- bigram frequency
- частота встречаемости [появления] биграмм (в тексте).
English-Russian cryptological dictionary . 2014.
Смотреть что такое "bigram frequency" в других словарях:
Bigram — Bigrams are groups of two written letters, two syllables, or two words, and are very commonly used as the basis for simple statistical analysis of text. They are used in one of the most successful language models for speech recognition. [Michael… … Wikipedia
Frequency analysis — In cryptanalysis, frequency analysis is the study of the frequency of letters or groups of letters in a ciphertext. The method is used as an aid to breaking classical ciphers.this is wrong is based on the fact that, in any given stretch of… … Wikipedia
Letter frequency — The frequency of letters in text has often been studied for use in cryptography, and frequency analysis in particular. No exact letter frequency distribution underlies a given language, since all writers write slightly differently. Linotype… … Wikipedia
Cryptanalysis of the Enigma — enabled the western Allies in World War II to read substantial amounts of secret Morse coded radio communications of the Axis powers that had been enciphered using Enigma machines. This yielded military intelligence which, along with that from… … Wikipedia
n-gram — Not to be confused with engram. In the fields of computational linguistics and probability, an n gram is a contiguous sequence of n items from a given sequence of text or speech. The items in question can be phonemes, syllables, letters, words or … Wikipedia
Playfair cipher — The Playfair cipher or Playfair square is a manual symmetric encryption technique and was the first literal digraph substitution cipher. The scheme was invented in 1854 by Charles Wheatstone, but bears the name of Lord Playfair who promoted the… … Wikipedia
Letter frequencies — The frequency of letters in text has often been studied for use in cryptography, and frequency analysis in particular. No exact letter frequency distribution underlies a given language, since all writers write slightly differently. Linotype… … Wikipedia
Language model — A statistical language model assigns a probability to a sequence of m words P(w 1,ldots,w m) by means of a probability distribution.Language modeling is used in many natural language processing applications such as speech recognition, machine… … Wikipedia
Rotor machine — In cryptography, a rotor machine is an electro mechanical device used for encrypting and decrypting secret messages. Rotor machines were the cryptographic state of the art for a brief but prominent period of history; they were in widespread use… … Wikipedia
German submarine U-505 — U 505 is a Type IXC U boat of the Kriegsmarine that was captured on 4 June 1944 by United States Navy Task Group 22.3 (TG 22.3). Codebooks and other secret materials from U 505 assisted Allied code breaking operations. U 505 was the first warship … Wikipedia
Chinesische Schriftzeichen — Chinesische Schrift Schrifttyp Logographisch Sprachen Chinesisch Japanisch Offiziell in China Taiwan Japan Korea Singapur Abgeleitete Kanji … Deutsch Wikipedia