It uses data from longevity, education, and income to infer regional social and economic life quality ... Self-organizing (Kohonen or SOM) maps were used to perform clustering and data visualization.

Three of these establishments are based in Calbayog City, Samar; two each in the cities of Tacloban and Ormoc, in Leyte; and one is in Padre Burgos, Southern Leyte, data released by the DOT regional ...