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<div style="direction: ltr; font-family: Aptos; font-size: 12pt; color: black;"><span style="font-family: Calibri, Helvetica, sans-serif; text-transform: none;">We apologize for possible cross-posting.</span><span style="font-family: Menlo, Monaco, "Courier New", monospace; color: rgb(0, 0, 0);"><br>
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Call for Participants: OAEI 2026 Campaign co-organized with the 21st International Workshop on Ontology Matching</div>
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https://oaei.ontologymatching.org/2026/</div>
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The Ontology Alignment Evaluation Initiative (OAEI) invites researchers, developers, and practitioners to take part in its 2026 Campaign. Since 2004, OAEI has been an international effort to evaluate ontology matching technologies. We welcome both seasoned
participants and newcomers to join us in this year's evaluation.</div>
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Why Participate?</div>
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<span style="color: rgb(4, 81, 165);">-</span><span style="color: rgb(0, 0, 0);"> Comprehensive Benchmarking: Test your system against a wide variety of real-world and synthetic matching tasks. Gain objective, comparable results that highlight your system's
strengths and identify areas for improvement.</span></div>
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<span style="color: rgb(4, 81, 165);">-</span><span style="color: rgb(0, 0, 0);"> Diverse and Challenging Tracks: The 2026 campaign offers an expanded set of tracks that reflect current research trends and application needs: bio-medical ontology matching (with
a focus on machine learning-based approaches); complex ontology matching; link discovery, as well as general TBox/schema matching and instance/schema matching.</span></div>
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<span style="color: rgb(4, 81, 165);">-</span><span style="color: rgb(0, 0, 0);"> Visibility and Publication: Participants are expected to submit a system paper for the proceedings of the 21st Ontology Matching Workshop, co-located with ISWC 2026. These papers
are not peer-reviewed but are reviewed by OAEI organizers, ensuring a record of your participation and a description of your system.</span></div>
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How to Participate</div>
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<span style="color: rgb(4, 81, 165);">-</span><span style="color: rgb(0, 0, 0);"> Register Your Tool: Complete the mandatory registration form (requires a Google account and a valid email) by August 7th.</span></div>
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<span style="color: rgb(4, 81, 165);">-</span><span style="color: rgb(0, 0, 0);"> Prepare and Wrap Your System: Follow the detailed wrapping and submission instructions provided on the OAEI 2026 website for the tracks you wish to enter.</span></div>
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<span style="color: rgb(4, 81, 165);">-</span><span style="color: rgb(0, 0, 0);"> Test and Submit: We strongly encourage you to test your system early during the execution phase to identify and resolve any issues. Submit your tool and alignments via the appropriate
forms by the stated deadlines.</span></div>
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<span style="color: rgb(4, 81, 165);">-</span><span style="color: rgb(0, 0, 0);"> Prepare Your Paper: Write a paper (up to 8 pages using the CEUR template).</span></div>
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Key Dates (Tentative)</div>
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<span style="color: rgb(4, 81, 165);">-</span><span style="color: rgb(0, 0, 0);"> June 30 (extended to July 7): Preliminary datasets are released.</span></div>
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<span style="color: rgb(4, 81, 165);">-</span><span style="color: rgb(0, 0, 0);"> July 31 (extended to August 7): Preparation phase ends; final datasets are made available. Mandatory tool registration closes.</span></div>
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<span style="color: rgb(4, 81, 165);">-</span><span style="color: rgb(0, 0, 0);"> August 31: Execution phase ends; final versions of tools are due (via the submission form for most tracks).</span></div>
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<span style="color: rgb(4, 81, 165);">-</span><span style="color: rgb(0, 0, 0);"> September 22: Alignment submission deadline (only for tools requiring substantial hardware or software resources).</span></div>
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<span style="color: rgb(4, 81, 165);">-</span><span style="color: rgb(0, 0, 0);"> September 30: Evaluation phase ends; results are published.</span></div>
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<span style="color: rgb(4, 81, 165);">-</span><span style="color: rgb(0, 0, 0);"> October 14: Preliminary version of system papers due.</span></div>
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<span style="color: rgb(4, 81, 165);">-</span><span style="color: rgb(0, 0, 0);"> October 2526: 21st Ontology Matching Workshop (co-located with ISWC 2026).</span></div>
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<span style="color: rgb(4, 81, 165);">-</span><span style="color: rgb(0, 0, 0);"> November 12: Final version of system papers due.</span></div>
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For more information and the links for registration and submission of your tools, please follow the link: </div>
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https://oaei.ontologymatching.org/2026/#schedule</div>
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