"Nippon Telegraph & Telephone Corp. has developed a large-volume Internet search engine that works at high speed, the Nihon Keizai Shimbun reported in its Wednesday morning edition, citing company sources...The technology speeds up the search by simultaneously carrying out such operations as data collection, organization and classification, providing results considerably faster than existing consecutive searches. Internet search engine technology has gone from the "first generation," when users had to gather data online manually, to the current "third generation," in which related sites are automatically analyzed. NTT characterizes its newest engine as a "fourth-generation" technology."
The story mentions that an "experimental" version of the engine will be made available on NTT's Goo search engine site today. I've done some prelimanary checking and haven't been unable to find any additional English info on the NTT-X or Goo sites.