The Libraries of Purdue University
Weather information
Address and zip code information
National Postal Address and Zip Code Server
Hypertext Webster's Dictionary from Carnegie-Mellon University
ELECTRONIC MAGAZINES (E-Zines)...
Educause publications (particularly Edupage) are very informative
Scout Report, primarily for researchers and educators
WEBster -- The E-Zine for the World-Wide Web
US Government has done great job of getting useful information onto World-Wide Web
Some examples...
U.S. Government Resources via the FedWorld Information Network
Too time-consuming to search throughout the WWW for information on a topic
Can use one of the many available online Search Engines
Allow you to search for information in many different ways
Some engines search titles or headers of documents on Internet
Others search documents themselves
Others just search other indexes or directories
There are two types of processes for supporting searches...
"Submit something along with key terms and we will include it in our index"
Creators of documents submit URL and terms for indexing: George Patton -- Patton, World War II, Third Army, tanks
Harvest Information Discovery and Access System, University of Colorado -- searches other indexes
CUI W3 catalog (University of Geneva, Switzerland) searches through directories (summaries) of other Web documents
Continuously running program (robot, crawler, worm, spider) pursuing hyper-links throughout Internet
Start with set of documents. Identify new places to explore by looking at outbound links. Visit those links. Index most useful terms.
Lycos project at Carnegie-Mellon
"Lycos" comes from arachnid family Lycosidae -- large ground spiders, very speedy and active at night, catching their prey by pursuit rather than in a web
Lycos has database of over 50 million Web pages
Receives about 4 million visits a day
Lycos -- receives about 4 million visits a day
Created by Dr. Michael Mauldin, Carnegie-Mellon University in 1994
Yahoo -- receives about 6 million visits a day
Created by Stanford graduate students Jerry Yang and David Filo in 1994
Name "Yahoo" is either corruption of "YangFilo" or "Yet Another Hierarchical Officious Oracle"
InfoSeek -- receives about 4 million visits a day
MetaCrawler calls several other search engines and reports their collective results