Abstract: A system and method includes translating a web page into a structured tree including a set of nodes. The system receives an annotation tag based on a selection of a portion of the web page. The system translates the annotation tag into a markup. The system attaches the markup to a first node of the nodes. The system applies the markup to at least one parent node in the structured tree that is related to the first node. The system outputs a new version of the web page in a source format, including the markup.

Abstract: Disclosed systems and methods enable a user to train an extraction model by receiving a starting document and input from the user indicating tagged data from the starting document and creating an extraction model from the tagged data. Disclosed systems and methods also include identifying groups of additional documents based on a location of the starting document and displaying each of the groups to the user in order to receive a selection of at least one group from the user. Disclosed systems and methods also include applying the extraction model to the at least one group by evaluating the additional documents associated with the at least one group based on the extraction model to determine a confidence score for each of the additional documents, determining a document with a low confidence score, and displaying the particular document to the user to receive additional tagged data.