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Shashi Shekhar
Mcknight Distinguished University Professor
Contact Info: ~shekhar ,
Spatial Databases, Spatial Data Mining, Geographic Info. Systems
Courses: Csci 8715: Spatial Databases, Csci 4707: Database I (Fall 2008)
Projects: NSF: III-CXT: Spatio-temporal Graph Databases for Transportation Science
NSF: IGERT: Non-equilibrium Dynamics Across Space and Time
NSF: CRI:IAD Infrastructure for Research in Spatio-Temporal and Context-Aware
Systems and Applications
USDOD: Spatio-Temporal Pattern Mining for Multi-Juris. Multi-Temporal Activity Datasets
USDOJ: Spatial Database Research for Mapping and Analysis for Public Safety
USDOD: Modeling and Mining Spatio-temporal Data
UM: OVPR: Minnesota Futures: Exploring Spatio-temporal Future of Geo-Informatics
Spatial Databases: Representative Projects
Evacutation Route Planning
Range Queries
only in old plan
Only in new plan
In both plans
Shortest Paths
Storing graphs in disk blocks
Spatial Data Mining : Representative Projects
Location prediction: nesting sites
Nest locations
Spatial outliers: sensor (#9) on I-35
Distance to open water
Vegetation durability
Co-location Patterns
Water depth
Tele connections
(Geo) Informatics across Disciplines!
Spatio-Temporal (ST) Questions
• How do we conceptualize spatio-temporal (ST) worlds?
• How do we measure ST concepts, recognize them in (remotely) sensed information or in
the field, and identify their accuracy and quality?
• How do we represent ST concepts with incomplete/ uncertain information, with
alternative data models, and possibly with multiple representations for the same data, in
digital environments?
• How do we store, access, and transform ST concepts, facilitating data sharing, data
transfer, and data archiving, while ensuring minimum information loss?
• How do we explain ST phenomena through the application of appropriate methods of
forward or inverse models of physical and human processes?
• How do we visualize ST concepts on a variety of media such as maps on electronic
displays or animated displays ?
• How do we use ST concepts to think about spatio-temporal phenomena, and to seek
explanations for spatio-temporal patterns and phenomena?
• Source: Adaptation from NCGIA proposal to NSF by Goodchild et al.