public void TestRegistryResolverModifyHierarchy()
{
Registry rootRegistry = new Registry(tags: "root");
RegistryResolver resolver = new RegistryResolver(rootRegistry);
Registry trainer1 = new Registry(rootRegistry, tags: "trainer");
Registry trainer2 = new Registry(rootRegistry, new[] { "trainer" });
Registry trainer1Architecture = new Registry(trainer1, new[] { "architecture" });
Registry trainer2Architecture = new Registry(trainer2, new[] { "architecture" });
rootRegistry["trainer1"] = trainer1;
rootRegistry["trainer2"] = trainer2;
trainer1["architecture"] = trainer1Architecture;
trainer2["architecture"] = trainer2Architecture;
trainer1Architecture["complexity"] = 2;
trainer2Architecture["complexity"] = 3;
Assert.AreEqual(new[] { 2, 3 }, resolver.ResolveGet <int>("*.architecture.complexity"));
Registry differentTrainer1Architecture = new Registry(trainer1, "architecture");
trainer1["architecture"] = differentTrainer1Architecture;
differentTrainer1Architecture["complexity"] = 5;
resolver.ResolveSet("*.architecture.complexity", 11, false, typeof(int));
Assert.AreEqual(new[] { 11, 11 }, resolver.ResolveGet <int>("*.architecture.complexity"));
}
public void TestWeightedNetworkMergerMerge()
{
INetworkMerger merger = new WeightedNetworkMerger(3, 8);
INetwork netA = NetworkMergerTestUtils.GenerateNetwork(1);
INetwork netB = NetworkMergerTestUtils.GenerateNetwork(9);
merger.AddMergeEntry("layers.*.weights");
merger.Merge(netA, netB);
IRegistryResolver resolverA = new RegistryResolver(netA.Registry);
IRegistryResolver resolverB = new RegistryResolver(netB.Registry);
INDArray weightsA = resolverA.ResolveGet <INDArray>("layers.*.weights")[0];
INDArray weightsB = resolverB.ResolveGet <INDArray>("layers.*.weights")[0];
float firstValueA = weightsA.GetValue <float>(0, 0);
float firstValueB = weightsB.GetValue <float>(0, 0);
// the first value will change
Assert.AreEqual(6.82, System.Math.Round(firstValueA * 100) / 100);
// the second net may not be changed
Assert.AreEqual(9, firstValueB);
merger.RemoveMergeEntry("layers.*.weights");
merger.Merge(netA, netB);
weightsA = resolverA.ResolveGet <INDArray>("layers.*.weights")[0];
firstValueA = weightsA.GetValue <float>(0, 0);
// may not change
Assert.AreEqual(6.82, System.Math.Round(firstValueA * 100) / 100);
}
public void TestAverageNetworkMergerMerge()
{
INetworkMerger merger = new AverageNetworkMerger();
INetwork netA = NetworkMergerTestUtils.GenerateNetwork(1);
INetwork netB = NetworkMergerTestUtils.GenerateNetwork(5);
merger.AddMergeEntry("layers.*.weights");
merger.Merge(netA, netB);
IRegistryResolver resolverA = new RegistryResolver(netA.Registry);
IRegistryResolver resolverB = new RegistryResolver(netB.Registry);
INDArray weightsA = resolverA.ResolveGet <INDArray>("layers.*.weights")[0];
INDArray weightsB = resolverB.ResolveGet <INDArray>("layers.*.weights")[0];
float firstValueA = weightsA.GetValue <float>(0, 0);
float firstValueB = weightsB.GetValue <float>(0, 0);
// the first value will change
Assert.AreEqual(3, firstValueA);
// the second net may not be changed
Assert.AreEqual(5, firstValueB);
merger.RemoveMergeEntry("layers.*.weights");
merger.Merge(netA, netB);
weightsA = resolverA.ResolveGet <INDArray>("layers.*.weights")[0];
firstValueA = weightsA.GetValue <float>(0, 0);
Assert.AreEqual(3, firstValueA);
}
private void ApplyValueModifiers(IRegistry localRegistry, IComputationHandler handler)
{
if (_valueModifiers.Count == 0)
{
return;
}
RegistryResolver resolver = new RegistryResolver(localRegistry);
foreach (string identifier in _valueModifiers.Keys)
{
string[] fullyResolvedIdentifiers;
object[] values = resolver.ResolveGet <object>(identifier, out fullyResolvedIdentifiers);
for (int i = 0; i < values.Length; i++)
{
object value = values[i];
INDArray asNDArray = value as INDArray;
INumber asNumber = value as INumber;
if (asNDArray != null)
{
foreach (IValueModifier modifier in _valueModifiers[identifier])
{
asNDArray = modifier.Modify(fullyResolvedIdentifiers[i], asNDArray, handler);
}
values[i] = asNDArray;
}
else if (asNumber != null)
{
foreach (IValueModifier modifier in _valueModifiers[identifier])
{
asNumber = modifier.Modify(fullyResolvedIdentifiers[i], asNumber, handler);
}
values[i] = asNumber;
}
else
{
double?asDouble = value as double?;
if (asDouble != null)
{
foreach (IValueModifier modifier in _valueModifiers[identifier])
{
asDouble = modifier.Modify(fullyResolvedIdentifiers[i], asDouble.Value, handler);
}
values[i] = asDouble.Value;
}
}
resolver.ResolveSet(fullyResolvedIdentifiers[i], values[i]);
}
}
}
public void TestRegistryResolverModifyDirect()
{
Registry rootRegistry = new Registry(tags: "root");
RegistryResolver resolver = new RegistryResolver(rootRegistry);
