part of speech

When transformation of parts of speech takes place, we should distinguish synchronism from diachronism, grammar from rhetoric anti fixity from temporariness.

摘，应当区分历时和时、语法和修辞学、固定的和临时性的。

According to the confluction between part of speech and the implied keywords of the title,combined the subject and contend,to extract the keywords and Abstract.

在词现模型的基础上,通过融合词性和标隐含关键词信息,将主容相结合,来提取关键词和摘。