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Call for Participation: we have an ongoing research study to understand how developers change code inside the IDE. If you develop Java code, please participate in our study.
My research is in Software Engineering (SE), particularly in interactive program analysis and transformation.
It is widely known that at least two-thirds of software costs are due to evolution,
with some industrial surveys claiming 90%.
My research goal is to enable programmers to interactively and safely change
large programs. Just as machinery fostered the industrial revolution,
machinery automating software changes will foster a revolution in
software technology.
I successfully pioneered interactive program transformations by opening the field of refactoring in cutting-edge domains including mobile, parallelism, component-based, testing, and end-user programming.
Some of the techniques I developed are shipping with the official release of
the popular Eclipse and NetBeans
development environments, and are used by millions of Java programmers everyday.
Research Key Statistics:
- $3.5M as sole or lead PI, ($2.95M from NSF, $602K from industry). My share: $2.37M
- 50+ peer-reviewed conference papers (see all in DBLP )
- 8 best paper awards at flagship/top conferences (FSE'17, ICSME'17, FSE'16, ICSE'14, ICSME'15, ISSTA'13, ICST'13) + 1 most influential award (N-10 years) at ICSME'15 + 4 award nominees
- 41+ full papers in flagship/top ACM/IEEE venues in SE (<25% acceptance ratio)
- Plus 10 journal papers, including 4 in the flagship journals, ACM/IEEE Transactions
- 9 tools released in industrial-strength products, 20M+ downloads
- 4000+ citations, h-index of 34, >400 citations for top-cited paper
REFEREED PUBLICATIONS
Journals
| TSE 2019
| Version Control Systems: An Information Foraging Perspective
Sruti Srinivasa, Mihai CodobanS, David Piorkowski, Danny Dig, Margaret Burnett
IEEE Transactions on Software Engineering (TSE), Jul 2019
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| EMSE 2019
| The Life-Cycle of Merge Conflicts: Processes, Barriers, and Strategies
Nicholas Nelson, Caius Brindescu, Shane McKee, Anita Sarma, Danny Dig
IEEE Empirical Software Engineering (EMSE), February 2019, pp 1–45.
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| PACMPL 2017
| Understanding the use of lambda expressions in Java
Davood Mazinanian, Ameya Ketkar, Nikolaos Tsantalis, and Danny Dig
Proceedings of the ACM on Programming Languages PACMPL'17, Volume 1 Issue OOPSLA, Article No. 85, 31 pages, Oct 2017.
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| Software 2015
| Refactoring for Asynchronous Execution on Mobile Devices (an earlier version appeared here)
Danny Dig
IEEE Software (Software), Volume 32, Issue 6, pp 52-61, Nov/Dec 2015.
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| TOSEM 2015
| Effective Techniques for Static Race Detection in Java Parallel Loops
Cosmin Radoi and Danny Dig
ACM Transactions on Software Engineering and Methodology (TOSEM), Volume 24, Number 4, pp 1-30, Aug 2015.
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| STVR 2015
| A Study and Toolkit of CHECK-THEN-ACT Idioms of Java Concurrent Collections
Yu Lin and Danny Dig
Wiley: Software Testing, Verification and Reliability (STVR), Volume 25, Issue 4, pp 397-425, June 2015.
