Structural document classification

A method of classifying documents. The method comprises providing a document mapping classifying dataset comprising document feature datasets, each one of the document feature datasets documenting document features of one of a plurality of documents, each one of the documents is associated with a structurality level and classified as related to one of a plurality of database specific categories, extracting a current document feature dataset from a document, performing an analysis of each of at least some of the document feature datasets to identify a similarity to the current document feature dataset while adjusting a dynamic similarity threshold according to a respective the structurality level of an associated document from the documents, selecting one of the documents according to the similarity, and classifying the current document as a member of a respective the database specific category of the selected document.