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ICFP 2020
Thu 20 - Fri 28 August 2020

The OCaml Users and Developers Workshop brings together industrial users of OCaml with academics and hackers who are working on extending the language, type system, and tools. Previous editions have been co-located with ICFP 2012 in Copenhagen, ICFP 2013 in Boston, ICFP 2014 in Gothenburg, ICFP 2015 in Vancouver, ICFP 2016 in Nara, ICFP 2017 in Oxford, ICFP 2018 in St Louis, and ICFP 2019 in Berlin, following the OCaml Meetings in Paris in 2010 and 2011.

OCaml 2020 will be held on August 28th, 2020 in New Jersey, USA, co-located with ICFP 2020.

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05:30 - 08:30
EcosystemOCaml at OCaml
Chair(s): Florian Angeletti Inria

Infrastructure, tooling, and ecosystem in general.

05:30
60m
Keynote
The OCaml Platform
OCaml
06:30
30m
Talk
OCaml-CI : A Zero-Configuration CI
OCaml
Thomas Leonard OCaml Labs, Craig Ferguson Tarides, Kate Deplaix OCaml Labs, Magnus Skjegstad Tarides and OCaml Labs, Anil Madhavapeddy OCaml Labs
07:00
30m
Talk
The final pieces of the OCaml documentation puzzle
OCaml
Jonathan Ludlam University of Cambridge, Gabriel Radanne Inria, Leo White Jane Street
07:30
30m
Talk
API migration: compare transformed
OCaml
Joseph Harrison University of Kent, UK, Steven Varoumas University of Kent, Simon Thompson University of Kent, Reuben Rowe University College London
08:00
30m
Talk
Parallelising your OCaml Code with Multicore OCaml
OCaml
Sadiq Jaffer Opsian and OCaml Labs, Sudha Parimala IIT Madras, KC Sivaramakrishnan IIT Madras, Tom Kelly OCaml Labs, Anil Madhavapeddy OCaml Labs
Pre-print
09:00 - 11:00
ApplicationsOCaml at OCaml
Chair(s): Marcello Seri Bernoulli Institute for Mathematics, Computer Science and Artificial Intelligence, University of Groningen

Talks about new and existing OCaml applications and libraries.

09:00
30m
Talk
A Simple State-Machine Framework for Property-Based Testing in OCaml
OCaml
Jan Midtgaard University of Southern Denmark
09:30
30m
Talk
The ImpFS filesystem
OCaml
Tom Ridge University of Leicester, UK
10:00
30m
Talk
Irmin v2
OCaml
Clément Pascutto Tarides, Université Paris-Saclay, CNRS, ENS Paris-Saclay, LMF, Ioana Cristescu INRIA, France, Craig Ferguson Tarides, Thomas Gazagnaire Tarides, Romain Liautaud Tarides
10:30
30m
Talk
AD-OCaml: Algorithmic Differentiation for OCaml
OCaml
Markus Mottl Unaffiliated
11:30 - 13:30
ExperienceOCaml at OCaml
Chair(s): Greta Yorsh Jane Street

Sharing experience about using OCaml in various scenarios.

11:30
30m
Talk
OCaml Under The Hood: SmartPy
OCaml
12:00
30m
Talk
A Declarative Syntax Definition for OCaml
OCaml
Luis Eduardo de Souza Amorim Delft University of Technology, Netherlands, Eelco Visser Delft University of Technology
Pre-print
12:30
30m
Talk
LexiFi Runtime Types
OCaml
Patrik Keller University of Innsbruck, Marc Lasson LexiFi
13:00
30m
Talk
Types in amber
OCaml
Paul Steckler O(1) Labs, Matthew Ryan O(1) Labs
14:00 - 15:00
Keynote IIOCaml at OCaml
Chair(s): Chris Casinghino Draper Laboratory

The recitation of the Keynote speech for those who weren’t able to attend the first one.

14:00
60m
Keynote
The OCaml Platform
OCaml
15:30 - 17:30
RecitationOCaml at OCaml
Chair(s): Chris Casinghino Draper Laboratory

Repeats Session I for those who weren’t able to attend the earlier time slot.

