A Hybrid Sales Forecasting Scheme by Combining Independent Component Analysis with K-Means Clustering and Support Vector Regression

Table 7

Summary of best parameter sets of the K-means-SVR, ICA-GHSOM-SVR, and ICA-k-SVR for the three sectors.

Group name	Models	Best parameter sets
K-means-SVR	Manufacturing	(𝐶 = 2^−1, 𝜀 = 2^−1)
	Service	(𝐶 = 2^−5, 𝜀 = 2^−3)
	Finance	(𝐶 = 2^5, 𝜀 = 2^−5)
ICA-GHSOM-SVR	Manufacturing	(𝐶 = 2^3, 𝜀 = 2^1)
	Service	(𝐶 = 2^3, 𝜀 = 2^3)
	Finance	(𝐶 = 2^−1, 𝜀 = 2^−1)
ICA-k-SVR	Manufacturing	(𝐶 = 2^−7, 𝜀 = 2^−3)
	Service	(𝐶 = 2^−9, 𝜀 = 2^−3)
	Finance	(𝐶 = 2^−5, 𝜀 = 2^−5)