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| Software 2011
| A Refactoring Approach to Parallelism (an earlier version as a Tech Report)
Danny Dig
IEEE Software (Software) Volume 28, Issue 1, pp. 17-22, Jan/Feb 2011
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| TSE 2010
| Finding Bugs in Web Applications Using Dynamic Test Generation and Explicit State Model Checking
Shay Artzi, Adam Kiezun, Julian Dolby, Frank Tip, Danny Dig, Amit Paradkar, Michael D. Ernst
IEEE Transactions on Software Engineering (TSE), Volume 34, Issue 4, pp 474-494
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| TSE 2008
| Effective Software Merging in the Presence
of Object-Oriented Refactorings,
Danny Dig, Kashif Manzoor, Ralph Johnson, and
Tien Nguyen
In IEEE Transactions on Software Engineering (TSE), Volume 34, Number 3,
pp 321-335, May/June 2008
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| JSME 06
| How do APIs evolve? A story of
refactoring
Danny Dig and Ralph Johnson
Journal of Software Maintenance and Evolution (JSME) Volume 18, Issue 2, pp. 83-107, March/April 2006
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Conference Papers
| ICSE 2019
| Type Migration in Ultra-Large-Scale Codebases
Ameya Ketkar, Ali Mesbah, Davood Mazinanian, Danny Dig and Edward Aftandilian
To Appear in Proceedings of ICSE'19, 11 pages, Montreal, Canada, May 2019.
Acceptance ratio: 21% (109/529)
Patches Contributed to leading Open Source projects
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| ICSE 2019
| Graph-based Mining of In-the-Wild, Fine-grained, Semantic Code Change Patterns
Hoan Nguyen, Tien Nguyen, Danny Dig, Son Nguyen, Hieu Tran and Michael Hilton
To Appear in Proceedings of ICSE'19, 11 pages, Montreal, Canada, May 2019.
Acceptance ratio: 21% (109/529)
Data Corpus
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| HICSS 2019
| Examining User-Developer Feedback Loops in the iOS App Store
Kendall Bailey, Meiyappan Nagappan, and Danny Dig
Proceedings of HICSS'19, pp 1-10, Maui, HI, Jan 2019.
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| ICSE 2018
| Accurate and efficient refactoring detection in commit history
Nikolaos Tsantalis, Matin Mansouri, Laleh Mousavi Eshkevari, Davood Mazinanian, and Danny Dig
Proceedings of ICSE'18, pp 483-494, Gothenburg, Sweden, May 2018..
Acceptance ratio: 20% (105/502)
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| OOPSLA 2017
| Understanding the use of lambda expressions in Java ( ACM SIGPLAN Distinguished Artifact Award)
Davood Mazinanian, Ameya Ketkar, Nikolaos Tsantalis, and Danny Dig
Proceedings of OOPSLA'17, 31 pages, Vancouver, BC, Canada, Oct 2017.
Acceptance ratio: 29.6%, (66/223)
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| FSE 2017
| Trade-Offs in Continuous Integration: Assurance, Security, and Flexibility ( ACM SIGSOFT Distinguished Paper Award)
Michael Hilton, Nicholas Nelson, Timothy Tunnell, Darko Marinov, Danny Dig
Proceedings of FSE'17, 11 pages, Paderborn, Germany, Sept 2017.
Acceptance ratio: 24% (72/295)
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| ICSME 2017
| Software Practitioner Perspectives on Merge Conflicts and Resolutions ( IEEE TCSE Distinguished Paper Award)
Shane McKee, Nicholas Nelson, Anita Sarma, and Danny Dig
Proceedings of ICSME'17, 12 pages, Shanghai, China, Sept 2017.
Acceptance ratio: 27.8% (42/151)
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| FSE 2016
| API Code Recommendation Using Statistical Learning from Fine-grained Changes ( ACM SIGSOFT Distinguished Paper Award)
Anh Nguyen, Michael Hilton, Mihai Codoban, Hoan Nguyen, Lily Mast, Eli Rademacher, Tien Nguyen, Danny Dig
Proceedings of FSE'16, 11 pages, Seattle, WA, USA, Nov 2016.
Acceptance ratio: 27% (74/273)
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| FSE 2016
| Interactive and Guided Architectural Refactoring with Search-Based Recommendation
Yun Lin, Xin Peng, Yuanfang Cai, Danny Dig, Diwen Zheng, Wenyun Zhao
Proceedings of FSE'16, 11 pages, Seattle, WA, USA, Nov 2016.
