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					                Alexandria Digital Library Project




ALEXANDRIA DIGITAL LIBRARY
         PROJECT


Larry Carver  James Frew  Greg Janée
Mike Goodchild  Linda Hill  Terry Smith



      www.alexandria.ucsb.edu
                               Alexandria Digital Library Project

Outline
   Alexandria Digital Library Project (ADLP)
     History
     Goals, activities, partners

   Distributed DL supporting georeferenced access
     Research and development issues
     Operational collections and services

   Knowledge organization systems (KOS)
     Gazetteers and related KOS

   ADEPT learning environment
     Concept-based learning spaces
     Collections and services
                         Smith et al • NSF • April 3, 2003          2
                               Alexandria Digital Library Project

ADLP History
   Pre-1994: UCSB geo-information and map library
   1994-98 DLI-1: georeferenced collections/access
   1998-99: Operational ADL (UCSB Library/CDL)
   1999-2004 DLI-2: distributed DL
       Extension of architecture and access services
       Knowledge organization services
       Integration of learning services
       Geo/GIS-based interfaces
       Basic CS research
   2004-2008: Large-scale DLs and beyond
     NSDL Core Infrastructure and services
     Cyber Infrastructure
                         Smith et al • NSF • April 3, 2003          3
                                 Alexandria Digital Library Project

ADLP Goals
   Current goals: Distributed DLs and applications
     Operational distributed digital library
        – services for construction/use of georeferenced collections
        – DL federation and interoperation
        – scalability over many heterogeneous collections
     Development/integration of KOS services
     Integration of concept-based learning spaces
        – services for creating/using learning environments
     Development of geo-based interfaces
     Evaluation of services
     Basic computational science research
   Emerging goals: Large-scale DLs and beyond
     Extending NSDL Core Infrastructure and services
     Cyber Infrastructure

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                              Alexandria Digital Library Project

ADLP Major Collaborative Activities

   1994-98
     4 DLI-1 partners: CMU, Illinois, Stanford, UCB
     SDSC, U.Arizona, US Navy, NIMA, LoC, MSFT, ESRI,…
   1999-2004
       UCSB Library, CDL
       DLI-2 partners: UCLA, GT, SDSC/NPACI, Stanford, UCB
       DLESE
       NSDL CI partners: Cornell, Columbia, U.Mass
       NSDL Services partners: IIT Chicago, UCSD
       JISC partners: Penn State, Southampton, Leeds
       …



                        Smith et al • NSF • April 3, 2003          5
                                             Alexandria Digital Library Project
ADLP Activities                                               GEOREFERENCED DIGITAL LIBRARIES

                                                          •   distributed georeferenced DL services
EDUCATIONAL APPLICATIONS                                  •   NSDL core infrastructure
                                                          •   data environment (e.g., GIS) integration
• knowledgebase and lecture composing,                    •   hardware acceleration for spatial data
  visualization, and presentation tools                   •   collaborative tools
• physical geography concept space and                    •   Z39.50 support
  learning object collections                             •   ingest and workflow systems
• applications to undergraduate education
• educational evaluation
                                                              KNOWLEDGE ORGANIZATION
• learning services and DL integration
• digital classrooms                                      • gazetteers: research and community
• metadata content standards                              • gazetteer content standard
      • learning objects                                  • web service protocols for gazetteers,
      • computational models                                thesauri, and other KOS
                                                          • ADL gazetteer
 USER INTERFACES                                          • thesauri for feature and object types
                                                          • duplicate detection for gazetteers
• reusable user interface components                      • textual-geospatial integration services
     • contextual maps, footprint creation
     • KOS navigation
                                                              OPERATIONAL APPLICATIONS
     • lightweight GIS functionality
• Digital Earth visualization                            •    georeferenced DL tutorials
• image processing                                       •    distributable software packages
     • query-by-content, classification                  •    operational libraries: UCSB library, ...
     • spatial extent determination                      •    outreach; federated nodes
                                      Smith et al • NSF • April 3, 2003                                  6
                               Alexandria Digital Library Project

