Weighted F1-measure in Watson OpenScale quality metrics

The weighted F1-measure gives the weighted mean of F1-measure with weights equal to class probability in Watson OpenScale.

Weighted F1-Measure at a glance

Description: Weighted mean of F1-measure with weights equal to class probability
Default thresholds: Lower limit = 80%
Default recommendation:
- Upward trend: An upward trend indicates that the metric is improving. This means that model retraining is effective.
- Downward trend: A downward trend indicates that the metric is deteriorating. Feedback data is becoming significantly different than the training data.
- Erratic or irregular variation: An erratic or irregular variation indicates that the feedback data is not consistent between evaluations. Increase the minimum sample size for the Quality monitor.
Problem type: Multiclass classification
Chart values: Last value in the timeframe
Metrics details available: Confusion matrix

The Weighted F1-Measure is the result of using weighted data.

           precision * recall
F1 = 2 *  ____________________

           precision + recall

Parent topic: Quality metrics overview