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Juri Opitz

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#machine learning Preprint Sep 2026

Embedding Models Measure in Peculiar Ways

Analysis indicates that embedding representations of physical measurements are strongly influenced by superficial string similarity, and recalibration of similarity does not substantially improve the alignment.

Juri Opitz, Andrianos Michail · 0 citations
#artificial intelligence Preprint Jun 2026

Attention Calibration for Position-Fair Dense Retrieval

A strength coefficient that interpolates between uncalibrated and fully equalized attention, together with an efficient implementation that reduces peak calibration memory overhead from 5-7 GiB to under 1 MiB, and a variant that preserves the pooling token's self-attention mass and redistributes only the remaining mass...

Andrianos Michail, Elias Schuhmacher, Juri Opitz et al. · 0 citations
#natural language process... Preprint Jun 2026

ALEE: Any-Language Evaluation of Embeddings via English-Centric Minimal Pairs

A large-scale empirical study across a diverse set of embedding models and 275+ languages spanning three parallel datasets, exposing persistent gaps in cross-lingual semantic representation that track language prevalence in training resources and subword tokenization.

Andrianos Michail, Stylianos Psychias, Michelle Wastl et al. · 0 citations

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