MONITORING DEVICE, MONITORING METHOD, AND MONITORING PROGRAM

• Main Authors: MORIYAMA TAKURO, ISHII TAKESHI
• Format: Patent
• Language: English; Japanese
• Published: 22.07.2019
• Subjects: CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING

To provide a monitoring device, a monitoring method, and a monitoring program that perform a contextual abnormality detection with high accuracy.SOLUTION: An monitoring apparatus as an embodiment of the present invention comprises a variable selection unit that determines a context variable to be excluded from variables used when performing an abnormality detection on determination target data with reference data as normal data on the basis of a content variable to be detected as an abnormality, reference data obtained in a first period, and a value of the context variable included in determination target data obtained in a second period, with respect to input data classified into context variables indicating conditions under which the content variable is obtained.SELECTED DRAWING: Figure 1 【課題】高い精度で文脈的異常検知を行う監視装置、監視方法および監視プログラムを提供する。【解決手段】本発明の実施形態としての監視装置は、異常の検知対象となるコンテンツ変数と、前記コンテンツ変数が得られた条件を示すコンテキスト変数に分類された入力データについて、第１期間に得られた基準データと、第２期間に得られた判定対象データに含まれる前記コンテキスト変数の値に基づき、前記基準データを正常データとして前記判定対象データの異常検知を行うときに使用する変数から除外される、前記コンテキスト変数を決定する、変数選択部を備える。【選択図】図１