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Fixed model.fit return results. #927 · MSavameri/TensorFlow.NET@c5cdf2c · GitHub

/ TensorFlow.NET Public
forked from SciSharp/TensorFlow.NET

Commit c5cdf2c

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Oceania2018
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Fixed model.fit return results. SciSharp#927 
1 parent f48ba40 commit c5cdf2c

11 files changed

Lines changed: 258 additions & 63 deletions

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‎src/TensorFlowNET.Core/NumPy/Numpy.Manipulation.cs‎

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@@ -8,6 +8,10 @@ namespace Tensorflow.NumPy
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{
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public partial class np
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{
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[AutoNumPy]
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public static NDArray concatenate((NDArray, NDArray) tuple, int axis = 0)
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=> new NDArray(array_ops.concat(new[] { tuple.Item1, tuple.Item2 }, axis));
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[AutoNumPy]
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public static NDArray concatenate(NDArray[] arrays, int axis = 0) => new NDArray(array_ops.concat(arrays, axis));
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‎src/TensorFlowNET.Keras/Callbacks/CallbackList.cs‎

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using System;
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using System.Collections.Generic;
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using System.Text;
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namespace Tensorflow.Keras.Callbacks
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{
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public class CallbackList
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{
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List<ICallback> callbacks = new List<ICallback>();
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public History History => callbacks[0] as History;
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public CallbackList(CallbackParams parameters)
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{
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callbacks.Add(new History(parameters));
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callbacks.Add(new ProgbarLogger(parameters));
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}
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public void on_train_begin()
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{
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callbacks.ForEach(x => x.on_train_begin());
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}
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public void on_epoch_begin(int epoch)
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{
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callbacks.ForEach(x => x.on_epoch_begin(epoch));
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}
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public void on_train_batch_begin(long step)
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{
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callbacks.ForEach(x => x.on_train_batch_begin(step));
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}
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public void on_train_batch_end(long end_step, Dictionary<string, float> logs)
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{
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callbacks.ForEach(x => x.on_train_batch_end(end_step, logs));
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}
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public void on_epoch_end(int epoch, Dictionary<string, float> epoch_logs)
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{
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callbacks.ForEach(x => x.on_epoch_end(epoch, epoch_logs));
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}
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}
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}

‎src/TensorFlowNET.Keras/Callbacks/CallbackParams.cs‎

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using System;
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using System.Collections.Generic;
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using System.Text;
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using Tensorflow.Keras.Engine;
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namespace Tensorflow.Keras.Callbacks
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{
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public class CallbackParams
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{
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public IModel Model { get; set; }
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public int Verbose { get; set; }
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public int Epochs { get; set; }
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public long Steps { get; set; }
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}
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}

‎src/TensorFlowNET.Keras/Callbacks/History.cs‎

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using System;
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using System.Collections.Generic;
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using System.Text;
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namespace Tensorflow.Keras.Callbacks
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{
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public class History : ICallback
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{
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List<int> epochs;
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CallbackParams _parameters;
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public Dictionary<string, List<float>> history { get; set; }
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public History(CallbackParams parameters)
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{
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_parameters = parameters;
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}
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public void on_train_begin()
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{
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epochs = new List<int>();
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history = new Dictionary<string, List<float>>();
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}
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public void on_epoch_begin(int epoch)
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{
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}
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public void on_train_batch_begin(long step)
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{
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}
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public void on_train_batch_end(long end_step, Dictionary<string, float> logs)
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{
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}
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public void on_epoch_end(int epoch, Dictionary<string, float> epoch_logs)
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{
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epochs.Add(epoch);
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foreach (var log in epoch_logs)
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{
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if (!history.ContainsKey(log.Key))
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{
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history[log.Key] = new List<float>();
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}
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history[log.Key].Add((float)log.Value);
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}
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}
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}
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}

‎src/TensorFlowNET.Keras/Callbacks/ICallback.cs‎

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using System;
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using System.Collections.Generic;
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using System.Text;
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namespace Tensorflow.Keras.Callbacks
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{
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public interface ICallback
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{
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void on_train_begin();
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void on_epoch_begin(int epoch);
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void on_train_batch_begin(long step);
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void on_train_batch_end(long end_step, Dictionary<string, float> logs);
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void on_epoch_end(int epoch, Dictionary<string, float> epoch_logs);
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}
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}

