Created
January 23, 2017 19:59
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Outbrain map@12 evaluation
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| def eval_map(yhat, dtrain): | |
| inds = (-yhat).argsort(kind='mergesort') | |
| X = np.vstack([dtrain.data['display_id'], dtrain.get_label()]).T | |
| X = X[inds[X[inds, 0].argsort(kind='mergesort')]] | |
| y_ind = np.where(X[:, 1] == 1)[0] | |
| y_pr = np.unique(X[:, 0], return_index=True)[1] | |
| return 'map@12_ob', np.mean(1 / (y_ind - y_pr + 1)), True |
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