JPH02263236A - Expert system - Google Patents

Abstract

PURPOSE:To improve the productivity in development of an expert system by using a hyper-text using a card to express the hierarchical relation of the data formed in a higher rank state including at least the state lower by one rank and deciding a specific state via the card. CONSTITUTION:A hyper-text control means 9 includes a link icon card control means 9a which displays a card and an answer menu and a state/card control means 9b which transfers the data on the card and the data on the hierarchical relation of states. Then the hierarchical relation of data is expressed in a hyper- text, and a certain specific state is decided via the card. The card forming the hyper-text displays a higher rank state and its connected lower rank state. When a card showing a lower rank state is produced, a user has the interactive answers to the questions of various cards. Then this card is obtained every time a state is fixed. Thus it is possible to resolve the problems of question- answer forms with use of the hyper-text and without using any special formation tool.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an expert system, and particularly to an expert system using hypertext.

[Conventional technology]

Expert systems incorporate the knowledge and know-how possessed by experts into a computer as a knowledge base, and
This is a computer system that allows users to solve problems through a question-and-answer format.

Nowadays, with the development of microcomputer technology, it has become possible to construct expert systems using small-scale computer systems such as workstations. - A simple expert system can be constructed by creating a specialized knowledge base for an expert system construction tool equipped with an inference engine and an explanation mechanism. Similarly,
A knowledge base can be created using a knowledge base construction tool.

[Problem to be solved by the invention]

However, although conventional expert system construction tools have data processing functions for inference, it is difficult to create knowledge bases themselves. On the other hand, knowledge base construction tools had the function of configuring data to create a knowledge base, but it was difficult to perform data processing such as inference.

Therefore, in order to realize an expert system on a small-scale computer system, it is necessary to prepare various construction tools, which poses the problem of poor productivity when developing the system.

An object of the present invention is to provide an expert system that can solve problems in a question-and-answer format using hypertext without requiring any special construction tools.

[Means to solve the problem]

In order to solve the above problems, the expert system according to the present invention includes a link icon/card control means for displaying a card (window) and an answer menu, and data on a hierarchical relationship between card data and status. The control means is provided with a state/card control means as a hypertext control means, and this hypertext control means expresses the hierarchical relationship of data in hypertext, and determines a specific state via the card. It was designed to do so.

[Effect]

The cards that make up the hypertext display a higher-level state and lower-level states connected to it. When the upper state is determined to be a specific state as specified by the user, the system sets the lower state by inference,
Create a card that shows the configured lower status and display it on the screen.

A card indicating a lower status is created each time a user interactively answers questions on various cards and one status is determined. Therefore, by sequentially determining the answers to the questions on the displayed cards, one state can finally be determined.

〔Example〕

An embodiment of the expert system according to the present invention will be described below.

FIG. 1 is a block diagram showing the basic configuration of an expert system according to the present invention.

In FIG. 1, 1 is a display control unit that controls the display 2 and displays cards (windows) corresponding to each state, and 3 is a display control unit that controls input/output of commands and data input from the keyboard 4 and mouse 5. The keyboard/mouse control unit 6 is a state storage device in which a hierarchically structured knowledge base is stored.

The knowledge bases stored in the state storage device 6 are in a relationship such that a higher level state includes one or more lower level states, as shown in FIG. Further, each of these upper or lower states is classified according to a hierarchical structure as shown in FIG.

Reference numeral 6a denotes a card storage device in which data related to cards, which will be described later, is stored; 7, a storage device control unit that controls data input/output in the state storage device 6 and the card storage device 6a; and 8, an operating system that operates as an expert system. Programs, keyboard 4 and mouse 5
This is the main memory where instructions and data input from the computer are stored.

9 is a CPU (central processing unit) that controls the entire system by a program corresponding to instructions input from the keyboard/mouse control unit 3 and performs predetermined arithmetic processing; 9a is a link that displays cards and an answer menu; The icon/card control means 9b is a state/card control means that passes data on the hierarchical relationship between card data and state to the link icon/card control means 9a.

The link icon/card control means 9a and the state/card control means 9b are controlled by the CPU as a hypertext control means.
Included in 9. Further, 1o is a system bus.

FIG. 4 shows a specific example of hypertext displayed on the display 2 in the above-mentioned expert system. In FIG. 4, a card (window) 11 constituting hypertext has a title 12 in which the title of the card is displayed, text information 13, graphic information 14, and other cards (in this example) as contents of the card 11. It consists of a link icon 15 connected to the card 2).

When the hierarchical relationship of the state shown in FIG. 3 is expressed using the above-mentioned hypertext, it can be expressed as shown in FIG. 5. In FIG. 5, the status card 21 includes a link icon 24 connected to the question card 22 and a link icon 25 connected to lower statuses (in this example, status 2. to status 4.). and link icon 2
When 4 is selected, a question card 22 that displays questions for determining the status is opened, and when one of the link icons 25 is selected, the selected subordinate status card is opened. In FIG. 5, state 2. The status card 23 connected to the is opened.

Condition 2. When the link icon 24 of the status card 23 connected to is selected, a further question card 22 is opened,
When this question card 22 is confirmed as "Yes", state 2.
will be decided. For this reason, 1. Condition 2. The status card 23 connected to contains a link icon 26 connected to a conclusion card 27. Further, when no state is determined, a conclusion card 28 (conclusion - unknown) is displayed.

Figure 6 is an explanatory diagram showing the operation of the system when creating the hypertext mentioned above. Figures denoted by the same symbols as in Figure 1 schematically represent the functions of the same parts in Figure 1. It is something.

