Query Baseline Expansion from ConservativeSections
نویسندگان
چکیده
In 1999, AT&T participated in the ad-hoc task and the Question Answering (QA), Spoken Document Retrieval (SDR), and Web tracks. Most of our eeort for TREC-8 focused on the QA and SDR tracks. Results from SDR track show that our document expansion techniques, presented in 8, 9], are very eeective for speech retrieval. The results for question answering are also encouraging. Our system designed in a relatively short period for this task can nd the correct answer for about 45% of the user questions. This is specially good given the fact that our system extracts only a short phrase as an answer.
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