WikiQA-IS: Assisted Benchmark Generation and Automated Evaluation of Icelandic Cultural Knowledge in LLMs
Paper · 2025 · Þórunn Arnardóttir, Elías Bjartur Einarsson, Garðar Ingvarsson Juto et al.
Summary
Large language models often produce confident but wrong facts, and there are few benchmarks for checking what they know about smaller cultures. This paper presents WikiQA-IS, an open-ended question-answering benchmark on Icelandic culture and history. It also releases the pipeline used to build it and an automatic way to score models on it.
GPT-4 Turbo read Icelandic Wikipedia articles and RÚV news texts from the Icelandic Gigaword corpus. For each text it wrote one question and answer pair. It also rated how good the question was and how closely the source text relates to Icelandic culture. These self-assigned ratings were used to filter the pairs. A neural Icelandic error-correction model then fixed grammar and spelling, and a native-speaker linguist reviewed part of the output.
The final set has 2,000 pairs. Model answers are graded by GPT-4o against a reference answer on a three-level scale, and the authors report strong agreement with human ratings. Across 30 tested models, closed-source systems generally beat open-weights ones, and many questions defeated every model.
The resource and the pipeline give a reusable template for building cultural-knowledge benchmarks in low-resource languages.
Key points
- Sources and generation:
- Sources were 41,569 Icelandic Wikipedia articles (at least 250 characters each) and a subset of RÚV news articles (at least 500 characters).
- Generation used gpt-4-turbo with Icelandic prompts.
- Each output carried a question_score and a document_score on a 0–1 scale.
- Only pairs scoring at least 0.7 on both were kept: about 29% of Wikipedia pairs and 20% of news pairs passed.
- Correction and review:
- A byte-level neural error-correction model for Icelandic changed 26.49% of questions and 41.99% of answers, mostly fixing noun inflection.
- In manual review, Wikipedia-based pairs were kept far more often than news-based ones (89.8% vs 36.5%).
- Judging: gpt-4o-2024-08-06 rates each answer as poor (0), fair (0.5) or excellent (1). An answer not written in Icelandic is automatically rated poor.
- Difficulty:
- 761 questions (about 38%) got no "excellent" answer from any of the 30 models.
- 488 questions got not even a "fair" answer.
- Questions about people make up 34.7% of the full set but 48.0% of the hard subset.
- Release: the dataset is released under CC BY on CLARIN-IS, in formats for BIG-bench, OpenAI-evals and LM Evaluation Harness.
Interesting ideas
- I1. The generator rates both its own question and how suitable the source text is, so weak outputs can be filtered by threshold before any human sees them.
- I2. The generation prompt forces any time reference to carry an explicit year and forbids words like "current", which keeps answers stable over time and independent of the source document.
- I3. The judge compares an answer against a reference on a coarse three-level scale, and automatically fails answers in the wrong language.
- I4. Item difficulty is measured empirically by how many of the 30 models answer each question well, which separates truly hard items from easy ones.
- I5. A dedicated grammar-correction model is run over LLM-generated text, because the generator understands the language better than it writes its morphology.
For Mova
How these ideas could serve Mova, our small open language model — its files, stages and tests:
- I1 (learn): LLM teacher tiers could return a confidence and a source-suitability score with each silver annotation, so low-scoring items are dropped before training.
- I2 (answer): when generating QA items over fables or school texts, requiring self-contained, time-anchored questions avoids items that only make sense with the passage open.
- I3 (learn): a reference-based graded score with hard-fail rules (wrong language, off-topic) could evaluate free-text answers from Mova's readers more fairly than exact string match.
- I4 (learn): counting how many witness parsers or solvers succeed per item would flag a hard subset, and also items nobody solves that may themselves be broken and need checking.
- I5 (back): generated English from the meaning graph could pass through an agreement and inflection checker driven by Mova's morphology before output.
Fields, topics and concepts
📚 Shelves 5The field of science this work belongs to (OpenAlex fields).Computer Science · 18,614 worksArtificial Intelligence · 17,965 worksArts and Humanities · 17,450 worksLanguage and Linguistics · 17,296 worksComputer Vision and Pattern Recognition · 3,486 works
🧭 Topics 2Research subjects and languages the work is about.Language models & pretraining · 3,894 worksEvaluation & benchmarks · 1,341 works
Cite
Cite as Þórunn Arnardóttir, Elías Bjartur Einarsson, Garðar Ingvarsson Juto, Þorvaldur Páll Helgason and Hafsteinn Einarsson. 2025. WikiQA-IS: Assisted Benchmark Generation and Automated Evaluation of Icelandic Cultural Knowledge in LLMs. Proceedings of the Third Workshop on Resources and Representations for Under-Resourced Languages and Domains (RESOURCEFUL-2025).
@inproceedings{arnardottir2025wikiqa,
title = {{WikiQA-IS: Assisted Benchmark Generation and Automated Evaluation of Icelandic Cultural Knowledge in LLMs}},
author = {THórunn Arnardóttir, Elías Bjartur Einarsson, Gardhar Ingvarsson Juto, THorvaldur Páll Helgason and Hafsteinn Einarsson},
booktitle = {Proceedings of the Third Workshop on Resources and Representations for Under-Resourced Languages and Domains (RESOURCEFUL-2025)},
year = {2025},
url = {https://aclanthology.org/2025.resourceful-1.13/}
}References
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