Acceptance ratio: 27% (74/273)
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| ASE 2016
| Usage, Costs, and Benefits of Continuous Integration in Open-Source Projects
Michael Hilton, Timothy Tunnell, Kai Huang, Darko Marinov, and Danny Dig
Proceedings of ASE'16, pp 426-437, Singapore, Sept 2016.
Acceptance ratio: 19% (57/298)
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| ICSE 2016
| Improving Refactoring Speed by 10X ( Runner-up ACM SIGSOFT Distinguished Paper Award )
Jongwook Kim, Don Batory, Danny Dig, and Maider Azanza
Proceedings of ICSE'16, 11 pages, Austin, TX, USA, May 2016.
Acceptance ratio: 19% (101/530)
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| MobileSoft 2016
| Understanding Code Smells in Android Applications
Umme Ayda Mannan, Iftekhar Ahmed, Rana Abdullah M. Almurshed, Danny Dig, Carlos Jensen
Proceedings of MOBILESoft'16, pp 225-234, Austin, TX, USA May 2016.
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| XP 2016
| TDDViz: Using Software Changes to Understand Conformance to Test Driven Development
Michael Hilton, Nicholas Nelson, Hugh McDonald, Sean McDonald, Ron Metoyer, Danny Dig
Proceedings of XP'16, 10 pages, Edinburgh, UK, May 2016.
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| ASE 2015
| Study and Refactoring of Android Asynchronous Programming
Yu Lin, Semih Okur, Danny Dig
Proceedings of ASE'15, 11 pages, Lincoln, NE, USA, Nov 2015.
Acceptance ratio: 20.7% (60/289)
webpage, corpus, and here is a demo video
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| ICSME 2015
| Software History under the Lens: A Study on Why and How Developers Examine It ( Best Paper Award)
Mihai Codoban, Sruti Srinivasa Ragavan, Danny Dig, Brian Bailey
Proceedings of ICSME'15, pp 1-10, Bremen, Germany, Sept 2015.
Acceptance ratio: 22% (32/148)
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| ICSME 2015
| Scripting Parametric Refactorings in Java to Retrofit Design Patterns
Jongwook Kim, Don Batory, Danny Dig
Proceedings of ICSME'15, pp 211-220, Bremen, Germany, Sept 2015.
Acceptance ratio: 22% (32/148)
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| FSE 2014
| Retrofitting Concurrency for Android Applications through Refactoring
Yu Lin, Cosmin Radoi, Danny Dig
Proceedings of FSE'14, pp 341-352, Hong Kong, China, Nov 2014.
Acceptance ratio: 22% (61/273)
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| ICSE 2014
| A Study and Toolkit for Asynchronous Programming in C# ( ACM SIGSOFT Distinguished Paper Award)
Semih Okur, David Hartveld, Danny Dig, Arie van Deursen
Proceedings of ICSE'14, pp 1117-1127, Hyderabad, India, May 2014.
Acceptance ratio: 20% (99/499)
webpage, educational resources
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| ICSE 2014
| Mining fine-grained code changes to detect unknown change patterns ( Runner-up ACM SIGSOFT Distinguished Paper Award )
Stas Negara, Mihai Codoban, Danny Dig, Ralph Johnson
Proceedings of ICSE'14, pp 803-813, Hyderabad, India, May 2014.
Acceptance ratio: 20% (99/499)
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| ICSE 2014
| How do centralized and distributed version control systems impact software changes?
Caius Brindescu, Mihai Codoban, Sergey Shmarkatiuk, Danny Dig
Proceedings of ICSE'14, pp 322-333, Hyderabad, India, May 2014.
Acceptance ratio: 20% (99/499)
webpage, corpus
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| ECOOP 2014
| Converting Parallel Code from Low-Level Abstractions to Higher-Level Abstractions
Semih Okur, Cansu Erdogan, Danny Dig
Proceedings of ECOOP'14, pp 515-540, Uppsala, Sweden, July 2014.
