digitalpoint
May 6th 2006, 4:50 pm
Has anyone run across this before? I happened to run across it randomly and it has lots of interesting stuff...
For example:
http://www.google.com/librariancenter/articles/0512_01.html
Ranking Results
Now we have the set of pages that contain the user's query somewhere, and it's time to rank them in terms of relevance. Google uses many factors in ranking. Of these, the PageRank algorithm might be the best known. PageRank evaluates two things: how many links there are to a web page from other pages, and the quality of the linking sites. With PageRank, five or six high-quality links from websites such as www.cnn.com and www.nytimes.com would be valued much more highly than twice as many links from less reputable or established sites.
But we use many factors besides PageRank. For example, if a document contains the words "civil" and "war" right next to each other, it might be more relevant than a document discussing the Revolutionary War that happens to use the word "civil" somewhere else on the page. Also, if a page includes the words "civil war" in its title, that's a hint that it might be more relevant than a document with the title "19th Century American Clothing." In the same way, if the words "civil war" appear several times throughout the page, that page is more likely to be about the civil war than if the words only appear once.
For example:
http://www.google.com/librariancenter/articles/0512_01.html
Ranking Results
Now we have the set of pages that contain the user's query somewhere, and it's time to rank them in terms of relevance. Google uses many factors in ranking. Of these, the PageRank algorithm might be the best known. PageRank evaluates two things: how many links there are to a web page from other pages, and the quality of the linking sites. With PageRank, five or six high-quality links from websites such as www.cnn.com and www.nytimes.com would be valued much more highly than twice as many links from less reputable or established sites.
But we use many factors besides PageRank. For example, if a document contains the words "civil" and "war" right next to each other, it might be more relevant than a document discussing the Revolutionary War that happens to use the word "civil" somewhere else on the page. Also, if a page includes the words "civil war" in its title, that's a hint that it might be more relevant than a document with the title "19th Century American Clothing." In the same way, if the words "civil war" appear several times throughout the page, that page is more likely to be about the civil war than if the words only appear once.