1	Spatial and Temporal Digital Libraries Steve Maslennikov and Chan Yee Seng
2	Contents Motivation Search Interfaces Name Entitie Extraction Combination of Search Interfaces Conclusion
3	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…
4	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)
5	Search Interfaces Keyword
6	Search Interfaces Navigational Classification Hierarchy Digital Library for Earth System Education (DLESE)
7	Search Interfaces
8	Search Interfaces
9	Search Interfaces Timeline Perseus Project
10	Search Interfaces
11	Search Interfaces Informative Map-interface Perseus Project
12	Search Interfaces
13	Search Interfaces
14	Search Interfaces Navigational Map-interface Alexandria Digital Library (ADL)
15	Search Interfaces
16	Search Interfaces
17	Importance of NE Extraction
18	Before Generalization
19	After Generalization
20	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.)
21	Conclusion Search interface should be intuitive Visual techniques show the content of very long documents with different types of information
22	Some URLs http://www.dlese.org/dds/index.jsp http://webclient.alexandria.ucsb.edu/ http://www.perseus.tufts.edu/