556bfe20bd5f08b1f841296aca064f126080cfd2,nilmtk/metrics.py,,rms_error_power,#,155

Before Change

        n_samples = 0
        for aligned_meters_chunk in align_two_meters(pred_meter, 
                                                     ground_truth_meter):
            diff = aligned_meters_chunk.icol(0) - aligned_meters_chunk.icol(1)
            diff.dropna(inplace=True)
            sum_of_squared_diff += (diff ** 2).sum()
            n_samples += len(diff)

        error[pred_meter.instance()] = math.sqrt(sum_of_squared_diff / n_samples)

    return pd.Series(error)

After Change

        n_samples = 0
        for aligned_meters_chunk in align_two_meters(pred_meter, 
                                                     ground_truth_meter):
            diff = aligned_meters_chunk.iloc[:, 0] - aligned_meters_chunk.iloc[:, 1]
            diff.dropna(inplace=True)
            sum_of_squared_diff += (diff ** 2).sum()
            n_samples += len(diff)

        error[pred_meter.instance()] = math.sqrt(sum_of_squared_diff / n_samples)

    return pd.Series(error)

Instances