As a result, "U.S. Treasury has no comment on Hashimoto fx remarks" in Reuters category "Forex markets" and the document "Hashimoto" are not retrieved by a single hierarchy approach.
in the integrating method, these two documents are classified correctly into a pair of similar categories, i.e., the "U.S Treasury" is classified into Reuters category "Forex markets", and the "Hashimoto" is classified into Mainichi category "Money and banking".