JPH0497427A - Program correction control system by computer - Google Patents

Abstract

PURPOSE:To improve the reliability of forecasting by providing this program correction control system with a rate of number of line calculating means, a rate history of number of line storing means, a rate of number of line plotting means, and a rate transition of number of line forecasting means. CONSTITUTION:The rate of number of line calculating means 1 calculates the rate of the number lines of a corrected file to the number of corrected lines and the rate history of number of line storing means 2 stores the correction history of the calculated rates of number of lines together with time information obtained at the time of executing correction. The rate of number of line plotting means 3 plots the rate of number of lines at the points of time specified by respective time information as plot output 6 in two-demensional coordinates formed by plotting time information on its X axis and plotting rate of number of lines on its Y axis. Then, the rate transition of number of line forecasting means 4 obtains a quadratic expression from the plotted points by least squares approximation and outputs a quadratic curve 7 for forecasting the transition of a future rate of number of line based upon the quadratic equation. Thus, the reliability of forecasting can be improved.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a program modification management method by a computer, and in particular, it stores the degree to which a program has been modified by a computer, and determines future changes based on the history of the degree of modification. This invention relates to a computer-based program modification management method that predicts the degree of modification.

[Conventional technology]

Conventionally, predictive management of this type of program modification has relied on the experience and intuition of administrators and engineers, and has not been quantified.

[Problem to be solved by the invention]

In the conventional program modification management method described above, since it is not quantified, it is necessary to determine how much modification will have to be made in the future, i.e., how complete the current program is, what is its quality, etc. Because the method relied on the experience and intuition of managers and engineers, the reliability of its predictions was extremely low.

An object of the present invention is to provide a computer-based program modification management method that can quantify the prediction of program completion and quality and improve the reliability of the prediction.

[Means to solve the problem]

The computer-based program modification management system of the present invention includes: (A) a line number ratio calculation means for calculating the ratio between the number of lines in the file immediately after i and the number of modified lines; (B) the line number ratio A line number ratio history storage means for storing the correction history together with time information at the time of correction; (C) a two-dimensional coordinate system in which the time information is plotted on the Y-axis and the line number ratio is plotted on the Y-axis; Line number ratio pro-soto means for plotting the line number ratio at the point in time indicated by each time information in coordinates; (D) converting the plot into a quadratic equation by least squares approximation, and changing the line number ratio in the future; The present invention is equipped with means for predicting line number ratio transition, which predicts line number ratio transition.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram of one embodiment of the present invention.

The computer-based program modification management system shown in FIG. The line number ratio history storage means 2 stores the time information together with the time information at the time when the time information is stored in two-dimensional coordinates, with the time information on the Y-axis and the line number ratio on the Y-axis. The line number ratio plotting means 3 plots the line number ratio at the indicated time point, and the line number ratio transition prediction means 4 converts the plot into a quadratic equation by least squares approximation to predict future changes in the line number ratio. There is.

Next, the operation will be explained.

FIG. 2 is an explanatory diagram showing the contents of the file of the computer-based program modification management method shown in FIG.
The figure shows a least squares approximation curve of the program correction line ratio drawn in a two-dimensional coordinate system with time on the Y axis and correction line ratio on the Y axis.

In Figure 2, the number of lines before correction shown on the left is 4, and during the correction work, r'BBBBJ in the second line was deleted, and two new lines were added between the second and third lines. row rX
'XXXJ and rYYYYJ are added, resulting in 5 lines as shown on the right.

First, when the above program correction information 5 is input to the line number ratio calculation means 1, the first line, the fourth line among the five lines
Since the 5th and 5th lines do not change, the corrected line ratio is calculated by line number ratio calculation means 1 as follows: 2 rows x 15 lines = 40%
It is calculated as follows. Then, the line number ratio history storage means 2 stores the correction history of the calculated line number ratio together with the time information at the time when the correction was made.

In FIG. 3, by the line number ratio plotting means 3,
A two-dimensional coordinate with the time information on the Y-axis and the line number ratio on the Y-axis, the line number ratio at the time indicated by each time information (number of days from the start of software development) plot points 101 to 1 as plot output 6
06 is plotted.

Next, regarding the plotted points 101 to 106, the line number ratio transition predicting means 4 converts the plotted points 101 to 106 into a quadratic equation by least squares approximation. A least squares approximation curve 107 of the program correction line ratio is output as a least squares approximation curve output of the program correction line ratio, which is a curve. Note that the approximation equation does not necessarily have to be a quadratic equation, and the more the pro-soto number of the corrected line ratio increases, the better the multidimensional equation becomes a better approximation.

Furthermore, the variance value can also be calculated from this quadratic equation and the deviation of each pro-soto.

In this way, regarding program correction work, the degree of correction is quantified by the value of the correction line ratio, and then the history of the correction line ratio is processed and sorted in two-dimensional coordinates, and as a result, the minimum By converting it into a quadratic equation using square approximation, predicting future modifications, and understanding the range of the prediction from the variance value of this quadratic equation, it is possible to quantify the prediction of program completion and quality. , the reliability of predictions can be improved. It is also possible to predict how much time it will take to complete the work.

〔Effect of the invention〕

As explained above, the present invention relates to program correction work, and quantifies the degree of correction based on the value of the correction line ratio, then plots the history of the correction line ratio in two-dimensional coordinates, As a result, we converted the results into quadratic equations using least squares approximation, and predicted future revisions and
By understanding the prediction range from the variance value of the following equation, it is possible to quantify the prediction of program completion and quality, which has the effect of improving the reliability of the prediction.

[Brief explanation of drawings]

FIG. 1 is a block diagram of one embodiment of the present invention, and FIG. 2 is a block diagram of an embodiment of the present invention.
Figure 3 is an explanatory diagram showing the contents of the file of the computer-based program modification management method shown in Figure 3. Figure 3 shows the program modification line ratio drawn in a two-dimensional coordinate system with time on the X axis and modification line ratio on the Y axis. FIG. 3 is a diagram showing a least squares approximate curve. 1...Line number ratio calculation means, 2...
Line number ratio history storage means, 3... Line number ratio plotting means, 4... Line number ratio transition prediction means, 5... Program modification information, 6...
... Plot output, 7 ... Line ratio minimum 2
Powered approximation curve output.

Claims (1)

[Claims] 1. (A) Line number ratio calculation means for calculating the ratio between the number of lines of the file after correction and the number of lines that have been corrected; (B) a correction history of the line number ratio; (C) A two-dimensional coordinate system that stores the time information along with the time information at the time when the correction is made; a line number ratio plotting means for plotting the line number ratio at a time point indicated by time information; (D) a line number ratio plotting means for converting the plot into a quadratic equation by least squares approximation to predict future changes in the line number ratio; A program modification management method using a computer, comprising: a transition prediction means. 2. The computer-based program modification management method according to claim 1, wherein the time information is a number of days from a program development start date.