JP2018185564A - Determination apparatus, determination method and determination program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To properly grasp an input item for which an input value allowed for a system is limited according to a situation of use.SOLUTION: An acquisition unit 15a acquires operation history information 14a including an input value to an input item on an operation screen. A calculation unit 15b aggregates input values of the acquired operation history information 14a for each of input items and calculates an index value using the number of types of the input value for each of the input items. A determination unit 15c determines that the input value allowed for the input item is limited when the calculated index value is equal to or less than a predetermined threshold value.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a determination device, a determination method, and a determination program.

  Generally, a GUI (Graphical User Interface) on an operation screen of the system is composed of various widgets, that is, components. The developer assumes how to use the system, selects an appropriate component, and implements the GUI. However, each component is not necessarily optimal for the system user from the beginning of mounting in its functional characteristics (see Non-Patent Document 1). For example, an input item whose allowable input value is limited to a standard text or the like (hereinafter referred to as a category value item) is preferably a selection formula such as a pull-down menu in order to prevent erroneous input. In some cases, it is a free entry item that allows text to be freely entered.

  However, it is difficult to grasp how it is appropriate to change the parts in accordance with the actual usage. Conventionally, problems such as GUI layout and design have been discovered by conducting usability tests (see Non-Patent Document 2). In general, usability, ie ease of use, is evaluated based on the user's subjectivity. For example, in a usability test, evaluation is performed based on behavioral data such as an operation order in which usability is reflected, page stay time, or line-of-sight movement, and a questionnaire to the user (see Non-Patent Document 3). In this usability test, a test subject performs a task, analyzes data, and discovers a problem based on an analysis result.

  Also, use data mining techniques to discover usability problems (see Non-Patent Documents 4 and 5), and use system operation history information to prevent erroneous input of information to the system. Thus, a technique for pointing out an error in the current input value of the user (see Non-Patent Document 6) has been proposed. In this technique, when each input item is a category value item, the current input value is compared with the input value of the past operation history information to determine whether it is correct or incorrect. Further, the relationship between the number of choices of category value items and usability has been pointed out (see Non-Patent Documents 7 and 8).

Kazuhiro Fukaya, Junko Shirogane, Yoshiaki Fukasawa, “Search Support for Source Code Changes with Widget Changes”, Proc. Of the 66th National Convention 2004.1, 2004, pp.253-254 Jakob Nielsen, “Usability Engineering”, Elsevier, 1994 Yuichiro Yashita, Hajime Iwata, Junko Shirogane, Yoshiaki Fukasawa, “Automatic Usability Evaluation Method Based on User Operations”, IEICE Technical Report. KBSE, January 2010, 109, 392, pp. 7-12 Mikio Kiura, “Webjig: Web Usability Evaluation Support System”, Computer Software, 2011, Vol.28 No.4, pp.11-16 Ibrahim M. Abu-Zaid, Alaa El-Halees, “Automatic Usability Evaluation on Educational Websites using Data Mining Methods”, 2013 Junya Maruyama, Shiro Ogasawara, Satoshi Inoue, “A method of detecting and correcting erroneous input to business systems based on operation examples”, IEICE Technical Report, 2016, ICM2016-37, pp.73-78 Taga Chinatsu, “Your choice, are you okay? What you want to be careful about when using pull-down menus in forms”, [online], 2014, UI improvement blog by f-tra, [March 15, 2017 search], Internet <URL: https: //f-tra.jp/blog/column/2960> Taga Chinatsu, “I want to keep it! IPhone and Android form standard UI summary”, [online], 2014, UI improvement blog by f-tra, [March 15, 2017 search], Internet <URL: https://f-tra.jp/blog/smartphone/1121>

  Conventionally, there has been a problem that it is difficult to appropriately grasp input items whose input values allowed for a system are limited according to the actual usage. For example, in a usability test, it is not easy to find a specific problem of GUI while a tester or a subject performs a task. Even if the data analysis techniques described in Non-Patent Documents 4 and 5 are used, it is not easy to interpret the analysis results and optimize the GUI. In addition, the usability test is costly and difficult to perform frequently.

  In addition, when the technique of Non-Patent Document 6 is applied to support user input, it is grasped based on the implementation whether each input item is a category value item or a free input item. However, as described above, since the implementation and the actual usage are not always the same, there is a possibility that an input item for which application of this technology is effective may be overlooked in the grasp based on the implementation.

  The present invention has been made in view of the above, and an object of the present invention is to appropriately grasp the input items for which the input values allowed for the system are limited according to the actual usage.