Acceptance ratio: 27% (27/101)
webpage, educational resources
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| MobileSoft 2014
| Refactoring Local to Cloud Data Types for Mobile Apps
Michael Hilton, Arpit Christi, Danny Dig, Michal Moskal, Sebastian Burckhardt, Nikolai Tillmann
Proceedings of MobileSoft'14 in conjunction with ICSE'14, pp 83-92, Hyderabad, India, May 2014.
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| FSE 2013
| Crossing the Gap from Imperative to Functional
Programming through Refactoring
Alex Gyori, Lyle Franklin, Danny Dig, Jan Lahoda
Proceedings of FSE'13, pp 543-553, Saint Petersburg, Russia, Aug 2013.
Acceptance ratio: 20% (51/251)
demo video
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| ISSTA 2013
| Practical Static Data Race Detection for Java Parallel Loops ( ACM SIGSOFT Distinguished Paper Award)
Cosmin Radoi, Danny Dig
Proceedings of ISSTA'13, pp 178-190, Lugano, Switzerland, July 2013.
Acceptance ratio: 26% (32/124)
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| ECOOP 2013
| A Comparative Study of Manual and Automated Refactoring
Stas Negara, Nicholas Chen, Mohsen Vakilian, Ralph Johnson, Danny Dig
Proceedings of ECOOP'13, pp 552-576, Montpelier, France, July 2013.
Acceptance ratio: 25% (29/116)
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| ICST 2013
| Check-then-Act Misuse of Java Concurrent Collections ( Best Paper Award )
Yu Lin, Danny Dig
Proceedings of ICST'13, pp 164-173, Luxembourg, March 2013.
Acceptance ratio: 25% (38/152)
web page, tool, corpus
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| FSE 2012
| How do Developers Use Parallel Libraries?
Semih Okur, Danny Dig
Proceedings of FSE'12, pp 54-65, Raleigh, USA, Nov 2012.
Acceptance ratio: 17% (35/201)
Online Exemplars
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| ICSM 2012
| Refactoring Meets Spreadsheet Formulas
Sandro Badame, Danny Dig
Proceedings of ICSM'12.
Acceptance ratio: 25% (46/181)
Demo Video
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| ECOOP 2012
| Is It Dangerous to Use Version Control Histories to Study Source Code Evolution?
Stas Negara, Mohsen Vakilian, Nicholas Chen, Ralph Johnson, Danny Dig
Proceedings of ECOOP'12, pp 79-103, Beijing, China, June 2012.
Acceptance ratio: 21% (30/140)
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| ICSE 2011
| Transformation for Class Immutability ( Runner-up ACM SIGSOFT Distinguished Paper Award)
Fredrik Kjolstad, Danny Dig, Gabriel Acevedo, Marc Snir
Proceedings of ICSE'11, pp 61-70, Hawaii, USA, May 2011.
Acceptance ratio: 14% (62/441)
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| ASE 2009
| Inferring Method Effect Summaries for Nested Heap Regions
Mohsen Vakilian, Danny Dig, Robert Bocchino, Jeff Overbey, Vikram Adve, Ralph Johnson
Proceedings of ASE'09, pp 421-432, Auckland, New Zealand, Nov 2009.
Acceptance ratio: 17% (38/222)
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| ASE 2009
| ReAssert: Suggesting Repairs for Broken Unit Tests
Brett Daniel, Vilas Jagannath, Danny Dig, Darko Marinov
Proceedings of ASE'09, pp 433-444, Auckland, New Zealand, Nov 2009
Acceptance ratio: 17% (38/222).
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| OOPSLA 2009
| A Type and Effect System for Deterministic Parallel Java
Robert Bocchino, Vikram Adve, Danny Dig, Sarita Adve, Stephen Heumann, Rakesh Komuravelli, Jeffrey Overbey,
Patrick Simmons, Hyojin Sung, Mohsen Vakilian
Proceedings of OOPSLA'09, pp 97-116, Orlando, USA, Oct 2009.
Acceptance ratio: 17% (25/144).
