JP2629955B2 - Expert system construction equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an expert system construction apparatus capable of easily and efficiently developing data of expert knowledge.

[Prior Art] Conventionally, an expert system construction apparatus incorporates the expert knowledge of an expert and acts on behalf of or assists the expert. When expressing the knowledge of a subject in the field on a device, in general, an expert having specialized knowledge in a certain technical field and a software development which analyzes and organizes the knowledge of the expert and expresses it as a computer program It is done in cooperation with engineers. That is, a software development engineer obtains expert knowledge in the technical field from an expert and programs it. Alternatively, the experts have gained knowledge of the computer and programmed their expertise. When creating the program of the expert knowledge, the expert knowledge is expressed using a production rule or a frame that expresses the expert knowledge as a correspondence relationship such as "If A, then B." LISP and Prol
The program was created using a programming language such as og.

[Problem to be Solved by the Invention] However, in such a conventional expert system construction apparatus, in order to make the specialized knowledge into a program, a software development engineer and an expert work together to make a program,
Experts had to acquire advanced computer knowledge, create programs and render them on devices. As described above, there is a problem that a great deal of labor of software development engineers and experts is required to express the knowledge of the experts on the device.

Therefore, an object of the present invention is to provide an expert system construction apparatus capable of easily expressing the expert knowledge of an expert as a knowledge base, in order to solve the above problems.

[Means for Solving the Problems] In order to achieve the object, the present invention has the following configuration as means for solving the problems. That is, as exemplified in FIG. 1, a plurality of qualified word names based on expert knowledge data and a plurality of qualified word names related to the qualified word name are stored in association with each other, and the A word storage means M1 for storing a processing program created correspondingly, and when a rule of a predetermined relationship is created,
The plurality of qualified word names stored in the phrase storage means M1 are displayed, and when one qualified word name is selected from the displayed plurality of qualified word names, the selected qualified name is displayed. Display control means M2 for displaying a plurality of modifier names stored in association with a modifier name; and a constituent sentence selected and created from the displayed modifier names, the A rule storage unit M3 for storing as a rule of a predetermined relation, and a conversion unit M4 for converting a rule composed of the constituent sentences into a program using each processing program corresponding to the modifier name stored in the phrase storage unit. This is the configuration of the expert system construction device characterized by comprising:

[Action] In the expert system construction apparatus having the above-described configuration, the word storage unit M1 associates a plurality of qualified word names based on expert knowledge data with a plurality of qualified word names related to the qualified word name. In addition to the storage, a processing program created in advance corresponding to the modifier name is stored.

Then, when creating a rule of a predetermined relationship, the display control means M2 displays the plurality of qualified words stored in the phrase storage means M1, and displays the displayed plurality of qualified words. When one qualified word name is selected from the names, a plurality of the qualified word names stored in association with the selected qualified word name are displayed. Next, the rule storage unit M3 stores the constituent sentence selected and created from the displayed plurality of modifier names as the rule having the predetermined relationship. Finally, the conversion means M4
Converts each rule composed of the constituent sentences into a program using each processing program corresponding to the modifier name stored in the phrase storage unit M1.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 2 is a system configuration diagram of an expert system construction apparatus according to one embodiment of the present invention. A keyboard 1 is used to input various symbols, codes, characters, and the like. In response to the input from the keyboard 1, the CPU 2 controls the Japanese interface 4 to convert it into Kana-Kanji corresponding to the input, and displays the conversion result on the CRT 6. Numeral 8 denotes a memory, in which various programs and data are stored in advance, and a phrase memory unit in which Japanese phrases and C ++ language programs corresponding to the phrases are stored.
10, a Japanese notation memory unit 12 for storing rules composed of sentences composed of Japanese words, a C ++ language notation memory unit 14 for storing C ++ language programs corresponding to the rules composed of Japanese sentences, and the like. Have.

Next, the processing performed in this embodiment will be described with reference to the flowchart of FIG.

First, a phrase in the specialty is created (step 100). This is created by a collaborative work between a specialist in the technical field of the technology and a software development engineer having computer expertise. The details will be described with reference to the flowchart shown in FIG.

First, the name of the class of the qualified word is input (step 110). The qualified word classification corresponds to a higher-order element in the technical field, and is a classification to which the qualified word described later belongs, and is a classification according to the property of the qualified word. For example, it is a classification of whether or not the qualified word is an integer, a real number, real time series data, or a control target. The name of the classification is input from the keyboard 1 in Japanese, and the input name is displayed on the CRT 6. At this time, the display screen of the CRT 6 is divided into three windows 6a, 6b, 6c as shown in FIG. 6, and the name is displayed in one of the windows 6a. The input words include, for example, "integer", "real number", "real number time-series data", and "control target".

