TRENDS, CHALLENGES, AND OPPORTUNITIES

Online Sources & Searching

Database Searching

Understanding database structureIndexing methods- implications for search

capabilities, results, and relevancy ranking Indexed fields Term indexing Relational indexing Term-document frequency Term-database frequency

Database Searching

Improving search results Semantic linking Query expansion Faceted searching

Internet Search Engines

Structure and function of indexingSearch capabilities Page rankings

Search engine optimization- black and white hatSearch engine comparisons- size, overlap,

functionality http://infopeople.org/search/chart.html http://blindsearch.fejus.com/

Internet Search Engines

Keeping up www.infopeople.org http://philbradley.typepad.com/phil_bradleys_weblog/ http://searchenginewatch.com/

The Invisible Web

“All of the information available on the World Wide Web that cannot be found using general-purpose search engines” (Devine and Egger-Sider, 2001).

Represents the largest part of the online information resources (may be as much as 500x greater than the visible web)

Is the fastest growing part of the web

The Invisible Web

General-purpose search engines do not index: Database fields/ subscription materials Dynamic pages Forms Pages not linked to other pages Grey literature Very current material Purposely excluded sites

Accessing the Invisible Web

General subject directories Librarians Internet Index (www.lii.org) Open Directory Project (www.dmoz.org) Infomine: Scholarly Internet Resource Collections (

http://infomine.ucr.edu) About (www.about.com) BUBL catalog of Internet Resources (http://bubl.ac.uk)

Accessing the Invisible Web

Databases THOMAS (http://thomas.loc.gov) PubMed (www.ncbi.nlm.nih.gov/pubmed) ERIC (www.eric.ed.gov/) OAIster (www.oaister.org)

Invisible Web Search Engines Complete Planet (www.completeplante.com) IncyWincy (www.incywincy.com) Turbo10 (http://turbo10.com)

Accessing the Invisible Web

Vertical Search Engines Scirus scientific (http://scirus.com) Science.gov (www.science.gov) Science Research (www.scienceresearch.com)

Niche Search Engines Furniture (http://furniturestylesearch.com) Guide Star (www.guidestar.org) Technorati (http://technorati.com)

LOOKING TO THE FUTURE

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It trends & Challenges

Trends and Challenges12

Systems and Methods Catalog- Next generation catalogs

http://sccl.bibliocommons.com/ http://cat.danburylibrary.org/

Discovery-to-delivery tools Customization/personalization

Devices Smartphones/handhelds/ebooks Location-based services (privacy issues) Pushing content to mobile devices Designing (webpages, apps, etc) for mobile devices

Trends and Challenges13

Resources, Publishing, & Services Libraries as publishers Digitization opportunities and challenges OpenURL (connecting to accessible material) Metadata harvesting Metasearching

http://www.dogpile.com BC Library Holmes (http://

library.bc.edu/F?local_base=BC_CATALOG) Automated Reference Semantic Web

Hakia (http://hakia.com) Gaming Technology

Trends and Challenges14

Social Media and User-Generated Content Preservation of new media (end-user content) Citizen journalism Participation- e.g. tagging library content

Trends and Challenges15

Policy Issues Digital divide Privacy is dead (?) Open source/content/access Copyright Self-publishing Openness, sharing content DRM