After retiring Jeeves, Ask also retired Teoma, a search engine started in 2000 by Apostolos Gerasoulis and later acquired by Ask Jeeves.
The algorithm behind Teoma was rebranded ExpertRank: "Ask's ExpertRank algorithm provides relevant search results by identifying the most authoritative sites on the Web. With Ask search technology, it's not just about who's biggest: it's about who's best. Our ExpertRank algorithm goes beyond mere link popularity (which ranks pages based on the sheer volume of links pointing to a particular page) to determine popularity among pages considered to be experts on the topic of your search. This is known as subject-specific popularity. Identifying topics (also known as "clusters"), the experts on those topics, and the popularity of millions of pages amongst those experts -- at the exact moment your search query is conducted -- requires many additional calculations that other search engines do not perform. The result is world-class relevance that often offers a unique editorial flavor compared to other search engines."
ExpertRank is an evolution of IBM's CLEVER project, a search engine that never made it to public. "Clever attempts to ensure that the information it retrieves is useful by pointing people toward either of two classes of sites: authorities and hubs. An authority is a site to which many other sites have links, which Dom sees as implied endorsements of the site's usefulness. A hub is a site that has links to many other sites, and is therefore a potentially good reference. Clever's job is to identify the best hubs (those that link to the best authorities) and the best authorities (those that are linked to by the best hubs)."
The difference between PageRank and ExpertRank is that for ExpertRank the quality of the page is important and that quality is not absolute, but it's relative to a subject.
"Clever starts with 200 pages that are the result of an ordinary keyword search. It then adds all pages that link to, or are linked to by, one of those 200 pages. This step typically swells the set of pages to 1,000 or more. Clever initially assigns each page a hub score of one and an authority score of one. It sums up all the authority scores to get a page's hub score, and sums up all the hub scores to get a page's authority score. Then it repeat the process some five times until the system has identified the hubs that link to the top-scoring authorities and the authorities that are linked to by the top-scoring hubs."
Labels
Web Search
Gmail
Google Docs
Mobile
YouTube
Google Maps
Google Chrome
User interface
Tips
iGoogle
Social
Google Reader
Traffic Making Devices
cpp programming
Ads
Image Search
Google Calendar
tips dan trik
Google Video
Google Translate
web programming
Picasa Web Albums
Blogger
Google News
Google Earth
Yahoo
Android
Google Talk
Google Plus
Greasemonkey
Security
software download
info
Firefox extensions
Google Toolbar
Software
OneBox
Google Apps
Google Suggest
SEO Traffic tips
Book Search
API
Acquisitions
InOut
Visualization
Web Design Method for Getting Ultimate Traffic
Webmasters
Google Desktop
How to Blogging
Music
Nostalgia
orkut
Google Chrome OS
Google Contacts
Google Notebook
SQL programming
Google Local
Make Money
Windows Live
GDrive
Google Gears
April Fools Day
Google Analytics
Google Co-op
visual basic
Knowledge
java programming
Google Checkout
Google Instant
Google Bookmarks
Google Phone
Google Trends
Web History
mp3 download
Easter Egg
Google Profiles
Blog Search
Google Buzz
Google Services
Site Map for Ur Site
game download
games trick
Google Pack
Spam
cerita hidup
Picasa
Product's Marketing
Universal Search
FeedBurner
Google Groups
Month in review
Twitter Traffic
AJAX Search
Google Dictionary
Google Sites
Google Update
Page Creator
Game
Google Finance
Google Goggles
Google Music
file download
Annoyances
Froogle
Google Base
Google Latitude
Google Voice
Google Wave
Google Health
Google Scholar
PlusBox
SearchMash
teknologi unik
video download
windows
Facebook Traffic
Social Media Marketing
Yahoo Pipes
Google Play
Google Promos
Google TV
SketchUp
WEB Domain
WWW World Wide Service
chord
Improve Adsence Earning
jurnalistik
sistem operasi
AdWords Traffic
App Designing
Tips and Tricks
WEB Hosting
linux
How to Get Hosting
Linux Kernel
WEB Errors
Writing Content
award
business communication
ubuntu
unik