13. The method as set forth in claim 12 , wherein the at least one validation criterion comprises: validate conditional upon a span of the linked text fragments being greater than a validation fraction threshold of the total span of the extracted text fragments.
12. A method for identifying a table of contents in a document, the method comprising: extracting text fragments from the document; identifying (i) a contiguous group of the text fragments as table of content entries and (ii) a different group of the text fragments as linked text fragments linked with corresponding table of content entries, wherein a small portion of the identified table of content entries comprise holes that do not have associated linked text fragments, a ratio of the number of the holes to the number of linked table of content entries being a user-selectable parameter that is less than about 0.2; and validating the identified table of contents entries and linked text fragments based on at least one validation criterion related to distribution of the linked text fragments.