Paper: Morpheme-Based Derivation Of Bipolar Semantic Orientation Of Chinese Words

ACL ID C04-1145
Title Morpheme-Based Derivation Of Bipolar Semantic Orientation Of Chinese Words
Venue International Conference on Computational Linguistics
Session Main Conference
Year 2004
Authors

The evaluative character of a word is called its semantic orientation (SO). A positive SO indicates desirability (e.g. Good, Honest) and a negative SO indicates undesirability (e.g. , Bad, Ugly). This paper presents a method, based on Turney (2003), for inferring the SO of a word from its statistical association with strongly-polarized words and morphemes in Chinese. It is noted that morphemes are much less numerous than words, and that also a small number of fundamental morphemes may be used in the modified system to great advantage. The algorithm was tested on 1,249 words (604 positive and 645 negative) in a corpus of 34 million words, and was run with 20 and 40 polarized words respectively, giving a high precision (79.96% to 81.05%), but a low recall (45.56% to 59.57%). The algorithm wa...