A Bitwise Design and Implementation for Privacy-Preserving Data Mining: From Atomic Operations to Advanced Algorithms

Algorithm 4

FHE sigmoid function by Taylor expansion.

	Input: a training data
	Output: logistic value of w.r.t the Taylor expansion method
(1)	Convert coefficient into arrays
(2)	Construct power series of x to 9th power
(3)	Multiply with corresponding power of x
(4)	Add all the derived terms in step 3