37.2889, Confs: SemEval-2027 Task 3: Semantic Change Across Multiple Time Periods (Online)

[The LINGUIST List]

LINGUIST List: Vol-37-2889. Fri Sep 11 2026. ISSN: 1069 - 4875.

Subject: 37.2889, Confs: SemEval-2027 Task 3: Semantic Change Across Multiple Time Periods (Online)

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Date: 09-Sep-2026
From: Nina Tahmasebi [semeval-2027 at changeiskey.org]
Subject: SemEval-2027 Task 3: Semantic Change Across Multiple Time Periods


Call for Participation for SemEval-2027 Task 3: Semantic Change Across
Multiple Time Periods
Short Title: SemEval-2027 Task 3
Theme: Semantic Change Across Multiple Time Periods

Date: 10-Jan-2027 - 31-Jan-2027
Location: Online
Meeting URL: https://www.changeiskey.org/event/2027-semeval/

Linguistic Field(s): Computational Linguistics; Historical
Linguistics; Semantics; Text/Corpus Linguistics
Subject Language(s): Dutch (nld, dutc1256)
                     English (eng, stan1293)
                     Italian (ita, ital1282)
                     Russian (rus, russ1263)
                     Spanish (spa, stan1288)
                     Swedish (swe, swed1254)

Submission Deadline: 31-Jan-2027

We are pleased to announce the Call for Participation for SemEval-2027
Task 3: Semantic Change Across Multiple Time Periods.
SemEval-2027 Task 3 investigates how word meanings evolve across
multiple historical time periods. While previous shared tasks have
focused on comparisons between just two time points, this task extends
the setting to ten time periods, using a multilingual benchmark of
approximately 120,000 human annotations, allowing participants to
model the evolution of individual word senses over time.
The benchmark spans six languages annotated across ten time periods
ranging roughly 1880–2023: Swedish, English, Italian, Spanish, Dutch,
and Russian (140 words in total).
The task consists of two subtasks:
- Subtask 1: Diachronic Word Sense Induction – discover how word
meanings evolve over time without predefined sense inventories.
Evaluated via two tracks: Track 1a, Diachronic Sense Assignment
(BCubed F1), and Track 1b, Sense Dynamics (Spearman's rank correlation
over Jensen-Shannon Divergence).
- Subtask 2: Hypothesis-Driven Change Detection – given a target sense
definition, identify which usages express that sense. Evaluated via
Average F1-score.
Register now to participate:
https://www.codabench.org/competitions/17510/
Important Dates:
- Training data ready: 1 September 2026
- Evaluation period: 10–31 January 2027
       - Subtask 1: 10–21 January 2027
       - Subtask 2: 22–31 January 2027
- Paper submission: February 2027
- Notification to authors: March 2027
- Camera-ready due: April 2027
- SemEval workshop: Summer 2027 (co-located with a major NLP
conference)
Additional Information:
- Task website: https://www.changeiskey.org/event/2027-semeval/
- Mailing list:
https://groups.google.com/d/forum/semeval2027-task3-SCxMTP
Organizers:
Nina Tahmasebi, Pierluigi Cassotti, Felix Morger, Lucia Siciliani,
Eduardo Calò, Pablo Mosteiro, Stefano De Pascale, and Mariia Fedorova



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