The discipline of question answering (QA) is concerned with the retrieval of accurate answers to natural language questions from a textual corpus. While early QA systems predominantly relied on lexical and syntactic techniques to find the correct answer in a document collection, semantic approaches have become increasingly popular as means of bridging the gap between questions and answers. The author Nico Schlaefer investigates how semantic resources can help to improve the accuracy of QA systems. Semantic parsing techniques are applied to transform questions into semantic structures and to find phrases in the document collection that match these structures. Ontologies are used to extract terms from questions and corpus sentences and to enrich the terms with semantically similar concepts. These resources are evaluated within the Ephyra framework, a state-of-the-art system for domain-independent QA. The book is intended for researchers and developers in the fields of natural language processing and information retrieval. It includes a brief overview of QA and introduces relevant algorithms and concepts from the fields of statistical modeling and graph theory.
Produktkennzeichnungen
ISBN-10
3836450739
ISBN-13
9783836450737
eBay Product ID (ePID)
64033221
Produkt Hauptmerkmale
Sprache
Englisch
Anzahl der Seiten
96 Seiten
Verlag
Vdm Verlag Dr. Müller, Vdm Verlag Dr. Müller E.K.
Autor
Nico Schlaefer
Buchtitel
A Semantic Approach to Question Answering
Format
Taschenbuch
Erscheinungsjahr
2013
Zusätzliche Produkteigenschaften
Hörbuch
No
Inhaltsbeschreibung
Paperback
Item Length
22cm
Item Height
6mm
Item Width
15cm
Item Weight
159g
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