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| ICSE 2009
| Refactoring Sequential Java Code for Concurrency via Concurrent
Libraries
Danny Dig, John Marrero, Michael D. Ernst
Proceedings of International Conference on Software Engineering (ICSE'09), pp 397-407, Vancouver, Canada, May 2009.
Acceptance ratio: 12% (50/405)
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| ISSTA 2008
| Finding
bugs in dynamic web applications
Shay Artzi, Adam Kiezun, Julian Dolby, Frank Tip,
Danny Dig, Amit Paradkar, Michael D. Ernst
Proceedings of
International Symposium on Software Testing and Analysis
(ISSTA'08), pp 261-272, Seattle, USA, July 2008.
Acceptance ratio: 26% (26/100).
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| ICSE 2008
| ReBA:
Refactoring-aware Binary Adaptation of Evolving Libraries
Danny Dig, Stas Negara, Vibhu Mohindra, Ralph
Johnson
Proceedings of International Conference on Software Engineering(
ICSE'08), pp 441-450, Leipzig, Germany, May 2008.
Acceptance ratio: 15% (56/371).
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| FSE 2007
| Automated
Testing of Refactoring Engines
Brett Daniel, Danny Dig, Kelly Garcia, Darko
Marinov
Proceedings of Foundations of Software Engineering (FSE'07), pp 185-194, Dubrovnik, Croatia, September 2007.
Acceptance ratio: 17% (43/251).
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| ICSE 2007
| Refactoring-aware
Configuration Management for Object-Oriented Programs
Danny Dig, Kashif Manzoor, Ralph Johnson, Tien Nguyen
Proceedings of International Conference on Software Engineering (ICSE'07), pp 427-436, Minneapolis, MN, USA, May 2007.
Acceptance ratio: 15% (50/334).
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| ECOOP 2006
| Automated
Detection of Refactorings in Evolving Components
Danny Dig, Can Comertoglu, Darko Marinov, and
Ralph Johnson
Proceedings of European Conference on OO Programming
(ECOOP'06), pp. 404-428, Nantes, France, July 2006.
Acceptance ratio: 13% (21/160)
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| MobiSys 2006
| Pegboard:
A Framework for Developing Mobile Applications
Danny Soroker, Ramon Caceres, Danny Dig, Andreas Schade, Susan
Spraragen, and Alpana Tiwari
Proceedings of MobiSys'06, pp. 138-150, Uppsala, Sweden, June 2006.
Acceptance ratio: 15% (19/120)
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| ICSM 2005
| The Role of Refactorings in API
Evolution ( Runner-up Best Paper Award in 2005, then Most Influential Paper Award in 2015)
Danny Dig and Ralph Johnson
Proceedings of International Conference on Software Maintenance (ICSM'05), pp. 389-398,
Budapest, Hungary, September 2005.
Acceptance ratio: 31% (55/180)
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Refereed Formal Demos, Short Conference, or Workshop Papers
| ICSE'16 Visions 2025
| COPE: Vision for a Change-Oriented Programming Environment
Danny Dig, Ralph Johnson, Darko Marinov, Brian Bailey, Don Batory
ACM/IEEE International Conference on Software Engineering - Visions 2025 Track, pp 4, Austin, TX, USA, May 2016.
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| PPoPP'15
| Are Web applications ready for parallelism?
Cosmin Radoi, Stephan Herhut, Jaswanth Sreeram, Danny Dig
ACM Symposium on Principles and Practice of Parallel Programming (PPoPP), pp 289-290, San Francisco, CA, USA, Feb 2015.
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| FSE'14:Demo
| BumbleBee: a refactoring environment for spreadsheet formulas
Felienne Hermans, Danny Dig
ACM SIGSOFT International Symposium on Foundations of Software Engineering (FSE), pp 747-750, Hong Kong, China, Nov 2014.