  In order to solve the above-described problems and achieve the object, a determination device according to the present invention includes an acquisition unit that acquires operation history information including an input value for an input item on an operation screen, and the acquired operation history information. When the input value is aggregated for each input item, and an index value is calculated using the number of types of the input value for each input item, and the calculated index value is equal to or less than a predetermined threshold value And a determination unit that determines that an input value allowed for the input item is limited.

  According to the present invention, it is possible to appropriately grasp input items whose input values allowed for the system are limited according to the actual usage.

FIG. 1 is an explanatory diagram for explaining a processing outline of a determination apparatus according to an embodiment of the present invention. FIG. 2 is a schematic view illustrating the schematic configuration of the determination apparatus according to this embodiment. FIG. 3 is an explanatory diagram for explaining the operation history information. FIG. 4 is an explanatory diagram for explaining the use of the determination result. FIG. 5 is an explanatory diagram for explaining the use of the determination result. FIG. 6 is an explanatory diagram for explaining the input support processing. FIG. 7 is an explanatory diagram for explaining the input support process. FIG. 8 is a flowchart showing the determination processing procedure of the present embodiment. FIG. 9 is a flowchart showing a threshold setting processing procedure. FIG. 10 is a diagram illustrating a computer that executes a determination program.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. Moreover, in description of drawing, the same code | symbol is attached | subjected and shown to the same part.

[Outline of judgment device]
First, with reference to FIG. 1, an outline of processing of the determination apparatus according to the present embodiment will be described. The determination device uses the operation history information including the history of input values for each input item 2 on the operation screen 1 of the target system illustrated in FIG. 1, and the input values allowed for each input item 2 are limited. It is determined whether or not. The determination device determines that the input item 2 for which the allowable input value is limited is a category value item, and determines that the input item 2 for which the input value is not limited is a free input item.

  In the example shown in FIG. 1, the service C that is one of the input items 2 is determined as a category value item because only two types of input values, selected and empty (blank), appear in the operation history information. Is done. On the other hand, the order number which is the other input item 2 is determined as a free input item because countless types of input values such as 12345, 23567, 73902, and 84561 appear in the operation history information.

  The determination result by the determination device is, for example, the optimization of the GUI of the operation screen such as a selection formula such as a pull-down menu for the input item 2 determined as the category value item, or the current result for the target system This is used for input support for determining the correctness of input values.

[Configuration of judgment device]
Next, a schematic configuration of the determination apparatus according to the present embodiment will be described with reference to FIG. As shown in FIG. 2, the determination apparatus 10 according to the present embodiment is realized by a general-purpose computer such as a workstation or a personal computer, and includes an input unit 11, an output unit 12, a communication control unit 13, a storage unit 14, and a control unit. 15.

  The input unit 11 is realized using an input device such as a keyboard or a mouse, and inputs various instruction information to the control unit 15 in response to an input operation by the operator. The output unit 12 is realized by a display device such as a liquid crystal display, a printing device such as a printer, an information communication device, and the like, and outputs a result of determination processing described later to the operator.

  The communication control unit 13 is realized by a NIC (Network Interface Card) or the like, and controls communication between an external device such as a target system and the control unit 15 via a telecommunication line such as a LAN (Local Area Network) or the Internet. .

  The storage unit 14 is realized by a semiconductor memory device such as a RAM (Random Access Memory) or a flash memory, or a storage device such as a hard disk or an optical disk. In the storage unit 14, a processing program for operating the determination apparatus 10, data used during execution of the processing program, and the like are stored in advance, or temporarily stored for each processing. The storage unit 14 may be configured to communicate with the control unit 15 via the communication control unit 13.

  In the present embodiment, the storage unit 14 stores operation history information 14a of the target system acquired in a determination process described later. The storage unit 14 stores a predetermined threshold value in advance.

  The operation history information 14a includes an input value for the input item 2 on the operation screen 1 of the target system. FIG. 3 is an explanatory diagram for explaining the operation history information 14a. As illustrated in FIG. 3, each record of the operation history information 14 a is configured by associating the input item 2 of the operation screen 1 with a numerical value for identifying the input value of each input item 2. FIG. 3 illustrates, for example, that the input value of the fourth (k = 4) input item 2 is “2” indicating that the construction type is abolished. Here, for example, for the construction type, a numerical value for identifying an input value is assigned in advance, such as “0” for a blank, “1” for a new construction, “2” for abolition, and the like.

