Extraction method of rules for measuring air threat to surface vessel formation under the condition of incomplete information system

摘要

A kind of extraction method of rules for measuring air threat to surface vessel formation under the condition of incomplete information system is put forward to measure air threat to surface vessel formation in such a case. Discount coefficient, which is produced when expert decision-making information are the most similar to each other, is generated after the study on information filling when condition attribute is missing and strategy generation when decision-making attribute is missing in the incomplete information system. On the condition that the requirements of air defense decision-making are met, the value of θ - λ is set to calculate the reduction rules of incomplete information system. When part of condition attribute or decision-making attribute is missing, this method can provide satisfactory target threat measurement for surface vessel formation to make air defense decisions.