This invention relates to a personal identification information classification method based on an information
vector space model, belonging to the field of network
information security technology. This method first extracts characteristic
textual information transmitted in network traffic through network
traffic analysis and transforms it into a dataset containing service, location, information, and frequency feature dimensions. Then, the dataset description is transformed into a
sample space for text classification. Next, a
generative model based on three-layer Bayesian methods is established in conjunction with the text classification model.
Model parameters are obtained through data sample training, automatically representing services-locations and their transmitted information as vectors, and obtaining the probability distributions between services-locations, information, and types. Finally, new services are inferred by calculating the probability distributions between each service-location, information, and type. This method can more precisely describe the distribution characteristics of different information
semantics transmitted in network traffic, achieving the goal of accurately classifying personal identification information.