The data in this directory is from the article listed below.
Please cite as follows:

@ARTICLE{AN:mean-risk,
AUTHOR = {A. Atamt{\"u}rk and V. Narayanan},
TITLE  = {Polymatroids and Mean-Risk Minimization in Discrete Optimization},
JOURNAL= {Operations Research Letters},
VOLUME = {36},
PAGES  = {618-622},                 
YEAR = {2008}}