Information processing device, information processing method, program, and recording medium

• US 20060217962A1
• Filed: 03/06/2006
• Published: 09/28/2006
• Est. Priority Date: 03/08/2005
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Asano, Yasuharu
• Granted Patent: US 7,720,849 B2
• Time in Patent Office: Days
• US Class Current: 704/4
• CPC Class Codes: G06F 40/194 Calculation of difference between files
• CPC Class Codes: G06F 40/30 Semantic analysis

Abstract

An information processing device includes a referring unit configured to refer to a table in which a characteristic of each piece of first information is expressed as distribution of model parameters in a plurality of semantic classes, in units of pieces of the first information; an obtaining unit configured to obtain second information to be searched for; a calculating unit configured to calculate similarities between the second information and the respective pieces of the first information; and a first reading unit configured to read the pieces of the first information from the table in descending order of the similarity.

Claims

1. An information processing device comprising:

referring means for referring to a table in which a characteristic of each piece of first information is expressed as distribution of model parameters in a plurality of semantic classes, in units of pieces of the first information;

obtaining means for obtaining second information to be searched for;

calculating means for calculating similarities between the second information and the respective pieces of the first information; and

first reading means for reading the pieces of the first information from the table in descending order of the similarity.

2. The information processing device according to claim 1, further comprising:

extracting means for extracting the semantic classes in descending order of model parameter of the first information read by the first reading means; and

second reading means for reading the pieces of the first information from the table in descending order of model parameter in the semantic classes extracted by the extracting means.

3. The information processing device according to claim 2,

wherein the first information read by the first reading means is recommended information that is recommended to a user as information related to the second information, and

wherein the first information read by the second reading means is information provided to the user as a recommendation reason indicating why the recommended information is recommended.

4. The information processing device according to claim 1, wherein the first reading means calculates similarities between the read first information or second information and the pieces of the first information written in the table and further reads the pieces of the first information from the table in descending order of the similarity.

5. The information processing device according to claim 1, wherein, if the obtaining means obtains a plurality of pieces of the second information, the calculating means calculates similarities for the respective pieces of the second information and calculates the sum of the similarities.

6. The information processing device according to claim 1, wherein, if the obtaining means obtains a plurality of pieces of the second information, the calculating means superimposes distributions of model parameters corresponding to the pieces of the second information and calculates similarity to the first information by using the superimposed distribution of model parameters.

7. The information processing device according to claim 1, wherein the table referred to by the referring means describes only the first information except information that is inappropriate to be presented to the user.

8. An information processing method comprising the steps of:

referring to a table in which a characteristic of each piece of first information is expressed as distribution of model parameters in a plurality of semantic classes, in units of pieces of the first information;

obtaining second information to be searched for;

calculating similarities between the second information and the respective pieces of the first information; and

reading the pieces of the first information from the table in descending order of the similarity.

9. A computer-readable program comprising the steps of:

referring to a table in which a characteristic of each piece of first information is expressed as distribution of model parameters in a plurality of semantic classes, in units of pieces of the first information;

obtaining second information to be searched for;

calculating similarities between the second information and the respective pieces of the first information; and

reading the pieces of the first information from the table in descending order of the similarity.

10. A recording medium storing a computer-readable program comprising the steps of:

referring to a table in which a characteristic of each piece of first information is expressed as distribution of model parameters in a plurality of semantic classes, in units of pieces of the first information;

obtaining second information to be searched for;

calculating similarities between the second information and the respective pieces of the first information; and

reading the pieces of the first information from the table in descending order of the similarity.

11. An information processing device comprising:

referring means for referring to a table in which a characteristic of each piece of first information is expressed as distribution of model parameters in a plurality of semantic classes, in units of pieces of the first information;

obtaining means for obtaining second information to be searched for;

extracting means for extracting the semantic classes in descending order of model parameter of the second information; and

reading means for reading the pieces of the first information from the table in descending order of model parameter in the semantic classes extracted by the extracting means.

12. The information processing device according to claim 11, wherein the reading means extracts the semantic classes in descending order of model parameter of the read pieces of the first information and further reads the pieces of the first information from the table in descending order of model parameter in the extracted semantic classes.

13. An information processing method comprising the steps of:

referring to a table in which a characteristic of each piece of first information is expressed as distribution of model parameters in a plurality of semantic classes, in units of pieces of the first information;

obtaining second information to be searched for;

extracting the semantic classes in descending order of model parameter of the second information; and

reading the pieces of the first information from the table in descending order of model parameter in the semantic classes extracted in the extracting step.

14. A computer-readable program comprising the steps of:

referring to a table in which a characteristic of each piece of first information is expressed as distribution of model parameters in a plurality of semantic classes, in units of pieces of the first information;

obtaining second information to be searched for;

extracting the semantic classes in descending order of model parameter of the second information; and

reading the pieces of the first information from the table in descending order of model parameter in the semantic classes extracted in the extracting step.

15. A recording medium storing a computer-readable program comprising the steps of:

referring to a table in which a characteristic of each piece of first information is expressed as distribution of model parameters in a plurality of semantic classes, in units of pieces of the first information;

obtaining second information to be searched for;

extracting the semantic classes in descending order of model parameter of the second information; and

reading the pieces of the first information from the table in descending order of model parameter in the semantic classes extracted in the extracting step.

16. An information processing device comprising:

a referring unit configured to refer to a table in which a characteristic of each piece of first information is expressed as distribution of model parameters in a plurality of semantic classes, in units of pieces of the first information;

an obtaining unit configured to obtain second information to be searched for;

a calculating unit configured to calculate similarities between the second information and the respective pieces of the first information; and

a first reading unit configured to read the pieces of the first information from the table in descending order of the similarity.

17. An information processing device comprising:

a referring unit configured to refer to a table in which a characteristic of each piece of first information is expressed as distribution of model parameters in a plurality of semantic classes, in units of pieces of the first information;

an obtaining unit configured to obtain second information to be searched for;

an extracting unit configured to extract the semantic classes in descending order of model parameter of the second information; and

a reading unit configured to read the pieces of the first information from the table in descending order of model parameter in the semantic classes extracted by the extracting unit.