17. A computer program product, comprising a non-transitory computer-readable medium having a computer-readable program code embodied therein, the computer-readable program code adapted to be executed by one or more processors to implement a method comprising: generating a plurality of word pairs, each word pair comprising a word from a first digitized document, and a corresponding word from a second digitized document; computing for each word pair first location information for the word that indicates a location of the word in the first digitized document relative to other words in the first digitized document; computing for each word pair second location information for the corresponding word that indicates a location of the corresponding word in the second digitized document relative to other words in the second digitized document; comparing the first and second location information; and creating one or more classes responsive to the comparison to classify digitized documents similar to the first digitized document, and to classify digitized documents similar to the second digitized document.
17. A computer program product, comprising a non-transitory computer-readable medium having a computer-readable program code embodied therein, the computer-readable program code adapted to be executed by one or more processors to implement a method comprising: generating a plurality of word pairs, each word pair comprising a word from a first digitized document, and a corresponding word from a second digitized document; computing for each word pair first location information for the word that indicates a location of the word in the first digitized document relative to other words in the first digitized document; computing for each word pair second location information for the corresponding word that indicates a location of the corresponding word in the second digitized document relative to other words in the second digitized document; comparing the first and second location information; and creating one or more classes responsive to the comparison to classify digitized documents similar to the first digitized document, and to classify digitized documents similar to the second digitized document. 18. The computer program product of claim 17 wherein the method comprises: if the comparison indicates locations of words in the first digitized document are the same as locations of corresponding words in the second digitized document, determining that the first and second digitized documents should be in a same class; and upon the determination that the first and second digitized documents should be in the same class, creating a class to classify documents similar to the first and second digitized documents.