JP5130935B2 - Cost estimation parameter optimization method, cost simulation apparatus and program - Google Patents

Description

  In the cost simulation apparatus, the present invention automatically selects a cost factor, autonomously optimizes a condition parameter that affects the cost cost, and minimizes selection of conditions necessary for narrowing down the cost. About.

  There have been systems for cost review. When there are a plurality of parts that achieve the purpose and the costs differ greatly, it is necessary to add a selection condition parameter to narrow down the costs with higher accuracy.

As a related technique, a technique for quickly and accurately estimating the manufacturing cost of a product has been proposed. The manufacturing cost estimation system has a parts information database in which parts manufactured in the past are registered and data relating to the registered parts is stored. The parts information database includes manufacturing process data that affects manufacturing costs. A registered part similar to a product part is selected from the part information database constructed in this way. Then, based on the manufacturing cost of the registered part similar to the product, the manufacturing cost of the product part is calculated, the manufacturing cost of all the product parts is calculated, and the manufacturing cost of the product is estimated. The manufacturing process data of the registered part is referred to when the manufacturing cost of the product part is calculated. (For example, refer to Patent Document 1).
JP 2002-182732 A

  If the selection condition parameter is added, the estimation accuracy is increased accordingly. However, in order to determine the optimum input condition, the labor for investigation and selection input is increased accordingly, and it has not become a system that anyone can use easily.

  In addition, the specification conditions that affect the cost and the database that stores the cost are updated daily, and the selection condition parameters set when the system was developed are not always optimal, and system improvements are required. There was a problem.

  The present invention has been made to solve the above-described problems, and can estimate the cost without modifying the system regardless of how complicated the cost data added every day is. An object is to provide a parameter optimization method, a cost simulation apparatus, and a program.

A first cost estimation parameter optimization method of the present invention is a cost estimation parameter optimization method in a cost simulation apparatus having a condition generation mechanism for generating a specification condition parameter for narrowing down the cost, and is generated from a database by the condition generation mechanism. Search for parts with similar costs and similar specifications, determine the factor of which specification condition of the part is a price fluctuation factor, specify the weight according to the determination, and based on the weight of the specified factor The price difference is weighted and distributed to each factor, and the weighted and distributed factor is registered as a specification condition parameter.

Further, the second cost estimation parameter optimization method of the present invention has a condition generation mechanism for generating specification condition parameters for narrowing down the cost, and the cost estimation parameter optimization in the cost simulation apparatus for obtaining the cost by specifying a plurality of input conditions. a method, by the condition generation mechanism, to eject the similar cost from the cost database, to determine whether the price change in any specification conditions similar cost occurs, and it is determined specification conditions with the price fluctuations register the difference price, the price and large descending sort of specification conditions change, cut the predetermined lower threshold value specification condition, thereby, the generated specification condition parameter, stored in the condition parameter threshold database upon the registration of the cost database of multiple specification conditions attached to it and a plurality of cost And Riga, and generates a new specification condition parameters.

The first cost simulation apparatus of the present invention is a cost simulation apparatus having a condition generation mechanism for generating a specification condition parameter for narrowing down the cost, the means for searching for parts with similar costs and similar specifications from a database, Judgment is made on the factor of which specification condition of the part is a variable factor of the price, and the weight according to the judgment is specified, and the price difference is weighted and distributed to each factor based on the weight of the specified factor. And means for registering the weighted factor as the specification condition parameter.

The second cost simulation apparatus of the present invention is a cost simulation apparatus that has a condition generation mechanism for generating specification condition parameters for narrowing down the cost, obtains the cost by specifying a plurality of input conditions, and is similar to the cost database. Similar cost search means for extracting the cost, factor instruction means for determining which specification condition of the similar cost causes the price fluctuation, and difference price registration means for registering the difference price between the determined specification condition and the price fluctuation When the condition sorting means for descending sort from a larger specification conditions of the price fluctuations, and simplified means for cutting the lower specification condition than a predetermined threshold value, said condition generation mechanism having, the generated specification condition parameters , a condition parameter threshold database storing a plurality of cost and multiple specifications associated therewith To register with the matter of cost database as a trigger, and generates a new specification condition parameters.

Further, the first program of the present invention includes a cost simulation apparatus having a condition generation mechanism for generating a specification condition parameter for narrowing down the cost, a process for searching for parts with similar costs and similar specifications from a database, and which specification of the parts condition is determined whether a factor has a fluctuation component of the price, the process of designating the weights according to the determination, weighted allocation differences prices each factor based on the weight of the specified factor, weighted allocation A process of registering the factor as the specification condition parameter is executed.