In the figure, when the state is determined by the user's selection, the state/card control means 9b changes the hierarchical relationship between the data of the state card 21 displayed on the screen and the state stored in the state storage device 6. The receiver passes the data to the link icon card control means 9a. The link icon card control means 9a creates a question card 22 and an answer menu 29 from this data, the link icon data in the status card 21, and the data in the card storage device 6a,
indicate.

Next, the inference process is displayed using hypertext,
The operation when determining a certain specific state will be explained with reference to FIGS. 7 and 8. In FIGS. 7 and 8, the right half represents the display state on the screen, and the left half represents the determined state within the system.

First, as shown in FIG. 7(a), the highest state 1.
is in question, and state 1. is in progress as shown in FIG. Display the question card and its answer menu. Here, if the user selects "Yes", the state 1. is set to "Yes", and the question card in state 2 and its answer menu are displayed as shown in FIG. 2(d).

Condition 2. Since the lower state is not connected, if the user selects 1, "Yes", state 2 is determined as shown in (e) of the same figure, and state 2 is determined as shown in (f) of the same figure.
．． Display the conclusion card.

This allows the user to obtain information A displayed on the conclusion card.

On the other hand, FIG. 8 shows the operation when ``No'' is selected in FIG. 7(d). Note that FIG. 8(a) corresponds to the display state of FIG. 7(d).

In FIG. 8(a), when "No" is selected, the state 2 is shown in FIG. 8(b). ``No° 1 move is confirmed, and as shown in the same figure (C), the question card for the next state 3. and its answer menu are displayed.Here, if the user selects ``I don't know,'' Then, as shown in (d) of the same figure, state 3° is confirmed as "I don't know", and then the question card of state 4 and its answer menu are displayed as shown in (e) of the same figure. Here, if the user selects "No", state 4 is determined to be "No" as shown in FIG.

In this case, state 2. ~State 4. Since "Yes" has not been confirmed in all the states up to this point, the system does not make a final conclusion and displays a conclusion card (Conclusion - Unknown) as shown in FIG. 2(g).

Next, the processing procedure of the above-mentioned operation will be explained based on the flowchart of FIG.

First, the highest status card is interrogated and saddle stitched (step 101), and it is determined whether the status card is in an undetermined status (step 102). Note that this state represents the internal state of the system and is not displayed on the screen.

Here, if the status card is unconfirmed, the question card is opened from the link icon included in the status card being questioned (step 103). Then, to display the answer menu (step 104), select "Yes" for the answer menu.
It is determined whether the answer is (step 105). Here, if there is an answer of "Yes", the display of the answer menu is canceled (Step 106), and the status card under question is confirmed as "1 Yes" (Step 107).Subsequently, the status card under question is confirmed as "1 Yes". One link icon of a lower status card is read from the status card (step 108). Here, it is determined whether the link icon has been loaded or not (Step 109), and if it has been loaded, the status card of the link icon is displayed as being questioned (Step 110), Step 10
Return to 2.

In addition, if the link icon of the lower status card cannot be read in step 109, the link icon of the conclusion card is read from the status card confirmed as "Yes" (step 111), and the conclusion card is opened from the read link icon. (Step 112).

On the other hand, if the status card is not in an undetermined state in step 102, it is determined whether the status card is determined to be "yes" (step 113). Here, if "Yes" is confirmed, the process returns to step 108, and if "Yes" is not confirmed, link the next status card from among the higher status cards that are confirmed as "Yes". One icon is loaded (step 114).

For example, state fi2. If “Yes” is not confirmed, “
For the card in state 1, which has been confirmed as "Yes", the link icon in state 3, which is the next state after state 2, is read (see Figure 5).Next, it is difficult to judge whether the link icon has been read. Step 115), if the link icon can be read, return to step 110. If the link icon cannot be read, open the conclusion/unclear card of the conclusion cards (step 116).

On the other hand, if there is no answer of "yes" in step 105, it is then determined whether the answer is "no" (step 117). Here, if the answer is "No", step 1 to cancel the display of the answer menu.
18), Confirm the status card under question to “No” (
Step 119). Also, in step 117, “
If there is no answer of "No," the display of the answer menu is canceled (step 120). Thereafter, the processing from step 114 described above is performed.

【Effect of the invention〕

As explained above, in the expert system according to the present invention, the hierarchical relationship of data constituted by a higher-order state that includes at least one lower-order state is
Since the system is expressed by a computer text using cards, and a specific state is determined through the cards, there is no need to build a knowledge base using special construction tools, which improves productivity when developing the system. can be improved.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing the basic configuration of the expert system according to the present invention, Fig. 2 is an explanatory diagram showing the relationship between the states of the knowledge base, Fig. 3 is an explanatory diagram showing its hierarchical structure, and Fig. 4 5 is an explanatory diagram showing a specific example of hypertext, FIG. 5 is an explanatory diagram when the hierarchical relationship of states is expressed using hypertext, FIG. 7 and 8 are explanatory diagrams showing the display state on the screen and the determined state within the system, and FIG. 9 is a flowchart showing the processing procedure when determining a certain specific state. 6...Status storage device, 9...CPU, 9a...Link icon/card control means, 9b...Status/card control means, 11...Card (window), 12.
...Title, 13...Text information, 14...Graphic information, 15. 24-26...Link icon, 21....Status card, 2...Question card, 27. 28... Conclusion card. Figure 1 Figure 4 Figure 2/ Figure 5

Claims (1)

[Claims] a display unit that displays a window having text information;
In an expert system comprising an input instruction section for specifying displayed text information, a hierarchical relationship of data constituted by a higher-order state that includes at least one lower-order state is expressed by hypertext using cards. An expert system comprising a hypertext control means and determining a specific state via a displayed hypertext card.