Rule Extraction for Screening of COVID-19 Disease Using Granular Computing Approach

Algorithm 2

Algorithm to construct granular tree.

Result: A granular tree

(1) Compute Conditional Entropy, Confidence, Generality and Coverage for attribute-values in information table

(2) Select attribute-values with entropy =0

(3) Specify priority of attribute-values with zero entropy according to highest generality and highest coverage

(4) Choose instance of attribute-values with zero entropy, as set B

(5) Define as

(6) If then

  If then Extract rules and stop

  Else Define and goto (1)

 Else Add attribute-value that its instance highest coverage with

(7) Add instance of this attribute-value to B and goto (5)