Google recently filed patent named "Information retrieval based on historical data". This patent contains points related to algorithm Google uses/will use, to rank web pages.
The major part of the patent deals with links. As we know that google relies on links in a great way to rank web pages. Historical information is the new entrant other then the page rank, anchor text, and number of links. Lets have a look at some of the points mentioned in the patent (it is not actual patent lines but my understanding between the lines of the patent):
# Discovery dates of the links with anchor text are recorded. # Appearance and disappearance of link could be monitored # Growth rate of the links could also be monitored. # Rate at which links appear and disappear could be monitored as well # Change in anchor text with time could be recorded. # Permanent links will get high rating then non-permanent one. # Appearance of links, slow and constant gets a higher rating. # Multiple anchor text for a site will be given higher preference. # Sudden link growth could be considered as Spam. # New website with large number of links would be considered somewhat Spam # Links from pages that is updated regularly will be considered more important. # Old pages with fresh links will be considered as fresh.
Nerd seo expert
posted by: SEOGuru (reply)
post date: 05.29.05 (8:24 am)
While Googles new patent is interesting a serious perusal of it should convince experienced indivuals that not all or even the majority of the hundreds of concepts in the patent are viable.
This is not the first patent Google has filed, and there is really nothing new in it so why patent it all?
IMO there are two possible reasons, first to gain control over a vast range of potentially interesting technologies, and secondly perhaps to obfuscate the real technologies in use.
Before blithely assuming that all or a part of the patent is actually in use by Google, you need much more investigation than just reading the patent.
