A setting support device generates a setting of parameters common to a plurality of devices and a condition used for the setting as a first rule based on information relating to settings of the parameters performed for the plurality of devices in the past. In addition, the setting support device generates a setting of parameters common to the plurality of devices and a condition used for the setting as a second rule for each generation based on information of each generation that relates to settings of the parameters performed for the plurality of devices in the past. The setting support device compares the first rule and the second rule with each other in relation to the setting of the parameters that is common, specifies a different rule, and calculates an index representing a degree of certainty of the specified different rule.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. A non-transitory computer-readable recording medium having stored therein a setting support program for causing a computer to execute a process comprising: generating a setting of parameters common to a plurality of devices and a condition used for the setting as a first rule based on information relating to settings of the parameters performed for the plurality of devices in the past; generating a setting of parameters common to the plurality of devices and a condition used for the setting as a second rule for each generation based on information of each generation that relates to settings of the parameters performed for the plurality of devices in the past; comparing the first rule and the second rule with each other in relation to the setting of the parameters that is common; specifying a different rule; and calculating an index representing a degree of certainty of the specified different rule. 2. The non-transitory computer-readable recording medium according to claim 1, wherein the calculating includes calculating the index representing the degree of certainty of the specified different rule based on a rule relating to a generation having the different rule. 3. The non-transitory computer-readable recording medium according to claim 2, wherein the calculating includes calculating the index to have a higher degree of certainty as the generation having the different rule is newer and is continuous. 4. The non-transitory computer-readable recording medium according to claim 3, wherein the calculating includes calculating the index to have a higher degree of certainty as the generation having the different rule is newer and is continuous by using an identification number for the generation having the different rule, the number of generations in which the generation having the different rule is continuous, and the total number of generations. 5. A setting support device comprising: a processor; a memory, wherein the processor executes: generating a setting of parameters common to a plurality of devices and a condition used for the setting as a first rule based on information relating to settings of the parameters performed for the plurality of devices in the past; generating a setting of parameters common to the plurality of devices and a condition used for the setting as a second rule for each generation based on information of each generation that relates to settings of the parameters performed for the plurality of devices in the past; comparing the first rule and the second rule with each other in relation to the setting of the parameters that is common, specifying a different rule, and calculating an index representing a degree of certainty of the specified different rule. 6. A setting support method comprising: generating a setting of parameters common to a plurality of devices and a condition used for the setting as a first rule based on information relating to settings of the parameters performed for the plurality of devices in the past by a processor; generating a setting of parameters common to the plurality of devices and a condition used for the setting as a second rule for each generation based on information of each generation that relates to settings of the parameters performed for the plurality of devices in the past by the processor; and comparing the first rule and the second rule with each other in relation to the setting of the parameters that is common, specifying a different rule, and calculating an index representing a degree of certainty of the specified different rule by the processor.