3.6: Advanced Vector Space Systems

The first two TREC experiments were mainly used to adapt the systems to the large amount of data. In TREC 3 and 4 several ideas and methods were used by several systems.

ZUGANG3.6.1: Pseudo Relevance Feedback

ZUGANG3.6.2: Pairs of Terms

ZUGANG3.6.3: Passage Retrieval

ZUGANG3.6.4: Similarity Measures


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