| Abstract: | In recent years, with plenty of online resources constantly emerging, emotion recognition in text has become increasingly important in human–computer interaction. Word emotion plays a very important role in emotion analysis of sentences or documents. This paper proposes a hybrid approach to recognition of word emotion in the dimension of eight emotion categories with corresponding intensities based on the Chinese emotion corpus. First, we present a new algorithm of semantic similarity computation for aiding emotion intensity computation and design a new algorithm of emotion vector computation by making use of both morpheme characteristics and semantic relations. And then, we adopt support vector machine model for the secondary classification to the words whose emotions cannot be calculated by the semantic analysis algorithm. Our approach achieves the accuracy of 54.00% and 78.75% for exact match and all five types of hit, respectively, on the basis of the core emotion lexicon CL4. Experimental results show that the integration of morpheme characteristics and semantic relations can improve the classification accuracy efficiently. © 2013 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc. |
