Nippon Telegraph and Telephone Corporation

Naoki Hayashi

Atsushi Takada

Toshihiko Seki

Kyoko Yamagoe

Ryosuke Sato

A correct data generation deviceincludes: an acquisition unitthat acquires alarm information output from a plurality of devices; a correlation unitthat associates, from the alarm information, alarms whose occurrence times are within a first time width and recovery times are within a second time width, as a group of alarms that have occurred by the same event; and a generation unitthat generates correct data in which identification information of the event is set for each alarm of the group of alarms that has been associated.

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Musashino, Japan

Naoki Hayashi