Geographical Exploration Machine

1. What is a GEM?
2. What is Geographical Explanation?
3. Origins of GEM in GCEM
4. Original GCEM weaknesses
5. A new GCEM for 1998 called GEM
6. GEM modes of operation
7. What is a coverage?
8. What is a geographical data layer?
9. Non-geographical data layers
10. How many coverage permutations can GEM handle?
11. What are the benefits of GEM?
12. What are the problems with GEM?
13. Some solutions to the problems
14. Examples of surrogate spatial associations
15. Some causes of "real" relationships
16. Some causes of "false" relationships
17. What is indicative of "good" and "poor" spatial relationships
18. Why is interpretation potentially hard?
19. How do you measure the overall significance and R2 of the results?
20. How does the GIS polygon overlay part work?
21. Online Version of GEM