Entity processing model training method, entity identification method and device

The embodiment of the invention provides an entity processing model training method and device and an entity recognition method and device. The entity processing model training method comprises the steps that a text training set used for training an entity processing model is obtained; training the text feature extraction network and the at least two downstream processing networks according to the text training set to obtain a target text feature extraction network; and obtaining a target downstream processing network, and constructing a target entity processing model according to the target text feature extraction network and the target downstream processing network. The entity processing tasks are mapped to different processing spaces by utilizing at least two downstream processing networks, so that the text feature extraction network is prevented from excessively fitting a certain entity processing task, an accurate target text feature extraction network is obtained, an accurate target ...