Table 4 The BPR-IW recall of five groups of information walks with several K on 07/01/2011

K

0 to 20%

20 to 40%

40 to 60%

60 to 80%

80 to 100%

(a) Length (i.e., number of nodes).

1

0.208

0.202

0.201

0.196

0.174

5

0.462

0.448

0.459

0.436

0.430

10

0.605

0.588

0.601

0.565

0.564

20

0.720

0.710

0.727

0.692

0.690

(b) Time range (i.e., days of the gap between the first and the last physician visiting).

1

0.191

0.207

0.194

0.216

0.215

5

0.445

0.449

0.454

0.459

0.474

10

0.595

0.590

0.584

0.598

0.613

20

0.727

0.718

0.698

0.714

0.711