Research on the Application of Multimedia Entropy Method in Data Mining of Retail Business

Algorithm 1

Basic incremental feature selection algorithm.

(1)	Initialize S = ∅;
(2)	For each candidate feature f, the following steps are performed:
(a)	is calculated by IIS algorithm;
(b)	Calculate the gain when adding f;
(3)	Check the algorithm end condition, and if the condition is true, it ends;
(4)	The characteristic with maximum gain is selected and added to S.
(5)	The is calculated by IIS algorithm and go to step 2;