9. A computer system including at least one computer storage media having computer-executable components embodied thereon for performing a method for extracting data content items from web pages, the computer-executable components comprising: a receiving component configured for receiving, utilizing a computing device, a plurality of web pages, each web page having at least one data content item associated therewith; a Document Object Model (DOM) tree generating component configured for generating, utilizing the computing device, a DOM tree associated with one or more of the received web pages; a labeling component configured for labeling, utilizing the computing device, at least one node associated with a generated DOM tree in accordance with a received labeling indication; a comparing component configured for comparing, utilizing the computing device, a first DOM tree having at least one labeled node associated therewith a second DOM tree; and an extracting component configured for extracting, utilizing the computing device, at least one data content item associated with the second DOM tree in accordance with the at least one labeled note associated with the first DOM tree.
9. A computer system including at least one computer storage media having computer-executable components embodied thereon for performing a method for extracting data content items from web pages, the computer-executable components comprising: a receiving component configured for receiving, utilizing a computing device, a plurality of web pages, each web page having at least one data content item associated therewith; a Document Object Model (DOM) tree generating component configured for generating, utilizing the computing device, a DOM tree associated with one or more of the received web pages; a labeling component configured for labeling, utilizing the computing device, at least one node associated with a generated DOM tree in accordance with a received labeling indication; a comparing component configured for comparing, utilizing the computing device, a first DOM tree having at least one labeled node associated therewith a second DOM tree; and an extracting component configured for extracting, utilizing the computing device, at least one data content item associated with the second DOM tree in accordance with the at least one labeled note associated with the first DOM tree. 14. The computer system of claim 9 , wherein the comparing component is further configured for measuring the top-down distance between the first DOM tree and the second DOM tree.