The Role of Lexico-Semantic Feedback in Open-Domain Textual Question-Answering

This paper presents an open-domain textual Question-Answering system that uses several feedback loops to enhance its performance. These feedback loops combine in a new way statistical results with syntactic, semantic or pragmatic information derived from texts and lexical databases. The paper presents the contribution of each feedback loop to the overall performance of 76% human-assessed precise answers.

• Type: Conference
• Year: 2001
• Where: ACL
• Authors: Sanda M. Harabagiu, Dan I. Moldovan, Marius Pasca, Rada Mihalcea, Mihai Surdeanu, Razvan C. Bunescu, Roxana Girju, Vasile Rus, Paul Morarescu
• Keywords: ACL 2001, ACL 2007, Feedback Loop, Feedback Loops Combine, Human-assessed Precise Answers