1. University of Southern California Background Photo by NASA, date unknown Texas A&M University Big GeoData Problems – High Volume Transactions and National Datasets Presented to: TAMU Big Data Workshop College Station, TX Dr. Daniel W. Goldberg Department of Geography, Department of Computer Science & Engineering Texas A&M University http://geoservices.tamu.edu daniel.goldberg@tamu.edu

2. Texas A&M University 2 Simple Problem - Geocoding

3. Texas A&M University 3 Who Cares Address Data Geocode Address Data Calculate Exposure Locational Spatially Referenced Spatial Analysis Values Conclusions Hot Spots Incomplete / incorrect Inaccurate location Incorrect assignment Invalid association Misguided actions Error Propagation Relative Magnitude

4. Texas A&M University 4 Challenges Geographic processes are complex, and there are lots of them 500 m radius 0.1 ppm 4.5 ppm 9.0 ppm 13.5 ppm 18.0 ppm 27.0 ppm 45.0 ppm 1000 m radius a) b) c) Discretizing continuous phenomena

5. Texas A&M University 5 Challenges Geography is everywhere, and there is lots of it 390 Million US Addresses Updated Quarterly

6. Texas A&M University 6 Challenges Geographic processing is complex, and it is done all the time Computing continuous phenomena

7. Texas A&M University 7 Challenges 1M transactions per day

8. Texas A&M University 8 Challenges High variety of access patterns, and all need to be fast Reference Date Transaction Logs Account Balance READWRITER/W

9. Texas A&M University 9 Challenges Infrastructure is complex, and there is lots of it 75+ VMs

10. Texas A&M University 10 Solutions Lots of interesting challenges Ripe for research opportunities Let’s get started

11. Texas A&M University THANKS FOR LISTENING Questions? Contact Information Dr. Daniel Goldberg Departments of Geography and Computer Science & Engineering Texas A&M University http://geoservices.tamu.edu daniel.goldberg@tamu.edu