TREC 7 Ad Hoc, Speech, and Interactive tracks at MDS/CSIRO

  title={TREC 7 Ad Hoc, Speech, and Interactive tracks at MDS/CSIRO},
  author={Michael Fuller and Marcin Kaszkiel and Dongki Kim and Corinna Ng and John Robertson and Ross Wilkinson and Mingfang Wu and Justin Zobel},
In TREC-5 we used document retrieval based on arbitrary passages [8, 9], or xed-length passages that could start at any word position. Although far from the best runs in TREC5, these results were promising, in particular for long documents. In TREC-6 we continued with arbitrary passages, but our main emphasis was on comprehensive factor analysis of successful automatic query expansion and re nements methods in the context of the vector space model [5]. This year we have re ned the MG retrieval… CONTINUE READING

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