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Recall the notion of the web graph from Section 19.2.1 and particularly Figure 19.2 . Our study of link analysis builds on two intuitions:
The Web as a graph
- The anchor text pointing to page B is a good description of page B.
- The hyperlink from A to B represents an endorsement of page B, by the creator of page A. This is not always the case; for instance, many links amongst pages within a single website stem from the user of a common template. For instance, most corporate websites have a pointer from every page to a page containing a copyright notice - this is clearly not an endorsement. Accordingly, implementations of link analysis algorithms will typical discount such ``internal'' links.
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