Abstract: This paper presents two simple approaches of synthesizing evaluation of economic benefit. The approaches, based on the simple weighting methods (SAW),can be used for objective determination of weighting coefficients between evaluation objectves without any quautity requirement and restriction regarding the evaluation objectives and decision making schemes. compared with the method of non-time-series multiattribute decision, the results from synthesizing evaluation for economic benefit of 16 provinces and cities of nation by these two approaches have shown their efficiency.

Key words: Multiattribute Decision Making, Time-Series, Multiattribute Decision Making, Characteristic Vector