Next, a definition corresponding to the input word of the input word classification is input (step 120). This definition is performed in a well-known object-oriented language, in this embodiment, the C ++ language. The object-oriented language input by the keyboard 1 is displayed in a window 6c of the CRT 6. For example, when the qualified word is “real number time series data”, it is defined as a set of integers in an object-oriented language.

When the definition is completed, the name of the qualified word is input (step 130). The qualified word belongs to any of the qualified word categories, and the phrase is input from the keyboard 1 in Japanese. This is, for example,
When the qualified word classification is defined as “real number time series data”, the qualified word belonging to the defined “real number time series data” is input in Japanese. The real number time-series data refers to data in which real numbers are sequentially input with the passage of time, for example, data in a case where measured values of the diameter of each shaft produced one after another are sequentially input. Modified words such as "shaft diameter" and "oil temperature", which are a set of "real number time series data", are input and displayed in the window 6c of the CRT 6. In this way, the qualified word of the technical field belonging to the “real number time series data” is input, and the qualified word classification, the definition of the qualified word in an object-oriented language,
The words to be modified are stored in the phrase memory unit 10 in association with each other.

Next, the name of the modifier in the specialized field that modifies the modifier classification is input from the keyboard 1 in Japanese (step 140). The modifier is a term of a lower element related to the class of the qualified word, which is the higher element, for example,
The words that qualify the qualified word classification “real number time series data” include “the latest ()”, “maximum value”, “minimum value”,
And the like. The modifiers at the time of this input are limited to the modifiers belonging to the modifier class "real number time series data" and the phrases that can directly modify the noun phrases. Then, a plurality of modifiers having the same level of parallel relationship are similarly input.

In this way, when the modifier and the modifier directly modifying the noun phrase belonging to this modifier classification are input, the modification is performed as long as the modifier does not end with a punctuation point, thereby forming a noun phrase. Shall be. For example, if "latest () pieces" of "shaft diameter" is entered, the noun phrase "shaft diameter latest ()" is obtained as a result of the modification.
Individual ". The noun phrase created in this way belongs to one of the qualified word classifications so that it is again modified by another qualified word.

In this way, based on the expert's expertise in the field of specialization, the class of modifiers and the modifiers that modify them are extracted and input in a state where their relations are maintained, forming a noun phrase. , This noun phrase is classified into any of the qualified word categories. When these modifiers are input from the keyboard 1 in Japanese, the phrases are displayed in the window 6b of the CRT 6 and stored in the phrase memory unit 10 in a state of maintaining the relationship.

Subsequently, the procedure of the modifier is input from the keyboard 1 (step 150). This procedure is a processing program created corresponding to a modifier as a lower element associated with a classification of a modifier as an upper element. This processing program is performed, for example, by an expert and a software development engineer, and the contents of the lower elements are written in a known object-oriented language, for example, a C ++ language. Then, the lower-order elements and the processing program written in the C ++ language are stored in the phrase memory unit 10 in association with each other.
In this embodiment, the C ++ language is used, but another language may be used.

The above-described processing is repeatedly executed as necessary by the joint work of the expert and the software development engineer. First, the names of the various qualified word classifications and their definitions are stored, and the qualified Words are stored. Next, various modifiers belonging to the definition are associated below the class of the qualified word to form a noun phrase, and the noun phrase is classified into any of the qualified word classes. The modifier is stored with the procedure. That is, the modifier directly related to the modifier and the noun phrase, and the C
The processing program in the ++ language is stored in relation to the qualified word. In this way, the names of a plurality of modifier classes, their definitions (programs), the plurality of modifiers belonging to the definition, the modifiers that directly modify the modifiers and noun phrases, and the modifiers modify The class of the modifier to which the noun phrase to be created belongs, and the procedure (program) that those modifiers mean are stored.

Once the phrase is created (step 100),
Next, a rule is created (step 200). The creation of these rules can be made without the assistance of a software development engineer, even for an expert who does not have the ability to program, and the qualified words created by the above-described word creation processing. , A rule composed of a predetermined constituent sentence by selecting a modifier, that is, the knowledge of an expert belonging to the technical field is expressed as a rule composed of a predetermined constituent sentence. The creation of this rule will be described with reference to the flowchart of FIG.

First, the display screen of the CRT 6 is opened in two windows 6d and 6e as shown in FIG. 8, and one window 6d is provided with "if" and "if" at predetermined intervals in this embodiment. Are displayed, and a plurality of "." Are displayed below each display. Then, the cursor 16 is displayed immediately to the right of “•” immediately below “if”, and the input position is determined (step 210). When the input position is determined, the word created in the word creation process (step 100) is displayed on the other window 6e according to the position of the cursor 16 (step 220).

