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Mining Software History to Improve Software Maintenance Quality. Presenter : Li Shu-Ya Authors : Alexander Tarvo , Microsoft. Software, 2009 . Outline. Motivation Objective Methodology Experiments and Results Conclusion Comments. 我最會 Debug 了 ( 叫我 king..). Motivation. - PowerPoint PPT Presentation
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Intelligent Database Systems Lab
國立雲林科技大學National Yunlin University of Science and Technology
Mining Software History to Improve Software Maintenance Quality
Presenter : Li Shu-YaAuthors : Alexander Tarvo, Microsoft
Software, 2009
Intelligent Database Systems Lab
N.Y.U.S.T.
I. M.
2
Outline
Motivation Objective Methodology Experiments and Results Conclusion Comments
Intelligent Database Systems Lab
N.Y.U.S.T.
I. M.Motivation
3
Bug? UpdateBug? Update
Bug? UpateBug? UpdateBug? UpdateBug? Update
Bug? UpdateBug? Update
Alex
專長:把 bug 越 De 越多…專長: Debug
Oh! SoftwareRegressions?!
I must improve it!
A story in Micosoft …
King of Garbage
我最會 Debug 了(叫我 king..)
King of Destruction
我是破壞王(我也是 king..怎樣~)
Intelligent Database Systems Lab
N.Y.U.S.T.
I. M.Objectives
The best method to avoid regressions’ consequences extensive testing of all fixes.
Need a tool or a method that can predict the amount of risk for each fix.
4
Intelligent Database Systems Lab
N.Y.U.S.T.
I. M.Methodology – System Overview
5
Binary Change Tracer (BCT)
Intelligent Database Systems Lab
N.Y.U.S.T.
I. M.Binary Change Tracer (BCT)
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1. Dividing the binary into components.2. Extracting the history of code changes
3. Associating code changes with bugs. 4. Storing the extracted data
Bug trackingdatabases
(BTDs)
Check-in IDs in VCS
Relate
BCT
Bugscheck-insDevelopersBinariessource filesfunctions
code complexityCouplingOO metrics
MaX
Intelligent Database Systems Lab
N.Y.U.S.T.
I. M.Experiments
7
the best indicators of regression risksource files affected by the fixAll functions changea new functionality
Intelligent Database Systems Lab
N.Y.U.S.T.
I. M.Conclusion
This model is useful for risk prediction.
82009 年 Micosoft 最佳員工獎
還好有這個系統讓我沒有被裁員
Intelligent Database Systems Lab
N.Y.U.S.T.
I. M.Comments
Advantage It really improve software maintenance quality
Drawback …
Application Software Maintenance
9