Comparative Assessment of Alternatives using Principal Component Analysis (PCA)

Abstract

Japan International Cooperation Agency (JICA) Guidelines for Environmental andSocial Considerations came into force on April 2004 and analysis of alternatives has been done including zero option. But the need of its improvement was pointed out. Cases of Japan, overseas and JICA were reviewed and the present situations and problems were summarized. This paper proposed comparative assessment of alternatives using principal component analysis (PCA), which was confirmed to be reasonable and easy-to-use way and showed the validity of zero option and mitigation measures by analysis of alternatives. Finally the paper indicated the adequacy of mitigation measures by analysis of alternatives in the international cooperation field.