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+ indicates significant improvement over QL (Dir) baselines (p < 0.05)
Document expansion models
| Model | MAP | NDCG | P@20 | NDCG@20 | P@100 | NDCG@100 | Notes | Date |
|---|---|---|---|---|---|---|---|---|
| QL (Dir) | 0.2853 | 0.5304 | 0.5667 | 0.5054 | 0.3986 | 0.4541 | Sweep mu | 5/15/17 |
| Pubmed RM3 | 0.2949 | 0.5806+ | 0.5643 | 0.4762 | 0.3819 | 0.4431 | Sweep mu, fbDocs, fbTerms, alpha, and lambda | 5/17/17 |
| Wikipedia RM3 | 0.2800 | 0.5795+ | 0.5524 | 0.4712 | 0.3724 | 0.4254 | Sweep mu, fbDocs, fbTerms, alpha, and lambda | 5/17/17 |
| Pubmed+Wikipedia RM3 | 0.2923 | 0.5725+ | 0.5667 | 0.4600 | 0.3933 | 0.4378 | Sweep mu, fbDocs, fbTerms, alpha, and lambda | 5/17/17 |
| Model | MAP | NDCG | P@20 | NDCG@20 | P@100 | NDCG@100 | Notes | Date |
|---|---|---|---|---|---|---|---|---|
| Dir (Krovetz) | 0.2959+ | 0.5443+ | 0.5905+ | 0.5150 | 0.4124+ | 0.4655 | + means significant improvement of Dir (unstemmed) | 5/15/17 |
| RM3 (krovetz) | 0.3029 | 0.5734 | 0.5643 | 0.4714 | 0.4033 | 0.4753 | 5/17/17 | |
| Pubmed (Krovetz) | 0.3285+ | 0.6008+ | 0.5667 | 0.4821 | 0.4333+ | 0.4627 | + means improvement of Dir (krovetz) |
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