In addition, the second program of the present invention has a condition generation mechanism for generating specification condition parameters for narrowing down the cost, and is similar to extracting a similar cost from a cost database to a cost simulation apparatus for obtaining a cost by specifying a plurality of input conditions. and cost the search process, and the factor instruction process to determine whether the price change occurs in any specification conditions of the similar cost, and the difference in price registration process of registering the difference price and the price fluctuations and is determined specification conditions, the price Condition sorting processing for sorting in descending order from specification conditions with large fluctuations, simplification processing for cutting specification conditions lower than a predetermined threshold, processing for storing the generated specification condition parameters in the condition parameter / threshold database, Triggering the registration of multiple costs and the accompanying multiple specification conditions in the cost database Characterized in that to execute a process of generating have specification condition parameters.

  According to the present invention, the cost can be obtained without modifying the system, regardless of how complicated the cost data added every day is.

Hereinafter, a configuration of an embodiment of the present invention will be described in detail with reference to the drawings.
Referring to FIG. 1, the condition generation mechanism 2 incorporated in the cost simulation apparatus 1 for obtaining a cost by specifying a plurality of input conditions in the first embodiment of the present invention is similar to the similar cost search unit 11. The factor instruction unit 12, the condition parameter registration unit 13, the condition parameter sort unit 14, and the simplification unit 15.

  The condition selection mechanism 3 includes a condition parameter display means 21 and a user instruction condition determination means 22.

  These mechanisms 2 and 3 have access means to the cost database 4 and the condition parameter / threshold value database 5.

Each of these means generally operates as follows.
The cost database 4 stores a plurality of costs and a plurality of specification conditions associated therewith.

  The condition parameter / threshold database 5 stores condition parameters / threshold values.

  The similar cost search means 11 extracts a similar cost 7 similar to the newly registered new cost / specification condition 6 from the cost database 4.

  The factor instructing means 12 determines under which specification conditions the price fluctuation occurs in the new cost / specification condition 6 and the similar cost 7.

  The condition parameter registration unit 13 registers the condition parameter determined by the factor instruction unit 12 and the price difference price difference in the database 5.

  The condition parameter sorting means 14 sorts the condition parameters in the database 5 in descending order from the specification conditions with large price fluctuations.

  The simplification means 15 cuts condition parameters lower than the threshold value of the database 5.

  The condition parameter display means 21 takes out the condition parameters of the database 5 and obtains a user response of a Web page such as a pull-down menu.

  The user instruction condition determination unit 22 searches the cost database 4 based on the parameter selected by the user by the condition parameter display unit 21 and presents the optimum cost.

  Next, the operation of the present embodiment will be described in detail with reference to FIGS. 1 and 2 to 7.

  First, it is assumed that a part with the name aa has already been registered in the cost database 4 of FIG. 2 and that the cost information provider has added a part with the name bb this time. The part data with the name bb is the new cost / specification condition 6.

  Next, when registered in the cost database 4, the condition generation mechanism 2 is called.

  First, the cost data that is most similar to the new cost / specification condition 6 by the similar cost search means 11, that is, data that has the smallest difference between the values in the column of the cost database 4 is determined as aa.

  Next, the factor instructing unit 12 takes out a row having a difference between the parts aa and bb. In the example of FIG. 2, there are two cost factors, “implementation form” and “current”, and weights of the plurality of factors are designated. As an example, first, a difference of 10 yen between the prices of the parts aa and bb is equally divided into all factors.

  As a result, as shown in FIG. 3, a condition parameter in which a weight of 5 yen is assigned to each of “implementation form” and “current” is generated and stored in the condition parameter / threshold database 5 by the condition parameter registration unit 13.

  Next, although the condition parameter sorting means 14 is called, since there is no difference in the case of FIG. 3, no sorting is performed.

  Finally, the simplification means 15 is called, and the cost factor below the threshold value stored in advance in the condition parameter / threshold value database 5 is deleted.

  Various expressions can be considered for the threshold, but this time, “up to two items in the order of weight” are assumed.

  In FIG. 3, since there are only two items, truncation does not occur.

  The condition parameters generated by the condition generation mechanism 2 are presented as shown in the screen of FIG. 4 by the condition selection mechanism 3 presented to the user.

