Abstract: A method including receiving a natural language query from a user interface of a chatbot. The method also includes generating an input vector by performing vectorization on the natural language query. The method also includes inputting the input vector to a shallow-deep classifier. The shallow-deep learning classifier includes a classification machine learning model programmed to classify the input vector as being one of a shallow machine learning classification problem and a deep machine learning classification problem. The method also includes outputting, by the shallow-deep classifier, an output label. The output label includes one of the shallow machine learning classification problem and the deep machine learning classification problem.