Paraphrasing of Chinese Sentences with Special Structure

By analyzing the structure of large amount sentences in Chinese, extracting paraphrase templates based on key items, which can used to paraphrase some sentences with special structure. Matching of paraphrase template with sentences is through calculating similarity of paraphrase sentence with paraphrase template. With fixing keywords and structure auxiliary words which reflect the structure of sentences in the templates and combining the qualifier and replacing them by variables, and achieve exactly structural matching in sentence level and enhanced the coverage of the templates. To evaluate performance of the method, experiments have been done and got the coverage rate of templates and precision of paraphrase 65.4% and 75.82% respectively.