Using Knowledge to Facilitate Factoid Answer Pinpointing

In order to answer factoid questions, the Webclopedia QA system employs a range of knowledge resources. These include a QA Typology with answer patterns, WordNet, information about typical numerical answer ranges, and semantic relations identified by a robust parser, to filter out likely-looking but wrong candidate answers. This paper describes the knowledge resources and their impact on system performance.

[1]  Raymond J. Mooney,et al.  Learning Parse and Translation Decisions from Examples with Rich Context , 1997, ACL.

[2]  Gideon S. Mann,et al.  Analyses for elucidating current question answering technology , 2001, Natural Language Engineering.

[3]  Sanda M. Harabagiu,et al.  FALCON: Boosting Knowledge for Answer Engines , 2000, TREC.

[4]  Jungyun Seo,et al.  SiteQ: Engineering High Performance QA System Using Lexico-Semantic Pattern Matching and Shallow NLP , 2001, TREC.

[5]  Krzysztof Czuba,et al.  One Search Engine or Two for Question-Answering , 2000, TREC.

[6]  Du-Seong Chang,et al.  TREC-10 Experiments at KAIST: Batch Filtering and Question Answering , 2001, TREC.

[7]  Ulf Hermjakob,et al.  Parsing and Question Classification for Question Answering , 2001, ACL 2001.

[8]  Kui-Lam Kwok,et al.  TREC2001 Question-Answer, Web and Cross Language Experiments using PIRCS , 2001, TREC.

[9]  Chin-Yew Lin.  The Effectiveness of Dictionary and Web-Based Answer Reranking , 2002, COLING.

[10]  Richard M. Schwartz,et al.  An Algorithm that Learns What's in a Name , 1999, Machine Learning.

[11]  Jimmy J. Lin,et al.  Data-Intensive Question Answering , 2001, TREC.

[12]  Eduard Hovy,et al.  A question/answer typology with surface text patterns , 2002 .

[13]  Sabine Buchholz,et al.  Using Grammatical Relations, Answer Frequencies and the World Wide Web for TREC Question Answering , 2001, TREC.

[14]  Wei Li,et al.  A Question Answering System Supported by Information Extraction , 2000, ANLP.

[15]  Martin M. Soubbotin.  Patterns of Potential Answer Expressions as Clues to the Right Answers , 2001, TREC.

[16]  Michael Collins,et al.  Answer Extraction , 2000, ANLP.

[17]  Eduard H. Hovy,et al.  Learning surface text patterns for a Question Answering System , 2002, ACL.

[18]  Eduard H. Hovy,et al.  Question Answering in Webclopedia , 2000, TREC.

[19]  Adwait Ratnaparkhi,et al.  IBM's Statistical Question Answering System , 2000, TREC.

[20]  Charles L. A. Clarke,et al.  Exploiting redundancy in question answering , 2001, SIGIR '01.

[21]  Yue Liu,et al.  TREC-10 Experiments at CAS-ICT: Filtering, Web and QA , 2001, TREC.

[22]  Ian H. Witten,et al.  Managing Gigabytes: Compressing and Indexing Documents and Images , 1999 .

[23]  Christiane Fellbaum,et al.  Book Reviews: WordNet: An Electronic Lexical Database , 1999, CL.

[24]  Eduard H. Hovy,et al.  The Use of External Knowledge of Factoid QA , 2001, TREC.