Average number of times each feature was queried using the single-feature
look-ahead algorithm (depth 50) under a budget of 300.  Feature 4 was
queried the most, and it is the most discriminative as well.

Feature query statistics:

0:      5.53333
1:      1.23333
2:      24.3667
3:      0.166667
4:      110.367
5:      0.133333
6:      0.3
7:      0.166667
8:      56.6333
9:      0.3
10:     1.36667
11:     1.06667
12:     1.53333
13:     19.7667
14:     20.1333
15:     0
16:     1.5
17:     0.933333
18:     2.83333
19:     39.4
20:     4.93333
21:     7.33333