The conference seeks original research papers in all areas of computational complexity theory, studying the absolute and relative power of computational models under resource constraints. We welcome contributions from all topics with connections to or motivated by questions in complexity theory, broadly construed. Papers that expand the reach of complexity theory, or raise important problems that can benefit from the perspective and techniques of computational complexity, are encouraged. Possible topics include but are not limited to:
Reducibility and completeness
Complexity in other concrete computational models
Interactive and probabilistic proof systems
Logic and descriptive complexity
Pseudorandomness and derandomization
Average case complexity
Complexity-theoretic aspects of:
optimization (including inapproximability, continuous optimization)
streaming and sublinear computation
Deadlines: Papers must be submitted electronically via the submission server, and received by Monday, February 17, 2020, 5:00 pm EST. (The submission server is expected to open by mid November, 2019.) Notification of acceptance will be sent by April 30, 2020, and final camera-ready copies of accepted papers will be due in mid May 2020.
Format: Submissions should start with a title page consisting of the title of the paper; each author\’s name, affiliation, and email address; and an abstract of 1-2 paragraphs summarizing the paper\’s contributions. A submission must contain within its first 10 pages a clear presentation of the merits of the paper, including discussion of its importance, prior work, and an outline of key technical ideas and methods used to achieve the main claims (similar to the content of a brief oral presentation). There is no bound on the total length of a submission, but material other than the abstract, references, and the first 10 pages is considered as supplementary and will be read at the committee\’s discretion.
Submissions should include proofs of all central claims.
The submission should be in single-column format, use at least 11-point font, and have standard margins and spacing between lines. Submissions deviating from these guidelines risk rejection without consideration of their merits. Instructions for formatting camera-ready versions will be communicated to the authors of accepted papers.
Additional remarks: In addition to the submission, authors may optionally send a short email to the program committee (PC) chair at firstname.lastname@example.org containing any additional remarks for the PC, such as the relationship with independent/concurrent work, differences from prior versions, conflict of interest statements, or clarifications concerning prior reviews of the work.
Conflict of interest: We expect PC members and reviewers to recuse themselves from the evaluation of any submission, if they would not be able to give an objective opinion due to some conflict of interest (COI). Some examples why a COI may arise are being a thesis advisor, being an immediate family member or close friend, sharing a recent institutional affiliation or being a close collaborator. Any author may write to the PC chair at email@example.com if there is a COI that may not be covered by the above measure. They need only give the names and affiliations of the people with whom a COI exists; no explanation is required. The COI will be held in confidence by the PC chair.
Simultaneous submission policy: Material which has been previously published in a journal or another conference proceedings, or which is scheduled for publication prior to August 2020, will not be considered for acceptance. Simultaneous submission of the same or essentially the same material to another conference with published proceedings is not allowed.
Confidentiality: All submissions will be treated as confidential, and will only be disclosed to the committee and their chosen sub-referees.
Online posting: Authors are encouraged to post full versions of their submissions in a freely accessible on-line repository such as the Electronic Colloquium on Computational Complexity or the arXiv. It is hoped that authors of accepted papers will make full versions of their papers publicly available by the camera-ready deadline.
Proceedings: As in recent years, the conference proceedings are expected to be published under a Creative Commons BY license in the Leibniz International Proceedings in Informatics (LIPIcs) series. Publication in the conference proceedings does not preclude subsequent journal publication.
Presentation: Authors of accepted papers are expected to present their work at the conference. The program committee will determine time allocations for presentations (between 15 and 45 minutes).
Best student paper award: This award will be given to the best paper written solely by one or more students as judged by the program committee. A paper is eligible if all authors are full-time students on the day of the submission deadline. Authors should indicate their eligibility by email to the PC chair at firstname.lastname@example.org. The program committee may decline to make the award or may split it among several papers.
Best paper award: This award will be given to the best paper submitted to the conference as judged by the program committee. The program committee may decline to make the award or may split it among two or more papers. Full versions of the papers chosen by the program committee to receive the best paper award will be invited for submission to the Journal of the ACM.
Special journal issue: The program committee will invite full versions of a select number of conference submissions to a special issue of the journal Theory of Computing.
Dates and location: The conference will be held from Tuesday, July 28 to Friday July 31, 2020 in Saarbruecken, Germany. The conference will be preceded by a day of tutorials on Monday, July 27, 2020.
Travel allowances: In order to defray the costs of attending the conference, travel allowances will be offered to students. More information will be made available on the conference webpage in due time.
Visas: Germany is in the Schengen Area. A visa for Germany may be needed for attending the conference, e.g., for citizens of China, India, and Russia. See the visa web page of the German Federal Foreign Office for the exact rules for short-term stay visas. If a visa is needed, please get in touch with your local German consulate as soon as possible. Feel free to contact the local arrangements committee if you need a letter to obtain your visa.
Per Austrin, KTH Royal Institute of Technology
Zeev Dvir, Princeton University
Prahladh Harsha, Tata Institute of Fundamental Research
Toniann Pitassi, University of Toronto and IAS
Noga Ron-Zewi, Haifa University
Shubhangi Saraf (Chair), Rutgers University
Avishay Tal, University of California at Berkeley
Salil Vadhan, Harvard University
Ryan Williams, Massachusetts Institute of Technology
Ronald de Wolf, CWI and University of Amsterdam
Amir Yehudayoff, Technion – Israel Institute of Technology
Local Arrangements Committee
Markus Bläser (Chair), Universität des Saarlandes
Board of Trustees
Venkatesan Guruswami (President), Carnegie Mellon University
Michal Koucký, Charles University
Shachar Lovett, University of California at San Diego
Ashwin Nayak, University of Waterloo
Ryan O\’Donnell, Carnegie Mellon University
Rahul Santhanam, Oxford University
Rocco Servedio, Columbia University
Ronen Shaltiel, University of Haifa
Ryan Williams, Massachusetts Institute of Technology