Bigramme

Définition

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Anglais

bigram

A bigram is a pair of things, but usually a pair of lexical categories. Suppose that we are concerned with two lexical categories L1 and L2. The term bigram is used in statistical NLP in connection with the conditional probability that a word will belong to L2 given that the preceding word was in L1. This probability is written Pr(L2 | L1), or more fully Prob(w[i] in L2 | w[i-1] in L1). For example, in the phrase "The flies", given that The is tagged with ART, we would be concerned with the conditional probabilities Pr(N | ART) and Pr(V | ART) given that flies can be tagged with N and V.

Source : UNWS Natural Language Processing Dictionary