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cs.CL2026
Benchmarking the Benchmarks: Testing the Predictive Validity of Commonsense Benchmarks
Ine Gevers, Walter Daelemans
Predicting LLM's capabilities on real-world tasks is essential, yet the extent to which performance on commonsense benchmarks predicts downstream performance remains underspecified…
cs.CL2026
Decomposing Factual Sycophancy in Language Models: How Size and Instruction Tuning Shape Robustness
Victor De Marez, Luna De Bruyne, Walter Daelemans
Factual sycophancy occurs when a language model abandons a correct, verifiable answer under social pressure. Because a flip occurs only when pressure toward a false answer exceeds…