the.com/perplexity
The exact mathematical measure of how confused a machine is by your next word.
means The state of being utterly puzzled or bewildered, unable to make sense of something tangled and unclear.
from From Latin perplexus, meaning 'entangled' or 'interwoven' — the past participle of perplectere, built from per- ('thoroughly') and plectere ('to weave, to braid,' a cousin of the root behind 'plait' and 'complex'). To be perplexed, then, is to feel your thoughts knotted up like badly tangled threads. It arrived in English through Old French in the late Middle Ages, carrying that sense of mental entanglement intact.
- AI metric
- Lower perplexity means a model predicts text better
- From latin
- Perplexus meant entangled or interwoven
- Information theory
- It equals two raised to the entropy
- Named startup
- An AI search engine borrowed the term
- Perfect score
- Perplexity of one means flawless prediction
perplexity ai search engine — ai company founded 2023 that answers questions with cited sources, competing with google
perplexity measure nlp — metric in language models measuring how surprised a model is by test data, lower is better