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Author Country (or Countries)

HangZhou 310018 P. R. China

Abstract

This paper deeply studies the phenomenon of hard to satisfy the user’s personalized services and only a few researches on users themselves in the model of Software as a Service (SaaS), then proposes a users’ behavior feature extraction model based on Hidden Semi-Markov Models (HSMM) to solve the problem of getting users hidden information on SaaS platform first. The model uses the probability distribution of state duration time to control user’s browsing behaviors, combines hidden states which describe features with time relativity, and applies improved Viterbi algorithm to get user features sequence. Then cluster users by dynamic K-means algorithm, which doesn’t need to give K cluster centers in the process of clustering but adjusts center value automatically through the comparison of clustering quality in every iterative process, finally gets optimal clustering results. Detailed simulation analysis demonstrates that the presented algorithm is of high efficiency of space and time and is more stable

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