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| ETSE'11
| Automated GUI Refactoring and Test Script Repair
Brett Daniel, Qingzhou Luo, Mehdi Mirzaaghaei, Danny Dig, Darko Marinov, Mauro Pezze
First International Workshop on End-to-End Test Script Engineering (ETSE 11), pp 38-41, Toronto, Canada, July 2011.
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| IWMSE'11
| How do programs become more concurrent? A story of program transformations
Danny Dig, John Marrero, Michael Ernst
ICSE 2011 International Workshop on Multicore Software Evolution (IWMSE'11), pp 1-8, Hawaii, USA, May 2011.
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| CAP 2010
| Bringing the HPC Programmer's IDE into the 21st Century through Refactoring
Fredrik Kjolstad, Danny Dig, Marc Snir
SPLASH 2010 Workshop on Concurrency for the Application Programmer (CAP'10), pp 1-4, Reno, NV, USA, Oct 2010.
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| ICSM 2010
| A practical tutorial on refactoring for parallelism
Danny Dig
International Conference on Software Maintenance: Tutorials (ICSM'10), pp 1-2, Timisoara, Romania, Sept 2010.
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| ParaPLoP 2009
| N-Body Pattern Language
Danny Dig, Ralph Johnson, Marc Snir
Workshop on Parallel Programming Patterns (ParaPLoP'09), pp 1-12, Santa Cruz, CA, USA, June 2009.
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| ASE 2007
| Automated
Detection of API Refactorings in Libraries
Kunal Taneja, Danny Dig, Tao Xie
Proceedings of Automated Software Engineering (ASE'07), pp 377-380, Atlanta, GA, USA, November 2007.
Acceptance ratio: 25% ((37+40)/312).
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| ETX 2006
| MolhadoRef:
a refactoring-aware SCM Infrastructure for OO Programs.
Danny Dig, Kashif Manzoor, Tien N. Nguyen,
Ralph Johnson
Eclipse Technology Exchange ETX'06 (held at OOPSLA'06), pp 25-29, Portland, OR, USA, October 2006.
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| OOPSLA 2005
| Using
Refactorings to Automatically Update Component-Based
Applications
Danny Dig
Doctoral Symposium at
Object-oriented programming, systems, languages and applications
(OOPSLA'05), in Companion
Proceedings of OOPSLA'05, San Diego - Oct 2005. 1st Prize Winner of the ACM SIGPLAN Student Research Competition
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| PLoP 2005
| The Bull and the Calf - patterns
for effective pair-programming
Danny Dig
11th Conference on Pattern Languages of Programs (PLoP'04), Monticello - September
2004.
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THESIS
SOFTWARE
- LambdaFicator enables Java programmers to use lambda expressions and functional iterators.
- Immutator is a refactoring tool for converting mutable into immutable classes.
- ReLooper, parallelizes a sequential loop using Java's upcoming ParallelArray.
- Concurrencer, extends Eclipse's refactoring engine with three refactorings: convert int to AtomicInteger, convert.HashMap to ConcurrentHashMap, convert sequential divide-and-conquer algorithm into a parallel divide-and-conquer.
- ReBA, an
Eclipse plugin that takes as input a library and generates a
version which is backwards compatible
- ASTGen, a program
generator for automatically testing refactoring engines.
- MolhadoRef, a
refactoring-aware Software Configuration Management tool, built as
a plug-in for Eclipse
- RefactoringCrawler,
a plugin for Eclipse to detect
refactorings that happened between two versions of a software
component
- JavaRefactor
(the first open-source refactoring engine for Java), implemented
as a plugin for JEdit (requires
JEdit 4.0)
SERVICE
- I started a popular Practice for the Academic
Job Talks (PACAJOT)
seminar at MIT and one at Illinois
- On Feb 27th I organized Inspirations (try
this
link from outside UIUC domain), an event aimed toward
undergraduate students at UIUC who are seriously contemplating
going to graduate school. Inspirations will provide them with a
"taste of graduate school". Here are my slides.
- I am trying to foster a live community of refactoring
researchers. You can find more about this at refactoring.info
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