Abstract
Reviews contain aspect information of a product, such as “image quality” and “usability” of a camera. In this paper, we propose an aspect identification method for sentiment sentences in review documents. Machine learning methods usually require a large amount of training data for generating a classifier with high accuracy. However, preparing training data by hand is costly. To solve this problem, we apply a clustering approach to the aspect identification method. Our system acquires new training data from non-tagged data by using the clustering approach. As compared with a baseline method, which does not use the acquisition approach, our method obtained high accuracy.
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