Outline
   Alexandria Digital Library Project (ADLP)
     History
     Goals, activities, partners

   Distributed DL supporting georeferenced access
     Research and development issues
     Operational collections and services

   Knowledge organization systems (KOS)
     Gazetteers and related KOS

   ADEPT learning environment
     Concept-based learning spaces
     Collections and services
                         Smith et al • NSF • April 3, 2003          7
                              Alexandria Digital Library Project

Goals
   Digital library architecture for
    geospatial/georeferenced information
     heterogeneous
     rich services
     scalable
       – many providers
       – collections, large and small


   DL infrastructure, not artifact
     standard components and interfaces
     distributed participants



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                             Alexandria Digital Library Project

Issue: discovery
   Naïve approach
     I want a map of Boulder
      “Downtown street map of Boulder, Colorado”


   But... remote-sensing imagery is nameless
     AVHRR NOAA-13 2002-06-03 14:33 UTC


   But... direct placename search is unreliable
     I want a map of the Flatirons in the Rocky Mountains just
      behind Boulder, Colorado
      USGS topographic map “Eldorado Springs”
     generally: many names for any given place

                       Smith et al • NSF • April 3, 2003          9
                                  Alexandria Digital Library Project

ADL approach
   Coordinate-based
    representation and discovery
     lat/lon coordinates                                           placenames
     rich geometry
                                                           client
        – polygons, polylines
     spatial operators
        – overlaps, contains
                                                                        gazetteer

   Gazetteer
     content standard defines                                  coordinates
      representation
     service maps placenames                            library
      coordinates



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                                Alexandria Digital Library Project

Issue: multiple data types
   Geospatial discovery is not amenable to text
    treatment
     constitutes new data type


   Adding notion of different data types has many
    implications:
       input validation
       internal structures, external representations
       query language and processing
       ranking
       user interface components



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                              Alexandria Digital Library Project

ADL approach
   Discovery: “bucket framework”
     extensible data type system for metadata
       – XML representations, search operations
     native metadata is explicitly mapped to buckets
     software supports bucket views over arbitrary RDBMSs
     9 Dublin Core-like standard buckets


   User interface components
     background maps, item footprint identification/creation


   Spatial ranking
     by spatial similarity to query region

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                             Alexandria Digital Library Project

Bucket mapping

Originator

 FGDC
                       U.S. Geological Survey
                                                           field-level
 Citation/Originator                                       searching
 USGS DOQ
                       Photo Science, Inc.
 Producer




    collection                bucket-level
    statistics                 searching

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                                    Alexandria Digital Library Project

Collection statistics
                                                                  Spatial




                                                                        Temporal




 Object Type               Count
 cartographic works       324,876
   maps                   324,876
 images                 2,014,799
   photographs            484,083
      aerial photographs 484,083
      •
      •
      •

                              Smith et al • NSF • April 3, 2003                    14
                              Alexandria Digital Library Project

ADL approach
   Discovery: “bucket framework”
     extensible data type system for metadata
       – XML representations, search operations
     native metadata is explicitly mapped to buckets
     software supports bucket views over arbitrary RDBMSs
     9 Dublin Core-like standard buckets


   User interface components
     background maps, item footprint identification/creation


   Spatial ranking
     by spatial similarity to query region

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                             Alexandria Digital Library Project

ADL in context


                                                                 GIS

                                                      ADL
 affordances




                           ODL
                     OAI
                           Greenstone
                                                           DLs
               Web


                           generality • structure
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Issue: scalability
   Size
     easy to accumulate lots of data
       – satellites image continuously
     geospatial discovery scales... not so well
       – indexing unwieldy at 106 items
     efficiently joining spatial, other constraint types is difficult


   Burden & management
     collection building is labor-intensive
     providers have differing content, services, IP concerns,
      policies, lifetimes
     providers already exist
       – MS Terraserver: 3 TB, 750 million items

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                                Alexandria Digital Library Project