15:30
30m
Talk
API migration: compare transformed
OCaml
Joseph Harrison University of Kent, UK, Steven Varoumas University of Kent, Simon Thompson University of Kent, Reuben Rowe University College London
16:00
30m
Talk
OCaml-CI : A Zero-Configuration CI
OCaml
Thomas Leonard OCaml Labs, Craig Ferguson Tarides, Kate Deplaix OCaml Labs, Magnus Skjegstad Tarides and OCaml Labs, Anil Madhavapeddy OCaml Labs
16:30
30m
Talk
The final pieces of the OCaml documentation puzzle
OCaml
Jonathan Ludlam University of Cambridge, Gabriel Radanne Inria, Leo White Jane Street
17:00
30m
Talk
Parallelising your OCaml Code with Multicore OCaml
OCaml
Sadiq Jaffer Opsian and OCaml Labs, Sudha Parimala IIT Madras, KC Sivaramakrishnan IIT Madras, Tom Kelly OCaml Labs, Anil Madhavapeddy OCaml Labs
Pre-print

Call for Presentations

Scope

Presentations and discussions focus on the OCaml programming language and its community. We aim to solicit talks on all aspects related to improving the use or development of the language and its programming environment, including, for example (but not limited to):

  • compiler developments, new backends, runtime and architectures
  • practical type system improvements, such as GADTs, first-class modules, generic programming, or dependent types
  • new library or application releases, and their design rationales
  • tools and infrastructure services, and their enhancements
  • prominent industrial or experimental uses of OCaml, or deployments in unusual situations.

Presentations

Presentations will be held in the online format. Each presentation comprise a prerecorded presentation and an interactive live Q&A session after the talk. Each talk will be re-translated three times in different time zones. Session chairs and volunteers will assist the authors in preparing and casting the presentation. Each presentation will be made available through the ocaml.org website.

Submission

To submit a presentation, please register a description of the talk (about 2 pages long) at https://ocaml2020.hotcrp.com/ providing a clear statement of what will be provided by the presentation: the problems that are addressed, the solutions or methods that are proposed.

LaTeX-produced PDFs are a common and welcome submission format. For accessibility purposes, we ask PDF submitters to also provide the sources of their submission in a textual format, such as .tex sources. Reviewers may read either the submitted PDF or the text version.

Camera ready presentations

A pre-recorded versions of accepted presentation shall be provided before August, 14th. Volunteers will provide technical assistance to authors as well as provide necessary feedback and ensure that all videos match our quality standards.

Important dates

  • Friday 29th May (any time zone): Abstract submission deadline (extended)
  • Friday 17th July: Author notification
  • Friday 14th August: Camera-ready deadline
  • Friday 28th August: OCaml Workshop

ML family workshop

The ML family workshop, held on the previous day, deals with general issues of the ML-style programming and type systems, focuses on more research-oriented work that is less specific to a language in particular. There is an overlap between the two workshops, and we have occasionally transferred presentations from one to the other in the past. Authors who feel their submission fits both workshops are encouraged to mention it at submission time and/or contact the Program Chairs.

Call for Tutorials

In addition and in preparation to the workshop we plan a series of interactive tutorials addressing various aspects of the OCaml infrastructure. If you’re willing to host a tutorial that you think will be interesting to the general community, please contact the Organizing Committee (ivg@ieee.org).

Call for Volunteers

The virtual format of the conference poses new challenges and requires people with special talents and training. The Organizing Committee is seeking for members who will volunteer to fill one (or more) of the following roles:

  1. AV Editor
  2. Session Host
  3. Transcribers/Interpreter
  4. Content Manager
  5. Accessibility Chair

The roles are described in details below. We are asking prospective Organizing Committee members to contact the Committee chair (ivg@ieee.org), indicating which role(s) they are ready to take.

AV Editor

AV (Audio/Video) editors are responsible for previewing the presentations and providing help and feedback to the authors. Ideally we target for one editor per talk.

Duties

  • Preview and (if necessary) post-process or (ask the author to shoot again) the pre-recorded videos.
  • Advise authors and help in choice of software and hardware, teach how to set up the camera, light, make sure that the audio is of good quality and, in general, channel our quality guidelines.
  • Ensure that all videos are of the same quality, the audio levels are the same, and that everything is loud and clear.

Session Hosts

Session hosts will assist session chairs in streaming the pre-recorded videos as well as helping and moderating the Q&A sessions and the panel session. They will also be responsible for security and be ready to react to potential threats and wrongdoers. Since we will broadcast sessions in several time zones we need several hosts for each session.

Duties

  • Moderating the text chats
  • Controlling microphones in the video-conferencing
  • Watching for the time
  • Performing sound checks
  • Welcoming and otherwise guiding participants

Transcribers / Interpreters

We would like to have at least English transcriptions for each talk and translations to other languages are very welcome. Transcriptions enable accessibility as well as potentially increase the audience and publicity as they could be indexed by the search engines.

Duties

  • Create transcriptions for videos, potentially in other languages.

Content Manager

The content manager will be responsible for maintaining the web presence of the conference on https://ocaml.org/. We plan to have all videos available, as well as maintain a page for each submitted work.

Accessibility Chair

We are striving to make the conference accessible to everyone and we are looking for volunteers who have experience in online accessibility.

Duties

  • Helping with the selection of accessible platforms and tools​.
  • Working with attendees​ to ensure the necessary access services are included.
  • Establishing best practices ​for preparing and running accessible sessions.

Questions? Use the OCaml contact form.