Information processing system, information processing method, and program

An information processing method capable of being implemented with a server and an information processing apparatus connected through a network, comprising:

• the server executes:
• storing terms as words appearing in all documents accessible via the network, and total appearance frequencies of the terms with respect to all terms appearing in all the documents in such a manner that terms similar in appearance tendency in all the documents are grouped in total term clusters and documents similar in term appearance tendency are grouped in other total term clusters;
• generating a one-dimensional database in which the terms and the total term appearance frequencies are stored for each total term cluster obtained by grouping the terms similar in appearance tendency in all the documents;
• and
• transmitting the generated one-dimensional database to the information processing apparatus, and
• the information processing apparatus executes:
• storing terms as words appearing in all user documents, and appearance frequencies of the terms with respect to all terms appearing in all the user documents, as a user database in which terms similar in appearance tendency in all the user documents are grouped and user documents similar in term appearance tendency are grouped;
• extracting a word from a specified document;
• identifying, based on the extracted word, an identified total term cluster high in degree of similarity to the specified document;
• selecting a keyword from the terms belonging to the identified total term cluster;
• and
• acquiring, from the network, a content associated with the selected keyword.

A program causing a computer to implement an information processing system capable of being implemented with a server and an information processing apparatus are connected through a network, comprising:

• the server executes:
• storing terms as words appearing in all documents accessible via the network, and total appearance frequencies of the terms appearing in all the documents in such a manner that terms similar in appearance tendency in all the documents are grouped in total term clusters and documents similar in term appearance tendency are grouped in other total term clusters;
• generating a one-dimensional database in which the terms and the total term appearance frequencies are stored for each total term cluster obtained by grouping the terms similar in appearance tendency in all the documents;
• and
• transmitting the generated one-dimensional database to the information processing apparatus, and
• the information processing apparatus executes:
• storing terms as words appearing in all user documents, and appearance frequencies of the terms with respect to all terms appearing in all the user documents, as a user database in which terms similar in appearance tendency in all the user documents are grouped and user documents similar in term appearance tendency are grouped;
• extracting a word from a specified document;
• identifying, based on the extracted word, an identified total term cluster high in degree of similarity to the specified document;
• selecting a keyword from the terms belonging to the identified total term cluster;
• and
• acquiring, from the network, a content associated with the selected keyword.