Définition de « surprisal » en Anglais

noun

1. (obsolete, military) A surprise attack or ambush; a sudden or unexpected assault.

2. (obsolete) A sudden coming-upon someone or something unexpectedly or unawares.

3. (obsolete) A surprising event or occurrence.

4. (obsolete) The feeling caused by being surprised; surprise, shock, amazement.

5. An information measure as equal in bits (binary digits) to the base-2 log of 1 over the probability, with the result that the number of choices equals 2ⁿ where n is the number of bits.