DLS 2020
Sun 15 - Fri 20 November 2020 Online Conference
co-located with SPLASH 2020

The 16th Dynamic Languages Symposium (DLS) at SPLASH 2020 is the premier forum for researchers and practitioners to share research and experience on all aspects on dynamic languages.

See the call for papers for more information.

Keynote

Croquet: A Unique Collaboration Architecture
Dr. Vanessa Freudenberg
Chief Architect, Croquet Corp

The next generation of our connected world calls for a low-latency, low-bandwidth, low-development-effort platform for synchronized interactions. The platform must also enforce privacy from the ground up, in particular in anticipation of an always-on Augmented Reality future.

In traditional synchronization approaches, computations are performed on a server and results are continuously distributed to clients. Croquet moves all computation to the clients. A lightweight “reflector” server directs the clients to advance time in sync, and ensures that any external event is incorporated by all clients at exactly the same point in the computation, leading to synchronized, bit-identical state. All data is end-to-end encrypted by the clients; the server stores and distributes data, but can never peek inside.

Croquet’s programming model separates the synchronized computation of “models” from individually computed “views”. This means the world is the same for everyone, but the display of the world can be tailored to each device and user. Models and views communicate using a publish/subscribe mechanism that routes certain events via the reflector. This model/view separation and pub/sub communication is a major departure from the previous, proxy-based Smalltalk implementation of Croquet. It retains the ability for live programming by atomically incorporating new code.

Vanessa is the chief architect of the current JavaScript-based implementation. She will give an overview of the system, highlight challenges in designing the API, and explore the far-reaching implications of the shift from server to client.

