Exploration of Proximity Heuristics in Length Normalization
Table 2: Mean reciprocal rank (MRR) values on the data-set using various retrieval methods
['[BOLD] Model', '[BOLD] Training Set MRR', '[BOLD] Testing Set MRR']
The proximity feature has outperformed by 52 % from regular BM25. It can be observed that query-document length similarity, not document length normalization has helped in this situation.