Method research on selection and valuation of numeric scale in analytic hierarchy process

We point out the disagreement between the language description of DM and the numeric relation of scale division in AHP, and suggest setting out from the consistency to the language description of DM for selecting and valuating numeric scales. We also obtain a pedigree of numeric ratio scales including usual numeric scales. In the end, we give out a run-of-mill valuation method on the base of linguistic logic, which can reduce the decision deviation of selecting the numeric scale by error.