13. The system of claim 12 , the term score depending, at least in part, on a number of uni-grams in the term and a number of sentences in which the term appears, the sentence score depending, at least in part, on a length of a sentence measured in uni-grams and a position of a sentence in a paragraph.
13. The system of claim 12 , the term score depending, at least in part, on a number of uni-grams in the term and a number of sentences in which the term appears, the sentence score depending, at least in part, on a length of a sentence measured in uni-grams and a position of a sentence in a paragraph. 14. The system of claim 13 , where the dominant topic logic computes an initial term vector and an initial sentence vector, computes a term eigenvector and a sentence eigenvector using an iterative process applied to the initial term vector and the initial sentence vector, and computes a term-sentence matrix eigenvalue from the term eigenvector and the sentence eigenvector.