# Bigram

A bigram is an n-gram that is a 2-tuple.

**AKA:**3-gram.**Context:**- It can be a member of a Bigram Model.
- …

**Example(s):****Counter-Example(s):**- a Unigram Relation, such as: R( (
*apple*), “*This apple fell from that tree.*”) ⇒ True. - a Trigram Relation, such as: R( (
*apple fell from*), “*This apple fell from that tree.*”) ⇒ True

- a Unigram Relation, such as: R( (
**See:**Vector, Bigram Counting.

## References

### 2011

- http://en.wikipedia.org/wiki/N-gram
- An
*n*-gram of size 1 is referred to as a “unigram"; size 2 is a “bigram” (or, less commonly, a "digram"); size 3 is a “trigram"; size 4 is a "four-gram" and size 5 or more is simply called an "n-gram". Some language models built from n-grams are "(*n*− 1)-order Markov models".

- An