JPH05313900A - Support system for diagnostic expert system development - Google Patents

Abstract

PURPOSE:To provide the support device for diagnostic expert system development which can acquire knowledge more easily by changing a diagnostic test method knowledge input screen to the one for a specified diagnosis as an object and also freely change the interactive form of a system and a user at the time of diagnostic execution corresponding to a diagnostic object. CONSTITUTION:A diagnostic test component register/control part 7 registers a form for discriminating whether respective events recorded in registered event relating knowledge and inputted from a terminal part 1 as the template of a flowchart form actually occurred or not in a diagnostic test component storage part 8 as diagnostic test components. When a knowledge inputting person selects a desired component, a diagnostic test method knowledge register/ control part 9 retrieves the corresponding component from the diagnostic test component storage part 8, generates the diagnostic test method knowledge input screen based on the retrieved component to be outputted to the terminal part 1 and converts the contents of the diagnostic test method inputted based on the outputted input screen to the registering form of the diagnostic test method knowledge to be registered in a diagnostic test method knowledge storage part 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applicable to various diagnostic problems such as defect diagnosis and equipment diagnosis in production sites of various manufacturing industries, abnormality diagnosis in plants, decision making in various service industries, and diagnosis in the medical field. The present invention relates to a diagnostic expert system development support device used in developing a diagnostic expert system in the field.

[0002]

2. Description of the Related Art As is well known, an expert system is a part of intellectual problem solving performed by a skilled engineer, that is, a domain expert, by converting the know-how possessed by a skilled engineer into a knowledge base. Or, the purpose is to do everything with a computer.

Such an expert system is expected to play a role as a decision making function in various fields such as diagnosis, planning, design and control. Of these, the diagnosis expert system, which is typified by a failure diagnosis that identifies the failed part of the equipment and a failure diagnosis that identifies the cause of failure in the product and countermeasures, is used when abnormal symptoms occur in the target system. The purpose is to determine the cause of the abnormal symptom by utilizing the observed symptom, various data, and knowledge about the system.

In a general diagnostic expert system, an associative network expressing phenomena such as a symptom occurring in a diagnosis target or a cause and a relation between the events is held as a part of a knowledge base. Then, from the first detected abnormal symptom, the event that caused the abnormal symptom is traced on the above-mentioned associative network to search for an inference result.

Therefore, in order to construct a diagnosis expert system, the associative network, that is, the event relation knowledge containing the relation between the events occurring in the diagnosis target and the route selection judgment at the branch of the associative network, that is, It is necessary to have knowledge of a diagnostic test method that includes a method for determining whether or not each event described in the event-related knowledge actually occurred.

In the conventionally developed diagnostic expert system development support device, the event relation knowledge and the diagnostic test method knowledge necessary for constructing the diagnostic expert system are described (input) in the form of a diagram or a table. By providing the knowledge input screen that can be provided, the knowledge base can be efficiently developed.

These diagnostic expert system development support devices output an event-related knowledge input screen, output event-related knowledge registration means for registering event-related knowledge input based on this screen, and output a diagnostic test method knowledge input screen. The diagnostic test method knowledge registration means for registering the diagnostic test method knowledge input based on this screen, and the terminal device for interacting with the developer via the respective knowledge input screens.

Further, the conventionally developed diagnostic expert system development support device is equipped with a diagnostic execution unit for interpreting the contents described in the knowledge base registered by the above two knowledge registration means and executing the diagnosis. There are also cases.
This diagnostic execution unit, by inputting abnormal symptoms,
The reasoning is obtained by tracing the cause on the associative network stored in the event-related knowledge.

By using such a diagnostic expert system development support device, a knowledge input screen displayed in a format suitable for expressing knowledge for solving a diagnostic problem is provided. The knowledge base required for the configuration can be efficiently developed in a short period of time, and the contents of the registered knowledge can be easily grasped visually, so that there is an application effect that the knowledge can be easily managed and updated. ..

However, in the conventional diagnostic expert system development support device, the description of the method of registering the diagnostic test method knowledge and determining whether or not each event actually occurred does not depend on the diagnostic target. It depends on the form of expression, which could not be modified for a particular diagnostic area. For example, in the diagnostic test method knowledge registration means, "data name comparison operator data value"

An attempt is made to develop an "automobile failure diagnosis system" by a diagnosis expert system development support device in which such a general-purpose description format is defined as the input format of the knowledge input screen provided by the knowledge of the diagnostic test method. For example, the condition for confirming the occurrence of the phenomenon "insufficiency of engine oil" is entered in the knowledge input screen in the form of "remaining engine oil <= 1 liter".

