Weighted logarithmic least squares in group decision-making

The Analytic Hierarchy Process (AHP) is widely used in group decision-making. In group decision-making, each decision-maker has different decision capacities. So the quality of information given by each decision-maker is also different. Thus high and low quality information should be treated differently. A constructed filter function can make full use of the high quality information and filter the low quality information to improve the decision accuracy.