README

Step 1: run startup.m to add dependencies
Step 2: run demo/small_20plot.m to see an interesting toy example.
Step 3: run demo/demo_digits_sample.m to see the most sophisticated usage 
which include taking a subsample, building a knn graph, and running all
active learning strategies for 2 repetitions (EER has been commented out). 
Step 4: modify demo_digits_sample.m to create your own problem. (ref 
  https://github.com/yifeim/sigma_opt_codes/blob/0b62ff1943e56def3f8012ba0574853e16803c46/demo/small_20plot.m#L13
  https://github.com/yifeim/sigma_opt_codes/blob/0b62ff1943e56def3f8012ba0574853e16803c46/demo/demo_digits_sample.m#L2
)

Also included:
data/ some other graphs I used. Their sources are detailed in the paper.

Contact: 
Yifei Ma. yifeim@cs.cmu.edu