System, method, and recording medium for data mining between private and public domains

A data mining system, comprising:

• a processor;
• and
• a memory, the memory storing instructions to cause the processor to:
• define a set of filter constraints as a filter function for clustering users' private records of data of a private domain;
• obtain a set of data from a public domain by applying the filter function to users' public records of data of the public domain;
• select a subset of the users public records of data that is common with the users' private records of data;
• and
• perform data mining on the selected subset of the users' public records of data in combination with the users' private records of data to match a user of the private domain to public records of the user of the private domain.

A non-transitory computer-readable recording medium recording a data mining program, the program causing a computer to perform:

• defining a set of filter constraints as a filter function for clustering users' private records of data of a private domain;
• obtaining a set of data from a public domain by applying the filter function to users' public records of data of the public domain;
• selecting a subset of the users public records of data that is common with the users' private records of data;
• and
• performing data mining on the selected subset of the users public records of data in combination with the users private records of data to match a user of the private domain to public records of the user of the private domain.