On the other hand, the diagnostic execution unit of the conventional diagnostic expert system development support apparatus uses a knowledge base created by a knowledge input person through the knowledge input screens provided by the two types of knowledge registration means as a general purpose regardless of the diagnosis target. It was assumed that the diagnostic procedure would be performed by interpreting the procedure.

For example, at the time of executing the diagnosis, in order to determine whether or not "insufficiency of engine oil" has occurred, it is necessary to determine whether or not the condition statement "remaining amount of engine oil <= 1 liter" is true or false. "How much engine oil is left?"
By asking the user such a question, the necessary data was collected.

Therefore, when verifying the requirement that the system and the user should be able to carry out a specific dialogue as a fault diagnosis of an automobile, for example, in the case of "insufficient engine oil" in the above-mentioned example, "using an oil gauge engine With the guidance such as "Please measure the remaining amount of oil" and "Is the oil gauge showing empty?", The "automobile failure diagnosis system" that shows the user how to measure the remaining amount of engine oil is provided. It was difficult to develop.

The reason is that the knowledge input screen provided by the diagnostic test method knowledge registration means is not provided with means for entering knowledge of such an operation method.
Also, the diagnosis execution unit does not have the flexibility to change the diagnosis method for a specific diagnosis target.

That is, how the particular judgment object has a special judgment procedure is generally completely different depending on the diagnosis object, and the diagnostic test method knowledge registration means is used by the general purpose on the knowledge input screen. It was difficult to envision a general framework.

Further, it is assumed that the diagnostic procedure such as the interactive method with respect to the insufficient data possessed by the diagnostic execution unit is a general procedure regardless of the diagnostic target. It was difficult to change this to a procedure for specific diagnostic targets.

[0018]

As described above, in the conventional diagnostic expert system development support device, the format of the knowledge input screen provided by the diagnostic test method knowledge registration means is changed to a format convenient for a specific diagnosis target. There was no means to do so, and the knowledge of diagnostic test methods had to be described within the framework of a general expression format regardless of the diagnostic target.

Further, the diagnosis execution unit is limited to interpreting the knowledge base and executing the diagnosis by a general procedure regardless of the diagnosis target. There was no way to allow the user and the diagnostic expert system to carry out the appropriate interaction.

Therefore, according to the present invention, the input screen of the knowledge of the diagnostic test method can be changed to a specific diagnostic object to facilitate the acquisition of the knowledge, and at the same time, the diagnostic expert system and the user at the time of executing the diagnostic It is an object of the present invention to provide a diagnostic expert system development support device capable of freely changing the interactive form of (1) according to a diagnosis target.

[0021]

A diagnostic expert system development support apparatus of the present invention outputs an event-related knowledge input screen and displays the relationship between events occurring in a diagnosis target input based on this event-related knowledge input screen. The event-related knowledge registration means for registering the event-related knowledge as the content and the diagnostic test part registration screen are output, and based on this diagnostic test part registration screen, each event described in the event-related knowledge actually occurs. By inputting the template of the diagnostic test method for determining whether or not it has been performed as a flow chart template, the diagnostic test part registration means for registering this as a diagnostic test part and the diagnostic test registered by this diagnostic test part registration means By selecting one of the parts, a diagnostic test method knowledge input screen is generated and output from this selected diagnostic test part. Then, the diagnostic test method knowledge registration means for registering the content of the diagnostic test method input based on the output screen of the diagnostic test method knowledge as the diagnostic test method knowledge, and the registered event relation knowledge and diagnostic test method knowledge. And a diagnosis execution means for inferring the cause of the symptom from the generated symptom by interpreting the above and inquiring information necessary for the diagnosis to the outside.

[0022]

According to the present invention, the knowledge input person determines whether or not each of the events described in the event relationship knowledge actually occurs via the diagnostic test method knowledge input screen output by the diagnostic test method knowledge registration means. Before inputting diagnostic test method knowledge, which includes an interactive method or a data search method to determine the occurrence of an event specific to the diagnosis target, use the diagnostic test part registration screen output by the diagnostic test part registration means. This method can be registered as a diagnostic test part.

