struct

`SushiAI::Autograd::Provenance`

Records, for every node differentiate() appended, the forward node it serves.

Public attributes

std::size_t forward_node_count = 0

Node count of the graph before differentiation; the first backward id.

std::vector< Graph::NodeId > origin

Origins in append order: origin[i] belongs to node forward_node_count + i.

Graph::NodeId origin_of(Graph::NodeId backward_node) const

Returns the forward node that backward_node was emitted for.

Parameters