First of all, since cursor 16 is on the right of “•”,
In the other window 6e, a word in which the word to be modified (step 130) created in the word creation process is stored, such as “shaft diameter”, is displayed. Then, move the mouse cursor 18 to any of the displayed words.
To select the input phrase (step 23).
0). When the word to be modified displayed on this window 6e is selected with the mouse cursor 18 and an instruction of a word is given, the word of the selected word to be modified is displayed at the position of the cursor 16 on one window 6d. . For example, the phrase “shaft diameter” is displayed to the right of “•”. When this phrase is specified, it is determined whether or not the input has been completed (step 240). This may be determined, for example, based on whether or not there is a period at the end of the input phrase.

If it is determined that the input has not been completed,
The processing of 220 and 230 is repeatedly executed, and a modifier capable of modifying the modifier, that is, a plurality of modifiers directly related to the modifier stored in the processing of step 140 is displayed on the other window 6e. Is displayed (Step 22
0). This modifier is also used to create the above-mentioned phrase (step 100).
Is a modifier that is related and stored in advance.
Mouse cursor over the modifier displayed on this window 6e
When selected at 18, the word of the selected modifier is displayed at the position of the cursor 16 on one window 6d (step 230). For example, when "latest ()" is selected, this word is displayed to the right of "shaft diameter", and the cursor 16 is moved to the right of that word. At this time, the cursor 16 is moved and the numeral, for example, 20 is inserted into () of the “(latest)”. If it is determined that the input has not been completed, steps 220 and 230 are performed again.
Is repeatedly executed.

Then, a plurality of modifiers that can directly modify the noun phrase composed of the modifier and the modifier are displayed on the other window 6e (step 220). This modifier is also a modifier stored in advance in association with the execution of the above-described phrase creation processing (step 100). When the modifier displayed on this window 6e is selected with the mouse cursor 18, the word of the selected modifier is changed to the cursor 16 on one window 6d.
The position is displayed (step 230). For example, when “maximum value” is selected, this phrase is displayed to the right of “the latest 20 shaft data”, and the cursor 16 is moved to the right of that phrase. Then, when it is determined that the input has not been completed, the processes of steps 220 and 230 are repeatedly executed.

Subsequently, similarly, this processing is repeatedly executed, and a modifier is selected. For example, when “is (10) mm” is selected and specified, the specification ends because there are punctuation marks. If so, the process is temporarily terminated. by this,
"The maximum of the last 20 shaft diameters is 10mm."
Is created. In creating the constituent sentence, the qualified word and the qualified word are displayed in Japanese, so that even if they do not have computer knowledge, they can be easily created.

On the other hand, if necessary, the above-described processing is executed again,
A modifier word and a modifier word are respectively selected to the right of the second "." Under "If", and similarly, another constituent sentence is, for example, "Oil temperature is 100C. . "Is created. The constituent sentence and the constituent sentence are predetermined to have a predetermined relation, for example, a relation specified as an and condition in the present embodiment. In this way, when the constituent sentence following “If” is formed, the constituent sentence following “If” is formed.

Due to the construction of this constituent statement, steps 220 and 23
The process of 0 is repeatedly executed, and in the process of step 220, the cursor 16 is moved to the right of “•” next to “If”. And, as in the case of "if",
The qualified word is displayed on the other window 6e (step
220). When the modifier to be displayed on the window 6e is selected with the mouse cursor 18, the word of the selected modifier is displayed at the position of the cursor 16 on one of the windows 6d (step 230). For example, if "Machine" is selected,
When this phrase is displayed to the right of “•”, the cursor 16 is moved to the right of that phrase. Then, when it is determined that the input has not been completed, the processes of steps 220 and 230 are repeatedly executed.

Next, a modifier that can modify the modifier, that is, a modifier related to the modifier stored in the process of step 140 is displayed on the other window 6e (step
220). When the modifier displayed on the window 6e is selected with the mouse cursor 18, the word of the selected modifier is displayed at the position of the cursor 16 on one of the windows 6d (step 230). For example, when “Stop” is selected, this word is displayed to the right of “Machine”, and the cursor 16 is moved to the right of that word. Then, when it is determined that the input has been completed, the present control process is temporarily terminated.

Further, when another constituent statement is set with the "stop machine" and "and" condition, the rule creation processing is repeatedly executed again. Then, the cursor 16 is moved to the right of the second "." Under "Nara", and the modifier is selected in the same manner as described above, and the modifier associated with the modifier is selected. Specify and create another configuration statement. For example, as another constituent sentence, a constituent sentence “notify the worker.” Can be created. The “notify the worker” and “stop the machine” are processed as and conditions, which are conditions of a predetermined relationship.

