Automatic Construction of Alternative Word Candidates to Improve Patent Information Search Quality
Jongbum Baik, Seongmin Kim, Soo-Won Lee · Jeongbo gwahaghoe nonmunji. so'peuteuweeo mich eung'yong · 2009
There are many reasons that fail to get appropriate information in information retrieval. Allomorph is one of the reasons for search failure due to keyword mismatch. This research proposes a method to construct alternative word candidates automatically in order to minimize search failure due to keyword mismatch. Assuming that two words have similar meaning if they have similar co-occurrence words, the proposed method uses the concept of concentration, association word set, cosine similarity between association word sets and a filtering technique using confidence. Performance of the proposed method is evaluated using a manually extracted alternative list. Evaluation results show that the proposed method outperforms the context window overlapping in precision and recall.