In this paper, we report a QA system which can answer how type questions based on the confirmed knowledge base which was developed by using mails posted to a mailing list. We first discuss a problem of developing a knowledge base by using natural language documents: wrong information in natural language documents. Then, we describe a method of detecting wrong information in mails posted to a ma...

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Direct marketing firms want to transfer their message as efficiently as possible in order to obtain a profitable long-term relationship with individual customers. Much attention has been paid to address selection of existing customers and on identifying new profitable prospects. Less attention has been paid to the optimal frequency of the contacts with customers. We provide a decision support s...

Group communication with email is performed by multicast making use of mailing lists. However, it is not quite possible to exclude any member out of the list temporarily. We try and apply some of the set operations to the destination address of a message to solve the problem. The idea is viewing email addresses as a language. Our prototype system works within a domain, however, in reality maili...

BACKGROUND One of the objectives of the New York State birth defect surveillance system, the New York State Congenital Malformations Registry (CMR), is to identify children in need of special programs and assist prevention/intervention programs and services with evaluation. In 1999, the CMR started a statewide mass-mailing program to inform parents of children with major birth defects about pro...