The invention discloses an intelligent question-answering
system training method based on
machine learning, and the method comprises the steps: optimizing a
knowledge learning sample to obtain optimized knowledge, determining a knowledge weight, constructing an industry
knowledge base, fusing multi-
modal question content to obtain fused question content, and carrying out the training of the intelligent question-answering
system. Obtaining industry description information and a user portrait according to the fused question content and the
user information, and inputting the fused question content, the industry description information and the user portrait into a question and answer
reinforcement learning model to obtain answer content, and obtaining a first reward
signal, a second reward
signal and a dynamic reward weight according to the answer content and the user question response information, adjusting the question and answer
reinforcement learning model, inputting the multi-
modal question content into the adjusted question and answer
reinforcement learning model to obtain optimized answer content, and updating the industry
knowledge base by adopting a user interaction log and the knowledge weight. According to the method, intelligent question and answer
system training can be accurately and efficiently carried out, and meanwhile powerful support is provided for intelligent question and answer services of all industries.