ADL approach
   Distributed library of peer nodes
     library nodes host collections
     other nodes host gazetteers, thesauri, other KOS
     other components, e.g., map servers

   Federated item-level search
     over buckets
     over individual metadata fields mapped to buckets

   Centralized collection-level search/ranking
     over collection statistics derived from bucket mappings
        – space, time, type, format
     any library node can act as collection registry

   Collection aggregation
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                                Alexandria Digital Library Project

Issue: context & use of library items
   Context is critical in geospatial DLs
     formulating queries
     evaluating result sets and individual results


   Use of geospatial data
     need access descriptions
       –   “item content  single URL” is insufficient
       –   multiple formats
       –   multiple access methods
       –   multiple components
     need integration with common data environments
       – ARC/INFO, etc.


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                          Alexandria Digital Library Project

Geospatial context
   Does this answer your question?



    Flagstaff Rd.

                                                        Flatirons #1-5




       Green Mountain
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                               Alexandria Digital Library Project

ADL approach
   All library functionality is accessible via...
     web service APIs
     Java RMI

   Content access model
     characterizes methods of access
     multiple “access points”
        – download, service, web interface, offline
        – hierarchies of alternatives, decompositions


   Context
     background maps
     library-supplied lightweight GIS functionality

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                                Alexandria Digital Library Project

Incorporation into NSDL/CI
   Geospatial/georeferenced data is an instance of
    science data
       complex, well-defined structure
       rich metadata
       large size
       poorly served by traditional information retrieval methods


   Science data belongs in NSDL

   For NSDL: comparable infrastructure enabling...
     distributed, content-specific search services
     association of DL items and content-specific helper tools

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                              Alexandria Digital Library Project

Operational status
   ADL co-developed with UCSB Library
     production-quality software
     foundation of operational library since 2000
     complete system in 2003


   UCSB Library: Map & Imagery Laboratory (MIL)
     self-supporting, 5 full-time employees
     2.6 million items, 6.5 TB, growing 1.5 TB/year
     4.5 million item gazetteer


   Remote sites
     ESSW, CNR, DLESE, SIO, NTNU, AUT

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                               Alexandria Digital Library Project

Outline
   Alexandria Digital Library Project (ADLP)
     History
     Goals, activities, partners

   Distributed DL supporting georeferenced access
     Research and development issues
     Operational collections and services

   Knowledge organization systems (KOS)
     Gazetteers and related KOS

   ADEPT learning environment
     Concept-based learning spaces
     Collections and services
                         Smith et al • NSF • April 3, 2003          24
                               Alexandria Digital Library Project

KOS activities & contributions
   KOS as primary components of DL architecture
     Heretofore not acknowledged as a major component
     ADL/ADEPT thesaurus and gazetteer service protocols


   Gazetteer components of DLs
     Growth of a research and development community,
      adopting/adapting/sharing our ADL Gazetteer components
     Gazetteer research issues
     NSDL Textual Geospatial Integration Project


   KOS integration into learning environments
     Terry Smith will address this in detail

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                              Alexandria Digital Library Project

Digital Library Components
                DATA STORE                    CATALOG
 Libraries         OF                               OF
 Collections
                 OBJECTS                     METADATA


    SERVICES               KNOWLEDGE ORGANIZATION SYSTEMS
  ACCESSING                AUTHORITY FILES
  ANALYZING                CLASSIFICATION SYSTEMS
                           CONCEPT SPACES
  ARCHIVING
                           DICTIONARIES
  CATALOGING
                           GAZETTEERS
  DIGITIZING               GLOSSARIES
  RETRIEVING               ONTOLOGIES
  SEARCHING                SUBJECT HEADING SETS
                           THESAURI
  VISUALIZING


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                     Alexandria Digital Library Project

KOS Generalization



Definition                                           Type

                         Label
               Relationships
                     Meaning

Sense-making     Navigation                        Translation

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                               Alexandria Digital Library Project

Digital Gazetteer Essentials




                                                             (controlled vocabulary)




