Author

Anna Korhonen

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#human-computer interacti... Jul 2026

Personality Without Persons? A Psychometric Critique of Big Five Testing in Large Language Models

It is demonstrated that Big Five inventories do not measure a construct equivalent to human personality in LLMs, highlighting the need for evaluation frameworks that are specifically designed and validated for LLMs, rather than transferring human psychological constructs without first establishing their validity.

Kim Zierahn, Cristina Cachero, Anna Korhonen et al. · arXiv.org · 0 citations

#natural language process... May 2026

Human Label Variation as Stable Signal: Learning Annotator-Specific Explanation Behavior via Cross-Annotator Preference Optimization

Overall, the results show that HLV can be learned as annotator-specific label-explanation behavior, suggesting a path toward scalable explanation-based annotation grounded in annotator histories rather than labels alone.

Beiduo Chen, Pingjun Hong, Ziyun Zhang et al. · arXiv.org · 0 citations

Preprint Jul 2026

Lower-Resource, Higher Scores: Language Bias in LLM Evaluators

LLM evaluators (trained reward models and prompted LLM-as-a-Judge) are routinely validated via pairwise accuracy. In a multilingual setting, this operates under the premise that high pairwise accuracy implies reliable, language-neutral scoring. We show that this assumption does not hold. We conduct experiments with sem...

Yijie Zhou, Lucas Resck, Zheng Hui et al. · 1 citation