tensornetwork.contractors.custom¶
-
tensornetwork.contractors.
custom
(nodes: Iterable[tensornetwork.network_components.AbstractNode], optimizer: Any, output_edge_order: Sequence[tensornetwork.network_components.Edge] = None, memory_limit: Optional[int] = None, ignore_edge_order: bool = False) → tensornetwork.network_components.AbstractNode¶ Uses a custom path optimizer created by the user to calculate paths.
The custom path optimizer should inherit
opt_einsum
’sPathOptimizer
. See custom paths.Parameters: - nodes – an iterable of Nodes
- output_edge_order – An optional list of edges.
Edges of the final node in
nodes_set
are reordered intooutput_edge_order
; if final node has more than one edge, output_edge_order` must be provided. - optimizer – A custom
opt_einsum.PathOptimizer
object. - memory_limit – Maximum number of elements in an array during contractions.
- ignore_edge_order – An option to ignore the output edge order.
Returns: Final node after full contraction.