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cs.LG2026
Perplexity Cannot Always Tell Right from Wrong
Petar Veličković, Federico Barbero, Christos Perivolaropoulos +2
Perplexity -- a function measuring a model's overall level of "surprise" when encountering a particular output -- has gained significant traction in recent years, both as a loss fu…
cs.LG2024★ 1 cited
Softmax is not Enough (for Sharp Size Generalisation)
Petar Veličković, Christos Perivolaropoulos, Federico Barbero +1
A key property of reasoning systems is the ability to make sharp decisions on their input data. For contemporary AI systems, a key carrier of sharp behaviour is the softmax functio…