From Seamless to Limitless Access

David Stern

Director of Science Libraries and Information Services

Yale University

david.e.stern@yale.edu

New York, May 8 2003

Industry TrendsSearching Issues

Keywords Controlled vocabulary Citation tracking Cross-database searching

Linking issues DOI-based links (CrossRef)

“appropriate copy problem” local resolvers (sfx) Metadata-driven (enhanced) links

Standard Search/Link Model

SEARCHER INDEX LINK FULL-TEXT

Enhanced Search/Link Model

SEARCHER INDEX LINK FULL-TEXT

Database1Database2Database3

SoundImagesDatasetsWWW search enginesCitation searchesBiographiesReviewsMETADATA re-search

Searching Broadcast and Federated

Multiple simultaneous databases

• On-demand outreach to targets

Harvesting (pre-created central index)

Standard syntax conversion(s)

Limits by discipline/material type

Integrated Media type (metadata)

Normalized indexing

• vocabularies

• hierarchies

Enhanced options

Linking Standard concerns

Multiple resources (html, pdf)

Local resolvers (subscriptions)

Local subscriptions (aggregators)

Customized link “brand” (logo)

Enhanced possibilities

Customized to local options

• Local resources

• Selected added-value tools

Metadata re-searching

• Obtain additional descriptors

• Search across additional engines

Enhanced options II

Problem Information overload

Solution Additional sources searched WITH

Single search syntax

Immediate limit options before search

Navigation assistance

• Local resources identified/linked

• Relevant resources highlighted

Enhanced metadata re-searching

• Obtain additional logical relationships

Paradox introduced and solved

MetaLib (Boston College) Flashpoint (Los Alamos)

Multi-SEARCH (U Arizona)

SearchLight (CDL)

OAI (many initiatives) CogPrints

Dspace

Eprints

OAIster (Michigan)

Example broadcast and federated systems

ResearchIndex (sophisticated links)

Citebase (ranking) ARC (eprint archives)

Example linking systems

http://www.library.yale.edu/~dstern/advancedsearch.html