Question Answering with Lexical Chains Propagating Verb Arguments

Automatic Lexical Classification -- Balancing between Machine Learning and Linguistics

Verb classifications have been used to support a number of practical tasks and applications, such as parsing, information extraction, question-answering, and machine translation. However, large-scale exploitation of verb classes in real-world or domain-sensitive tasks has not been possible because existing manually built classifications are incomprehensive. This paper describes recent and on-go...

Lexical Chains for Question Answering

Boosting Passage Retrieval through Reuse in Question Answering

Question Answering (QA) is an emerging important field in Information Retrieval. In a QA system the archive of previous questions asked from the system makes a collection full of useful factual nuggets. This paper makes an initial attempt to investigate the reuse of facts contained in the archive of previous questions to help and gain performance in answering future related factoid questions. I...

The induction of verb frames and verb classes from corpora

Creating lexical information resources manually is an expensive effort: It takes a long time to define detailed lexical knowledge, then the information needs to be updated regularly because of neologisms, sublanguages and language change, and the lexicon will rarely if ever be complete. For these reasons and also given the 10 increasing availability of computing power and corpus resources, one ...

Automatic Generation of Syntactically Well-formed and Semantically Appropriate Paraphrases

Paraphrases of an expression are alternative linguistic expressions conveying the same information as the original. Technology for handling paraphrases has been attracting increasing attention due to its potential in a wide range of natural language processing applications; e.g., machine translation, information retrieval, question answering, summarization, authoring and revision support, and r...