Figure 2.

P5 for the bm25 model given different settings of the parameters k1 and b. This plot was generated by exhaustively trying all k1 values 0.5 to 3.0 (in 0.1 increments) and b values 0.6 to 1.0 (in 0.05 increments). Notice that except for low values of k1 and b, P5 performance is relatively insensitive to parameter settings.

Lin and Wilbur BMC Bioinformatics 2007 8:423   doi:10.1186/1471-2105-8-423
Download authors' original image