Submission Guide

Submission Guide

Submit your paper at the Koli 2021 EasyChair site

Important Dates

All deadlines are Anywhere on Earth (AoE), which is UTC-12.

Submission deadline (research and short papers): Friday 23rd July
Extended submission deadline (see below): Friday 30th July
Notification of acceptance (research and short papers): Monday 20th September

Deadline for application for student conference grants: Wednesday 22nd September

Submission deadline (poster abstracts/demo papers/DC): Wednesday 22nd September
Notification of acceptance (poster abstracts/demo papers):Tuesday 5th October

Submission of revised manuscripts (all categories): Thursday 7th October

The official publication date is the date the proceedings are made available. This date is expected to be one week prior to the first day of the conference. The official publication date affects the deadline for any patent filings related to published work.


For all accepted works, the method of final presentation will be discussed closer to the time of the conference. We expect all authors will participate in the final conference, being available for discussion, as part of their presentation. Live presentations are strongly preferred.

Registration starts: Tuesday 21st September
Conference registration deadline: Thursday 11th November (week before conference start)
Conference: Thursday 18 November to Sunday 21 November, with sessions arranged across time-zones.


Submit your paper at the Koli 2021 EasyChair site

For research and short papers, only metainformation (i.e., authors, title, abstract, keywords, and submission topics) is required by the submission deadline. This will help us identify reviewers. Your paper must be submitted by the extended submission deadline for consideration. For research papers and short papers, we offer a re-submission period of exactly one week. It will be possible to submit updated versions of the paper until the extended submission deadline.

For poster abstracts and demo papers, both the final paper and metainformation are required by the submission deadline.  

All papers will be evaluated prior to review to ensure that they are clearly in the right track (research paper, short paper, etc.), have been correctly anonymised, and are ready to be reviewed. Each paper that goes to review will receive at least three reviews. A senior PC member will write a metareview based on these reviews and the discussion of the committee.

Paper Formatting and Length Requirements

Papers submitted to Koli Calling must conform to the style rules outlined on the ACM SIG Proceedings website. Authors should use the templates listed at ACM’s site. Note that the templates have been recently revised.

LaTeX Authors: The easiest way to ensure that you have up-to-date versions and the correct fonts is to use Overleaf, but any reasonable LaTeX environment should suffice if you load the correct templates and install any needed packages. (Please use only ACM approved LaTeX-packages.) The easiest way to create a Latex project in Overleaf is to use the ACM Overleaf templates. For all LaTex submissions, use the following documentclass for review (\documentclass[sigconf,anonymous,screen, review]{acmart}). This should produce an author-anonymized, two-column submission with line numbers.

If your paper is accepted, we will contact the authors with instructions, including a new documentclass. The ACM single column format must be used for final submission. The ACM currently uses the TAPS production system which creates both a double column PDF and a single column HTML file from the source files. We are encouraging you to use the double column options in Overleaf for review so that you know what a published PDF might look like. Changing to the required single column format later is relatively easy in Latex.

Word Authors: If you are using Word, follow the tooling and formatting guidelines in This will result in a one-column submission. Failure to follow the guidelines can result in a lot of extra work later, as changing between double and single column formats is challenging in Word.

Page Limits

Koli’s page limits are based on 2-column submissions. Page limits for the various categories include references.

Page limits will be challenging for authors using Word, as they should use a 1-column format to simplify formatting for publication using the ACM Publishing System (TAPS). As a result, we are providing word/pagecount guidelines. 

Research Papers10 double ≈ 16 single column pages (9000 words)
Short Papers5 double ≈ 8 single column pages (4500 words)
Poster Abstracts/Demo Papers2 pages + bibliography (1800 words)

16/8 pages in single column format will result in about 10/5 pages in the TAPS produced PDF with 2 columns.


All submissions should be anonymized. In particular:

  • Remove author names and affiliations. If you are using LaTeX, you can add “anonymous” to the documentclass options to quickly remove author information but will still need to manually remove references within your paper’s text.
  • Select a title that does not clearly identify your research group or project.
  • Remove any identifying information in acknowledgements.
  • Refer to your prior work in the third person, where possible, or deidentify those references if it is not plausible that your work would be continued by others.


Koli Calling is run in cooperation with the ACM and, as a result, follows the ACM’s Authorship Policy. Authors should, therefore, have made substantial intellectual contributions, have participated in drafting and revision, be aware of the submission, and agree to be held accountable for the correctness and integrity of the work.

Submission of Previously Published Works

Koli Calling adheres to the ACM’s Prior Publication and Simultaneous Submission Policy. As a result, Koli does not permit simultaneous submission of work to Koli and another venue with an overlapping submission period.  

The Policy also discourages publication of previously published works except in specific situations, such as publication at a workshop. Before submitting a previously published work, the authors should contact the Koli Calling Chairs to disclose the previous publication and to determine if republication is warranted. In particular, they will consider how much of the work has been revised compared to the prior publication and whether it advances knowledge beyond the prior publication. If submission is allowed and the paper is accepted, the paper must acknowledge (and if possible, cite) the original publication.

Conflicts of Interest

Koli Calling also adheres to the ACM’s Conflict of Interest Policy for ACM Publications. The policy requires that all participants in the publication process, including chairs, reviewers, and authors, disclose conflicts of interest and that parties with a conflict recuse themselves from deliberations or decision-making related to the work.

For authors, this means that conflicts (e.g., source of funding or employer) be disclosed in the work.

For reviewers, including both PC and Senior PC members, this means identifying submissions with which they have a conflict and recusing themselves from review of the paper. Ideally, this will occur during the bidding process, but if a reviewer recognizes that they are in conflict once reviewing starts, they should immediately contact the Chairs for reassignment.

Koli reviewers (including both PC and Senior PC members) are encouraged to submit work to the conference but will, of course, not be involved in the review of that work.

For the chairs, this means identifying submissions with which they have a conflict and recusing themselves from deliberations and decision-making related to the work. Since Koli Calling, by design, has two Chairs, the other Chair will take responsibility, in collaboration with a Senior PC member, for decisions on works that are in conflict with one Chair. The Chair in conflict will not participate in or be aware of any deliberations or decisions taken until notifications are sent to all authors.

Koli Chairs are also permitted to be co-authors on work submitted to the conference but must disclose potential submissions to their co-Chair prior to submission. The co-Chair, in consultation with a senior PC member, may determine that they will not be able to make an decision on the work without the appearance of bias, in which case the work cannot be submitted. In addition, chairs should not be the primary author of works submitted and should not present work. Furthermore, any work submitted with a Chair as an author will not be eligible for the Koli Calling Best Paper award.