 •None of these elements are unique identifiers of a particular place




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                             Alexandria Digital Library Project

Building gazetteer research community
   1994-1996: ADL built the first multi-million-entry
    international gazetteer and integrated it into the
    ADL system

   1996-1999: ADL created...
     Gazetteer Content Standard
     Feature Type Thesaurus (210 preferred terms; 1046 non-
      preferred)
     rebuilt the ADL Gazetteer (over 4 million entries)
     provided web interfaces for searching the ADL Gazetteer




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                             Alexandria Digital Library Project

Building a research community
   1999-present
 Digital Gazetteer Information Exchange (DGIE) Workshop,
  funded by NSF (66 participants), 1999
 JCDL 2002 workshop on Digital Gazetteers – Integration in
  Digital Library Services (38 participants; sponsored by NKOS)
 NAACL 2003 workshop on Analysis of Geographic References

 ADL-hosted discussion list for gazetteer issues; archived by
  NSF DLI2 (146 subscribers)

 Set of 5.9 million geographic names available for download –
  useful for placename recognition in text
 Gazetteer Service Protocol and protocol server code
 An “external identifier” for ADL Gazetteer records
 New gazetteer client that is based on the gazetteer protocol


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                               Alexandria Digital Library Project

Our network of gazetteer interactions
    Electronic Cultural Atlas Initiative (ECAI) gazetteer project
    Academia Sinica’s Taiwan Gazetteer
    UK Historical Boundaries project

   UK Geo-crosswalk project
   Digital Library for Earth System (DLESE) Education
   Biodiversity research, such as the “Specify” system –
    University of Kansas
   State projects, such as NY Agricultural History project (in
    proposal stage) and Florida statewide gazetteer project
   University of Redlands internship proposal (mini-GIS)
   Bulgarian Antarctic Place-Names Commission


  SRI’s Artificial Intelligence Center (spatial reasoning)
  Navy’s SPAWAR Systems Center (natural language process.)
  THREDDS project at UCAR (event gazetteers)
  Illinois Institute of Technology (geoparsing research)
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                      Alexandria Digital Library Project

Advancing and extending gazetteers

Named Time Periods
World War I ___|_____|___
              1914 1918




                Named Spatiotemporal Events
                Such as Hurricane Hugo




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                                                           Alexandria Digital Library Project

Advancing and extending gazetteers
                                                      What happens when we extend the
                                                      digital gazetteer model to anatomy:
                                                      named structures in the brain, for
                                                      example?

http://www.ohiou.edu/~linguist/l550ex/brainpic.htm                               Or to celestial space
                                                                                 and 3-d features?




Credit & Copyright: Sherry Buttnor                                                       Anticline Famennian sandstone, Hastière
http://antwrp.gsfc.nasa.gov/apod/ap011120.html                                           http://www.nitg.tno.nl/eng/iccp_tripj.shtml

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                                  Alexandria Digital Library Project

Advancing and extending gazetteers
Obtaining extents from image analysis

                                                     • Recognizing
                                                       patterns
                                                     • Identifying features
                                                       from gazetteers
                                                     • Deriving the extent
                                                       of the features from
                                                       feature analysis
                                                     • Adding bounding
                                                       box footprints to
  Santa Barbara Municipal Airport
                                                       gazetteer entries


                            Smith et al • NSF • April 3, 2003                 34
                             Alexandria Digital Library Project

Advancing and extending gazetteers


 Lake Bigler, thru 1920s                               The duplicate detection
 Lake Bonpland (also Bondland),                        problem.
    thru 1890s
 Da-ow-a-ga, thru 1850s                                Given variant names and
                                                       variant footprints, how
                                                       do we determine that
                                                       two pieces of information
                                                       are about the same
                                                       place?