As described above, the constituent sentence below “if” is processed as an and condition which is a condition of a predetermined predetermined relation, and the constituent sentence below “if” is processed as an and condition which is a condition of a predetermined predetermined relation. Is done. Further, if the condition of the constituent sentence (and constituent sentence) following “if” is satisfied, a rule created by an expert to process the constituent sentence (and constituent sentence) following “if” is formed. You. Then, the rules composed of the constituent sentences in Japanese are stored in the Japanese notation memory unit 12.

After the rules of the specialized knowledge in Japanese are created in this way, the rule exchange processing is executed (step 30).
0). This rule conversion process is performed based on rules composed of constituent sentences in Japanese stored in the Japanese notation memory unit 12. That is, a processing program corresponding to a phrase constituting each constituent sentence of the rule created by executing the processing of step 200 is read from the phrase memory unit 10. This program is an object-oriented language C
It is written in the ++ language, and by using the message sending technology of the object-oriented language, a new program corresponding to the constituent statement can be easily generated.

That is, the modification relationship of the constituent sentence is similar to the message sending relationship of the object-oriented language. Also, as shown in FIG. 7, the constituent sentence is formed by modifying the qualifier immediately to the right of the modifier to generate a noun phrase, and modifying the qualifier immediately to the right of the noun phrase to modify the noun phrase. And generate
The modifier immediately to the right of the noun phrase modifies it to generate a noun phrase, and this is repeated,
Message sending may be performed in this order. Here, since each qualified word and the qualified word are defined in the C ++ language, the constituent sentence can be easily formed into a program by using a message sending technique of an object-oriented language.

Then, the “predetermined conditions”, “if” to
The read processing program is edited to be one program under the condition of “if”. This program is stored in the C ++ language notation memory unit 14.

The window of the display screen of the CRT 6 described above is not limited to the above-mentioned case, and various layouts can be considered.

Thus, the expert system construction apparatus of the present embodiment
For example, an expert and a software development engineer work together to create a qualified word and a qualified word based on the knowledge data of the expert, and store a processing program corresponding to the word in the word / phrase memory unit 10. In this way, a database is created using the expert knowledge data as a processing program corresponding to the words and phrases. After creating the database, the expert alone can create a constituent sentence consisting of the qualified word and the modifier, and create a rule having a predetermined relationship predetermined by the constituent sentence. This rule is converted into a reprogram by a message sending technique of an object-oriented language using a processing program corresponding to a phrase in the phrase memory unit 10.

Therefore, if you create a database of processing programs corresponding to words, you do not need to cooperate with software development engineers,
Alternatively, even if the user does not have the program capability, the expert alone can easily store his / her own specialized knowledge in the apparatus as a knowledge base.

As described above, the present invention is not limited to such embodiments at all, and can be implemented in various modes without departing from the gist of the present invention.

[Effects of the Invention] As described in detail above, the expert system construction apparatus of the present invention, when creating a database of processing programs corresponding to words and phrases, does not need to cooperate with a software development engineer or has the program capability. At least, it is possible for the expert to independently store his or her own specialized knowledge as a knowledge base in the device.

[Brief description of the drawings]

FIG. 1 is a block diagram of an expert system construction apparatus as one embodiment of the present invention, FIG. 2 is a system configuration diagram of the expert system construction apparatus of the embodiment, and FIG. 3 is executed in the embodiment. FIG. 4 is a flowchart showing a construction process, FIG. 4 is a flowchart showing a phrase creation process executed in this embodiment, and FIG.
FIG. 6 is a flowchart of a rule creation process which is also executed in this embodiment. FIG. 6 is a flowchart showing a CR in the word creation process of this embodiment.
T display screen explanatory diagram, FIG. 7 is an explanatory diagram for explaining the relationship between a qualified word and a modifier in this embodiment, and FIG. 8 is a CRT display screen explanatory diagram at the time of rule creation processing in this embodiment. is there. M1 ... word storage means, M2 ... display control means M3 ... rule storage means, M4 ... conversion means 1 ... keyboard, 2 ... CPU 4 ... Japanese interface 6 ... CRT, 8 ... memory 10 …… Phrase memory section 12 …… Japanese notation memory section 14 …… C ++ language notation memory section

Claims (1)

(57) [Claims] 1. A plurality of qualified word names based on expert knowledge data and a plurality of qualified word names related to the qualified word name are stored in association with each other and created in advance corresponding to the qualified word name. A word storage means for storing a processing program; and a plurality of said qualified word names stored in said word storage means are displayed when a rule of a predetermined relationship is created. Display control means for displaying a plurality of modifier names stored in association with the selected modifier name when one modifier name is selected from the word names; and A rule storage unit that stores a constituent sentence selected and created from a plurality of modifier names as a rule of the predetermined relationship; and a rule corresponding to the modifier name stored in the phrase storage unit. Using a processing program, a conversion means for converting the rules consisting of the configuration statement in the program, expert system construction apparatus comprising the.