1. In a grammar checking system, a system for establishing a correct lexical entry for a word in a sentence to permit unambiguous dictionary lookup of said word by identifying if said word is intrinsically capitalized comprising: pre-processing means for providing a modified training corpus having words that are not proper nouns or intrinsically capitalized words converted to lower case even if they are at the beginning of a sentence; means for generating two versions of said sentence in which said word appears in each version in capitalized and uncapitalized form respectively; means coupled to said modified training corpus for establishing which of said two versions is the more likely; and, means responsive to said two versions for determining by said more likely version of said sentence if said word is an intrinsically capitalized word.
1. In a grammar checking system, a system for establishing a correct lexical entry for a word in a sentence to permit unambiguous dictionary lookup of said word by identifying if said word is intrinsically capitalized comprising: pre-processing means for providing a modified training corpus having words that are not proper nouns or intrinsically capitalized words converted to lower case even if they are at the beginning of a sentence; means for generating two versions of said sentence in which said word appears in each version in capitalized and uncapitalized form respectively; means coupled to said modified training corpus for establishing which of said two versions is the more likely; and, means responsive to said two versions for determining by said more likely version of said sentence if said word is an intrinsically capitalized word. 4. The system of claim 1, wherein each of said versions has a corresponding parts of speech sequence and wherein said determining means includes means for establishing the probability that each of said versions is correct based on the probability of the parts of speech sequence for each version being correct, means for selecting that version which has the higher parts of speech sequence probability, and means for establishing a lexical entry based on the capitalized or uncapitalized form of the word which exists in the version which has the highest parts of speech sequence probability.