                       Smith et al • NSF • April 3, 2003                         35
                                            Alexandria Digital Library Project

Advancing and extending gazetteers

                                     Effective and efficient database indexing
                                     techniques for large spatial + text data
                                     collections



From Michael Freeston, New Generic
Indexing Technology




                                     Test database of 2-d shapes in a
                                     geographic area to test the “sufficiency”
                                     of spatial generalizations (e.g., bounding
                                     boxes) for information retrieval based on
                                     spatial similarity (e.g., degree of overlap
                                     or containment)


                                      Smith et al • NSF • April 3, 2003            36
                               Alexandria Digital Library Project

Gazetteer ITR Proposal
     Advancing and Extending Georeferencing
       Interoperability and Services (AEGIS)
     Medium ITR proposal for 2003
     Michael Goodchild, UCSB, PI
     Lewis Lancaster, Berkeley/ECAI, co-PI


   Formalization and extension
   Performance and scalability
   Cross-cultural issues
   Cognitive and behavior issues
   Extents: representation of a feature’s geometry
   Integration of locator services


                         Smith et al • NSF • April 3, 2003          37
                                  Alexandria Digital Library Project

NSDL Textual Geospatial Integration
                            2001 - 2003
              Goals                                             Participants
Extend NSDL infrastructure by
                                                        University of California, Santa
  enabling                                              Barbara
 geographic queries                                          James Frew, PI
                                                              Terence Smith
    across heterogeneous,
                                                              Michael Bueno
     text and non-text                                        Linda Hill
     resources                                          Information Retrieval Lab,
                                                        Illinois Institute of Technology
   spatial georeferencing                                    Ophir Frieder

      of arbitrary texts without                             David Grossman
                                                              Eric Jensen
       explicit geographic
                                                              Steve Beitzel
       cataloging

      The American Geological Institute (AGI) has permitted us to use a set
      of their GeoRef records for system training.
                            Smith et al • NSF • April 3, 2003                              38
                                     Alexandria Digital Library Project
Example text -> Estimated footprint
Structure and petrography of the schist of Skookum Gulch, Callahan-Yreka
area, eastern Klamath Mountains, Northern California
<key>blueschist | California | Callahan California | foliation | Klamath Mountains |
melange | metamorphic rocks | Ordovician | Paleozoic | petrology | schists | Silurian |
Siskiyou County California | Skookum Gulch | United States | Yreka California</key>
<ab>The schist of Skookum Gulch (SSG) is an informal name applied to a fault-bounded
melange composed mainly of schistose metamorphic rocks and less abundant sedimentary and
igneous rocks located in the eastern Klamath Mountains of Northern California. The SSG
features outcrops of lawsonite+sodic amphibole blueschist and epidote+sodic amphibole
rocks transitional to the greenschist facies. Isotopic dating indicates that the schist
was metamorphosed during the Ordovician. The SSG is the oldest known Paleozoic
blueschist-bearing melange in California and one of the oldest preserved blueschist
terranes in North America. Tonalitic rocks associated with the schist have Early Cambrian
ages and are among the oldest rocks yet dated within the Klamath Mountains. Field
relations indicate that the schist of Skookum Gulch is a complex tectonic melange
composed of metavolcanic, ...</ab>
<coord>N410000N420000W1220000W1230000</coord>


• Derived footprint - small
• Blue: derived footprint – large
• Red: GeoRef footprint
                               Alexandria Digital Library Project

KOS activities & contributions
   KOS as primary components of DL architecture
     Heretofore not acknowledged as a major component
     ADL/ADEPT thesaurus and gazetteer service protocols


   Gazetteer components of DLs
     Growth of a research and development community,
      adopting/adapting/sharing our ADL Gazetteer components
     Research issues
     NSDL Textual Geospatial Integration Project


   KOS integration into learning environments
     Terry Smith will address this in detail

                         Smith et al • NSF • April 3, 2003          40
                               Alexandria Digital Library Project

Outline
   Alexandria Digital Library Project (ADLP)
     History
     Goals, activities, partners

   Distributed DL supporting georeferenced access
     Research and development issues
     Operational collections and services

