Identification of Key Influencing Factors of User Experience of Mobile Reading APP in China Based on the Fuzzy-DEMATEL Model

Algorithm 1

Specific steps of the fuzzy-DEMATEL algorithm.

	The steps of the fuzzy-DEMATEL algorithm:
	Step 1. Set up judgment matrix A through expert evaluation results;
	Step 2. Process the judgment matrix A using triangular fuzzy number and obtain the initial direct-relation matrix B though correspondence between expert semantic code and triangular fuzzy number as given in Table 2;
	Step 3. Defuzzify the initial direct-relation matrix B through the CSFC method to obtain direct-relation matrix Z:
	Standardize the triangular fuzzy number;
	Standardize the left value and right value of the triangular fuzzy number;
	Calculate the clear value of each expert evaluation’s fuzzy value after defuzzification;
	Calculate the average clear value and get direct-relation matrix Z.
	Step 4. Normalize the direct-relation matrix Z to obtain the generalized direct-relation matrix D;
	Step 5. Set up the total-relation matrix;
	Step 6. Calculate the influence degree and influenced degree of each factor;
	Step 7. Calculate the center degree and cause degree of each factor, and the results of center degree and cause degree are given in Table 3;
	Step 8. Construct the causality diagram, taking the center degree of each factor as the horizontal coordinate and the cause degree of each factor as the vertical coordinate, as shown in Figure 1.