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P10

Time spent (min). 10. 20. 0. 10. 20. 0. P1. F. F. D. B. B. B. B. D. A. B. B. B. D. D. D. D. E. C. C. D. B. D. E. F. D. B. C. C. A. A. A. E. C. C. B. B. A. D. F. F. C. C. F. D. A. E. B. A. A. E. C. F. F. A. E. A. E. B. C. C. A. F.

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P10

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  1. Time spent (min) 10 20 0 10 20 0 P1 F F D B B B B D A B B B D D D D E C C D B D E F D B C C A A A E C C B B A D F F C C F D A E B A A E C F F A E A E B C C A F D F A F F A C E P2 P3 P4 P5 E F E P6 E P7 E P8 C P9 E P10 P11 E P12 B D F D C A avg

  2. Time spent (min) 10 20 0 10 20 0 P1 F F D B B B B D A B B B D D D D E C C D B D E F D B C C A A A E C C B B A D F F C C F D A E B A A E C F F A E A E B C C A F D F A F F A C E P2 P3 P4 P5 E F E P6 E P7 E P8 C P9 E P10 P11 E P12 B D F D C A avg

  3. Time spent (min) 10 20 0 P1 E C A D B F P2 C A E D B F P3 A C E D B F P4 E C A B D F P5 D F A B C E P6 C E A B C E P7 C D A F B E P8 B D E F A C P9 D B E C A F P10 D B E A C F P11 F C B A D E P12 F B C D E A avg B D A C F F D F C A E B

  4. Experiment design • 4 systems, 12 problems • Problem example, correct classes • 6 volunteers, friends of the authors • 3 gr, 1 undergr, 2 eng, 4 Java, 2 not (c++/php) • No one know data source, nor participate the work • 2 minutes to train • Write a simple program to solve the problem • Without debugging, we check if it is correct • 10 lines to 30. • All the four sources, two with meta-model, others source • How to calculate time • All the time spent, divided, 2-5 minutes training, divided • 20 minutes, unsolved -> 30 minutes (subsequent operations)

  5. Experiment process • With meta-model • All use the meta-models, browse and choose • Some check, some choose to believe after the first • Extreme sample • Relations, browse nearby, reuse the prefix code • Without meta-model • Most choose sample client and get result • All volunteers use code search, cross-ref, but many complaint for suffering the problem of naming rules, may fail • Do not notice the nearby code • Some volunteer (D) choose other sample XML data, but blocked by dealing with the node list • One volunteer (E) was scared by the big scale of client,

  6. Result (in summary) • Saved 43% time in average • Horizontal • All improved (due to copy/paste) • For related problems, save significantly (2/6) • For the one with big size, significantly • For the one with good names, significantly • Vertical • Stable with meta-model • Especially important for a freshman (PHP/DOM)

  7. 23 31 28. 1505, ExistsClientTest • 19 29 23. 1320, CoreMonitoringTest • 132 114 131. 2562, JabRefTest • 9 18 14. 2807, GeoRssTest • 84 308 112. 12516, JonasAdminTest • 25 81 25. 5142, FlickrjTest • 11 26 7. 1780, JBossStatusTest • 36 21 53. 1253, WSDLHelper

  8. http://www.schemacentral.com/sc/ooxml/s-shared-bibliography.xsd.htmlhttp://www.schemacentral.com/sc/ooxml/s-shared-bibliography.xsd.html

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