Camera-Ready Submission Guidelines – ONTOBRAS 2026

ONTOBRAS 2026 and WTDO 2026

Authors of papers accepted to ONTOBRAS 2026 and WTDO 2026 must submit the camera-ready version of their paper together with the duly completed and signed CEUR-WS Author Agreement.

The submission deadline is August 24, 2026.

The submission must be made through EasyChair, in a single ZIP file.

1. Files to be submitted

The ZIP file must contain:

  1. the CEUR-WS Author Agreement, duly completed and signed by hand;
  2. the camera-ready paper in PDF format;
  3. the source files of the camera-ready paper, which must be:
    • an ODT file, when using the OpenOffice template; or
    • the complete Overleaf/LaTeX project used to generate the PDF.

Source files in DOC or DOCX format will not be accepted.

The ZIP file must be submitted through EasyChair by August 24, 2026. The file must be named paperX.zip, where X corresponds to the submission number in EasyChair.

2. Author Agreement

Authors must select the Author Agreement that corresponds to the characteristics of their paper.

Two templates are available:

  • AUTHOR-AGREEMENT (NTP): for papers that do not include third-party copyrighted material. This is the option applicable to most papers.
  • AUTHOR-AGREEMENT (TP): for papers that include some third-party copyrighted material. In this case, a copy of the copyright holder’s permission to use the material must also be provided.

The Author Agreement templates are available in a ZIP file for download at https://www.inf.ufrgs.br/ontobras/wp-content/uploads/2026/08/ceur-author-agreement-ccby.zip.

The ZIP file also includes a completed example with instructions, which should be consulted before completing and signing the document.

Signing the Author Agreement

CEUR-WS requires the Author Agreement to be signed by hand, using a pen on a printed copy of the document.

Therefore:

  • complete the Author Agreement;
  • print the document;
  • sign it by hand using a pen;
  • scan or photograph the signed document;
  • submit the scanned copy in PDF or JPG format;
  • the scanned file must be named according to the pattern AUTHOR-AGREEMENT-paperX.pdf, where X corresponds to the submission number in EasyChair.

Further information about the handwritten signature requirement is available in the CEUR-WS guidelines:
https://ceur-ws.org/HOWTOSUBMIT.html#FAQ-HAND-SIGNATURE

For additional instructions on the Author Agreement:
https://ceur-ws.org/HOWTOSUBMIT.html#AUTHORAGREEMENT

Completing the Author Agreement

Before submission, make sure that all fields in the Author Agreement have been completed, including:

  • paper title;
  • authors’ names;
  • corresponding author’s details;
  • event name;
  • editors’ names;
  • location and date;
  • handwritten signature.

The title provided in the Author Agreement must be exactly the same as the title used in the camera-ready paper.

3. Preparing the camera-ready paper

All papers must use the single-column CEUR-ART template.

The templates for Microsoft Office Word, OpenOffice, and LaTeX are available at:

https://www.inf.ufrgs.br/ontobras/wp-content/uploads/2026/08/CEUR-Template-1col_ONTOBRAS_2026.zip

The template is available in ODT or LaTeX/Overleaf format, according to the requirements for preparing the proceedings.

Before submission, authors must carefully check the following items:

  • Do not insert page numbers in the paper.
  • The footer must be adjusted to display the correct copyright year and event identification:
    • use © 2026 Copyright and the following identification:
    • Proceedings of the 19th Seminar on Ontology Research in Brazil (ONTOBRAS 2026) and 10th Doctoral and Masters Consortium on Ontologies (WTDO 2026), September 23, 2026.
  • The footer must include the e-mail address and ORCID of each author, following the format provided in the CEUR-ART template.
  • Papers written in Portuguese must include:
    • abstract and keywords in Portuguese;
    • abstract and keywords in English, inserted immediately after the abstract and keywords in Portuguese, using the same formatting.
  • Authors must comply with the page limit corresponding to the paper category:
    • Full paper: up to 12 pages;
    • Short paper: up to 6 pages.
  • References are excluded from the page limit.
  • ONTOBRAS 2026 adopts the CEUR-WS Policy on AI-Based Support Tools. All papers must include a section titled Generative AI Declaration.
  • Guidelines on acceptable uses and examples of declarations are available at: https://ceur-ws.org/GenAI/Policy.html

4. Presentation and Poster Templates

Authors must use the official templates provided for presentations and posters at ONTOBRAS 2026 and WTDO 2026.

[Download the presentation template] → https://www.inf.ufrgs.br/ontobras/wp-content/uploads/2026/08/Presentation-Template-Ontobras-2026.pptx

[Download the poster template] → https://www.inf.ufrgs.br/ontobras/wp-content/uploads/2026/08/Poster-Template-Ontobras-2026.pptx

Additional information about presentation duration and organization will be provided to authors according to the event program.

5. Important Notice

Submissions that do not comply with these guidelines will be returned to the authors for correction.

We ask authors to carefully prepare and check all files, as the timely publication of the proceedings depends on receiving complete camera-ready submissions that comply with CEUR-WS requirements.

If you have any questions regarding the camera-ready submission, please contact:

ONTOBRAS 2026: ontobras2026@easychair.org
WTDO 2026: wtdos2026@easychair.org

6. Checklist before submission

Before submitting the ZIP file through EasyChair, make sure that:

  • the correct Author Agreement has been selected;
  • all fields in the Author Agreement have been completed;
  • the Author Agreement has been printed and signed by hand;
  • the signed Author Agreement has been scanned in PDF or JPG format;
  • the Author Agreement file has been named according to the pattern AUTHOR-AGREEMENT-paperX.pdf;
  • the camera-ready paper is in PDF format;
  • the source file is in ODT format or corresponds to the complete LaTeX/Overleaf project;
  • no DOC or DOCX source files have been submitted;
  • the paper uses the single-column CEUR-ART template;
  • the paper does not contain page numbers;
  • the footer is correct;
  • the e-mail address and ORCID of all authors are included;
  • papers written in Portuguese include an abstract and keywords in both Portuguese and English;
  • the page limit for the paper category has been respected;
  • the Generative AI Declaration section has been included before the References section;
  • all files have been included in a single ZIP file named paperX.zip.