The diagnostic test method knowledge registration means causes the knowledge input person to select an appropriate diagnostic test component from the registered diagnostic test components when the knowledge input person inputs the diagnostic test method knowledge. Thereby, the diagnostic test method knowledge registration means,
Generates and outputs the input screen of the diagnostic test method knowledge for the diagnostic target from the template described in the diagnostic test part. The knowledge input person can input the diagnostic test method knowledge through the output diagnostic test method knowledge input screen.

Further, at the diagnostic execution stage, the diagnostic execution means interprets the registered diagnostic test method knowledge and makes a dialogue when inquiring necessary information to the outside.
Instead of performing a general procedure regardless of the diagnosis target, the determination is made in accordance with the determination procedure described in the diagnostic test part, and the format is changed to an appropriate format for the diagnosis target.

As described above, the present invention changes the input screen of the knowledge of the diagnostic test method to the specific diagnostic object by adding the function of registering the judgment method peculiar to the specific diagnostic object as the diagnostic test part. Thus, it is possible to further facilitate the acquisition of knowledge, and it is possible to freely change the dialog format between the diagnostic expert system and the user during execution of the diagnosis according to the diagnosis target.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the configuration of a diagnostic expert system development support apparatus according to this embodiment. In the figure, reference numeral 1 is a terminal unit for exchanging various kinds of information between a knowledge input person or a user at the time of executing diagnosis and this apparatus, and a CRT display section 2 for displaying various screens, and this display section 2 A keyboard section 3 for inputting various data based on the display screen, and a control section 4 to which these are connected.
It is composed by.

Reference numeral 5 is an event-related knowledge registration control unit, which is the terminal unit 1.
Is registered (stored) in the event-related knowledge storage unit 6 with the event-related knowledge having the relationship between the events occurring in the diagnosis target input by the command, or the registered event-related knowledge is edited. ..

Reference numeral 7 is a diagnostic test component registration control unit, which actually records each event described in the event-related knowledge registered in the event-related knowledge storage unit 6 which is input by the terminal unit 1 as a template in the form of a judgment flowchart. The template for determining whether or not it has occurred is registered (stored) in the diagnostic test component storage unit 8 as a diagnostic test component, or the registered diagnostic test component is edited.

Reference numeral 9 denotes a diagnostic test method knowledge registration control unit, which is a diagnostic test method knowledge having contents as to whether or not each of the events described in the event relation knowledge registered in the event relation knowledge storage unit 6 actually occurred. Is registered (stored) in the diagnostic test method knowledge storage unit 10, and when the knowledge input person selects a desired diagnostic test component, the corresponding diagnostic test component is retrieved from the diagnostic test component storage unit 8 and read out. Search section 1
1. A knowledge input screen generation unit 12 for generating a diagnostic test method knowledge input screen based on the template written in the diagnostic test component read by the component search unit 11 and displaying the knowledge input screen on the display unit 2 of the terminal unit 1. , And a knowledge conversion unit for converting the content of the diagnostic test method input based on the displayed diagnostic test method knowledge input screen into the diagnostic test method knowledge registration format and registering it in the diagnostic test method knowledge storage unit 10. It is composed of 13.

Reference numeral 14 is a diagnostic execution unit, which interprets the event-related knowledge registered in the event-related knowledge storage unit 6 and the diagnostic test method knowledge registered in the diagnostic test method knowledge storage unit 10 to obtain information necessary for diagnosis. Is inquired to the outside through the terminal unit 1, the cause of the symptom is inferred from the symptom that occurred, and the inference result is output to the display unit 2 of the terminal unit 1.

The details of the present apparatus will be described below with reference to the flow of FIG. 2 by taking as an example the development of a defect diagnosis expert system in a cathode ray tube production process. Note that FIG. 2 schematically shows a process in which a knowledge input person develops a new diagnostic expert system by using the diagnostic expert system development support device having the configuration shown in FIG.

First, the knowledge input person describes (inputs) event related knowledge or describes diagnostic test parts. Either of these may be performed first, but in the following description, the event-related knowledge will be described first. To describe event-related knowledge, use the event-related knowledge input screen,
The contents are registered in the event-related knowledge storage unit 6 via the terminal unit 1.

That is, by setting the event-related knowledge registration mode with the keyboard unit 3 of the terminal unit 1, the event-related knowledge input screen as shown in FIG. 3 is displayed on the display unit 2 of the terminal unit 1. .. On this event-related knowledge input screen, the knowledge input person considers what is considered as a defect, what is considered to be the cause, what is considered as a cause, and the intermediate cause to be considered while inferring a specific cause from a defect. The keyboard unit 3 is used to input an event that occurs in the CRT that is the object of diagnosis, such as what is included in such an event. Along with this, the semantic relationship between events, such as which event and which event has a cause-effect relationship, is also entered.

