In the past many users had problems to interpret the confidence level, for this reason we provide now the probabilities that the prediction belongs to one of the two classes. In contrast to the confidence level, these numbers can be interpreted as real probabilities ranging from 0 to 1.
Reliable prediction have a high probability for the predicted class and a low probability for the other one. Unreliable predictions have similar values for both classes, and are caused by a lot of contradictory activities of similar compounds.
Probabilities are calculated from the activities and similarities of neighbors, please make sure to inspect the neighbors list for any inconsistencies that might affect the prediction.