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hsiaoyi0504/si650_final_evaluation.md

Last active December 15, 2021 01:24
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Final Evaluation
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si650_final_evaluation.md

| | NDCG| |------------------------------| | Baseline (BM25) | 0.674 | | BM25 with customized parameters| 0.691| | Stemming methods| | Krovetz stemmer with default BM25 parameters | 0.653 | |No stemming with default BM25 parameters| 0.664| |Query Expansion| |RM3 query expansion with default BM25 parameters|0.684| |RM3 query expansion with customized BM25 parameters|0.695| |Final models | |Without stemming, but with RM3 query expansion and customized BM25 parameters|0.700| |Without stemming and RM3 query expansion, but with the weighted scoring scheme and customized BM25 parameters|0.734| |Without stemming, but with RM3 query expansion and the weighted scoring scheme and customized BM25 parameters|0.737|

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