Dates
Tracks
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Wed 18 Nov

Displayed time zone: Central Time (US & Canada) change

11:00 - 12:20
2SAS / DLS 2020 at SPLASH-III +12h
Chair(s): Matthew Flatt University of Utah, USA, David Pichardie Univ Rennes, ENS Rennes, IRISA
11:00
40m
Talk
Static Resource Analysis at ScaleInvited Talk
SAS
I: Ezgi Çiçek Facebook London
File Attached
11:40
40m
Keynote
Croquet: A Unique Collaboration Architecture (Keynote)Keynote
DLS 2020
Vanessa Freudenberg Croquet Corp
Media Attached
13:00 - 14:20
3SAS / DLS 2020 at SPLASH-III +12h
Chair(s): Patrick Cousot New York University, Michael Homer Victoria University of Wellington
13:00
20m
Research paper
Exact and Linear-Time Gas-Cost Analysis
SAS
Ankush Das Carnegie Mellon University, Shaz Qadeer Novi, USA
Pre-print
13:20
20m
Talk
Python 3 Types in the Wild: A Tale of Two Type Systems
DLS 2020
Ingkarat Rak-amnouykit Rensselaer Polytechnic Institute, Daniel McCrevan Rensselaer Polytechnic Institute, Ana Milanova Rensselaer Polytechnic Institute, Martin Hirzel IBM Research, Julian Dolby IBM Research, USA
Link to publication DOI Pre-print Media Attached
13:40
20m
Research paper
On Multi-Language Abstraction: Towards a Static Analysis of Multi-Language Programs
SAS
Samuele Buro Università degli Studi di Verona, Roy Crole University of Leicester, Isabella Mastroeni University of Verona, Italy
File Attached
14:00
20m
Talk
Wasm/k: Delimited Continuations for WebAssembly
DLS 2020
Donald Pinckney Northeastern University, Arjun Guha University of Massachusetts at Amherst, Yuriy Brun University of Massachusetts Amherst
Link to publication DOI Pre-print Media Attached
15:00 - 16:20
4DLS 2020 / SAS at SPLASH-III +12h
Chair(s): Antoine Miné Sorbonne Université, Jeremy G. Siek Indiana University, USA
15:00
20m
Research paper
Memory-Efficient Fixpoint ComputationArtifact
SAS
Sung Kook Kim University of California, Davis, Arnaud J. Venet Facebook, Aditya V. Thakur University of California, Davis
Pre-print Media Attached
15:20
20m
Talk
Dynamic Pattern Matching with Python
DLS 2020
Tobias Kohn University of Cambridge, UK, Guido van Rossum Python Software Foundation, Gary Brandt Bucher, II Research Affiliates, LLC, Talin , Ivan Levkivskyi Dropbox Ireland
Link to publication DOI Media Attached
15:40
20m
Research paper
Simple and Efficient Computation of Minimal Weak Control ClosureArtifact
SAS
Abu Naser Masud Malardalen University
Media Attached File Attached
16:00
20m
Talk
Sound, Heuristic Type Annotation Inference for Ruby
DLS 2020
Milod Kazerounian University of Maryland, College Park, Brianna M. Ren University of Maryland, Jeffrey S. Foster Tufts University
Link to publication DOI Pre-print Media Attached
17:00 - 18:20
5DLS 2020 / SAS at SPLASH-III +12h
Chair(s): Patrick Cousot New York University, Sukyoung Ryu
17:00
20m
Research paper
Abstract Neural Networks
SAS
Matthew Sotoudeh University of California, Davis, Aditya V. Thakur University of California, Davis
Pre-print Media Attached
17:20
20m
Talk
Amalgamating Different JIT Compilations in a Meta-tracing JIT Compiler Framework
DLS 2020
Yusuke Izawa Tokyo Institute of Technology, Hidehiko Masuhara Tokyo Institute of Technology
Link to publication DOI Pre-print Media Attached
17:40
20m
Research paper
Probabilistic Lipschitz Analysis of Neural NetworksArtifact
SAS
Ravi Mangal Georgia Institute of Technology, Kartik Sarangmath Georgia Institute of Technology, Aditya Nori , Alessandro Orso Georgia Tech
Pre-print Media Attached
18:00
20m
Talk
Pricing Python Parallelism: A Dynamic Language Cost Model for Heterogeneous Platforms
DLS 2020
Dejice Jacob University of Glasgow, UK, Phil Trinder University of Glasgow, Jeremy Singer Glasgow University
Link to publication DOI Pre-print Media Attached
19:00 - 20:00
1SAS at SPLASH-III
Chair(s): Bor-Yuh Evan Chang University of Colorado Boulder & Amazon
19:00
40m
Talk
Cost Analysis of Smart Contracts via Parametric Resource AnalysisInvited Talk
SAS
I: Manuel Hermenegildo IMDEA Software Institute and T.U. of Madrid
Media Attached File Attached
19:40
20m
Research paper
A Library Modeling Language for the Static Analysis of C ProgramsArtifact
SAS
Abdelraouf Ouadjaout Sorbonne Université, Antoine Miné Sorbonne Université
Media Attached File Attached
23:00 - 00:20
2DLS 2020 / SAS at SPLASH-III
Chair(s): Matthew Flatt University of Utah, USA, Mihaela Sighireanu LSV, ENS Paris-Saclay
23:00
40m
Talk
Static Resource Analysis at ScaleInvited Talk
SAS
I: Ezgi Çiçek Facebook London
File Attached
23:40
40m
Keynote
Croquet: A Unique Collaboration Architecture (Keynote)Keynote
DLS 2020
Vanessa Freudenberg Croquet Corp
Media Attached

