Question Answering for the Curated Web : Tasks and Methods in QA over Knowledge Bases and Text Collections (Synthesis Lectures on Information Concepts, Retrieval, and Services)

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Question Answering for the Curated Web : Tasks and Methods in QA over Knowledge Bases and Text Collections (Synthesis Lectures on Information Concepts, Retrieval, and Services)

Saha Roy, Rishiraj/ Anand, Avishek

ウェブストア価格 ¥13,884（本体¥12,622）
Springer International Publishing AG（2021/10発売）
外貨定価 UK£ 49.99
ポイント 126pt

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製本 Paperback:紙装版/ペーパーバック版／ページ数 172 p.
言語 ENG
商品コード 9783031795114

Full Description

Question answering (QA) systems on the Web try to provide crisp answers to information needs posed in natural language, replacing the traditional ranked list of documents. QA, posing a multitude of research challenges, has emerged as one of the most actively investigated topics in information retrieval, natural language processing, and the artificial intelligence communities today. The flip side of such diverse and active interest is that publications are highly fragmented across several venues in the above communities, making it very difficult for new entrants to the field to get a good overview of the topic. Through this book, we make an attempt towards mitigating the above problem by providing an overview of the state-of-the-art in question answering. We cover the twin paradigms of curated Web sources used in QA tasks ‒ trusted text collections like Wikipedia, and objective information distilled into large-scale knowledge bases. We discuss distinct methodologies that have been applied to solve the QA problem in both these paradigms, using instantiations of recent systems for illustration. We begin with an overview of the problem setup and evaluation, cover notable sub-topics like open-domain, multi-hop, and conversational QA in depth, and conclude with key insights and emerging topics. We believe that this resource is a valuable contribution towards a unified view on QA, helping graduate students and researchers planning to work on this topic in the near future.

Preface.- Acknowledgments.- Introduction.- Setup.- Getting Started with Simple Questions.- Complex Question Answering.- Conversational Question Answering.- Part I: Summary and Insights.- Setup.- Reading Comprehension.- Open-Domain Question Answering.- Multi-Hop Question Answering.- Conversational Question Answering.- Part II: Summary and Insights.- Open Directions.- References.- Authors' Biographies.