Confidence Level description
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Confidnece level field has the following properties:
1) comes from [0, 1] range
2) has a meaning that the greater the value, the greater module's confidence that given data is correct.
3) if the value is in the [0, 0.33) range, it means that the confidence is low; if it is in the [0.33, 0.66) range, it means that the confidence is medium; if it is in the [0.66, 1] range, it means that the confidence is high.