bob measure pure python

Hi @bob,

Following our renovation efforts for Bob, shall we make an effort to port this package to be pure python?

The benefits would be:

• Pure python is more convenient (no platform-dependent) than having a compiled one
• More readable code. Hence, more people would be willing to contribute
• We would get rid of a blitz dependency (that will die at some point)

The drawbacks:

• We would lose the C++ API (does anyone need that?)
• Extra work

Follow bellow all the functions that would need to be ported.

• bob::measure::farfrr
• bob::measure::precision_recall
• bob::measure::f_score
• bob::measure::correctlyClassifiedPositives
• bob::measure::correctlyClassifiedNegatives
• bob::measure::minimizingThreshold
• bob::measure::eerThreshold
• bob::measure::eerRocch
• bob::measure::minWeightedErrorRateThreshold
• bob::measure::minHterThreshold
• bob::measure::farThreshold
• bob::measure::frrThreshold
• bob::measure::log_values
• bob::measure::meaningfulThresholds(
• bob::measure::roc
• bob::measure::precision_recall_curve
• bob::measure::rocc
• hbob::measure::rocch2eer
• bob::measure::roc_for_far
• bob::measure::ppndf
• bob::measure::det
• bob::measure::epc

Thanks