Unit 12: Retrieving information on the World Wide Web

1.Sullivan, Danny. (2003). Search Engine Watch. Review 2 short pieces: “How Do Search Engines Work?” at http://searchenginewatch.com/webmasters/article.php/2168031 and “How Search Engines Rank Web Pages” at http://searchenginewatch.com/webmasters/article.php/2167961>. (Date accessed: 8/19/2005)

- This website talks about how the search engine works.
- There are two types of search engine which are crawler-based search engines and human-powered directories

- crawler-based search engines: such as Google, create their listings automatically. They "crawl" or "spider" the web, then people search through what they have found.
- Human-Powered Directories: A human-powered directory, such as the Open Directory, depends on humans for its listings. You submit a short description to the directory for your entire site, or editors write one for sites they review. A search looks for matches only in the descriptions submitted.


- Also it talks about how Search Engines Rank Web Pages: the search engine will sort through the millions of pages it knows about and present you with ones that match your topic. The matches will even be ranked, so that the most relevant ones come first.

2)Drabenstott, K.M. (2001). Web Search Strategy Development. Online, (25) 4: 18-24. (Available online through Pitt E-Journal http://ug4fn7ck2h.search.serialssolutions.com/ )

i tried to access this site but it does not work .

3) Blachman, Nancy (n.d.) Google Guide. Review 2 sections listed under "Printable Versions" - I: Query Input and II: Understanding Results. < http://www.googleguide.com/toc.html > (Date Accessed: 10/20/2004).Note: This will help with the assignment!

It is very helpful and informative site. I like it . it teach you how to use Google and answer your all your guestion that related to Google

Muddiest point for unit 8

I am still do not understand how one table can have two primary keys?

Unit 11

Unit 11: Retrieving information in Digital Libraries:

1.Subject-based Information Retrieval within Digital Libraries Employing LCSHs

"In this article, an effort is made to exploit the explicit and implicit semantic expressiveness of subject headings conforming to the LCSH guidelines, in favor of more efficient subject-based, information retrieval modules within digital libraries."