On the event relation knowledge input screen shown in FIG. 3, the knowledge input person can describe the event relation knowledge as a network in which the events are represented by nodes and the relation between the events is represented by links.
In the upper part of the screen, defects such as "streak-like unevenness" and "dot-like unevenness" that occur in the cathode ray tube production process are described. On the other hand, in the lower part of the screen, candidates that are considered to be the causes such as "high exposure temperature" and "abnormality of Doug material" are described. The "abnormality of material components" described in the center of the screen is an event that is considered in the middle.

Candidates that are considered to be the cause of "streak unevenness" are "high exposure temperature" and "abnormality of material components".
Those that have a relationship between events, such as, are linked by a link.

On the right side of the screen, operation buttons 15 such as "node creation", "node modification", "link creation" and "link modification" are provided so that a knowledge input person can freely edit such a network diagram. Is prepared.

Next, the description of the diagnostic test component is performed via the terminal unit 1 using the diagnostic test component registration screen,
The content is registered in the diagnostic test component storage unit 8. That is, by setting the diagnostic test component registration mode by the keyboard unit 3 of the terminal unit 1, the display unit 2 of the terminal unit 1 displays a diagnostic test component registration screen as shown in FIG. 4, for example. On this diagnostic test part registration screen,
The knowledge input person can define a procedure for determining whether or not a certain event has occurred and register it as a diagnostic test part.

On the diagnostic test part registration screen shown in FIG. 4, a procedure for determining whether or not the values such as temperature setting and speed setting of various equipment used in the production of cathode ray tubes are not out of the specified values. Consider the case of registering as one component called "specified value test".

The determination procedure is described by a flow chart expressed by three types of blocks, which are a circle, a rectangle, and a diamond. The circle means the final judgment, "affirmation (judging that the event has occurred)", "denial (judging that the event has not occurred)", "no evaluation (do not judge either)". Take either of the above as the value in the box. The rectangle means a comment, and the text written in the box is output. The rhombus means the judgment by the question, and the question sentence written in the box is uttered, and the route is selected according to the answer.

The knowledge input person selects an operation button 16 provided on the right side of the screen to define a judgment procedure by combining arbitrary blocks on the screen. Also,
Operation buttons 17 for creating and editing links between blocks are also prepared.

The diagnostic test part registration screen of FIG. 4 shows a state in which the definition of the "specified value test" is completed. That is, as a judgment procedure, first, a judgment Q1 based on a question is made. The question text of Q1 is blank. In this way, the unfinished parts on the flowchart are filled and used when the parts are used. The choices by Q1 are "yes" and "no"
There are two, and if "yes", make the final decision. What to make this final decision is not defined as a part. In the case of "no", judge by question Q2. Q
The second question is also blank.

Hereinafter, the judgment is made by the same procedure. In the comment C1, the output content "contact the work manager" is defined as a part. Judgment by question Q3 defines four types of selection items: "Fault is fixed", "No change", "Fault is worse", and "Other faults occur".

In this way, when the description of the event-related knowledge and the description of the diagnostic test parts are completed, the diagnostic test method knowledge is described via the terminal unit 1. According to the example of the event-related knowledge shown in FIG. 3, the description of the diagnostic test method knowledge defines a method for determining whether or not the event has occurred for each of four causative events and one intermediate event. To do.

For example, let us define a diagnostic test method for determining the occurrence of "high exposure temperature". First, the knowledge input person sets the diagnostic test method knowledge registration mode by the keyboard unit 3 of the terminal unit 1, so that the display unit 2 of the terminal unit 1 displays a diagnostic test part selection screen as shown in FIG. 5, for example. Is displayed. On this diagnostic test component selection screen, the knowledge input person selects a diagnostic test component for describing the diagnostic test method knowledge for "high exposure temperature".

The diagnostic test part selection screen shown in FIG.
Three types of diagnostic test parts, “specified value test”, “adjustment test”, and “material test” registered by the knowledge input person via the diagnostic test part registration control unit 7 are displayed in the menu. For example, select “specified value test”.

