his calculation, any sample with -INF score
(unless INCLUDEINF is used) and any additional positive induced
by NUMPOSITIVES has precision equal to zero. If the INTERPOLATE
option is set to true, the AP is computed from the interpolated
precision and the result is the same as INFO.AUC. Note that AP
as defined by TREC normally does not use interpolation [1].
</p></dd><dt>
info.ap_interp_11
</dt><dd><p>
11-points interpolated average precision as defined by TREC.
This is the average of the maximum precision fo