Thu 19 Nov

Displayed time zone: Central Time (US & Canada) change

01:00 - 02:20
3DLS 2020 / SAS at SPLASH-III
Chair(s): Michael Homer Victoria University of Wellington, Francesco Ranzato University of Padova
01:00
20m
Research paper
Exact and Linear-Time Gas-Cost Analysis
SAS
Ankush Das Carnegie Mellon University, Shaz Qadeer Novi, USA
Pre-print
01:20
20m
Talk
Python 3 Types in the Wild: A Tale of Two Type Systems
DLS 2020
Ingkarat Rak-amnouykit Rensselaer Polytechnic Institute, Daniel McCrevan Rensselaer Polytechnic Institute, Ana Milanova Rensselaer Polytechnic Institute, Martin Hirzel IBM Research, Julian Dolby IBM Research, USA
Link to publication DOI Pre-print Media Attached
01:40
20m
Research paper
On Multi-Language Abstraction: Towards a Static Analysis of Multi-Language Programs
SAS
Samuele Buro Università degli Studi di Verona, Roy Crole University of Leicester, Isabella Mastroeni University of Verona, Italy
File Attached
02:00
20m
Talk
Wasm/k: Delimited Continuations for WebAssembly
DLS 2020
Donald Pinckney Northeastern University, Arjun Guha University of Massachusetts at Amherst, Yuriy Brun University of Massachusetts Amherst
Link to publication DOI Pre-print Media Attached
03:00 - 04:20
4SAS / DLS 2020 at SPLASH-III
Chair(s): Shigeru Chiba The University of Tokyo, Caterina Urban École normale supérieure
03:00
20m
Research paper
Memory-Efficient Fixpoint ComputationArtifact
SAS
Sung Kook Kim University of California, Davis, Arnaud J. Venet Facebook, Aditya V. Thakur University of California, Davis
Pre-print Media Attached
03:20
20m
Talk
Dynamic Pattern Matching with Python
DLS 2020
Tobias Kohn University of Cambridge, UK, Guido van Rossum Python Software Foundation, Gary Brandt Bucher, II Research Affiliates, LLC, Talin , Ivan Levkivskyi Dropbox Ireland
Link to publication DOI Media Attached
03:40
20m
Research paper
Simple and Efficient Computation of Minimal Weak Control ClosureArtifact
SAS
Abu Naser Masud Malardalen University
Media Attached File Attached
04:00
20m
Talk
Sound, Heuristic Type Annotation Inference for Ruby
DLS 2020
Milod Kazerounian University of Maryland, College Park, Brianna M. Ren University of Maryland, Jeffrey S. Foster Tufts University
Link to publication DOI Pre-print Media Attached
05:00 - 06:20
5SAS / DLS 2020 at SPLASH-III
Chair(s): Xavier Rival INRIA/CNRS/ENS Paris, Sukyoung Ryu
05:00
20m
Research paper
Abstract Neural Networks
SAS
Matthew Sotoudeh University of California, Davis, Aditya V. Thakur University of California, Davis
Pre-print Media Attached
05:20
20m
Talk
Amalgamating Different JIT Compilations in a Meta-tracing JIT Compiler Framework
DLS 2020
Yusuke Izawa Tokyo Institute of Technology, Hidehiko Masuhara Tokyo Institute of Technology
Link to publication DOI Pre-print Media Attached
05:40
20m
Research paper
Probabilistic Lipschitz Analysis of Neural NetworksArtifact
SAS
Ravi Mangal Georgia Institute of Technology, Kartik Sarangmath Georgia Institute of Technology, Aditya Nori , Alessandro Orso Georgia Tech
Pre-print Media Attached
06:00
20m
Talk
Pricing Python Parallelism: A Dynamic Language Cost Model for Heterogeneous Platforms
DLS 2020
Dejice Jacob University of Glasgow, UK, Phil Trinder University of Glasgow, Jeremy Singer Glasgow University
Link to publication DOI Pre-print Media Attached
09:00 - 10:00
6SAS at SPLASH-III +12h
Chair(s): Mihaela Sighireanu LSV, ENS Paris-Saclay
09:00
40m
Talk
Polynomial Invariants for Affine ProgramsInvited Talk
SAS
I: James Worrell University of Oxford
File Attached
09:40
20m
Research paper
Termination of Polynomial Loops
SAS
Florian Frohn Max Planck Institute for Informatics, Marcel Hark RWTH Aachen University, Germany, Jürgen Giesl RWTH Aachen University
Pre-print Media Attached File Attached
11:00 - 12:20
7SAS / DLS 2020 at SPLASH-III +12h
Chair(s): Tim Felgentreff Oracle Labs, Potsdam, Kedar Namjoshi Nokia Bell Labs
11:00
20m
Research paper
Interprocedural Shape Analysis Using Separation Logic-based Transformer Summaries
SAS
Hugo Illous CEA & INRIA / ENS Paris, Matthieu Lemerre CEA LIST, France, Xavier Rival INRIA/CNRS/ENS Paris
File Attached
11:20
20m
Talk
DelayRepay: Delayed Execution for Kernel Fusion in Python
DLS 2020