   Knowledge organization systems (KOS)
     Gazetteers and related KOS

   ADEPT learning environment
     Concept-based learning spaces
     Collections and services
                         Smith et al • NSF • April 3, 2003          41
                               Alexandria Digital Library Project

Applications services based on DLs
   Integrate applications with DL infrastructure
       Web portals lack library organization
       “packages” not integrated with DLs


   Important applications include
       Services/collections supporting learning environments
       Services/collection supporting research


   Apply domain-specific KOS principles for organizing
    collections/services for given application
       Geospatial applications: use georeference
       Science learning environments: use concept spaces

                         Smith et al • NSF • April 3, 2003          42
                                Alexandria Digital Library Project

Science learning spaces: Concept KOS
   Concepts of science as basic knowledge granules
       Sets of concepts form bases for scientific representation
       DL and KOS technology can support organization of science
        learning materials in terms of concepts
        – Collections of models of science concepts (knowledge base)
        – Collections of learning objects (LO) cataloged with concepts
        – Collections of instructional materials organized by concepts
   Organize learning materials as “trajectory through
    concept space”
       Lecture, lab, self-paced materials
       Services for creating/editing/displaying such materials



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                                    Alexandria Digital Library Project

Learning environment components/services
      Input/Edit Services           Input/Edit Services           Input/Edit Services
        Search Services               Search Services               Search Services




                Concept
               Knowledge                       Lecture                     ADEPT
                 Bases                        Collections                   Object
                                                                          Collections




           Display Services               Display Services             Display Services


                                      ADEPT Search Services


                              Smith et al • NSF • April 3, 2003                           44
                                   Alexandria Digital Library Project

Application to learning environments
   Application
       Introductory physical geography (F2002, S2003)
   Collections created
       Knowledge base (KB) of strongly structured concepts
       Structured lectures and labs
       Learning objects cataloged by ADN metadata (+ concepts)
   Services created
       For concepts
        –   Web-based concept input tool
        –   Graphic and text-based display tools
       For instructional materials
        –   Web-based “lecture composer”
        –   “Conceptualization” graphing tool
       For learning objects
        –   Metadata input tool


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                             Alexandria Digital Library Project

Learning environment display (lecture mode)




    The lecture is presented on three projection screens,
     showing the
       Concept window (left)
       Lecture window (center)
       Object window (right)

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                                Alexandria Digital Library Project

Model of science concepts
   Representing a concept involves more than terms
       Objective, information-rich, scientific representations
        – e.g., for concepts of heat diffusion, DNA, drainage basin, …
       Associated semantics
        – e.g., relating to measurement, recognition,…
       Many interrelationships
        – e.g., hierarchical, causative, property,…
   Models of science concepts
       Already exist for chemistry (ASA), materials (NIST),…
       Generalize such models for this application
   Structure items in concept KB using model


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                                Alexandria Digital Library Project

Model of science concepts
     ID
     TYPE and FACET
     CONTEXT (KNOWLEDGE DOMAIN)
     TERM(S) (P/NP)
     DESCRIPTION(S)
     HISTORICAL ORIGIN(S)
     EXAMPLE(S)
     HIERARCHICAL RELATIONS
     DEFINING OPERATIONS
     SCIENTIFIC REPRESENTATION(S)
       – Scientific classifications
       – Data/Graphical/Mathematical/Computational reps
     PROPERTIES
     CAUSAL RELATIONS
     CO-RELATIONS
     APPLICATION(S)
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                   Alexandria Digital Library Project

Item in concept knowledge base




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                    Alexandria Digital Library Project

Concept input tool




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                                Alexandria Digital Library Project

Collections of learning materials
   Lecture/lab composer
       Creates learning materials with
        – Tailorable structure
        – Underlying organization as “forest of trees” of concepts
       Small reusable granules for
        – Easy creation/edit/access/re-use
       Can link in
        – Concepts from concept KB
        – Items from learning object collections
        – Items from lecture collection




                          Smith et al • NSF • April 3, 2003          51
                                    Alexandria Digital Library Project

