The existing sensitive information recognition is based on the sensitive keyword matching method
so the accuracy is low and the miss rate is high. We presented a collaborative method by using the sensitive keywords and sentiment polarities to identify the sensitive information. In the real dataset
we used the supervised way to measure the sentiment polarities of the blogs
and divided the blogs into two categories
namely the blogs are with positive or negative sentiment polarities. Five kinds of 2 639 sensitive keywords
including pornography
violence
illegality
cult and reactionary
were defined
and it was found that according to the Zipf distribution of these words in the dataset
the contents of blogs with negative sentiment polarities exhibited high sensitivities. Then we studied the contribution of the sensitive keywords to the sentiment polarity
and constructed the model of sensitivity degree that contains the sentiment polarity factor. Based on this
we proposed a new way to identify the sensitive information
which makes the accuracy and miss rate improved from 31.25% to 58.75% and from 95% to 96%
respectively
and the F-measure was improved from 47.0%to 72.3%.
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Keywords
references
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