John Magnus Morton University of Edinburgh, Kuba Kaszyk University of Edinburgh, Lu Li Linköping University, Jiawen Sun University of Edinburgh, Christophe Dubach McGill University, Michel Steuwer The University of Edinburgh, Murray Cole University of Edinburgh, UK, Michael F. P. O'Boyle University of Edinburgh
Link to publication DOI Pre-print Media Attached
11:40
20m
Research paper
Stratified Guarded First-order Transition Systems
SAS
Christian Müller Technische Universität München, Saarland University, Helmut Seidl Technische Universität München
File Attached
12:00
20m
Talk
Sampling Optimized Code for Type Feedback
DLS 2020
Olivier Flückiger Northeastern University, Andreas Wälchli University of Bern, Sebastián Krynski Czech Technical University, National University of Quilmes, Jan Vitek Northeastern University / Czech Technical University
Link to publication DOI Pre-print Media Attached
13:00 - 14:20
8SAS / DLS 2020 at SPLASH-III +12h
Chair(s): Tim Felgentreff Oracle Labs, Potsdam, Samir Genaim Universidad Complutense de Madrid
13:00
20m
Research paper
Formal framework for reasoning about the precision of dynamic analysis
SAS
Mila Dalla Preda University of Verona, Italy, Roberto Giacobazzi University of Verona and IMDEA Software Institute, Niccolò Marastoni University of Verona
File Attached
13:20
20m
Research paper
Farkas-Based Tree Interpolation
SAS
Sepideh Asadi PhD Student, Martin Blicha , Antti Hyvärinen , Grigory Fedyukovich Florida State University, Natasha Sharygina USI Lugano, Switzerland
Pre-print
13:40
40m
Talk
Framework-Aware Debugging with Stack Tailoring
DLS 2020
Matteo Marra Vrije Universiteit Brussel, Guillermo Polito Univ. Lille, CNRS, Centrale Lille, Inria, UMR 9189 - CRIStAL - Centre de Recherche en Informatique Signal et Automatique de Lille, Elisa Gonzalez Boix Vrije Universiteit Brussel, Belgium
Link to publication DOI Pre-print Media Attached
15:00 - 16:20
9SAS at SPLASH-III +12h
Chair(s): Kwangkeun Yi Seoul National University, South Korea
15:00
20m
Research paper
Counterexample- and Simulation-Guided Floating-Point Loop Invariant SynthesisArtifact
SAS
Anastasiia Izycheva Technical University of Munich, Eva Darulova MPI-SWS, Helmut Seidl Technische Universität München
Pre-print Media Attached
15:40
20m
Research paper
Predicate Abstraction and CEGAR for nuHFL(Z) Validity Checking
SAS
Naoki Iwayama University of Tokyo, Japan, Naoki Kobayashi University of Tokyo, Japan, Ryota Suzuki , Takeshi Tsukada Chiba University, Japan
File Attached
17:00 - 18:20
10SAS at SPLASH-III +12h
Chair(s): David Pichardie Univ Rennes, ENS Rennes, IRISA
17:00
40m
Talk
Static analysis for privacy-preserving artificial intelligenceInvited Talk
SAS
21:00 - 22:00
6SAS at SPLASH-III
Chair(s): Mihaela Sighireanu LSV, ENS Paris-Saclay
21:00
40m
Talk
Polynomial Invariants for Affine ProgramsInvited Talk
SAS
I: James Worrell University of Oxford
File Attached
21:40
20m
Research paper
Termination of Polynomial Loops
SAS
Florian Frohn Max Planck Institute for Informatics, Marcel Hark RWTH Aachen University, Germany, Jürgen Giesl RWTH Aachen University
Pre-print Media Attached File Attached
23:00 - 00:20
7DLS 2020 / SAS at SPLASH-III
Chair(s): Mihaela Sighireanu LSV, ENS Paris-Saclay
23:00
20m
Research paper
Interprocedural Shape Analysis Using Separation Logic-based Transformer Summaries
SAS
Hugo Illous CEA & INRIA / ENS Paris, Matthieu Lemerre CEA LIST, France, Xavier Rival INRIA/CNRS/ENS Paris
File Attached
23:20
20m
Talk
DelayRepay: Delayed Execution for Kernel Fusion in Python
DLS 2020
John Magnus Morton University of Edinburgh, Kuba Kaszyk University of Edinburgh, Lu Li Linköping University, Jiawen Sun University of Edinburgh, Christophe Dubach McGill University, Michel Steuwer The University of Edinburgh, Murray Cole University of Edinburgh, UK, Michael F. P. O'Boyle University of Edinburgh
Link to publication DOI Pre-print Media Attached
23:40
20m
Research paper
Stratified Guarded First-order Transition Systems
SAS
Christian Müller Technische Universität München, Saarland University, Helmut Seidl Technische Universität München
File Attached
00:00
20m
Talk
Sampling Optimized Code for Type Feedback
DLS 2020
Olivier Flückiger Northeastern University, Andreas Wälchli University of Bern, Sebastián Krynski Czech Technical University, National University of Quilmes, Jan Vitek Northeastern University / Czech Technical University
Link to publication DOI Pre-print Media Attached

