Resources Contact Us Home
Generating document templates that are robust to structural variations

Image Number 2 for United States Patent #7668942.

A template or wrapper tree for a document such as a web page is generalized from the bottom up (from leaf toward root of a logical tree structure of the template). At a given level in the tree, sub-trees are clustered and the clustered sub-trees are generalized, and the process is repeated at a next higher level in the tree, resulting in a generalized template or wrapper tree. This can be done by generating a nested pattern regular expression based on the sub-tree clusters, merging sub-trees based on the nested pattern regular expression, and then replacing sub-trees in a tree-based regular expression of the template or wrapper at the given level with the merged sub-trees. This process is repeated at a next higher level of the tree (progressing from leaf towards root) until the wrapper or tree-based regular expression that represents the template is fully generalized.

  Recently Added Patents
Charged particle source with multiple selectable particle emitters
Morphinan compounds
High gradient lens for charged particle beam
Maize hybrid X95C382
Method for the analysis of solid objects
Dielectric insulation medium
Polar nematic compounds
  Randomly Featured Patents
Rotary internal combustion engine
Multi-rotor ceiling fan
Ibimethylenoxy containing liquid crystal compounds
Rotor bush assembly in fluid machines
Multicomponent polyurethane-block copolymer-polymer blends
Automatic transmission for transverse engine of front-drive automotive vehicle
Device for elastically stabilizing vertebral bodies
Clear medical packaging
Optical engine architectures
System and method for address correction of electronic messages