def net_shared_multi(h1dim=8, h2dim=4, h1multi=2, h2multi=4, k1=5, k2=10, bias=True):
net = FeedForwardNetwork()
# make modules
inp=LinearLayer(28*28,name='input')
h1=[SigmoidLayer(h1dim**2,name='hidden1st'+str(i)) for i in range(h1multi)]
h2=[SigmoidLayer(h2dim**2,name='hidden2nd'+str(j)) for j in range(h2multi)]
outp=SoftmaxLayer(10,name='output')
net.addInputModule(inp)
for i in range(h1multi):
net.addModule(h1[i])
for j in range(h2multi):
net.addModule(h2[j])
net.addOutputModule(outp)
if bias:
net.addModule(BiasUnit(name='bias'))
net.addConnection(FullConnection(net['bias'],outp))
# make connections
for i in range(h1multi):
net = shared_mesh(net, inlayer=inp, outlayer=h1[i], k=k1, mc_name='mother1st'+str(i), bias=bias)
for j in range(h2multi):
net = shared_mesh(net, inlayer=h1[i], outlayer=h2[j], k=k2, mc_name='mother2nd'+str(i)+'-'+str(j), bias=bias)
for j in range(h2multi):
net.addConnection(FullConnection(h2[j], outp))
net.sortModules()
return net
def net_shared2(h1dim=13,h2dim=5, bias=True): # alternative default: h1dim=8, h2dim=4,
net = FeedForwardNetwork()
# make modules
inp=LinearLayer(28*28,name='input')
h1=SigmoidLayer(h1dim**2,name='hidden1st')
h2=SigmoidLayer(h2dim**2,name='hidden2nd')
outp=SoftmaxLayer(10,name='output')
net.addInputModule(inp)
net.addModule(h1)
net.addModule(h2)
net.addOutputModule(outp)
if bias:
net.addModule(BiasUnit(name='bias'))
net.addConnection(FullConnection(net['bias'],outp))
# make connections
net = shared_mesh(net, inlayer=inp, outlayer=h1, k=5, mc_name='mother1st', bias=bias)
net = shared_mesh(net, inlayer=h1, outlayer=h2, k=5, mc_name='mother2nd', bias=bias)
net.addConnection(FullConnection(h2, outp))
net.sortModules()
return net
def net_shared(h1dim=8, bias=True):
net = FeedForwardNetwork()
# make modules
inp=LinearLayer(28*28,name='input')
h1=SigmoidLayer(h1dim**2,name='hidden')
outp=SoftmaxLayer(10,name='output')
net.addInputModule(inp)
net.addModule(h1)
net.addOutputModule(outp)
if bias:
net.addModule(BiasUnit(name='bias'))
net.addConnection(FullConnection(net['bias'],outp))
# make connections
net = shared_mesh(net, inlayer=inp, outlayer=h1, k=5, bias=bias)
net.addConnection(FullConnection(h1, outp))
net.sortModules()
return net
