Failure diagnosis system, a failure diagnosis device, an information update device, and a computer-readable medium

A failure diagnosis device comprising:

• a diagnosis execution unit configured to selectively execute a plurality of types of failure diagnosis based on causal relationship information representing a causal relationship between events regarding a diagnosis-target apparatus, the causal relationship information including:
• common causal relationship information that is commonly used in the plurality of types of failure diagnosis regarding the diagnosis-target apparatus;
• and
• specific causal relationship information that is used in each specific type of failure diagnosis among the plurality of types of failure diagnosis,
• wherein the diagnosis execution unit executes a diagnosis-target type of failure diagnosis by using a combined causal relationship information that is a combination of the common causal relationship information and a piece of specific causal relationship information corresponding to the diagnosis-target type of failure diagnosis.

An information update device comprising:

• an update unit configured to selectively update causal relationship information representing a causal relationship between events regarding a diagnosis-target apparatus, the causal relationship information including:
• common causal relationship information that is commonly used in a plurality of types of failure diagnosis regarding the diagnosis-target apparatus;
• and
• specific causal relationship information that is used in each specific type of failure diagnosis among the plurality of types of failure diagnosis,
• wherein the update unit selectively updates a piece of the specific causal relationship information by using update information for updating the specific causal relationship information.

A computer-readable medium storing a program for enabling a computer to perform a process, the process comprising:

• selectively executing a plurality of types of failure diagnosis based on causal relationship information representing a causal relationship between events regarding a diagnosis-target apparatus, the causal relationship information including:
• common causal relationship information that is commonly used in the plurality of types of failure diagnosis regarding the diagnosis-target apparatus;
• and
• specific causal relationship information that is used in each specific type of failure diagnosis among the plurality of types of failure diagnosis,
• wherein a diagnosis-target type of failure diagnosis is executed by using a combined causal relationship information that is a combination of the common causal relationship information and a piece of specific causal relationship information corresponding to the diagnosis-target type of failure diagnosis.

A computer-readable medium storing a program for enabling a computer to perform a process, the process comprising:

• selectively updating causal relationship information representing a causal relationship between events regarding a diagnosis-target apparatus, the causal relationship information including:
• common causal relationship information that is commonly used in a plurality of types of failure diagnosis regarding the diagnosis-target apparatus;
• and
• specific causal relationship information that is used in each specific type of failure diagnosis among the plurality of types of failure diagnosis,
• wherein a piece of the specific causal relationship information is updated by using update information for updating the specific causal relationship information.