The decision tree classifier is a widely used technique for
Answer : Classification
Decision Tree Classifier is a classification technique.
Classification technique is a systematic approach to build classification models from an input data set. For example, decision tree classifiers, rule-based classifiers, neural networks, support vector machines, and naive Bayes classifiers are different technique to solve a classification problem.
Reference : wanna get into more details then see this
Classification can be done by using following techniques: