Output method and information processing apparatus

1. A non-transitory computer-readable recording medium having stored therein a program for causing a computer to execute a process, the process comprising:

creating frequent message groups based on an appearance frequency of each message included in accumulated message group generated in the past;

in response to a generation of an error message, extracting, as an error periphery log, a message group within a predetermined time period before and after the error message from the accumulated message group;

determining whether or not the error message is included in one of the frequent message groups based on a degree of relation between the error periphery log and the frequent message groups; and

outputting a message that is included in the error periphery log but not included in any of the frequent message groups, as a related message associated with the error message, based on a result of the determining.

2. The non-transitory computer-readable recording medium of claim 1 , wherein the process further comprises:

extracting a message group which is included in the error periphery log but not included in any of the frequent message groups as an anomaly message group;

outputting one of the frequent message group groups as the related message when the error message is included in the one of the frequent message groups; and

outputting the anomaly message group as the related message when the error message is not included in any of the frequent message groups.

3. The non-transitory computer-readable recording medium of claim 2 , wherein creating the frequent message group includes:

classifying, into a plurality of different message formats, messages included in an observation message group which is a message group generated in the past,

creating an observation data matrix aggregating the number of appearances of each classified message format, and

creating the frequent message group from the observation data matrix.

4. The non-transitory computer-readable recording medium of claim 3 , wherein the extracting the error periphery log includes:

classifying the error periphery log in each of the plurality of different message formats,

creating an observation data matrix of an error periphery log aggregating the number of appearances of each classified message format, and

wherein the determining whether or not the error message is included in the frequent message group includes:

extracting the frequent message group included in the observation data matrix of the error periphery log,

extracting the anomaly message group excluding the frequent message group from the observation data matrix of the error periphery log, and

determining whether or not the frequent message group is generated in a time zone in which the error message is generated.

5. The non-transitory computer-readable recording medium of claim 4 , wherein the outputting further includes:

outputting the frequent message group as the related message when the frequent message group is generated in the time zone in which the error message is generated, and

outputting the anomaly message group as the related message when the frequent message group is not generated in the time zone in which the error message is generated.

6. A computer-implemented output method comprising:

creating frequent message groups based on an appearance frequency of each message included in accumulated message group generated in the past,

in response to a generation of an error message, extracting, as an error periphery log, a message group within a predetermined time period before and after the error message from the accumulated message group;

determining whether or not the error message is included in one of the frequent message groups based on a degree of relation between the error periphery log and the frequent message groups; and

outputting a message that is included in the error periphery log but not included in any of the frequent message groups, as a related message associated with the error message, based on a result of the determining.

7. An information processing apparatus comprising:

a memory; and

a processor, coupled to the memory, configured to:

create frequent message group groups based on an appearance frequency of each message included in accumulated message group generated in the past;

in response to a generation of an error message, extract, as an error periphery log, a message group within a predetermined time period before and after the error message from the accumulated message group;

determine whether or not the error message is included in one of the frequent message groups based on a degree of relation between the error periphery log and the frequent message group groups; and

output a message that is included in the error periphery log but not included in any of the frequent message group groups, as a related message associated with the error message, based on a result of the determining.