As a branch of natural language processing, the extraction of useful information in large text , the text information extraction became an important means. Introduce the information extraction widely used two kinds of technical methods： HMM and BP network model, analyze their advantages and disadvantages and on this basis propose a hybrid model, based on two models mentioned above. In this model, the classification by BP network capacity is to make up for deficiencies in the classificationof HMM, HMM through strong time-domain modeling capabil...
