Reading for Week # 11

1) David Hawking , Web Search Engines:
I could not access to the article


2) Shreeves, S. L., Habing, T. O., Hagedorn, K., & Young, J. A. (2005). Current developments and future trends for the OAI protocol for metadata harvesting. Library Trends, 53(4), 576-589.

- Current Developments and Future Trends for the OAI Protocol for Metadata Harvesting
- The Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH) has been widely adopted since its initial release in 2001
- This article provides a brief overview of the OAI environment, two years out from the release of the production version of the protocol.
- It looks into some of the interesting developments within the OAI world, particularly the use of the protocol within specific communities of interest, the development of a comprehensive registry of OAI data providers, and a resolver for OAI identifiers that extends the protocol beyond its traditional use
- it documents some of the current challenges for both data and service provider
- and the article provides some of the possible future directions for the OAI protocol and community.

3) MICHAEL K. BERGMAN, “The Deep Web: Surfacing Hidden Value” http://www.press.umich.edu/jep/07-01/bergman.html- According to Michael K. Bergman:
- While a great deal may be caught in the net, there is still a wealth of information that is deep, and therefore, missed
- Traditional search engines create their indices by spidering or crawling surface Web page
- raditional search engines cannot "see" or retrieve content in the deep Web
- Deep Web sources store their content in searchable databases that only produce results dynamically in response to a direct request. But a direct query is a "one at a time" laborious way to search. BrightPlanet's search technology automates the process of making dozens of direct queries simultaneously using multiple-thread technology and thus is the only search technology, so far, that is capable of identifying, retrieving, qualifying, classifying, and organizing both "deep" and "surface" content.
- Search engines obtain their listings in two ways: Authors may submit their own Web pages, or the search engines "crawl" or "spider" documents by following one hypertext link to another.