Comprehensive Evaluation of Offshore Oilfield Development Plans Based on Grey Clustering Analysis with Cloud Model

Algorithm 2

Single condition rule cloud generator. Among them, , , and , , respectively, said expectation, entropy, hyper entropy of the antecedent and the antecedent .

INPUT: the qualitative concept of antecedent A, and its initial quantitative value , the qualitative concept

of consequent , ;

OUTPUT: Cloud drop in the consequent universe and its certainty degree .

Step 1. Generate a normally distributed random number with expectation and variance , i.e. ;

Step 2. Generate a normally distributed random number with expectation and variance , i.e. ;

Step 3. Calculate certainty degree ;

Step 4. Calculate cloud drop’s value .