25th ACM International Systems and Software Product Line Conference (SPLC 2021)
Call for Challenge Track

September 6-11, 2021
Leicester, United Kingdom (hybrid participation will be allowed)
Web site: https://splc2021.net/call-for-papers/call-for-challenge-cases
Twitter:  @splcconf
The idea of the challenge track is to provide participants with a set of case studies that tackle relevant SPL problems and challenge the state of the art. The challenge track happens in two phases. In the first phase, there will be a call for cases. Submitted cases will be reviewed by the challenge co-chairs to ensure that all required information is clearly described. Accepted cases will be part of the official conference proceedings. Authors of the accepted cases must attend the challenge track and participate in the discussion. In the second phase, there will be a call for solutions to the accepted cases, as well as for cases from previous years. Submitted case solutions will be peer-reviewed by the challenge program committee. Accepted solutions will also be part of the official conference proceedings. Authors of accepted solutions must present their papers during the conference. Note that this year online participation will be permitted.
You can check the challenges from previous years on the official website of the challenge track: https://variability-challenges.github.io/


If you have a case study which may be suitable to SPLE community, we encourage you to write a short description with the following information:
• What is your dataset and how was it obtained?
• What is its size?
• How can this data be accessed?
• Do you provide tools to process the data?
• Provide at least one concrete question you want participants to answer. You can provide multiple questions.
• For each question, provide the criteria for evaluating an answer/solution.

Please submit your description through EasyChair (Challenge Track). Case study proposals have a minimum length of 2 pages and a maximum length of 6 pages, including all references and figures. Submissions must follow the ACM Master Article Template: https://www.acm.org/publications/proceedings-template.


The following describes the important dates for the whole timeline of the challenge track.
• Case Submission Deadline: March 5, 2021
• Case Notification: March 19, 2021
• Case Camera Ready, Solution Call Released: March 28, 2021
• Solution Submission Deadline: June 11, 2021
• Solution Notification Deadline: June 25, 2021
• Camera-ready Solution Papers: July 9, 2021


• Paul Temple, University of Namur, BE
• Iris Reinhartz-Berger, University of Haifa, IL