Table 9 Parameter settings of the improved baseline BM25 algorithm
From: A hybrid algorithm for clinical decision support in precision medicine based on machine learning
Parameters | Value | Remarks |
|---|---|---|
k1 | 1.2 | adjustment factors |
k2 | 1.2 | adjustment factors |
b1 | 0.75 | adjustment factors |
b2 | 0.75 | adjustment factors |
avgdwl | 85 | The average document length (after running word frequency processing) |
avgdl | 13 | The average number of word lists |