Fig. 4From: Increasing the accuracy of the asthma diagnosis using an operational definition for asthma and a machine learning methodDecision tree model for the asthma diagnosis. Entropy is a measure of the randomness in the information being processed. The higher the entropy, the harder it is to conclude. The sample is the number of data corresponding to the current node. The value list indicates how many samples from a given node fall into each category. Each element in the classification domain is called a classBack to article page