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Tense generation formula system

A production, temporal technology, applied in the field of artificial intelligence, can solve the problem of not having effective time, limiting the application and promotion of knowledge reasoning, etc.

Inactive Publication Date: 2007-07-25
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (2) Currently no conditions of any rule can be met
However, most production system reasoning at the present stage does not have a time attribute, and a small amount of reasoning is actually endowed with effective time, while the rules do not have effective time constraints, which limits the application and promotion of knowledge reasoning

Method used

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Embodiment Construction

[0044] The present invention will be further described below in conjunction with the accompanying drawings.

[0045] The invention includes a rule set, a general database, and a reasoner.

[0046] Rules include rule header information, rule antecedents, and rule postconditions;

[0047] According to the above expression, the BNF of the tense production of the present invention is defined as:

[0048] ∷={}

[0049] ∷=‘∷’‘IF’‘THEN’[rule explanation]

[0050] ∷=

[0051] ::=

[0052] ::=

[0053] ∷=

[0054] ∷=‘∨’||NULL

[0055] ::='∧'||NULL

[0056] ::= ‘∶’

[0057] ∷＝{}[]‘，’|

[0058] ∷＝‘，’

[0059] ∷＝ |

[0060] ∷＝‘∨’|

[0061] ∷＝

[0062] ∷＝‘[’|‘(’

[0063] ∷＝‘]’|‘)’

[0064] ∷='? ’|‘∞’|‘NOW’|

[0065] ∷=‘’|‘’

[0066] ∷='year'|'month'|'day'|'hour'|'minute'|'second'

[0067] ::='=='|'='|''|'! ='

[0068] ::=

[0069] ∷=|

[0070] ::=||

[0071] ∷=

[0072] ::='['', '']'

[0073] ∷='year''month''day''hour''minute''second'

[0...

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Abstract

A production system of tense type is prepared for using databank to store data relating to problem to be solved, using rule set to present normal knowledge rule of problem field, using a reasoning machine to select and to use rules in said rule set as well as to operate databank according to reasoned result, containing tense attribute in both of fact and said rule.

Description

technical field [0001] The invention belongs to a knowledge representation method and a reasoning method in the field of artificial intelligence. technical background [0002] The production system was first proposed by the logician Post in 1943 as a production concept, and then it was perfected by Simon and Newell in 1965 and introduced into the knowledge-based system. At present, it is the most widely used knowledge representation method in the expert system, and this system is generally called a rule-based system. A production system includes: a database, a rule base, and a control module (sometimes also called a rule interpreter). The "database" is used to store data related to solving problems. The "rule base" stores rules, or productions, which represent general knowledge in the problem domain. The "control module" selects and uses the rules, resulting in the addition, deletion and modification of the database. In the traditional production system, the control modu...

Claims

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Application Information

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IPC IPC(8): G06N5/02G06N5/04G06F17/30
Inventor 汤庸吴凌坤左亚尧汤娜毛承洁
Owner SUN YAT SEN UNIV
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