1. Selection of OSS components yvind Hauge [email_address] Based on Challenges of the Open Source Component Marketplace in the Industry Claudia Ayala, yvind Hauge, Reidar Conradi, Xavier Franch,Jingyue Li, and Ketil Sandanger Velle

2. Problem

Constraints

• Little time 3. Many functional requirements 4. High non-functional requirements

Development

• Time consuming 5. Easy to make mistakes 6. Expensive

7. Component BasedSoftware Engineering 8. 9. 10. 11. What would you do to find and evaluate a component? 12. Research on selection

Focus

• Formalization 13. Completeness 14. Correctness

Result

• Formalized selection methods 15. Checklists, evaluation criteria, andweightedevaluation matrices 16. Quality models 17. Taxonomies and classification

18. 19. Problems and benefits with these approaches? 20. Problems/benefits

Problems

• A few constraints are often very important 21. Few candidate components 22. Requirements are changing 23. Time consuming to evaluate criteria

Benefits

• Might find a better component 24. Might evaluate more criteria 25. Reproducible 26. Documented

27. Practice : Identification

Preemptive

• Personal experience 28. Experience within social network 29. Monitoring OSS communities

Reactive

• Google 30. Search on sites, in blogs etc.

31. Practice : Evaluation

Personal experience 32. Experience within social network 33. Web-experience 34. Prototyping

35. Problems and benefits with these approaches? 36. Process

Problems

• Do not know if you have the best component 37. Bias/developer dependent 38. Not predictable, hard to reproduce 39. Often not a documented decision

Benefits

• Less time spent 40. Benefit from previous experience 41. More often familiar technology 42. Reduce the number of adopted technologies

43. Internet Resources

Problems

• Information
  • Lack of 44. Too much of 45. Unreliable 46. From a different context
• Resources
  • Lack functionality/features 47. Hard to navigate

Benefits

• What would you do without them?

48. Implications

Spend (some) time

• monitoring the domain you are working in 49. getting to know the available resources

Share your experience with others 50. Consider looking for other tools than your hammer