  Next, it is assumed that a part with the name cc is newly added to the cost database 4 in FIG.

  The cost data most similar to the new cost / specification condition 6 of the name cc, that is, the data with the smallest difference between the values in the column of the cost database 4 is determined as bb by the similar cost search means 11.

  Next, the factor instructing unit 12 takes out a row having a difference between the parts bb and cc. In the example of FIG. 5, the cost factor has one item of “current”, so the weight of this factor is designated. As an example, the difference of 5 yen between the prices of the parts bb and cc is added to the “current”.

  As a result, as shown in FIG. 6, the weight of “current” is 10 yen, and is stored in the condition parameter / threshold value database 5 by the condition parameter registration unit 13.

  Next, the condition parameter sorting unit 14 is called, and the descending sort is performed in the order of “current” and “mounting form” as shown in FIG.

  Finally, the simplification means 15 is called and the cost factor lower than the threshold value stored in the condition parameter / threshold value database 5 in advance is deleted. However, since there are only two items this time, truncation does not occur.

  The condition parameters generated by the condition generation mechanism 2 are presented as shown in the screen of FIG. 7 by the condition selection mechanism 3 presented to the user.

  Next, in FIG. 8, it is assumed that a part named dd is newly added to the cost database 4.

  The cost data that is most similar to the new cost / specification condition 6 of the name dd by the similar cost search means 11, that is, data that has the smallest difference between the values in the column of the cost database 4 is determined as cc.

  Next, the factor instructing unit 12 takes out a row having a difference between the parts cc and dd. In the example of FIG. 8, the cost factor has one item of “lead length”, so the weight of this factor is designated. As an example, a difference of 10 yen between the prices of the parts cc and dd is added to the “lead length”.

  As a result, as shown in FIG. 9, the weight of the “lead length” is 10 yen, and is stored in the condition parameter / threshold database 5 by the condition parameter registration unit 13.

  Next, the condition parameter sorting unit 14 is called, and the descending sort is performed in the order of “lead length”, “current”, and “mounting form” as shown in FIG.

  Finally, the simplification means 15 is called, and the cost factor “implementation form” below the threshold value stored in advance in the condition parameter / threshold value database 5 is deleted.

  The condition parameters generated by the condition generation mechanism 2 are presented as shown in the screen of FIG. 10 by the condition selection mechanism 3 presented to the user.

  Therefore, as shown in the three screens of FIGS. 3, 7, and 10, since the options are automatically optimized, the number of input steps can be reduced.

  In the last FIG. 10, the cost cost is obtained only with the two selection condition parameters of “lead length” and “current”. However, when the lead length of 3.3 mm is specified and the current of 1.5 is selected, it is automatically performed. When the component aa whose mounting form is “DIP” is obtained, the lead length of 3.3 mm is designated, and the current 2.0 is selected, the component aa whose mounting form is “PF” is automatically obtained, It is clear that even if there is no choice of “”, the influence on the narrowing accuracy can be minimized.

  According to the above-described embodiment, the cost can be obtained without modifying the system regardless of how complicated the cost data added daily is. The reason is that, in a condition generation mechanism for generating specification condition parameters for narrowing down costs, a similar cost search means for extracting similar costs from a cost database, and a factor instruction means for instructing which specification conditions of these costs cause price fluctuations This is because the cost factor is automatically selected by the condition parameter registration means for registering the difference price.

  In addition, the cost can be examined more easily than the conventional cost simulation. The reason is that the condition generation mechanism for generating the specification condition parameters for narrowing down the cost has condition parameter sorting means for sorting in descending order from the specification conditions with large price fluctuations, and simplification means for cutting the specification conditions lower than the threshold. .

  Each of the above-described embodiments is a preferred embodiment of the present invention, and various modifications can be made without departing from the scope of the present invention. For example, a process for realizing the function of the cost simulation apparatus may be performed by causing the cost simulation apparatus to read and execute a program for realizing the function of the cost simulation apparatus. Further, the program is transmitted to another computer system by a transmission wave via a computer-readable recording medium such as a CD-ROM or a magneto-optical disk, or via a transmission medium such as the Internet or a telephone line. Also good. Further, a mode in which functions are distributed by an additional device is also within the scope of the present invention. In other words, the present invention can be applied to uses such as a program for realizing on a computer a device that performs cost simulation and cost estimation.

