Rule-Based Computation of Semantic Orientation for Chinese Sentence

Semantic Orientation refers to the positive or negative attitude, standpoint or opinion on a certain person, object or affair. It is of degree diversity and combinability. Rule-based computation of SO for Chinese sentence, after pre-processing the input sentence in lexical and dependency syntax analysis, takes advantage of the syntax analysis results and combines the pre-compiled dictionary resources to apply classification, recognition, combination, computation and disambiguation rules step by step respectively to the tasks of subjectiveness and objectiveness classification, SO discrimination and SO computation. Experiment on this approach achieves an accuracy of 78.25%, proving its effectiveness and validity.