Latent Semantic Indexing (LSI): TREC-3 Report

@inproceedings{Dumais1994LatentSI,
  title={Latent Semantic Indexing (LSI): TREC-3 Report},
  author={Susan T. Dumais},
  booktitle={TREC},
  year={1994}
}
We used LSI for both TREC-3 routing and adhoc tasks. For the routing tasks an LSI space was constructed using the training documents. We compared profiles constructed using just the topic words (no training) with profiles constructed using the average of relevant documents (no use of the topic words). Not surprisingly, the centroid of the relevant documents was 30% better than the topic words. This simple feedback method was quite good compared to the routing performance of other systems… CONTINUE READING
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