关键词: URL, URL-Key, 领域术语, 低频术语, SVM

Abstract:

A new approach was presented for domain term extraction using URL-Key. With the help of known URL-Key’s domain, unknown URL-Key’s domain can be identified. First, according to the frequency of URL-Key appearing in various fields, a method based on the variance was proposed to identify the domain URL-Key and build the dictionary of domain URL-Key. Then, the pseudo related feedback was used to construct the URL-Key vector of candidate domain terms. Finally, SVM was applied to extract terms. Experiment was conducted on four different domains for Chinese term extraction. Experimental results indicate that the proposed method is quiet effective. In addition, it can effectively solve the recognition problem of low frequency terms, and provides a new way for the identification of low frequency terms.

Key words: URL, URL-Key, domain term, low-frequency term, SVM