X-Git-Url: https://www.fleuret.org/cgi-bin/gitweb/gitweb.cgi?a=blobdiff_plain;f=README.md;h=73d08ff87a55d5053a8263be3fbfd6377f1d858c;hb=78671207db483567021a935d0738ba85d8b16551;hp=fbb7a96039cb55dbca12ea20942878443544b3e8;hpb=125002d32a2c9ea88bdbc722a888d3788901fc27;p=dagnn.git diff --git a/README.md b/README.md index fbb7a96..73d08ff 100644 --- a/README.md +++ b/README.md @@ -1,9 +1,8 @@ - # Introduction # -This package implements a new module nn.DAG for the torch framework, -which inherits from nn.Container and allows to combine modules in an -arbitrary graph without cycle. +This package implements a new module nn.DAG for the [torch framework](https://torch.ch), +which inherits from [nn.Container](https://github.com/torch/nn/blob/master/Container.lua) and allows to combine modules in an +arbitrary [Directed Acyclic Graph (DAG).](https://en.wikipedia.org/wiki/Directed_acyclic_graph) ## Example ## @@ -67,7 +66,7 @@ table of inputs reflecting the structure of the nested table of modules given as argument to DAG:setInput (respectively DAG:setOutput) 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 +input, since it is the input to the module a, and its output is a table composed of two tensors, corresponding to the outputs of d and e respectively. @@ -80,17 +79,24 @@ Create a new empty DAG, which inherits from nn.Container. ### nn.DAG:connect([module1 [, module2 [, ...]]]) ### Add new nodes corresponding to the modules passed as arguments if they -are not already existing. Add edges between every two nodes -corresponding to a pair of successive modules in the arguments. +have not been already added in a previous call. Add edges between +every two nodes associated to two successive modules in the +arguments. + +Calling this function with n > 2 arguments is strictly equivalent to +calling it n-1 times on the pairs of successive arguments. -Calling it with n > 2 arguments is strictly equivalent to calling it -n-1 times on the pairs of successive arguments. +Accepting more than two arguments allows in particular to add +anonymous modules, which are not associated to variables. In +principle the only non-anonymous ones are those that have more than +one successor / predecessor and the inputs / outputs. ### nn.DAG:setInput(i) ### -Defines the content and structure of the input. The argument should be +Define the content and structure of the input. The argument should be either a module, or a (nested) table of modules. The input to the DAG -should be a (nested) table of inputs, with the corresponding structure. +should be a (nested) table of inputs, with the corresponding +structure. ### nn.DAG:setOutput(o) ### @@ -98,7 +104,7 @@ Similar to DAG:setInput(). ### nn.DAG:print() ### -Prints the list of nodes. +Print the list of nodes. ### nn.DAG:saveDot(filename) ### @@ -109,6 +115,3 @@ a pdf file with ``` dot graph.dot -T pdf -o graph.pdf ``` - --- -*Francois Fleuret, Jan 13th, 2017*