Named entity recognition model training method and device and information extraction method and device

The invention provides a named entity recognition model training method and device and an information extraction method and device. According to the training texts in the set, entities in the semi-annotation information of the training texts are matched with entities in the corresponding training texts; based on a matching result, an effective named entity label of the corresponding training textis obtained; vector representation of each training text in the training text set is obtained; and based on the vector representation of each training text in the training text set and the effective named entity labeling, a named entity recognition model is trained based on deep learning to obtain a target named entity recognition model. 提供了一种命名实体识别模型训练方法及设备、信息抽取方法及设备。所述本集中的各训练文本，将训练文本的半标注信息中的实体与相应训练文本中的实体进行匹配；基于匹配结果，获得相应训练文本的有效命名实体标注；获得训练文本集中的各训练文本的向量表示；基于训练文本集中的各训练文本的向量表示及有效命名实体标注，训练基于深度学习的命名实体识别模型，得到目标命名实体识别模型。