It is a figure which shows the apparatus structure which concerns on embodiment of this invention. It is a figure which shows the structure of a cost database. It is a figure which shows a condition parameter. It is a figure which shows the screen of a condition selection mechanism. It is a figure which shows the structure of the cost database after an addition. It is a figure which shows the condition parameter after addition. It is a figure which shows the screen of the condition selection mechanism after an addition. It is a figure which shows the structure of the cost database after further adding. Furthermore, it is a figure which shows the condition parameter after addition. Furthermore, it is a figure which shows the screen of the condition selection mechanism after addition.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cost simulation apparatus 2 Condition generation mechanism 3 Condition selection mechanism 4 Cost database 5 Condition parameter / threshold database 6 New cost / specification condition 7 Similar cost 11 Similar cost search means 12 Factor instruction means 13 Condition parameter registration means 14 Condition parameter sort means 15 Simplification means 21 Condition parameter display means 22 User instruction condition determination means

Claims (6)

A cost estimation parameter optimization method in a cost simulation apparatus having a condition generation mechanism for generating specification condition parameters for narrowing down costs,
By the condition generation mechanism,
Find the parts of similar cost and similar specifications from the database,
Determining the factor of which specification conditions of the parts are price fluctuation factors , specifying the weight according to the determination ,
A cost estimation parameter optimization method characterized by weighting and distributing a price difference to each factor based on a weight of a specified factor, and registering the weighted factor as a specification condition parameter. A cost estimation parameter optimization method in a cost simulation apparatus that has a condition generation mechanism for generating a specification condition parameter for narrowing down a cost and obtains a cost by specifying a plurality of input conditions,
By the condition generation mechanism,
De take a similar cost from the cost database,
To determine whether the price change occurs in any specification conditions of the similar cost,
Sign the determined specification conditions and the difference between the price of the price fluctuations,
To sort in descending order from a large specification conditions of the price fluctuations,
Cut the lower specification conditions than a pre-determined threshold,
Thus, the generated specification condition parameters, when stored in conditions parameter threshold database, and the registration of the plurality of costs and cost database plurality specification conditions associated therewith a trigger, generating a new specification condition parameters Cost estimation parameter optimization method characterized by A cost simulation device having a condition generation mechanism for generating specification condition parameters for narrowing down costs,
Means for searching for parts with similar costs and similar specifications from the database;
Means for determining a factor of which specification condition of the part is a price fluctuation factor, and designating a weight according to the determination ;
Means for weighting and distributing the price difference to each factor based on the weight of the designated factor, and registering the weighted and distributed factor as the specification condition parameter;
A cost simulation apparatus comprising: A cost simulation device that has a condition generation mechanism for generating specification condition parameters for narrowing down the cost, and obtains a cost by specifying a plurality of input conditions,
Similar cost retrieval means for retrieving similar costs from the cost database,
Factor indicating means for determining which specification condition of the similar cost causes price fluctuation;
A difference price registration means for registering a difference price between the determined specification condition and the price fluctuation ;
And conditions sorting means to sort in descending order from a large specification conditions of the price fluctuations,
The condition generation mechanism having simplification means for cutting a specification condition lower than a predetermined threshold;
The generated specification condition parameters, a condition parameter threshold database to store,
A cost simulation apparatus characterized by generating a new specification condition parameter triggered by registration of a plurality of costs and accompanying multiple specification conditions in a cost database. In a cost simulation device with a condition generation mechanism that generates specification condition parameters to narrow down the cost,
Search for parts with similar costs and similar specifications from the database;
A process of determining a factor of which specification condition of the part is a price fluctuation factor, and designating a weight according to the determination ;
A program characterized in that a price difference is weighted and distributed to each factor based on a weight of a designated factor, and a process of registering the weighted and distributed factor as the specification condition parameter is executed. A cost simulation device that has a condition generation mechanism that generates specification condition parameters for narrowing down costs and obtains costs by specifying multiple input conditions.
Similar cost search processing to retrieve similar costs from the cost database,
Factor instruction processing for determining at which specification conditions of the similar cost price fluctuation occurs;
A difference price registration process for registering a difference price between the determined specification condition and the price fluctuation ;
And conditions sorting process to sort in descending order from a large specification conditions of the price fluctuations,
A simplification process for cutting a specification condition lower than a predetermined threshold;
A process for storing the generated specification condition parameter in the condition parameter / threshold database;
And registration with the plurality of costs and cost database plurality specification conditions associated therewith a trigger, the program for causing to execute a process of generating a new specification condition parameters.

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