Current instructional material window
   The left-hand
    frame displays
    the structure of
    the lecture

   The right-
    hand frame
    displays the
    content of the
    lecture

   ADL icons
    (globe image)
    attached to a
    concept link to
    a display of
    concept
    properties in
    the concept
    window
                       Other icons attached to a concept link to a display of concept
                       examples in the illustration window
                              Smith et al • NSF • April 3, 2003                         52
                    Alexandria Digital Library Project

View of learning material by concepts




              Smith et al • NSF • April 3, 2003          53
                    Alexandria Digital Library Project

Lecture/lab/… composer tool




              Smith et al • NSF • April 3, 2003          54
                              Alexandria Digital Library Project

Learning object collections
   Cataloged with tool for metadata creation
     ADN metadata content standard with concept fields
   Use of ADL/ADEPT middleware search services
     E.g., in creation of lecture/lab presentation materials
   Display of collection items in collection window
     Photos, images, maps, text, videos,…
   Support in display window for ADL browser
     Allows dynamic search of collection holdings




                        Smith et al • NSF • April 3, 2003          55
                    Alexandria Digital Library Project

The illustrations window




              Smith et al • NSF • April 3, 2003          56
                                Alexandria Digital Library Project

Evaluation of concept-based approach
   Evaluation of efficacy for student learning
       Do students attain “deeper levels” of understanding?
       Comparison approach to evaluation
   Evaluation of value to instructors/TAs
     UCLA evaluation team
   Evaluation issues
       Instrumenting students’ use of course materials
       Time to assess pedagogic value of approach




                          Smith et al • NSF • April 3, 2003          57
                              Alexandria Digital Library Project

Example of lessons learned
   Importance of “conceptualizations” of concept
     e.g., characterize concept of Fluvial Landscape with
      concepts of {River, Watershed}
     Embed conceptualizations in lecture/labs (not in KB)
     Idea of learning materials as trees in concept space
   Construct labs using analogous “lab” composer
     Tailored for lab presentations/work
     Supports of logic of using concepts as framework
     Can import material from lecture/other collections




                        Smith et al • NSF • April 3, 2003          58
                             Alexandria Digital Library Project

Summary
   DL infrastructure as basis for Learning Environments
     Collections
       – Concept KBs, Lectures, DL objects
     Services
       – Creation/Search/Display
   Evaluation of efficacy of approach
   Community-based development of KBs, Learning
    Materials, Collections




                       Smith et al • NSF • April 3, 2003          59
                                             Alexandria Digital Library Project
ADLP Activities                                               GEOREFERENCED DIGITAL LIBRARIES

                                                          •   distributed georeferenced DL services
EDUCATIONAL APPLICATIONS                                  •   NSDL core infrastructure
                                                          •   data environment (e.g., GIS) integration
• knowledgebase and lecture composing,                    •   hardware acceleration for spatial data
  visualization, and presentation tools                   •   collaborative tools
• physical geography concept space and                    •   Z39.50 support
  learning object collections                             •   ingest and workflow systems
• applications to undergraduate education
• educational evaluation
                                                              KNOWLEDGE ORGANIZATION
• learning services and DL integration
• digital classrooms                                      • gazetteers: research and community
• metadata content standards                              • gazetteer content standard
      • learning objects                                  • web service protocols for gazetteers,
      • computational models                                thesauri, and other KOS
                                                          • ADL gazetteer
 USER INTERFACES                                          • thesauri for feature and object types
                                                          • duplicate detection for gazetteers
• reusable user interface components                      • textual-geospatial integration services
     • contextual maps, footprint creation
     • KOS navigation
                                                              OPERATIONAL APPLICATIONS
     • lightweight GIS functionality
• Digital Earth visualization                            •    georeferenced DL tutorials
• image processing                                       •    distributable software packages
     • query-by-content, classification                  •    operational libraries: UCSB library, ...
     • spatial extent determination                      •    outreach; federated nodes
                                      Smith et al • NSF • April 3, 2003                                  60

				
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