3.1 Weight initialization 2 = (5) 2 = (6) + = | | ( ) (7) | | ( , ) cos + cos + cos = 1 ( ) = [| | ] [ ] (8) [ ] = 0 ( ) = [| | ] (9) [| | ] = 4 (10) ( ) = 4 (11) 2 ( ) = = 4 (12) + 1 = 2( + )