An Analysis of Reputation Information of Hospitals using Frequency of Words

Information Retrieval is a key technology to utilize the vast amount of texts available on WWW. The conventional search technology mostly uses nouns to focus on target documents and characterize documents. A new trend of search concerns not objects or facts but emotional information, such as reputation, evaluation and reliability. For such purpose, this paper proposes a method to collect characteristic words using the difference of frequency of each word in the target documents and in other general documents. Characteristic words obtained with this method are reported for reputation information of hospitals.