CLEF CheckThat! 2025 Subjectivity — Bulgarian
A CLEF CheckThat! 2025 subjectivity task (bulgarian) dataset of 691 sentences with subjectivity labels (45.2% subjective), collected by CLEF CheckThat! Lab organizers (2025). Each record contains sentence text, binary subjectivity label (SUBJ/OBJ), sentence ID, conflict resolution flag. CLEF 2025 CheckThat! subjectivity (bulgarian) provides 691 news sentences annotated for subjectivity — whether the sentence expresses opinions (SUBJ) or facts (OBJ). Suitable for subjectivity detection, opinion mining, NLP classification, news objectivity analysis, multilingual text classification.
Cite this dataset at
checkthat-2025-task1-bulgarian.echo.directory
Analytics
Topic 0
Topic 1
Topic 2
Topic 3
Topic 4
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Topic 6
Topic 7
Computed over the full corpus.
Record
- Catalog key
checkthat-2025-task1-bulgarian- Authors
- Nakov, Preslav; Barrón-Cedeño, Alberto; Da San Martino, Giovanni; CheckThat! Lab Organizers
- Year
- 2025
- Source paper
- CLEF 2025 CheckThat! Lab: Subjectivity Detection
- DOI / arXiv
- 10.1007/978-3-031-88720-8_68
- License
- Creative Commons Attribution-NonCommercial-ShareAlike 4.0 (CC BY-NC-SA 4.0) (CC-BY-NC-SA-4.0)
- Records
- 691
- Languages
- bg
- Collected
- 2025 (2020s)
- Tasks
- Subjectivity classification inferred
- Region
- Europe (inferred: from the language of the data)
Provenance
- Originally published at
- https://gitlab.com/checkthat_lab/clef2025-checkthat-lab link checked
- Hosted copy
- Mirrored on echo.directory on 2026-10-02, 164.9 KB across 1 files. Checksums in MANIFEST.json.
How to cite
BibTeX
@misc{echo2026,
title = {ECHO: Exploratory Compendium of Humanity Online},
author = {Switzer, Braden and Zafarani, Reza},
year = {2026},
url = {https://echo.directory},
note = {Syracuse University}
}
@inproceedings{checkthat2025subj,
title = {CLEF 2025 {CheckThat!} Lab: Subjectivity Detection},
author = {Nakov, Preslav and others},
booktitle = {CLEF 2025 Working Notes},
year = {2025}
} APA
Switzer, B., & Zafarani, R. (2026). ECHO: Exploratory Compendium of Humanity Online [Data repository]. Syracuse University. https://echo.directory
Nakov, P., Barrón-Cedeño, A., Da San Martino, G., & CheckThat! Lab Organizers (2025). CLEF CheckThat! 2025 Subjectivity — Bulgarian [Data set]. https://doi.org/10.1007/978-3-031-88720-8_68
MLA
Switzer, Braden, and Reza Zafarani. ECHO: Exploratory Compendium of Humanity Online. Syracuse University, 2026, echo.directory.
Nakov, Preslav, et al. CLEF CheckThat! 2025 Subjectivity — Bulgarian. 2025, doi.org/10.1007/978-3-031-88720-8_68.