Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

A method to identify the defect trend within a product life-cycle

IP.com Disclosure Number: IPCOM000016422D
Original Publication Date: 2002-Dec-19
Included in the Prior Art Database: 2003-Jun-21
Document File: 2 page(s) / 68K

Publishing Venue

IBM

Abstract

The objective of this chapter is to provide input on how to predict the number of defects a product could have after the launch on the field.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 96% of the total text.

Page 1 of 2

A method to identify the defect trend within a product life-cycle

The objective of this chapter is to provide input on how to predict the number of defects a product could have after the launch on the field. In fact fixing the defects (called APAR) once a Customer is using the product, is part of expenses of a development project and therefore impact the net income of the project itself.

    A lot of technologies are already common and widely used to predict the number of defects during the development of a product. Mainly, the technologies are based on the number of line of codes, skill of developers, time to develop.

    These factors could be also used to predict APARs after the pure development cycle has been completed. Nevertheless another factor needs to be added. This factor is the number of customers will use the product.

    This is not obvious since the concept of a defect is related to the product quality: if the product has a defect is intrinsic to the product, if or if not a customer will use it. Anyway, the cost of maintenance will depend on if or if not a Customer will use the product. In fact, if no Customer will use the product, none will open APARs and as a consequence none will claim for poor quality.

Number of customer breakdown

350

300

250

200

150

100

50

0

12M 9M 6M 3M

APAR Rate by Release - Core Applications

45

02001/09 2001/102001/112001/12 2002/012002/022002/03 2002/042002/052002/06 2002/072002/08

40

35

30

25

20

15

10

5

4.1

4.0

Previous

1

[This page c...