Fri 20 Nov

Displayed time zone: Central Time (US & Canada) change

01:00 - 02:20
8SAS / DLS 2020 at SPLASH-III
Chair(s): Helmut Seidl Technische Universität München
01:00
20m
Research paper
Formal framework for reasoning about the precision of dynamic analysis
SAS
Mila Dalla Preda University of Verona, Italy, Roberto Giacobazzi University of Verona and IMDEA Software Institute, Niccolò Marastoni University of Verona
File Attached
01:20
20m
Research paper
Farkas-Based Tree Interpolation
SAS
Sepideh Asadi PhD Student, Martin Blicha , Antti Hyvärinen , Grigory Fedyukovich Florida State University, Natasha Sharygina USI Lugano, Switzerland
Pre-print
01:40
40m
Talk
Framework-Aware Debugging with Stack Tailoring
DLS 2020
Matteo Marra Vrije Universiteit Brussel, Guillermo Polito Univ. Lille, CNRS, Centrale Lille, Inria, UMR 9189 - CRIStAL - Centre de Recherche en Informatique Signal et Automatique de Lille, Elisa Gonzalez Boix Vrije Universiteit Brussel, Belgium
Link to publication DOI Pre-print Media Attached
03:00 - 04:20
9SAS at SPLASH-III
Chair(s): Jerome Feret INRIA Paris
03:00
20m
Research paper
Counterexample- and Simulation-Guided Floating-Point Loop Invariant SynthesisArtifact
SAS
Anastasiia Izycheva Technical University of Munich, Eva Darulova MPI-SWS, Helmut Seidl Technische Universität München
Pre-print Media Attached
03:40
20m
Research paper
Predicate Abstraction and CEGAR for nuHFL(Z) Validity Checking
SAS
Naoki Iwayama University of Tokyo, Japan, Naoki Kobayashi University of Tokyo, Japan, Ryota Suzuki , Takeshi Tsukada Chiba University, Japan
File Attached

Call for Papers

The 16th Dynamic Languages Symposium (DLS) at SPLASH 2020 is the premier forum for researchers and practitioners to share research and experience on all aspects on dynamic languages.

DLS 2020 invites high quality papers reporting original research and experience related to the design, implementation, and applications of dynamic languages. Areas of interest include, but are not limited to,

  • innovative language features
  • innovative implementation techniques
  • innovative applications
  • development environments and tools
  • experience reports and case studies
  • domain-oriented programming
  • late binding, dynamic composition, and run-time adaptation
  • reflection and metaprogramming
  • software evolution
  • language symbiosis and multi-paradigm languages
  • dynamic optimization
  • interpretation
  • just-in-time and ahead-of-time compilation
  • soft/optional/gradual typing
  • hardware support
  • educational approaches and perspectives
  • semantics of dynamic languages
  • frameworks and languages for the Cloud and the IoT

Submission Details

Submissions must neither be previously published nor under review at other events. DLS 2020 uses a lightweight double-blind, two-phase reviewing process.

Papers are assumed to be in one of the following categories:

       Research Papers:
              describe work that advances the current state of the art

       Experience Papers:
              describe insights gained from substantive practical
              applications that should be of a broad interest

       Dynamic Pearls:
              describe a known idea in an appealing way to remind the
              community and capture a reader’s interest

The program committee will evaluate each paper based on its relevance, significance, clarity, and originality. The paper category needs to be indicated during submission, and papers are judged accordingly.

Papers are to be submitted electronically in PDF format. Submissions must be in the ACM SIGPLAN conference acmart format, 10 point font, and should not exceed 12 pages. Please see full details in the instructions for authors available at:

https://conf.researchr.org/home/dls-2020#Instructions-for-Authors

DLS 2020 will run a two-phase reviewing process to help authors make their final papers the best that they can be. Accepted papers will be published in the ACM Digital Library and will be freely available for one month, starting two weeks before the event.

