The authors of the data set "DATA_SET_NAME" are

Ivan Ivanov
Institute for System Programming of the Russian Academy of Sciences
Aleksandra Solzhenitsyna, 25, Moscow, Russia, 109004
iivanov@google.com

Maria Petrova
Market Economy Institute of the Russian Academy of Sciences
Nakhimovsky Prospect, 47, Moscow, Russia, 117418 
mpetrova@yahoo.com