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Re: Computing n-grams

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  • Subject: [mg89051] Re: Computing n-grams
  • From: Seth Chandler <sethchandler at>
  • Date: Sat, 24 May 2008 03:56:59 -0400 (EDT)
  • References: <g11r2s$aaa$>

On May 21, 12:53 pm, "Coleman, Mark" <Mark.Cole... at>
> Greetings,
> Imagine one has a list such as {a,b,c,d,e,f,g}. I'm trying to find an
> efficient way in Mathematica to compute then-gramsof the list. That is, for
> n=2, then-gramsare all the lists of length 2 consisting of consecutive
> elements, e.g.,
> {a,b},{b,c},{c,d},{d,e},...
> While for n=3,
> {a,b,c},{b,c,d},{c,d,e},..., and so on.
> As I understand it, the built-in Mathematica commands such as Subsets or
> Permutations compute all possible list of size n, without regard to the
> order of the list elements.
> Thanks,
> Mark

There are two Demonstrations that deal with n-grams that may be of
interest to you and that have code for finding n-grams. They are

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