‎src/TensorFlowNET.Keras/Callbacks/ProgbarLogger.cs‎

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using PureHDF;
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Linq;
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using System.Text;
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8+
namespace Tensorflow.Keras.Callbacks
9+
{
10+
public class ProgbarLogger : ICallback
11+
{
12+
bool _called_in_fit = false;
13+
int seen = 0;
14+
CallbackParams _parameters;
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Stopwatch _sw;
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public ProgbarLogger(CallbackParams parameters)
18+
{
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_parameters = parameters;
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}
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public void on_train_begin()
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{
24+
_called_in_fit = true;
25+
_sw = new Stopwatch();
26+
}
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28+
public void on_epoch_begin(int epoch)
29+
{
30+
_reset_progbar();
31+
_maybe_init_progbar();
32+
Binding.tf_output_redirect.WriteLine($"Epoch: {epoch + 1:D3}/{_parameters.Epochs:D3}");
33+
}
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35+
public void on_train_batch_begin(long step)
36+
{
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_sw.Restart();
38+
}
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40+
public void on_train_batch_end(long end_step, Dictionary<string, float> logs)
41+
{
42+
_sw.Stop();
43+
var elapse = _sw.ElapsedMilliseconds;
44+
var results = string.Join(" - ", logs.Select(x => $"{x.Key}: {(float)x.Value:F6}"));
45+
46+
var progress = "";
47+
var length = 30.0 / _parameters.Steps;
48+
for (int i = 0; i < Math.Floor(end_step * length - 1); i++)
49+
progress += "=";
50+
if (progress.Length < 28)
51+
progress += ">";
52+
else
53+
progress += "=";
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55+
var remaining = "";
56+
for (int i = 1; i < 30 - progress.Length; i++)
57+
remaining += ".";
58+
59+
Binding.tf_output_redirect.Write($"{end_step + 1:D4}/{_parameters.Steps:D4} [{progress}{remaining}] - {elapse}ms/step - {results}");
60+
if (!Console.IsOutputRedirected)
61+
{
62+
Console.CursorLeft = 0;
63+
}
64+
}
65+
66+
public void on_epoch_end(int epoch, Dictionary<string, float> epoch_logs)
67+
{
68+
Console.WriteLine();
69+
}
70+
71+
void _reset_progbar()
72+
{
73+
seen = 0;
74+
}
75+
76+
void _maybe_init_progbar()
77+
{
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79+
}
80+
}
81+
}

‎src/TensorFlowNET.Keras/Engine/Model.Evaluate.cs‎

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Original file line numberDiff line numberDiff line change
@@ -31,7 +31,7 @@ public void evaluate(NDArray x, NDArray y,
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bool use_multiprocessing = false,
3232
bool return_dict = false)
3333
{
34-
data_handler = new DataHandler(new DataHandlerArgs
34+
var data_handler = new DataHandler(new DataHandlerArgs
3535
{
3636
X = x,
3737
Y = y,
@@ -46,7 +46,6 @@ public void evaluate(NDArray x, NDArray y,
4646
StepsPerExecution = _steps_per_execution
4747
});
4848

49-
Binding.tf_output_redirect.WriteLine($"Testing...");
5049
foreach (var (epoch, iterator) in data_handler.enumerate_epochs())
5150
{
5251
reset_metrics();
@@ -56,22 +55,20 @@ public void evaluate(NDArray x, NDArray y,
5655
foreach (var step in data_handler.steps())
5756
{
5857
// callbacks.on_train_batch_begin(step)
59-
results = test_function(iterator);
58+
results = test_function(data_handler, iterator);
6059
}
61-
Binding.tf_output_redirect.WriteLine($"iterator: {epoch + 1}, " + string.Join(", ", results.Select(x => $"{x.Item1}: {(float)x.Item2}")));
6260
}
6361
}
6462

6563
public KeyValuePair<string, float>[] evaluate(IDatasetV2 x)
6664
{
67-
data_handler = new DataHandler(new DataHandlerArgs
65+
var data_handler = new DataHandler(new DataHandlerArgs
6866
{
6967
Dataset = x,
7068
Model = this,
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StepsPerExecution = _steps_per_execution
7270
});
7371

74-
Binding.tf_output_redirect.WriteLine($"Testing...");
7572
IEnumerable<(string, Tensor)> logs = null;
7673
foreach (var (epoch, iterator) in data_handler.enumerate_epochs())
7774
{
@@ -82,22 +79,21 @@ public KeyValuePair<string, float>[] evaluate(IDatasetV2 x)
8279
foreach (var step in data_handler.steps())
8380
{
8481
// callbacks.on_train_batch_begin(step)
85-
logs = test_function(iterator);
82+
logs = test_function(data_handler, iterator);
8683
}
87-
Binding.tf_output_redirect.WriteLine($"iterator: {epoch + 1}, " + string.Join(", ", logs.Select(x => $"{x.Item1}: {(float)x.Item2}")));
8884
}
8985
return logs.Select(x => new KeyValuePair<string, float>(x.Item1, (float)x.Item2)).ToArray();
9086
}
9187

92-
IEnumerable<(string, Tensor)> test_function(OwnedIterator iterator)
88+
IEnumerable<(string, Tensor)> test_function(DataHandler data_handler, OwnedIterator iterator)
9389
{
9490
var data = iterator.next();
95-
var outputs = test_step(data[0], data[1]);
91+
var outputs = test_step(data_handler, data[0], data[1]);
9692
tf_with(ops.control_dependencies(new object[0]), ctl => _test_counter.assign_add(1));
9793
return outputs;
9894
}
9995

100-
List<(string, Tensor)> test_step(Tensor x, Tensor y)
96+
List<(string, Tensor)> test_step(DataHandler data_handler, Tensor x, Tensor y)
10197
{
10298
(x, y) = data_handler.DataAdapter.Expand1d(x, y);
10399
var y_pred = Apply(x, training: false);

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