Data processing device and data processing method

A data processing method performed by a computer, the data processing method comprising:

• receiving first user information relating to a first user operating a first user terminal by being triggered upon an access of the first user terminal at a web site provided by the first site providing device, the first user information including device identification information of the first site providing device, user identification information of the first user terminal and first log data regarding the access by the first user terminal that was triggered;
• accumulating, by storing in a first memory management area of one or more memories that is associated with the device identification information of the first site providing device, the received first user information, the one or more memories storing user information in a plurality of memory management areas, the user information being stored in different memory management areas for each different device identification information, the device identification information being used as a key in the index for classifying the user information stored in the different memory management areas, the first memory management area being a memory management area indicated in the index as for the first information providing device;
• receiving second user information relating to a second user operating a second user terminal by being triggered upon an access of the second user terminal at a web site provided by the second site providing device, the second user information including identification information of the second site providing device, identification information of the second user terminal and second log data regarding the access by the second user terminal that was triggered;
• accumulating, by storing in a second memory management area of the one or more memories that is associated with the device identification information of the second site providing device, the received second user information, the second memory management area being a memory management area indicated in the index as for the second information providing device;
• and
• upon receipt, from an advertiser terminal, of a request indicating that an advertisement delivery to users determined to be interested in a specific product or company is desired:
• extracting, from the memory management area classified in the index with the information providing device associated with the specific product or company, identification information of one or more users that are interested in the specific product or company;
• and
• transmitting, to the advertiser terminal, presentation information that includes the identification information of the one or more users that are interested in the specific product or company.

A non-transitory computer readable storage medium containing program instructions that, when executed by one or more processors of a computer, cause the computer to:

• receive first user information relating to a first user operating a first user terminal by being triggered upon an access of the first user terminal at a web site provided by the first site providing device, the first user information including device identification information of the first site providing device, user identification information of the first user terminal and first log data regarding the access by the first user terminal that was triggered;
• accumulate, by storing in a first memory management area of one or more memories that is associated with the device identification information of the first site providing device, the received first user information, the one or more memories storing user information in a plurality of memory management areas, the user information being stored in different memory management areas for each different device identification information, the device identification information being used as a key in the index for classifying the user information stored in the different memory management areas, the first memory management area being a memory management area indicated in the index as for the first information providing device;
• receive second user information relating to a second user operating a second user terminal by being triggered upon an access of the second user terminal at a web site provided by the second site providing device, the second user information including identification information of the second site providing device, identification information of the second user terminal and second log data regarding the access by the second user terminal that was triggered;
• accumulate, by storing in a second memory management area of the one or more memories that is associated with the device identification information of the second site providing device, the received second user information, the second memory management area being a memory management area indicated in the index as for the second information providing device;
• and
• upon receipt, from an advertiser terminal, of a request indicating that an advertisement delivery to users determined to be interested in a specific product or company is desired:
• extract, from the memory management area classified in the index with the information providing device associated with the specific product or company, identification information of one or more users that are interested in the specific product or company;
• and
• transmit, to the advertiser terminal, presentation information that includes the identification information of the one or more users that are interested in the specific product or company.