  Note that the operation history information 14a used in the determination process described later is correct operation history information 14a in which correct input values are input to the input items 2. In addition, it is assumed that erroneous operation history information 14a in which an incorrect input value is input to some or all of the input items 2 used in input support processing described later is also stored in the storage unit 14 separately.

  Returning to the description of FIG. As illustrated in FIG. 2, the control unit 15 executes a processing program stored in a memory by an arithmetic processing device such as a CPU (Central Processing Unit), so that an acquisition unit 15 a, a calculation unit 15 b, a determination unit 15 c, and It functions as the support unit 15d. Note that these functional units may be implemented in hardware that is different or partially different.

  The acquisition unit 15a acquires operation history information including input values for input items on the operation screen. Specifically, the acquisition unit 15a receives a large amount of operation history information including an input value for the input item 2 on the operation screen 1 of this system from the system to be determined through the input unit 11 or the communication control unit 13. 14a is acquired and stored in the storage unit 14.

  The calculation unit 15b aggregates the input values of the acquired operation history information 14a for each input item 2, and calculates an index value using the number of types of input values for each input item 2. For example, the calculation unit 15b uses the number of types of input values of each input item 2 as an index value. In the example illustrated in FIG. 1, three types of input values appear for the person in charge who is one of the input items 2, Denden Taro, Denden Hanako, and Denden Jiro. In this case, the calculation unit 15b sets the index value to 3. In addition, when 40 types of input values such as service canceled and address change have appeared in the special note column which is another input item 2, the calculation unit 15b sets the index value to 40.

  Or the calculation part 15b may calculate the ratio of the number of the types of input value of each input item 2 with respect to the number of the acquired operation history information 14a as an index value. In the example shown in FIG. 1, three types of input values appear for the person in charge who is one of the input items 2. When the number of operation history information 14a is 100, the calculation unit 15b calculates 3/100 as an index value. Further, when 40 types of input values have appeared in the special note item column which is the other input item 2, the calculation unit 15b calculates 40/100 as the index value.

  The determination unit 15c determines that the input values allowed for the input item 2 are limited when the calculated index value is equal to or less than a predetermined threshold value. For example, when the calculation unit 15b uses the number of types of input values of each input item 2 of the operation history information 14a as an index value, if the threshold value is set to 3, the determination unit 15c determines the type of input value. The input item 2 having a number of 3 or less is determined as a category value item in which allowable input values are limited. In this case, the determination unit 15c determines that the input item 2 having more than three types of input values is a free input item. In the example illustrated in FIG. 1, for example, the person in charge who is one of the input items 2 is determined as a category value item. On the other hand, the special mention item field which is the other input item 2 is determined as a free input item.

  Further, when the calculation unit 15b calculates the ratio of the number of types of input values of each input item 2 with respect to the number of acquired operation history information 14a as an index value, if the threshold value is set to 0.1 The determination unit 15c determines that the input item 2 whose index value is 0.1 or less is a category value item. In this case, the determination unit 15c determines that the input item 2 whose index value is greater than 0.1 is a free input item. In the example shown in FIG. 1, as in the case where the number of types of input values of each input item 2 is used as an index value, for example, the person in charge as one of the input items 2 is determined as a category value item. . Also, the special note item column which is the other input item 2 is determined as a free input item.

  Here, it has been pointed out that usability is generally lowered when 20 or more options are used as pull-down menus (see Non-Patent Document 7). In particular, in small devices such as smartphones, it has been pointed out that when the number of options exceeds 4 or 5, usability is reduced because scrolling is required (see Non-Patent Document 8). Therefore, the threshold value is set in consideration of this.

  Further, the threshold value is set in consideration of the amount of processing that can be executed in the input support process by the support unit 15d described later, for example, according to the purpose of use of the determination result of the determination unit 15c. In this case, the threshold is set by determining whether or not the maximum value of the number of comparisons in the input support process can be executed from the viewpoint of time scale. In other words, this threshold value is the number of input items 2 determined as category value items for which the input values allowed for the input item 2 are limited by this threshold value, and the types of input values corresponding to this threshold value. It is set in consideration of the feasibility from the viewpoint of the time scale for the number of combinations with the maximum number.

  For example, the calculation unit 15b may change the operation history information 14a that is the target of the process of calculating the index value according to the purpose of use of the determination result by the determination unit 15c. 4 and 5 are explanatory diagrams for explaining the use of the determination result. For example, as illustrated in FIG. 4, when the purpose is to find an input item that is implemented as a free input item but has a limited type of input value as the actual usage, the calculation unit 15 b includes the storage unit 14. The index value is calculated using all the records of the operation history information 14a stored in. In the example shown in FIG. 4, the case where the service name which is one of the input items 2 is determined to be a category value item by the determination unit 15c is illustrated. In this case, in the target system, the GUI of the operation screen 1 can be dynamically changed to a pull-down menu using, for example, JavaScript (registered trademark).

