![Natural language processing / Computational linguistics / Question answering / Document retrieval / Search engine indexing / Precision and recall / Dragomir R. Radev / Relevance / Subject / Information science / Information retrieval / Science Natural language processing / Computational linguistics / Question answering / Document retrieval / Search engine indexing / Precision and recall / Dragomir R. Radev / Relevance / Subject / Information science / Information retrieval / Science](https://www.pdfsearch.io/img/ba3751f9041f6826bcfc061df81ba397.jpg) Date: 2001-02-20 14:58:10Natural language processing Computational linguistics Question answering Document retrieval Search engine indexing Precision and recall Dragomir R. Radev Relevance Subject Information science Information retrieval Science | | TREC9 QA-Track Notebook Paper, NIST, Gaithersburg MD, One Search Engine or Two for Question-Answering John Prager, Eric Brown IBM T.J. Watson Research Center Yorktown Heights, N.YAdd to Reading ListSource URL: trec.nist.govDownload Document from Source Website File Size: 47,85 KBShare Document on Facebook
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