X-Git-Url: https://fleuret.org/cgi-bin/gitweb/gitweb.cgi?a=blobdiff_plain;f=README.md;h=2ff5b9966b69eb4031506fd123b2fa2fc32bd961;hb=9dad4fa1118632bfa02c01e4d6a8a5a129061a54;hp=3b8d274294ac1316b5fbbb38e9228703cce89917;hpb=34eff36879f9b2fa3ec1130fccb723c5b907a586;p=dagnn.git diff --git a/README.md b/README.md index 3b8d274..2ff5b99 100644 --- a/README.md +++ b/README.md @@ -3,7 +3,7 @@ This package implements a new module nn.DAG which inherits from nn.Container and #Example# -The typical use is: +A typical use would be: ```Lua model = nn.DAG() @@ -11,41 +11,43 @@ model = nn.DAG() a = nn.Linear(100, 10) b = nn.ReLU() c = nn.Linear(10, 15) -d = nn.Linear(10, 15) -e = nn.CMulTable() -f = nn.Linear(15, 15) +d = nn.CMulTable() +e = nn.Linear(15, 15) -model:addEdge(a, b) -model:addEdge(b, c) -model:addEdge(b, d) -model:addEdge(c, e) -model:addEdge(d, e) -model:addEdge(d, f) +model:connect(a, b) +model:connect(b, nn.Linear(10, 15), nn.ReLU(), d) +model:connect(b, c) +model:connect(c, d) +model:connect(c, nn.Mul(-1), e) model:setInput(a) -model:setOutput({ e, f }) +model:setOutput({ d, e }) -input = torch.Tensor(300, 100):uniform() -output = model:updateOutput(input):clone() +input = torch.Tensor(30, 100):uniform() +output = model:updateOutput(input) ``` which would encode the following graph - +--> c ----> e --> - / / - / / - input --> a --> b ----> d ---+ output - \ + +- Linear(10, 10) -> ReLU ---> d --> + / / + / / + --> a --> b -----------> c --------------+ \ - +--> f --> + \ + +-- Mul(-1) --> e --> + +and run a forward pass with a random batch of 30 samples. + +Note that DAG:connect allows to add a bunch of edges at once. This is particularly useful to add anonymous modules which have a single predecessor and successor. #Input and output# -If a node has a single successor, its output is sent unchanged as input to that successor. If it has multiple successors, the outputs are collected into a table, and the table is used as input to the successor node. The indexes of the outputs in that table reflects the order in which they appear in the addEdge commands. +If a node has a single successor, its output is sent unchanged as input to that successor. If it has multiple successors, the outputs are collected into a table, and the table is used as input to the successor node. The indexes of the outputs in that table reflects the order of the DAG:connect() commands. The expected input (respectively the produced output) is a nested table of inputs reflecting the structure of the nested table of modules provided to DAG:setInput (respectively DAG:setOutput) -So for instance, in the example above, the DAG expects a tensor as input, since it is the input to the module a, and its output will is a table composed of two tensors, corresponding to the outputs of e and f respectively. +So for instance, in the example above, the model expects a tensor as input, since it is the input to the module a, and its output will is a table composed of two tensors, corresponding to the outputs of d and e respectively. -*Francois Fleuret, Jan 12th, 2017* +*Francois Fleuret, Jan 13th, 2017*