Method and system for information retrieval based on parts of speech conditions

• US 6,807,544 B1
• Filed: 08/09/2000
• Issued: 10/19/2004
• Est. Priority Date: 08/11/1999
• Status: Expired due to Term

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Morimoto, Yukiko, Mase, Hisao, Kinugawa, Kazuhisa, Mizuno, Hirotaka
• Primary Examiner(s): Robinson, Greta
• Assistant Examiner(s): Le, Debbie M.
• Application Number:
  US09/635,261
• Time in Patent Office: 1,532 Days
• Field of Search: 707/1-6, 707/100, 704/9
• US Class Current: 1/1
• CPC Class Codes: G06F 16/38 Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
• CPC Class Codes: Y10S 707/99935 Query augmenting and refining, e.g. inexact access

Abstract

An information retrieval navigation method permitting either the operator or the customer not equipped with a sufficient knowledge of a given product to obtain a sufficient retrieval result is disclosed, in which at least a retrieval navigation item is generated based on the information on a plurality of cases about the product, the user is caused to select at least selected one of the retrieval navigation items, and a retrieval navigation message constituting a natural language message is generated and output from the selected retrieval navigation item. As a result, even the operator or the customer not fully equipped with the knowledge of the product can obtain a sufficient retrieval result.

Claims

1. An information retrieval navigation method using a processing unit, comprising the steps of:

extracting a retrieval navigation item among a plurality of retrieval navigation items which meets a retrieval navigation item generation condition in information on a multiplicity of cases to be searched, the retrieval navigation item generation condition including definitions of parts of speech including either a noun or a verb, hierarchical rank of the parts of speech, appearance order of the retrieved navigation items registered and the retrieved navigation items of high rank;

generating a message including said retrieval navigation item extracted based on the retrieval navigation item generation condition; and

outputting the retrieval navigation item together with the message generated.

5. An information retrieval navigation method according to claim 1, wherein said retrieval navigation items are displayed in hierarchical structure.

6. An information retrieval navigation method according to claim 1, wherein said retrieval navigation items are weighted using the frequency of appearance and/or the order of appearance thereof, and said retrieval navigation items are displayed based on said weight.

7. An information retrieval navigation method according to claim 1, wherein a retrieval navigation item designated or a retrieval navigation item related to a designated retrieval navigation message is deleted based on an instruction to delete said retrieval navigation item or said retrieval navigation message.

8. An information retrieval navigation method according to claim 6, wherein a retrieval navigation item designated or a retrieval navigation item related to a designated retrieval navigation message is deleted based on an instruction to delete said retrieval navigation item or said retrieval navigation message, as the case may be, and the weight of the other retrieval navigation items of the case related to said deleted retrieval navigation item is increased.

12. An information retrieval navigation method according to claim 1, further comprising the steps of:

inputting inquiry contents from an operator; and

executing retrieval of cases thereby to generate said retrieval navigation items based on said inquiry contents.

13. An information retrieval navigation method according to claim 12, wherein said cases include inquiry contents from an operator, causes related to said inquiry contents, and dealing method for said causes,

wherein said step of executing retrieval includes a step for generating said retrieval navigation items from said dealing method in accordance with said retrieval navigation item generation condition.

2. An information retrieval navigation method using a processing unit, comprising the steps of:

extracting a retrieval navigation item among a plurality retrieval navigation items which meet a retrieval navigation item generation condition in information on a multiplicity of cases to be searched, the retrieval navigation item generation condition including definitions of parts of speech including either a noun or a verb, hierarchical rank of the parts of speech, appearance order of the retrieved navigation items registered and retrieved navigation items of high rank; and

selecting at least one retrieval navigation item from the retrieval navigation items thus generated;

generating a message including said retrieval navigation item extracted based on a retrieval navigation message generation condition including a rank of said extracted retrieval navigation item, said extracted retrieval navigation item, and an order of retrieval navigation items of said message not extracted in said extracting step; and

outputting said generated message.

3. An information retrieval navigation method using a processing unit, comprising the steps of:

extracting a retrieval navigation item among a plurality of retrieval navigation items which meet a retrieval navigation item generation condition in information on a multiplicity of cases, the retrieval navigation item generation condition including definitions of parts of speech including either a noun or a verb, hierarchical rank of the parts of speech, appearance order of the retrieved navigation items registered and the retrieved navigation items of high rank;

selecting at least one retrieval navigation item from the retrieval navigation items thus generated;

generating a retrieval navigation message constituting a natural language message from combination of said selected retrieval navigation item with other retrieval navigation item in accordance with a retrieval navigation message generation condition including a rank of said extracted retrieval navigation item, said extracted retrieval navigation item, and an order of retrieval navigation items of said message not extracted in said extracting step;

extracting a case including said retrieval navigation item selected among said cases; and

outputting said generated retrieval navigation message and a number of cases extracted.

4. An information retrieval navigation method according to claim 3, wherein said retrieval navigation message generation condition defines the rank of the selected retrieval navigation item, the rank of the corresponding keyword used and the pattern of the natural language message expressed using the part of speech for said keyword.

9. A computer readable storage medium for storing a program used to execute an information retrieval navigation method, said method comprising the steps of:

extracting a retrieval navigation item among a plurality retrieval navigation items which meet a retrieval navigation item generation condition in information on a multiplicity of cases to be searched, the retrieval navigation item generation condition including definitions of parts of speech including either a noun or a verb, hierarchical rank of the parts of speech, appearance order of the retrieved navigation items registered and the retrieved navigation items of high rank;

selecting at least one retrieval navigation item from the retrieval navigation items thus generated;

generating a message including said retrieval navigation item extracted based on a retrieval navigation message generation condition including a rank of said extracted retrieval navigation item, said extracted retrieval navigation item, and an order of retrieval navigation items of said message not extracted in said extracting step;

extracting a case including said retrieval navigation item selected among said cases; and

outputting said generated message.

10. An information retrieval system comprising:

information accumulation means for accumulating information on a plurality of cases to be searched, a retrieval navigation item generation condition including definitions of parts of speech including either a noun or a verb hierarchical rank of the parts of speech, appearance order of the retrieved navigation items registered and the retrieved navigation items of high rank;

retrieval means for searching the information accumulated in said information accumulation means and retrieving the information based on the parts of speech and the extraction conditions;

means for generating a message including said retrieval navigation item extracted based on the retrieval navigation item generation condition; and

means for generating retrieval navigation items in accordance with the retrieval navigation item generation condition from the information accumulated in said information accumulation means.

11. An information retrieval system comprising:

information accumulation means for accumulating information on a plurality of cases to be searched, a retrieval navigation item generation condition including definitions of parts of speech including either a noun or a verbs hierarchical rank of the parts of speech, appearance order of the retrieved navigation items registered and the retrieved navigation items of high rank;

retrieval means for searching the information accumulated in said information accumulation means and retrieving part of the information;

means for extracting a retrieval navigation item among retrieval navigation items which meet a retrieval navigation item generation condition in information accumulated in said information accumulation means;

means for selecting at least one of said retrieval navigation items generated based on the parts of speech and the extraction conditions;

means for generating a message including said retrieval navigation item extracted based on a retrieval navigation message generation condition including a rank of said extracted retrieval navigation item, said extracted retrieval navigation item, and an order of retrieval navigation items of said message not extracted in said extracting step; and

means for generating a retrieval navigation message as a natural language message in accordance with the retrieval navigation message generation condition from said selected retrieval navigation item.