I'd like to have a convolutional layer with 3 outputs o1,o2,o3, and 9 inputs i1,,,i9, so that
o1=k11 i1+k12 i2+k13 i3,
o2=k21 i4+k22 i5+k23 i6,
o3=k31 i7+k32 i8+k33 i9
where the ks are either 3 kernels or 1, I don't care. I am getting an error. Please let me know how to do it right.