  Further, as illustrated in FIG. 5, when determining whether or not the current input value is an input item whose type is limited as the actual usage state according to the input value input in advance, the calculation unit 15 b Calculates an index value by using a part of the records of the operation history information 14 a stored in the storage unit 14. In the example shown in FIG. 5, when a service name that is an input item being input is to be processed by the determination unit 15 c, the input value of the living area among the input items input earlier is “Δ △ prefecture □□ city”. "Is limited to the operation history information 14a. In this case, the calculation unit 15b calculates the index value only for the operation history information 14a in which the input value of the living area is “ΔΔ prefecture □□ city” among the plurality of input items, and the processing of the determination unit 15c set to target. Thereby, when using the determination result of the determination part 15c for the input assistance process mentioned later, the efficiency of a determination process improves. Also in this case, the target system can dynamically change the GUI of the operation screen 1 to a pull-down menu by using, for example, JavaScript. Further, in the example shown in FIG. 5, for the user whose living area is “△△ prefecture □□ city”, only “Service A” is presented as an option for the service name. User convenience is also improved.

  The support unit 15d executes an input support process for determining whether the current input value for the input item is correct or not, with respect to an input item determined to have a limited allowable input value. Here, the input support processing will be described with reference to FIGS. 6 and 7. As illustrated in FIG. 6, the input support process targets the input item 2 determined by the determination unit 15 c as a category value item. Then, the support unit 15d acquires the current input status for the operation screen 1 from the target system, and compares the input item 2 to be processed with the known correct operation history information 14a and the erroneous operation history information 14a. Determine whether the current input value is correct or incorrect. For example, the support unit 15d determines that the current input value is correct if the current input value matches the input value of the correct operation history information 14a. If the current input value matches the input value of the erroneous operation history information 14a, the current input value is determined to be incorrect.

  FIG. 7 is an explanatory diagram for specifically explaining the input support processing. As shown in FIG. 7, the support unit 15d first acquires the current input status from the target system via the input unit 11 or the communication control unit 13 in the same format as the operation history information 14a. And the support part 15d compares the combination of the input value about the input item to the input item last input by the user with the combination of the input value of the operation history information 14a. That is, the number of comparisons in this input support process corresponds to the number of combinations of the number of input items 2 to be compared and the number of types of input values of each input item 2 corresponding to this threshold value.

  In the example shown in FIG. 7, combinations of input values for two input items 2 up to the second input item 2 currently being input are compared. The support unit 15d determines that the current input value is incorrect when the combination of input values in the current input situation is not included in the correct operation history information 14a and is included in the erroneous operation history information 14a. Is determined. In other cases, the support unit 15d does not determine that the current input value is incorrect.

  Further, the support unit 15d specifies the input item 2 to be matched with the correct operation history information with the minimum number of corrections when the current input value is determined to be incorrect. As a result, the support unit 15d can accurately determine whether the input value is correct.

[Determination process]
Next, the determination process performed by the determination apparatus 10 will be described with reference to FIG. FIG. 8 is a flowchart illustrating the determination processing procedure. The flowchart in FIG. 8 is started, for example, at a timing when there is an operation input instructing the start of processing.

  First, the acquisition unit 15a receives a large amount of operation history information 14a including input values for the input item 2 on the operation screen 1 of this system from the system to be subjected to determination processing via the input unit 11 or the communication control unit 13. It is acquired and stored in the storage unit 14 (step S1).

  Next, the calculation unit 15b selects an arbitrary input item 2 (step S2), totals the input values of the acquired operation history information 14a for the input item 2, and uses the number of types of input values. A predetermined index value is calculated (step S3).

  The determination unit 15c checks whether or not the calculated index value exceeds a predetermined threshold (step S4). When the index value exceeds the threshold value (step S4, Yes), the determination unit 15c determines that the input item 2 is a free input item (step S5). On the other hand, when the index value is equal to or smaller than the threshold value (step S4, No), the determination unit 15c determines that the input item 2 is a category value item (step S6).

