/// <summary>
/// Load param and model from a model directory
/// </summary>
/// <param name="model_dir">directory containing param and model (graphdef) file</param>
/// <returns>true if successful, false if failed</returns>
public virtual bool Load(string model_dir)
{
bool result = false;
try
{
string param_file = Path.Combine(model_dir, "params.json");
// looks for params.json file, load model
string params_json = File.ReadAllText(param_file);
_params = JsonConvert.DeserializeObject <Dictionary <string, object> >(params_json);
_prefix = (string)(_params["model_name"]);
string graphdef_filepath = Path.Combine(model_dir, _prefix + ".graphdef");
_graph = new TFGraph();
TFImportGraphDefOptions opts = new TFImportGraphDefOptions();
TFBuffer buff = new TFBuffer(File.ReadAllBytes(graphdef_filepath));
opts.SetPrefix(_prefix);
_graph.Import(buff, opts);
_session = new TFSession(_graph);
result = true;
} catch (Exception)
{
// somethign went wrong
}
return(result);
}
public override void Initialize()
{
string vocab_json = File.ReadAllText("vocab.json");
_vocab = JsonConvert.DeserializeObject <Dictionary <string, int> >(vocab_json);
_graph = new TFGraph();
TFImportGraphDefOptions opts = new TFImportGraphDefOptions();
TFBuffer buff = new TFBuffer(File.ReadAllBytes("commaV5.graphdef"));
opts.SetPrefix(_prefix);
_graph.Import(buff, opts);
_session = new TFSession(_graph);
}
public void TestImportGraphDef()
{
var status = new TFStatus();
TFBuffer graphDef;
// Create graph with two nodes, "x" and "3"
using (var graph = new TFGraph())
{
Assert(status);
Placeholder(graph, status);
Assert(graph["feed"] != null);
ScalarConst(3, graph, status);
Assert(graph["scalar"] != null);
// Export to GraphDef
graphDef = new TFBuffer();
graph.ToGraphDef(graphDef, status);
Assert(status);
}
// Import it again, with a prefix, in a fresh graph
using (var graph = new TFGraph())
{
using (var options = new TFImportGraphDefOptions())
{
options.SetPrefix("imported");
graph.Import(graphDef, options, status);
Assert(status);
}
graphDef.Dispose();
var scalar = graph["imported/scalar"];
var feed = graph["imported/feed"];
Assert(scalar != null);
Assert(feed != null);
// Can add nodes to the imported graph without trouble
Add(feed, scalar, graph, status);
Assert(status);
}
}