Abstract:

The forgoing experiments have shown that the method of opinion words identification with non-propagation is extremely limited on social medium information. A method of opinion words expansion identification based on dependency parsing is presented. Through new words and phrases discovery, pruning and merger on dependency tree, the opinion words are expanded. A key advantage of the proposed method is that it can expand words in direct dependency and indirect dependency. Experiments verify the feasibility of this method.

Key words: dependency parsing, opinion words expansion, polarity analysis, public opinion