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SPATIAL. DATABASE. RESEARCH. GROUP. Group Members Faculty : Professor Shashi Shekhar Professor Mohamed Mokbel Students : Mete Celik Betsy George James Kang Sangho Kim Xiaojia Li Qingsong Lu Xiaobin Ma Reid Priedhorsky Abhinaya Sinha Jin Soung Yoo Changqing Zhou

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Presentation Transcript
slide1

SPATIAL

DATABASE

slide4

Group Members

Faculty :

Professor Shashi Shekhar

Professor Mohamed Mokbel

Students :

Mete Celik

Betsy George

James Kang

Sangho Kim

Xiaojia Li

Qingsong Lu

Xiaobin Ma

Reid Priedhorsky

Abhinaya Sinha

Jin Soung Yoo

Changqing Zhou

Recent Graduates :

Yan Huang (Univ. of North Texas)

Baris Kazar(Oracle)

Hui Xiong(Rutgers Univ.)

Pusheng Zhang(Microsoft)

slide5

Ongoing Projects

  • Evacuation Planning
  • MN-DOT : Evacuation Planning Software for Twin Cities Metro
  • Area Scenario
  • MN-DOT : Decision Support System for Evacuation Route-Schedule Planning:
  • Determining Optimal Network Configuration
  • Spatio-Temporal
  • Oak Ridge National Lab : Spatio-temporal knowledge discovery in the SensorNet
  • database
  • NSF SEI : Spatio-temporal data analysis techniques for behavior ecology
  • High Performance Spatial Data Mining
  • AHPCRC : Spatial Auto-regression Model – Classification and Location Prediction
  • Ongoing Activities
  • IGERT (Integrative Graduate Education and Research Traineeship) :
  • Non-equilibrium Dynamics Across Space and Time: A Common Approach
  • for Engineers, Earth Scientists, and Ecologists
slide6

Evacuation Planning: Motivation

No effective evacuation planning

Traffic congestions on all highways

Great confusions and chaos

Hurricane Andrew

Florida and Louisiana, 1992

"We packed up Morgan City residents to evacuate in the a.m. on the day that Andrew hit coastal Louisiana, but in early afternoon the majority came back home. The traffic was so bad that they couldn't get through Lafayette."

Mayor Tim Mott, Morgan City, Louisiana ( http://i49south.com/hurricane.htm )

( National Weather Services)

Hurricane Katrina

Gulf Coast, 2005

Hurricane Katrina evacuees from New Orleans clog Interstate 10.

Hurricane Evacuation Route Signs

( news.yahoo.com)

( National Weather Services)

slide7

Evacuation Planning: A Real Scenario

Experiment Result

Total evacuation time:

- Existing Plan: 268 min.

- New Plan: 162 min.

Monticello Power Plant

Source cities

Destination

Routes used only by old plan

Routes used only by result plan of

capacity constrained routing

Routes used by both plans

Congestion is likely in old plan near evacuation destination due to capacity constraints. Our plan has richer routes near destination to reduce congestion and total evacuation time.

Twin Cities

slide8

Evacuation Planning: Contraflow

Contraflow increases capacity by reversing the direction of roads.

NP-complete, combinatorial optimization problem.

Results of

Flip High flow Edge First

(FHFE) Heuristic:

38% Reduced Evacuation Time

slide9

Spatial Data Mining: Motivation

Nest locations

Distance to open water

Vegetation durability

Water depth

slide10

Answers:

Spatial Data Mining: Co-location

Given: a collection of different types of spatial events

Find: Co-located subsets of event types

slide11

Spatial Data Mining: Spatial Outlier

Spatial Outlier:

A data point that is extreme relative to its neighbors

Cell-Tree

CCAM

Z-order