Question and answer model generation method, system and equipment and medium

The invention provides a question and answer model generation method, system and device and a medium, the method comprises the steps that a question and answer data set is constructed, the question and answer data set comprises question and answer pairs formed by combining to-be-encrypted data and non-encrypted data, and the to-be-encrypted data and the non-encrypted data are provided with corresponding data type labels; encoding to-be-encrypted data in the question and answer pair through an auto-encoder to obtain an encrypted combination vector, thereby obtaining an encrypted data set and a corresponding index file, and storing the encrypted data set and the corresponding index file in a data provider database; sending the question and answer data set to the entrusting party, and obtaining an unencrypted combination vector through an auto-encoder so as to obtain an unencrypted data set; inputting the question-answer pairs into a machine learning model for training until convergence, and generating a questio