1. Misogyny on Twitter
By: Li Tong

2. Background Twitter provides a platform for free speech
Misogyny is the prejudice against women.

3. Data
Data collection: twitter API stored on servers at Oxford Internet Institute (OII).
key words: *****, *****, ****, *****
map of tweets

4. Map of Tweet

5. The misogynic tweets distribution

6. The misogynic tweets distribution

7. Method The points do not contain the attribute value.
Creating the grid by overlaying the hex-bin layer and point layer
Then counting the number of point in each hex-bin
Study area: New York State

8. Method Whether or not there is cluster occurring in the study area?
Global Moran’s I
Where is the cluster?
Determine the scale
Find out the minimum, maximum, and average distance between the polygons
Execute incremental spatial autocorrelation
Figure out the bandwidth based on the Z score
Local statistic
Local Moran’s I

9. Method Two ways to determine the weight Compare with the two results
Fixed Bandwidth
Contiguity edged only
Compare with the two results
Figure out how scale influences the results

10. Results for 2000 km2
The minimum, the maximum, and the average distance to the specified Nth nearest neighbor (N = 1)
Minimum Distance
24.352(km)
Average
38.411(km)
Maximum
56.066(km)

11. Results for 2000 km2
Spatial Autocorrelation by Distance

12. Results for 2000 km2
Global Moran’s I Summary by Distance

13. Result for 2000km2
Fixed bandwidth

14. Result for 2000 km2
Contiguity Edged Only

15. Results for 2000 km2
The outlier (the blue area) is not shown on the result with fixed bandwidth because the difference between area covered by the hex- bin and circle.
The contiguity edged area is better for this case

16. BUT!!

17. The results in other scales
The result of 1000 km2

18. The results in other scales
The result of 500 km2

19. The results in other scales
The result of 200 km2

20. The results in other scales
The result of 100 km2

21. Discussion
The scale of the hex-bins influences the result. More clusters are shown in the smaller scale.

22. Question Please!!! NO

23. Question Please!!!