Upgrading your "game" - state-of-the-art software research and why you should care Robert Feldt Software Engineering Research Lab, BTH 2007-10-17
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We are also humans!
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Your Use of Research • New/Better/Alternative Ideas (N) • Strengthen/Confirm/Refine Beliefs (S) • Contradict Beliefs (X) • Point to Future/New/Missed Areas (F) • Extend/Move Ideas to Your/Other Area (E) • Attracting personnel onsdag 17 oktober 2007
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No Fancy Pics!
Intentionally left blank! Mysterious...
At least 20 pages!
Short papers are for wimps! We’re dead serious! onsdag 17 oktober 2007
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November 2007 • Diff AST’s instead of src for change analysis • Patterns for eliciting usability requirements • Recover arch/design facts if not doc’ed • Reliability models incl. expert judgements onsdag 17 oktober 2007
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October 2007 issue • Choose web tests from models of uses • Proving in models of parallel software • Predicting faults by src code metrics • Statistical modeling of structure and dev behavior in large OO systems
• Categorize component models onsdag 17 oktober 2007
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Web app testing Choose tests from models of actual uses
Heuristics for selecting subsets of uses based on lattice Eval on 3 systems in 1k-10k LOC range (OSS + Univ) onsdag 17 oktober 2007
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UoR: Web app testing • Why useful to you? • • • • • • •
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N: Reduce number of tests with similar coverage N: System design for auto collection and execution S: Trade-off test suite size vs fault detection capability F: Not autotesting!? Not autotesting web apps!? E: Autocapturing and “massaging” non-system tests? E:Varying/Combining uses for strange situations +: Generating new tests based on the models? 11
September 2007 • • •
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Best copy-paste detection tools to ease bug fixing Models supporting flexible refactoring tools Systematic testing of model-based code gens
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August 2007 • • • •
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Preserve meaning from models to embedded code Tool supporting better distributed, 24/7 QA Auto formal docs from dynamic testing & exec Company stock price implications of security bugs
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Stock price if sec bug • 147 security bug reports for 18 firms • -0.63% (-860M) market value on disclosure • Lose more in competitive markets • Smaller firms lose more • Releasing patch greatly reduces loss onsdag 17 oktober 2007
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UoR: Stock price if bug • Why useful to you?
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S: Security defect reports hurt you
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E: Non-sec defects? Usability defects?
S: Find & release patch as quickly as possible S/F: Learn “Crisis Management” in case of media crisis? F: Know about all press about your firm and product, even if small
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July 2007 • Annotate UML to visualize design patterns • Reduce test suites via program slicing • Better compression of mobile Java bytecode
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May 2007 • Fault distributions in large sw systems • Classifying runtime exec traces • Software licensing and price guidelines • Unclear if general cost models really work onsdag 17 oktober 2007
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Fault distributions • Three large, successive telecom projects • •
45-90 modules/proj of 10K-100K LOC/module Mostly C, some Java code
• Small number of modules have most faults! • Fault persistence = many early => many later • Not clear if larger size means more faults • Fault densities similar in similar projects onsdag 17 oktober 2007
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UoR: Fault distributions • S: Many faults => Expect even more! • S:You+Process+Context determines fault densities
• X: No clear connection size -> faults • E: Does it hold for smaller/my projects?
What do I need to measure to find out?
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Myths vs Stats • “Fail to use real langs/envs” •
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60% is specific or applied to lang (Java and/or C) Non-mainstream only in one case
“Uses toy examples”
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13% small or toy examples/data 20% “university” examples/data 67% uses industrial and/or OSS examples/date
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Myths vs Facts • “Not relevant to my situation” • • •
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Really so? Can you adapt/try idea in your context? Can you expect it to be exactly your context? Let researchers in to make it relevant to you!
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So why should you care? • Get new ideas/edge, support decisions, deepen thinking, expand horizons
• We are essentially a FREE resource • You Big => We your research ”consultants” • You Small => We your “outsourced” R&D • New knowledge is fun • We mold your future colleagues •
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Influence us to make something useful out of them ;) 23
What can you do? • At least skim some journals • Sign up on swell.se • Read RSS feeds with plain-text news • Take part in Workshops & Confs • Contact us for collaboration • We want to do this together with you! onsdag 17 oktober 2007
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Resources •
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Journals
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IEEE Transactions on SE (top) ACM Transactions on SW Eng & Methodology (2nd) IEEE Software (lighter) Automated SE journal (growing) Empirical SE (growing)
Conferences:
http://tinyurl.com/ywqt6j
SE Conf Map:
http://ase.csc.ncsu.edu/semap/ 25
BTH/SERL • SERL = Swedens largest SE research group •
Req Eng, Automated V&V, Empirical
• 1 Professor (top 3 in world), 6 PhDs, 10 PhD students
• BTH = Blekinge Tekniska Högskola • • •
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Focused on IT & Sustainability Largest # of international students in Sweden Bachelor SE, MSc, Master SE, EuroMaster SE 26
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Some SERL Successes • “Fault slip-through model” @ Ericsson • “Req Abstraction Model” @ ABB & DHR •
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30% less defects overall Improved communication
“Implementation Proposals” @ ABB
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For distributed/global projects Substantially decrease misunderstandings Support knowledge transfer between sites 28
Questions / Discussion • Do you care about Software / SE research? •
Why / Why not?
• How can we be more useful to you? • What can you contribute with? • How create win-win collaboration? onsdag 17 oktober 2007
state-of-the-art software research and why you should ...
Upgrading your "game". - state-of-the-art software research and why you should care. Robert Feldt ... Predicting faults by src code metrics. ⢠Statistical modeling of structure and dev behavior in large OO systems ... Annotate UML to visualize design patterns. ⢠Reduce test suites via program slicing. ⢠Better compression of ...
Oct 17, 2007 - state-of-the-art software research and why you should care. Robert Feldt .... âReq Abstraction Modelâ @ ABB & DHR. ⢠30% less defects overall.
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