  Next, it is confirmed whether the calculation part 15b has selected all the input items 2 of the operation screen 1 (step S7). When all the input items 2 have not been selected (No at Step S7), the calculation unit 15b returns to the process at Step S2. On the other hand, when all the input items 2 are selected (step S7, Yes), the calculation unit 15b ends a series of determination processes.

  As described above, in the determination device 10 of the present embodiment, the acquisition unit 15a acquires the operation history information 14a including the input value for the input item 2 on the operation screen 1. Further, the calculation unit 15b aggregates the input values of the acquired operation history information 14a for each input item 2, and calculates an index value using the number of types of input values for each input item 2. In addition, when the calculated index value is equal to or less than a predetermined threshold, the determination unit 15c determines that the input value allowed for the input item is limited.

  Thereby, it is possible to appropriately grasp category value items for which the input values allowed for the system are limited according to the actual usage. Therefore, it is possible to optimize the GUI such that the category value item is a selection formula such as a pull-down menu. In addition, it is possible to effectively perform input support for determining the correctness of the input value.

  In the determination apparatus 10 of the present embodiment, the support unit 15d targets the input item 2 determined as the category value item for which the allowable input value is limited, and the current input value for the input item 2 An input support process for determining whether or not is correct is executed. Thereby, it is possible to determine whether the current input value of the user is correct or not with high accuracy and high efficiency.

  The threshold used by the determination unit 15c is set in consideration of the executable processing amount according to the purpose of use of the determination result of the determination unit 15c. When the determination result is used in the input support process by the support unit 15d, the threshold used by the determination unit 15c is set by determining whether or not the maximum value of the number of comparisons in the input support process can be executed from the viewpoint of time scale. Is done. That is, this threshold value is the number of input items 2 determined as category value items for which the input values allowed for the input item 2 are limited by this threshold value, and the number of types of input values corresponding to this threshold value. It is set in consideration of the feasibility from the viewpoint of the time scale for the number of combinations with the maximum value of.

  With reference to FIG. 9, the threshold value setting process for setting the threshold value as described above will be described. FIG. 9 is a flowchart showing a threshold setting processing procedure. The flowchart in FIG. 9 is started, for example, at the timing when there is an operation input instructing the start of processing.

  First, the control unit 15 sets x as a threshold value (step S11), and calculates the number y of input items 2 determined as a category value item by the threshold value x (step S12).

  Next, the control unit 15 uses x and y to calculate the maximum number of comparisons in the input support process (step S13). That is, the control unit 15 calculates the number of combinations of the number y of input items 2 determined as a category item by the threshold value x and the maximum number of types of input values corresponding to the threshold value x. Here, the maximum value of the number of types of input values corresponding to the threshold value x is, for example, x when the index value determined by the threshold value x is the number of types of input values of each input item 2. It becomes. When the index value is the ratio of the number of types of input values of each input item 2 to the number N of operation history information 14a, the maximum number of types of input values corresponding to the threshold value x is x × N. It becomes.

  The control unit 15 checks whether or not the maximum value of the calculated number of comparisons can be executed on a time scale according to the purpose (step S14). When it is not executable (step S14, No), the control unit 15 decreases the threshold value x (step S15) and returns the process to step S11.

  On the other hand, if it can be executed (step S14, Yes), the control unit 15 checks whether or not more input values and input items 2 are targeted (step S16). When the number of targets is increased (step S16, Yes), the control unit 15 increases the threshold value x (step S17) and returns the process to step S11. On the other hand, when the number of objects is not increased (No at Step S16), the control unit 15 ends the series of threshold setting processes. Thereby, the determination apparatus 10 can set the threshold value used for the determination process appropriately, and can efficiently perform the input support process.

[program]
It is also possible to create a program that describes the processing executed by the determination apparatus 10 according to the above embodiment in a language that can be executed by a computer. As one embodiment, the determination apparatus 10 can be implemented by installing a determination program for executing the determination process as package software or online software on a desired computer. For example, the information processing apparatus can function as the determination apparatus 10 by causing the information processing apparatus to execute the above determination program. The information processing apparatus referred to here includes a desktop or notebook personal computer. In addition, the information processing apparatus includes mobile communication terminals such as smart phones, mobile phones and PHS (Personal Handyphone System), and slate terminals such as PDA (Personal Digital Assistants). Further, the terminal device used by the user can be used as a client, and the client can be implemented as a server device that provides the client with services related to the above determination processing. For example, the determination device 10 is implemented as a server device that provides a determination processing service that receives operation history information as input and outputs a determination result as to whether or not it is a category value item. In this case, the determination apparatus 10 may be implemented as a Web server, or may be implemented as a cloud that provides a service related to the above-described determination processing by outsourcing. Below, an example of the computer which performs the determination program which implement | achieves the function similar to the determination apparatus 10 is demonstrated.

