Spatial and Temporal Digital Libraries
Steve Maslennikov and
Chan Yee Seng

Contents
Motivation
Search Interfaces
Name Entitie Extraction
Combination of Search Interfaces
Conclusion

Motivation
Search in classical Digital Library (DL): keyword, classification, metadata
What if we want to search for photographs, maps, major historical events?
Search DL using characterizing attribute
Brings us to our topic…

Motivation
Digital library is a good source for information
Problem: how to access?
Classical IR models don’t work well with long documents and other types of information (e.g. maps)

Search Interfaces
Keyword

Search Interfaces
Navigational Classification Hierarchy
Digital Library for Earth System Education
(DLESE)

Search Interfaces

Search Interfaces

Search Interfaces
Timeline
Perseus Project

Search Interfaces

Search Interfaces
Informative Map-interface
Perseus Project

Search Interfaces

Search Interfaces

Search Interfaces
Navigational Map-interface
Alexandria Digital Library (ADL)

Search Interfaces

Search Interfaces

Importance of NE Extraction

Before Generalization

After Generalization

Combination of Search Interfaces
map, classification, time period
Map provides navigation and specifies constraints
Visual information about categories
NE extraction adds new dimensions (DATE, LOC, NAME etc.)

Conclusion
Search interface should be intuitive
Visual techniques show the content of very long documents with different types of information

Some URLs
http://www.dlese.org/dds/index.jsp
http://webclient.alexandria.ucsb.edu/
http://www.perseus.tufts.edu/