiellt neuralt nätverk kan upptäcka dessa meningsfulla enheter, trots den korta längden per recension. Extrahering av meningsfulla enheter ur korta texter är ett ¨ämne som behöver mer forskning för att underlätta problem som detta. Om meningsfulla enheter kan extraheras ur texter, kan grupperingen göras på dessa enheter istället för orden i sig. Vårt artificiella neurala nätverk visar att de arbiträra enheterna intressant och ointressant kan extraheras, vilket gör oss hoppfulla om att framtida forskare kan finna sätt att extrahera fler enheter ur korta texter. I teorin innebär detta att texter av alla längder kan grupperas oövervakat.
Kavousi, Mohammadamir. "APPLICATIONS OF NEURAL NETWORKS IN NATURAL LANGUAGE PROCESSING". OpenSIUC, 2019. https://opensiuc.lib.siu.edu/theses/2570.
Pełny tekst źródłaWang, Qianqian. "NATURAL LANGUAGE PROCESSING BASED GENERATOR OF TESTING INSTRUMENTS". CSUSB ScholarWorks, 2017. https://scholarworks.lib.csusb.edu/etd/576.
Pełny tekst źródłaRuggeri, Federico <1993>. "Towards Unstructured Knowledge Integration in Natural Language Processing". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2022. http://amsdottorato.unibo.it/10229/1/FedericoRuggeri_PhD_Thesis.pdf.
Pełny tekst źródłaTripodi, Rocco <1982>. "Evolutionary game theoretic models for natural language processing". Doctoral thesis, Università Ca' Foscari Venezia, 2015. http://hdl.handle.net/10579/8351.
Pełny tekst źródłaBoulanger, Hugo. "Data augmentation and generation for natural language processing". Electronic Thesis or Diss., université Paris-Saclay, 2023. http://www.theses.fr/2023UPASG019.
Pełny tekst źródłaMore and more fields are looking to automate part of their process.Automatic language processing contains methods for extracting information from texts.These methods can use machine learning.Machine learning requires annotated data to perform information extraction.Applying these methods to new domains requires obtaining annotated data related to the task.In this thesis, our goal is to study generation methods to improve the performance of learned models with low amounts of data.Different methods of generation are explored that either contain machine learning or do not, which are used to generate the data needed to learn sequence labeling models.The first method explored is pattern filling.This data generation method generates annotated data by combining sentences with slots, or patterns, with mentions.We have shown that this method improves the performance of labeling models with tiny amounts of data.The amount of data needed to use this method is also studied.The second approach tested is the use of language models for text generation alongside a semi-supervised learning method for tagging.The semi-supervised learning method used is tri-training and is used to add labels to the generated data.The tri-training is tested on several generation methods using different pre-trained language models.We proposed a version of tri-training called generative tri-training, where the generation is not done in advance but during the tri-training process and takes advantage of it.The performance of the models trained during the semi-supervision process and of the models trained on the data generated by it are tested.In most cases, the data produced match the performance of the models trained with the semi-supervision.This method allows the improvement of the performances at all the tested data levels with respect to the models without augmentation.The third avenue of study combines some aspects of the previous approaches.For this purpose, different approaches are tested.The use of language models to do sentence replacement in the manner of the pattern-filling generation method is unsuccessful.Using a set of data coming from the different generation methods is tested, which does not outperform the best method.Finally, applying the pattern-filling method to the data generated with the tri-training is tested and does not improve the results obtained with the tri-training.While much remains to be studied, we have highlighted simple methods, such as pattern filling, and more complex ones, such as the use of supervised learning with sentences generated by a language model, to improve the performance of labeling models through the generation of annotated data
Hellmann, Sebastian. "Integrating Natural Language Processing (NLP) and Language Resources Using Linked Data". Doctoral thesis, Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-157932.
Pełny tekst źródłaDevlin, Siobhan Lucy. "Simplifying natural language for aphasic readers". Thesis, University of Sunderland, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.300732.
Pełny tekst źródłaShepherd, David. "Natural language program analysis combining natural language processing with program analysis to improve software maintenance tools /". Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 176 p, 2007. http://proquest.umi.com/pqdweb?did=1397920371&sid=6&Fmt=2&clientId=8331&RQT=309&VName=PQD.
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