It is an object of the present invention to reduce a work load in setting a violation sign condition. A violation sign condition setting supporting system includes a violation-condition-similarity calculating unit 11 configured to calculate similarity between a violation condition for a set monitoring target system and a violation condition for another monitoring target system, a monitoring-data-similarity calculating unit 13 configured to calculate similarity between monitoring data of the set monitoring target system and monitoring data of the other monitoring target system, a first similarity determining unit 12 and a second similarity determining unit 14 configured to determine, on the basis of the similarity calculated by the violation-condition-similarity calculating unit 11 and the similarity calculated by the monitoring-data-similarity calculating unit 13, whether the violation sign condition for the other monitoring target system can be applied to setting of the violation sign condition for the set monitoring target system, and a screen generating and displaying unit 15 configured to cause a monitoring apparatus 3 to display the violation sign condition for the other monitoring target system determined as being able to be applied to the setting of the violation sign condition for the set monitoring target system.
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