Online Sources & Searching

wrendeceitInternet and Web Development

Oct 21, 2013 (3 years and 10 months ago)

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TRENDS, CHALLENGES, AND
OPPORTUNI TI ES

Online Sources & Searching

Database Searching


Understanding database structure


Indexing 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 indexing


Search capabilities


Page rankings


Search engine optimization
-

black and white hat


Search 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
)

LOOKI NG TO THE FUTURE

11

It trends & Challenges

Trends and Challenges

12


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 Challenges

13


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 Challenges

14


Social Media and User
-
Generated Content


Preservation of new media (end
-
user content)


Citizen journalism


Participation
-

e.g. tagging library content

Trends and Challenges

15


Policy Issues


Digital divide


Privacy is dead (?)


Open source/content/access


Copyright


Self
-
publishing


Openness, sharing content


DRM