![So;ware
Development
is
a
Knowledge
Work
2
Developers
spend
more
than
50%
of
their
Dme
looking
for
informaDon
[Fjeldstad
&
Hamlen
1979][Ko
et
al.
2006]
[Sillito
et
al
2007]
[Zimmermann
&
Begel
2014]](https://image.slidesharecdn.com/msr14tutorial4upload-140601062302-phpapp01/85/Msr14-tutorial-4upload-2-320.jpg)
Msr14 tutorial 4upload
- 1. How Does a Typical 1 How Does a Typical for Mobile Development Look Like? How Does a Typical Tutorial for Mobile Development look like? Rebecca Tiarks, Walid Maalej – MSR’14 Full paper mobis.informatik.uni-hamburg.de/research/publications
- 2. So;ware Development is a Knowledge Work 2 Developers spend more than 50% of their Dme looking for informaDon [Fjeldstad & Hamlen 1979][Ko et al. 2006] [Sillito et al 2007] [Zimmermann & Begel 2014]
- 3. ? Online Tutorials are an Important Source of Knowledge 3
- 4. Example: Using the GPS Sensor of Smartphones 4
- 5. Research QuesDons: Structure 5 1. Length: How long are tutorials? 4. Lists and secDons: How are structural elements such as secHons and lists used in tutorials? 2. Source code: How much source code is in tutorials? 3. Images: What images are included in tutorials? 5. Links: How many links are included in tutorials?
- 6. Research QuesDons: EvoluDon 6 6. EvoluDon: Are there changes in the tutorial structure between different revisions of the system documented by the tutorial?
- 7. Research QuesDons: Content 7 7. Topics: Which topics are covered by development tutorials? 8. Topic popularity: How popular are the topics across different types of tutorials?
- 8. Overview of Research Select Development Platformss Data Collection Phase Select Official Sites Select Community Sites Query Tutorial Sources LDA Topic Modeling Statistical Analysis Data Analyses Phase Image Analysis Data Cleaning Structure Structure Manual Topic Labeling Content Content Query Tutorial Archives 8
- 9. Tutorial # tutorials size (# words) Ø size (# words) Android community 48 108.891 2.269 Android official 91 530.528 5.830 Apple community 469 1.368.306 2.917 Apple official 557 2.013.937 3.616 Windows community 87 62.291 716 Windows official 22 19.139 870 Research Data 9
- 10. Results: Structure 10 1. Length: 2700 words average (both community and official) 4. Lists and secDons: longer (more items) in official but more words per item in community 2. Source code: 70% of all tutorials contain source code 3. Images: used in 70% of tutorials with more images in community tutorials 5. Links: All tutorials include links but the use of links to APIs is heterogeneous
- 11. Results: Tutorial EvoluDon 11 Apple Official Windows Official Windows Community Android Community Andorid Official Apple Community Number of Words 2012 2013
- 12. Results: IdenDfied Topics 12 0% 20% 40% 60% Community Problems, and soluHons LocaHon services AnimaHons ConnecHvity Hardware, screens Games TesHng and debugging Security, and perm. rights Events and gestures MulHmedia Data storage and I/O ApplicaHon lifecycle Dev. environments GUI, layout App store, deploy Architecture Community Official
- 13. Results: Topic Categories and their Popularity 13 Category Topics Pop. offic. Pop. comm. Infrastructure and design Architecture, frameworks, applicaHon lifecycle, data storage, I/O, security, access, permissions, and connecHvity 78% 69% ApplicaDon and services GUI, layout, graphics, animaHons, games, mulHmedia, locaHon, events, and gestures 47% 72% DistribuDon & maintenance App store, deployment, licensing, problems/soluHons, tesHng/debugging, hardware screens, and devices 39% 35% Development environments Development environments 14% 30%
- 14. Summary 14 Tutorials are valuable documentaHon and complement other types of documentaHon. 1 Tutorials evolve possibly with the evoluHon of the system or pladorm being described. 3 Tutorials created by the community seem to be complementary to the official tutorials. 4 “Mobile” tutorials extensively use structural elements. Their content ohen describes design, applicaHon and distribuHon. 2
- 15. Thank you! 15 Prof. Dr. Walid Maalej Rebecca Tiarks mobis.informaHk.uni-‐hamburg.de University of Hamburg, Germany To read the paper: mobis.informaHk.uni-‐hamburg.de/research/publicaHons