Automatic context sensitive language correction using an internet corpus particularly for small keyboard devices

A computer-assisted language correction system comprising:

• contextual feature-sequence (CFS) functionality operative to generate a plurality of contextual feature-sequences based on an input sentence, said contextual feature sequences comprising at least one of N-grams, skip-grams, switch-grams, co-occurrences, and combinations thereof;
• an alternatives generator, generating on the basis of said a input sentence a text-based representation providing multiple alternatives for each of a plurality of words in the sentence, said multiple alternatives including non-contextual corrections for each of said plurality of words, said multiple alternatives including alternatives based on keyboard keys location proximity;
• a selector for selecting among at least said multiple alternatives for each of said plurality of words in the sentence, said selector including context based scoring functionality operative to rank said multiple alternatives, based at least partly on contextual feature-sequence frequencies of occurrences in an internet corpus, for each of the plurality of contextual feature-sequences;
• and
• a correction generator operative to provide a correction output based on selections made by said selector.