  As shown in FIG. 10, a computer 1000 that executes a determination program includes, for example, a memory 1010, a CPU 1020, a hard disk drive interface 1030, a disk drive interface 1040, a serial port interface 1050, a video adapter 1060, and a network interface. 1070. These units are connected by a bus 1080.

  The memory 1010 includes a ROM (Read Only Memory) 1011 and a RAM 1012. The ROM 1011 stores a boot program such as BIOS (Basic Input Output System). The hard disk drive interface 1030 is connected to the hard disk drive 1031. The disk drive interface 1040 is connected to the disk drive 1041. For example, a removable storage medium such as a magnetic disk or an optical disk is inserted into the disk drive 1041. For example, a mouse 1051 and a keyboard 1052 are connected to the serial port interface 1050. For example, a display 1061 is connected to the video adapter 1060.

  Here, as shown in FIG. 10, the hard disk drive 1031 stores, for example, an OS 1091, an application program 1092, a program module 1093, and program data 1094. Each table described in the above embodiment is stored in the hard disk drive 1031 or the memory 1010, for example.

  Further, the determination program is stored in the hard disk drive 1031 as a program module 1093 in which a command executed by the computer 1000 is described, for example. Specifically, a program module 1093 describing each process executed by the determination apparatus 10 described in the above embodiment is stored in the hard disk drive 1031.

  Further, data used for information processing by the determination program is stored in the hard disk drive 1031 as the program data 1094, for example. Then, the CPU 1020 reads the program module 1093 and the program data 1094 stored in the hard disk drive 1031 to the RAM 1012 as necessary, and executes the above-described procedures.

  Note that the program module 1093 and the program data 1094 related to the determination program are not limited to being stored in the hard disk drive 1031, but are stored in, for example, a removable storage medium and read by the CPU 1020 via the disk drive 1041 or the like. May be. Alternatively, the program module 1093 and the program data 1094 related to the determination program are stored in another computer connected via a network such as a LAN or a WAN (Wide Area Network) and read by the CPU 1020 via the network interface 1070. May be.

  As mentioned above, although embodiment which applied the invention made | formed by this inventor was described, this invention is not limited with the description and drawing which make a part of indication of this invention by this embodiment. That is, other embodiments, examples, operational techniques, and the like made by those skilled in the art based on this embodiment are all included in the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Operation screen 2 Input item 10 Determination apparatus 11 Input part 12 Output part 13 Communication control part 14 Storage part 14a Operation history information 15 Control part 15a Acquisition part 15b Calculation part 15c Determination part 15d Support part

Claims (7)

An acquisition unit for acquiring operation history information including input values for input items on the operation screen;
A calculation unit that aggregates the input values of the acquired operation history information for each input item and calculates an index value using the number of types of the input values for each input item;
A determination unit that determines that an input value allowed for the input item is limited when the calculated index value is equal to or less than a predetermined threshold;
A determination apparatus comprising:   The determination device according to claim 1, wherein the calculation unit uses the number of types of the input values as the index value.   The determination device according to claim 1, wherein the calculation unit calculates a ratio of the number of types of the input values to the number of the acquired operation history information as the index value.   Furthermore, it comprises the support part which determines the correctness of the present input value with respect to the said input item for the said input item determined that the allowable input value is limited. The determination apparatus according to any one of the above.   The threshold value is the number of input items that are determined to be limited to the input value allowed for the input item by the threshold value, and the maximum value of the number of types of the input values corresponding to the threshold value. The determination apparatus according to claim 4, wherein the determination apparatus is set in consideration of feasibility from the viewpoint of a time scale with respect to the number of combinations. A determination method executed by a determination device,
An acquisition process for acquiring operation history information including input values for input items on the operation screen;
A calculation step of counting the input values of the acquired operation history information for each input item, and calculating an index value using the number of types of the input values for each input item;
A determination step of determining that an input value allowed for the input item is limited when the calculated index value is equal to or less than a predetermined threshold;
The determination method characterized by including. An acquisition step for acquiring operation history information including input values for input items on the operation screen;
A calculation step of counting the input values of the acquired operation history information for each input item, and calculating an index value using the number of types of the input values for each input item;
A determination step of determining that an input value allowed for the input item is limited when the calculated index value is equal to or less than a predetermined threshold;
The determination program characterized by causing a computer to execute.

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