Keyphrases
- software maintenance
- software systems
- maintenance activities
- software development and maintenance
- open source projects
- software engineers
- reverse engineering
- program comprehension
- software evolution
- effort estimation
- regression testing
- software life cycle
- source code
- software development
- software projects
- software engineering
- object oriented systems
- software development life cycle
- program understanding
- manufacturing systems
- maintenance effort
- quality control
- cooperative
- machine learning
- database