Important Deadlines

Abstract Submission (optional): July 2, 2020 [was: June 4]
Paper Submission: July 9, 2020 [was: June 11]
First Phase Notification: August 7, 2020
Revisions Due: September 4, 2020
Final Notifications: September 18, 2020
Camera Ready (estimated): October 10, 2020

All deadlines are 23:59 AoE (UTC-12h).

AUTHORS TAKE NOTE: The official publication date is the date the proceedings are made available in the ACM Digital Library. This date may be up to two weeks prior to the first day of your conference. The official publication date affects the deadline for any patent filings related to published work.

Accepted Papers

Title
Amalgamating Different JIT Compilations in a Meta-tracing JIT Compiler Framework
DLS 2020
Link to publication DOI Pre-print Media Attached
Croquet: A Unique Collaboration Architecture (Keynote)Keynote
DLS 2020
Media Attached
DelayRepay: Delayed Execution for Kernel Fusion in Python
DLS 2020
Link to publication DOI Pre-print Media Attached
Dynamic Pattern Matching with Python
DLS 2020
Link to publication DOI Media Attached
Framework-Aware Debugging with Stack Tailoring
DLS 2020
Link to publication DOI Pre-print Media Attached
Pricing Python Parallelism: A Dynamic Language Cost Model for Heterogeneous Platforms
DLS 2020
Link to publication DOI Pre-print Media Attached
Python 3 Types in the Wild: A Tale of Two Type Systems
DLS 2020
Link to publication DOI Pre-print Media Attached
Sampling Optimized Code for Type Feedback
DLS 2020
Link to publication DOI Pre-print Media Attached
Sound, Heuristic Type Annotation Inference for Ruby
DLS 2020
Link to publication DOI Pre-print Media Attached
Wasm/k: Delimited Continuations for WebAssembly
DLS 2020
Link to publication DOI Pre-print Media Attached

Submitted papers need to conform to the formatting instructions. Submissions that violate these instructions may be rejected without review at the discretion of the Program Chair.

DLS 2020 uses a lightweight double-blind review process. Authors must omit their names and affiliations in their paper submissions.

Submission Site

Please take a moment to read the instructions below before using the submission site. After acceptance, the camera ready versions will be collected by Conference Publishing Consulting.

Concurrent Submissions

Papers must describe unpublished work that is not currently submitted for publication elsewhere as described by SIGPLAN’s Republication Policy. Submitters should also be aware of ACM’s Policy and Procedures on Plagiarism.

Format

Submissions should use the ACM SIGPLAN Conference acmart format, sigplan sub-format, 10 point font. All submissions should be in PDF format. If you use LaTeX or Word, please use the provided ACM SIGPLAN acmart templates. Author–year and numeric citation styles are both acceptable.

Note that by default the SIGPLAN Conference Format templates produce papers in 9 point font. If you are formatting your paper using LaTeX, you will need to set the 10pt option in the \documentclass command: \documentclass[10pt,sigplan]{acmart}. If you are formatting your paper using Word, you may wish to use the provided Word template that supports this font size.

For reviewing, please include page numbers in your submission with the LaTeX \settopmatter{printfolios=true} command.

Please also ensure that your submission is legible when printed on a black and white printer. In particular, please check that colors remain distinct and font sizes are legible.

Page Limit

To ensure that papers stay focused on their core contributions, papers are limited to 12 pages and 10pt including bibliographic references and appendices. For the second phase, the page limit is 14 pages including bibliographic references.

Second-Phase Revisions

DLS 2020 uses a two-phase review system to provide authors with extra support and an opportunity to revise submissions. The extent of revisions is limited by the available time of about 4 weeks, so the program committee will use the two-phase process only for mandatory revisions that can be completed in that time.

To facilitate reviewing, we ask the author to submit their revisions accompanied by:

  • a latexdiff to the original submission, or a similarly annotated document
  • as well as a high-level description of the made changes and a discussion of the points raised by the reviews

For the second phase, the page limit is 14 pages, including bibliographic references.

Publication (Digital Library Early Access Warning)

AUTHORS TAKE NOTE: The official publication date is the date the proceedings are made available in the ACM Digital Library. This date may be up to two weeks prior to the first day of the conference. The official publication date affects the deadline for any patent filings related to published work.