Master Dissertation : Information Retrieval for Question Answering based on Distributed Representations

Sagrado Sala, Ana. (2022). Master Dissertation : Information Retrieval for Question Answering based on Distributed Representations Master Thesis, Universidad Nacional de Educación a Distancia (España). Escuela Técnica Superior de Ingeniería Informática. Departamento de Lenguajes y Sistemas Informáticos

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Título Master Dissertation : Information Retrieval for Question Answering based on Distributed Representations
Autor(es) Sagrado Sala, Ana
Abstract Commonly used methods for information retrieval such as TFIDF do not capture the semantics of the query or the document. This is a problem, especially in cases where the words used in the queries are not contained in the documents. Therefore more research needs to be done to investigate how text semantics can be applied to information retrieval, especially in cases where the corpus of documents is big and the queries and documents representations need to be compared fast and without the need of re-indexing. In this work, we conduct an exploratory study to investigate different embeddings and deep learning techniques and how this can be applied to the information retrieval task. We show that although existing methods based on word overlapping perform better in general, in particular cases where the word overlap between queries and documents is low, the use of semantic embedding outperforms other methods based on bag of words.
Notas adicionales Trabajo Final de Máster Universitario en Tecnologías del lenguaje. UNED
Materia(s) Ingeniería Informática
Editor(es) Universidad Nacional de Educación a Distancia (España). Escuela Técnica Superior de Ingeniería Informática. Departamento de Lenguajes y Sistemas Informáticos
Director/Tutor Rodrigo Yuste, Álvaro
Lopez Ostenero, Fernando
Fecha 2022-02-01
Formato application/pdf
Identificador bibliuned:master-ETSInformatica-TL-Asagrado
http://e-spacio.uned.es/fez/view/bibliuned:master-ETSInformatica-TL-Asagrado
Idioma eng
Versión de la publicación acceptedVersion
Nivel de acceso y licencia http://creativecommons.org/licenses/by-nc-nd/4.0
info:eu-repo/semantics/openAccess
Tipo de recurso master Thesis
Tipo de acceso Acceso abierto

 
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Creado: Fri, 13 Jan 2023, 22:07:37 CET