surprisal
/sə(ɹ)ˈpɹaɪzəl/ noun
Forms surprisals
- noun (obsolete, military) A surprise attack or ambush; a sudden or unexpected assault.
- noun (obsolete) A sudden coming-upon someone or something unexpectedly or unawares.
- noun (obsolete) A surprising event or occurrence.
- noun (obsolete) The feeling caused by being surprised; surprise, shock, amazement.
- noun 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.
Synonyms
Etymology
(information measure): Defined by Myron Tribus in the 1961 book Thermostatics and Thermodynamics.
Webster’s 1913
- noun The act of surprising, or state of being surprised; surprise.
Etymology [See Surprise, n.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “surprisal”, CC BY-SA 4.0. Details