Validating aggregate documents

A non-transitory computer readable medium storing instructions executable by a computing system including at least one computing device, wherein execution of the instructions implements a method for validating an aggregate document comprising:

• generating an instance signature for a first instance of a data page retrieved for inclusion in the aggregate document;
• comparing the instance signature to a baseline signature associated with a second instance of the data page;
• calculating a similarity value in response to the comparing, the similarity value indicating a degree of similarity between the first instance and the second instance of the data page;
• and
• determining whether to delete or bypass the data page in the aggregate document based on the similarity value.

A system for validating an aggregate document comprising:

• a computer system including at least one computing device, the computing system configured to:
• generate an instance signature for a first instance of a data page retrieved for inclusion in the aggregate document;
• compare the instance signature to a baseline signature associated with a second instance of the data page;
• calculate a similarity value in response to the comparing, the similarity value indicating a degree of similarity between the first instance and the second instance of the data page;
• and
• determine whether to delete or bypass the data page in the aggregate document based on the similarity value.