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# structure of Weights2: (alpha),(apha_11,...,alpha_1M),(apha_21,...,alpha_2H),
# (w_1,...,w_H),(Matrix with all q_mh m in 1,...,M, h in 1,...,H),
# (Matrix with all w_im m in 1,...,I, m in 1,...,M)
setClass(Class = "Weights2",
representation = representation(alpha = "numeric", ## Intercept from output layer
alpha_1m = "vector", ## Intercept from first hidden layer
alpha_2h = "vector", ## Intercept from second hidden layer
w_h = "vector", ## weights from second hidden layer to output layer
q_mh = "matrix", ## weights from first hidden layer to second hidden layer
w_im = "matrix")) ## weights from input layer to first hidden layer
# define addition
setMethod("+", signature(e1 = "Weights2", e2 = "Weights2"), function (e1, e2) return(new("Weights2",
alpha = e1@alpha+e2@alpha,
alpha_1m = e1@alpha_1m+e2@alpha_1m,
alpha_2h = e1@alpha_2h+e2@alpha_2h,
w_h = e1@w_h+e2@w_h,
q_mh = e1@q_mh+e2@q_mh,
w_im = e1@w_im+e2@w_im)))
# define subtraction
setMethod("-", signature(e1 = "Weights2", e2 = "Weights2"), function (e1, e2) return(new("Weights2",
alpha = e1@alpha-e2@alpha,
alpha_1m = e1@alpha_1m-e2@alpha_1m,
alpha_2h = e1@alpha_2h-e2@alpha_2h,
w_h = e1@w_h-e2@w_h,
q_mh = e1@q_mh-e2@q_mh,
w_im = e1@w_im-e2@w_im)))
# define skalar multiplikation
setMethod("*", signature(e1 = "numeric", e2 = "Weights2"), function (e1, e2) return(new("Weights2",
alpha = e1*e2@alpha,
alpha_1m = e1*e2@alpha_1m,
alpha_2h = e1*e2@alpha_2h,
w_h = e1*e2@w_h,
q_mh = e1*e2@q_mh,
w_im = e1*e2@w_im)))
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