When the diagnostic test component is selected in this way, the component retrieval unit 11 retrieves and reads the corresponding diagnostic test component from the diagnostic test component storage unit 8 and sends it to the knowledge input screen generation unit 12. The knowledge input screen generation unit 12 generates a diagnostic test method knowledge input screen for inputting knowledge for determining the occurrence of “high exposure temperature” based on the selected diagnostic test component, and displays it on the terminal unit 1. Displayed in Part 2.

FIG. 6 shows the "specified value test" registered in FIG.
An example of the diagnostic test method knowledge input screen generated from the flowchart of FIG. In the figure, an underlined portion 18 indicates a portion where a sentence is to be input, and 19 is a portion where a menu is selected and input.

When the diagnostic test method knowledge input screen is output, the knowledge input person inputs with the keyboard unit 3 based on this screen. FIG. 7 shows an example of a situation in which the knowledge input person inputs the diagnostic test method knowledge using the diagnostic test method knowledge input screen shown in FIG. As shown in the figure, the procedure to determine whether the exposure temperature is at the specified value and try to eliminate defects by returning the exposure temperature to the specified value is performed from the diagnostic test part "specified value test". It can be defined by the generated diagnostic test method knowledge input screen.

FIG. 8 is a diagram in which the input result of the diagnostic test method knowledge shown in FIG. 7 is reconverted into the format of the judgment flowchart. As is clear from FIG. 8, the unfinished determination flowchart of the diagnostic test component shown in FIG. 4 is completed as a method for determining “high exposure temperature”.

In this way, the contents input on the diagnostic test method knowledge input screen are converted into the diagnostic test method knowledge registration format by the knowledge conversion unit 13 and stored in the diagnostic test method knowledge storage unit 10 as a part of the diagnostic test method knowledge. be registered.

Thereafter, the same procedure as shown in FIG.
The description of the diagnostic test method knowledge ends by defining, for each of one causal event and one intermediate event, a method for determining whether the event actually occurs.

In this process, it is not necessary that only one judgment method can describe one event. As a method to judge "high exposure temperature", "specified value test"
In addition to the determination method defined by, the method of intentionally shifting the exposure temperature to a value other than the specified value to adjust whether or not the defect is corrected may be defined by the “adjustment test”. As described above, each description (input) of event-related knowledge, diagnostic test parts, and diagnostic test method knowledge, that is, registration is completed.

The diagnostic execution unit 14 interprets the event-related knowledge registered in the event-related knowledge storage unit 6 and the diagnostic test method knowledge registered in the diagnostic test method knowledge storage unit 10 when requested by the user, Run diagnostics.

That is, when the user inputs a diagnostic execution command with the keyboard section 3 of the terminal section 1, the diagnostic execution screen as shown in FIG. 9 is displayed on the display section 2 of the terminal section 1. The user performs a diagnosis by executing a response operation based on this screen. Diagnosis is performed by following a link from the symptom that has occurred with the knowledge of event relationships, selecting an event that can explain the symptom as a candidate, and determining whether or not each candidate event has occurred. Judge by applying knowledge.

The example of FIG. 9 shows an example of a dialogue between the system and the user when "streak unevenness" occurs. First, the system is shown in FIG.
Based on the event-related knowledge shown in (2), two possibilities were detected: "high exposure temperature" and "material component abnormality".

Next, in order to verify "high exposure temperature", dialogue based on the judgment procedure shown in FIG. 8 was executed. After that, the defect was corrected by returning the exposure temperature to the specified value of 25 ° C. Therefore, it was determined that the cause was “high exposure temperature”.

As described above, according to the above embodiment,
The knowledge input person uses the diagnostic test method knowledge input screen provided by the diagnostic test method knowledge registration mode to determine whether or not each event described in the event-related knowledge actually occurs. Before inputting the test method knowledge, use the diagnostic test part registration screen provided by the diagnostic test part registration mode to define the method of determining the occurrence of an event specific to the diagnosis target as a part that is expressed as a flowchart template. , Can be registered.

The diagnostic test method knowledge registration mode allows the knowledge input person to select an appropriate diagnostic test component from the registered diagnostic test components when the knowledge input person inputs the diagnostic test method knowledge. As a result, the diagnostic test method knowledge input screen for the diagnostic target is generated and output from the template described in the selected diagnostic test component. The knowledge input person can input the diagnostic test method knowledge through the output diagnostic test method knowledge input screen.

Further, in the diagnosis execution stage, the diagnosis execution unit interprets the registered diagnostic test method knowledge and carries out a dialogue when performing necessary data to the outside, regardless of a general diagnosis target. According to the flow chart described in the diagnostic test parts,
The judgment is made by changing to a format suitable for the diagnosis target.

