public static Session Session(Graph graph)
{
return(new Session(graph));
}
public static void _run_using_default_session(Operation operation, FeedItem[] feed_dict, Graph graph, Session session)
{
if (session == null)
{
session = get_default_session();
if (session == null)
{
throw new ValueError("Cannot execute operation using `run()`: No default " +
"session is registered. Use `with " +
"sess.as_default():` or pass an explicit session to " +
"`run(session=sess)`");
}
}
if (session.graph != graph)
{
throw new ValueError("Cannot use the default session to execute operation: " +
"the operation's graph is different from the " +
"session's graph. Pass an explicit session to " +
"run(session=sess).");
}
session.run(operation, feed_dict);
}
/// <summary>
/// Uses the default session to evaluate one or more tensors.
/// </summary>
/// <param name="tensors">A single Tensor, or a list of Tensor objects.</param>
/// <param name="feed_dict">
/// A dictionary that maps Tensor objects (or tensor names) to lists,
/// numpy ndarrays, TensorProtos, or strings.
/// </param>
/// <param name="graph">The graph in which the tensors are defined.</param>
/// <param name="session">A different session to use to evaluate "tensors".</param>
/// <returns>
/// Either a single numpy ndarray if "tensors" is a single tensor; or a list
/// of numpy ndarrays that each correspond to the respective element in
/// "tensors".
/// </returns>
public static NDArray _eval_using_default_session(Tensor tensor, FeedItem[] feed_dict, Graph graph, Session session = null)
{
if (session == null)
{
session = get_default_session();
if (session == null)
{
throw new ValueError("Cannot evaluate tensor using `eval()`: No default " +
"session is registered. Use `with " +
"sess.as_default()` or pass an explicit session to " +
"`eval(session=sess)`");
}
if (session.graph != graph)
{
throw new ValueError("Cannot use the default session to evaluate tensor: " +
"the tensor's graph is different from the session's " +
"graph. Pass an explicit session to " +
"`eval(session=sess)`.");
}
}
else
{
if (session.graph != graph)
{
throw new ValueError("Cannot use the default session to evaluate tensor: " +
"the tensor's graph is different from the session's " +
"graph. Pass an explicit session to " +
"`eval(session=sess)`.");
}
}
return(session.run(tensor, feed_dict));
}
public static OpDef _get_op_def(Graph graph, string type)
{
return(graph.GetOpDef(type));
}
public static Graph set_default_graph(Graph graph)
{
//TODO: original source does not have a 'set_default_graph' and indicates there should be a _default_graph_stack!
default_graph_stack.set_controller(graph);
return(default_graph_stack.get_controller());
}
public string write_graph(Graph graph, string logdir, string name, bool as_text = true) => graph_io.write_graph(graph, logdir, name, as_text);