8. The method of claim 1 , wherein the generating of a document index comprises: computing a similarity between each layout block in the provided document and each representative block; and generating a document index for each provided document based on the computed similarities.
8. The method of claim 1 , wherein the generating of a document index comprises: computing a similarity between each layout block in the provided document and each representative block; and generating a document index for each provided document based on the computed similarities. 14. The method of claim 8 , wherein the computing of the similarity between each layout block in a provided document and each representative block comprises: generating a tuple for each layout block and a tuple for each representative block, each of the tuples comprising location information for the respective block and at least one attribute value for the respective block; and computing a distance measure between the layout block tuple and the representative block tuple.