As described above, by adding the function of registering the diagnostic method peculiar to a specific diagnostic target as a diagnostic test part, the input screen of the diagnostic test method knowledge is changed to a specific diagnostic target, and more knowledge is obtained. In addition to facilitating the acquisition, it is possible to freely change the interaction form between the system and the user in the diagnosis execution stage according to the diagnosis target.

The present invention is not limited to the above embodiment. For example, the formats of the knowledge input screen and the component selection screen provided by the event-related knowledge registration mode, the diagnostic test method knowledge registration mode, and the diagnostic test component registration mode are not limited to those in the above embodiment, and the respective registration modes are Various modifications can be made without departing from the purpose of the invention.

In the above embodiment, the event relation knowledge is
Although the event is expressed by the network diagram in which the relationship between the node events is used as a link, it is also possible to change the table format so that the relationship between the events becomes clear.

Further, the judgment procedure constituting the diagnostic test component is described in the form of a flow chart composed of three kinds of blocks, but the description form of the diagnostic test component is pseudo natural language or a dedicated programming language. You can use it. Further, even in the case of assuming a flow chart format, in addition to the three types of blocks described in the above embodiment, a block that activates a program created by a knowledge input person, or a block that makes a determination based on the result of invoking the program , The repertoire may be increased as necessary, such as a block that executes a search to an external database.

Further, it is not necessary that all the diagnostic test parts are prepared by the knowledge input person, and some of them may be supplied as built-in parts in the present apparatus. Of course, various modifications may be made without departing from the scope of the present invention.

[0066]

As described above in detail, according to the present invention, the input screen of the knowledge of the diagnostic test method can be changed for a specific diagnosis target to make it easier to acquire the knowledge and at the time of executing the diagnosis. It is possible to provide a diagnostic expert system development support device capable of freely changing the interactive form between the diagnostic expert system and the user in (1) according to the diagnostic target.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a diagnostic expert system development support device according to an embodiment of the present invention.

FIG. 2 is a diagram schematically showing a process of developing a diagnostic expert system.

FIG. 3 is a diagram showing an example of an event-related knowledge input screen.

FIG. 4 is a diagram showing an example of a diagnostic test part registration screen.

FIG. 5 is a diagram showing an example of a diagnostic test part selection screen.

FIG. 6 is a diagram showing an example of a diagnostic test method knowledge input screen.

7 is a diagram showing an example of a situation in which diagnostic test method knowledge is input to the diagnostic test method knowledge input screen of FIG.

8 is a diagram showing the knowledge of the diagnostic test method of FIG. 7 in the form of a flow chart.

FIG. 9 is a diagram showing an example of a diagnosis execution screen.

[Explanation of symbols]

1 ... Terminal part, 2 ... CRT display part, 3 ... keyboard part, 4 ... control part, 5 ... event-related knowledge registration control part, 6
... event-related knowledge storage unit, 7 ... diagnostic test component registration control unit, 8 ... diagnostic test component storage unit, 9 ... diagnostic test method knowledge registration control unit, 10 ... diagnostic test method knowledge storage unit, 11 ... ... Parts search unit, 12 ... Knowledge input screen generation unit, 13 ... Knowledge conversion unit, 14 ... Diagnostic execution unit.

Claims (1)

[Claims] 1. An event-related knowledge registration means for outputting an event-related knowledge input screen, and registering event-related knowledge having a relationship between events occurring in a diagnosis target, which is input based on the event-related knowledge input screen, , A diagnostic test part registration screen is output, and based on this diagnostic test part registration screen, a template of a diagnostic test method for determining whether or not each of the events described in the event-related knowledge actually occurred occurs in the form of a flowchart. By inputting it as a template for the diagnostic test part, the diagnostic test part registering means for registering this as a diagnostic test part, and selecting one of the diagnostic test parts registered by the diagnostic test part registering means The diagnostic test method knowledge input screen is generated and output from the test part, and the diagnostic test method knowledge input screen is input based on this output. By registering the diagnostic test method knowledge registration means for registering the contents of the diagnostic test method as the diagnostic test method knowledge, interpreting the registered event relationship knowledge and diagnostic test method knowledge, and inquiring information necessary for diagnosis to the outside. A diagnostic expert system development support device comprising: a diagnostic execution unit that deduces the cause of the symptom from the generated symptom.