Registry trainer1 = new Registry(rootRegistry, tags: "trainer");
Registry trainer2 = new Registry(rootRegistry, tags: "trainer");
rootRegistry["trainer1"] = trainer1;
rootRegistry["trainer2"] = trainer2;
//declare parameters in registry
trainer1["accuracy"] = 0.0f;
trainer2["accuracy"] = 0.0f;
resolver.ResolveSet("trainer1.accuracy", 1.0f, false, typeof(float));
resolver.ResolveSet("trainer2.accuracy", 2.0f, false, typeof(float));
Assert.AreEqual(1.0f, resolver.ResolveGet <float>("trainer1.accuracy")[0]);
Assert.AreEqual(2.0f, resolver.ResolveGet <float>("trainer2.accuracy")[0]);
}
public void TestRegistryResolverModifyComplex()
{
Registry rootRegistry = new Registry(tags: "root");
RegistryResolver resolver = new RegistryResolver(rootRegistry);
Registry trainer1 = new Registry(rootRegistry, tags: "trainer");
Registry trainer2 = new Registry(rootRegistry, new[] { "trainer" });
Registry weirdtrainer = new Registry(rootRegistry, new[] { "trainer" });
Registry childRegistryToIgnore = new Registry(rootRegistry);
Registry trainer1Architecture = new Registry(trainer1, new[] { "architecture" });
Registry weirdarchitecture = new Registry(weirdtrainer, new[] { "architecture" });
rootRegistry["trainer1"] = trainer1;
rootRegistry["trainer2"] = trainer2;
rootRegistry["weirdtrainer"] = weirdtrainer;
rootRegistry["childtoignore"] = childRegistryToIgnore;
trainer1["architecture"] = trainer1Architecture;
weirdtrainer["architecture"] = weirdarchitecture;
trainer1Architecture["complexity"] = 2;
weirdarchitecture["complexity"] = 3;
trainer1["accuracy"] = 0.0f;
trainer2["accuracy"] = 0.0f;
resolver.ResolveSet("trainer*.accuracy", 1.0f, false, typeof(float));
resolver.ResolveSet("*<trainer>.*<architecture>.complexity", 9, false, typeof(int));
string[] resolved = null;
Assert.AreEqual(new[] { 1.0f, 1.0f }, resolver.ResolveGet <float>("trainer*.accuracy", out resolved));
Assert.AreEqual(new[] { "trainer1.accuracy", "trainer2.accuracy" }, resolved);
Assert.AreEqual(new[] { 9, 9 }, resolver.ResolveGet <int>("*<trainer>.architecture.complexity"));
Assert.AreEqual(new IRegistry[] { trainer1, trainer2, weirdtrainer }, resolver.ResolveGet <IRegistry>("*<trainer>", out resolved));
Assert.AreEqual(new[] { "trainer1", "trainer2", "weirdtrainer" }, resolved);
}
/// <summary>
/// Specify how multiple networks are merged into a single one. <see cref="root" /> is <em>not</em>
/// considered for the calculation. It is merely the storage container. (Although root can also be in
/// <see cref="networks" />).
/// </summary>
/// <param name="root">
/// The root network that will be modified. Since the <see cref="INetworkMerger" /> does not know how
/// to create a <see cref="INetwork" />, it will be passed not returned.
/// </param>
/// <param name="networks">
/// The networks that will be merged into the <see cref="root" />. Can contain <see cref="root" />
/// itself.
/// </param>
/// <param name="handler">
/// A handler can be specified optionally. If not passed (but required),
/// <see cref="ITraceable.AssociatedHandler" /> will be used.
/// </param>
public void Merge(INetwork root, IEnumerable <INetwork> networks, IComputationHandler handler = null)
{
IRegistryResolver rootResolver = new RegistryResolver(root.Registry);
string[] mergeKeys = CopyMatchIdentifiers();
if (mergeKeys.Length == 0)
{
Log.Warn($"Attempted merge network {root} with networks {networks} using handler {handler} but no merge keys were set so nothing will happen. This is probably not intended.");
}
// mapping of resolved mergeEnetry and all data
IDictionary <string, IList <object> > resolvedDataArrays = new Dictionary <string, IList <object> >(mergeKeys.Length);
int numNetworks = 0;
// fill the mapping of all values
foreach (INetwork network in networks)
{
IRegistryResolver resolver = new RegistryResolver(network.Registry);
foreach (string mergeKey in mergeKeys)
{
string[] fullyResolvedIdentifiers;
object[] values = resolver.ResolveGet <object>(mergeKey, out fullyResolvedIdentifiers);
Debug.Assert(fullyResolvedIdentifiers.Length == values.Length);
for (int i = 0; i < values.Length; i++)
{
IList <object> allValuesAtKey = resolvedDataArrays.TryGetValue(fullyResolvedIdentifiers[i], () => new List <object>());
allValuesAtKey.Add(values[i]);
}
}
numNetworks++;
}
foreach (KeyValuePair <string, IList <object> > keyDataPair in resolvedDataArrays)
{
int numObjects = keyDataPair.Value.Count;
if (numObjects != numNetworks)
{
_log.Warn($"Inconsistent network states for identifier \"{keyDataPair.Key}\", only {keyDataPair.Value.Count} have it but there are {numNetworks} networks.");
}
object merged = Merge(keyDataPair.Value.ToArray(), handler);
rootResolver.ResolveSet(keyDataPair.Key, merged);
}
}
private static void SampleNetworkArchitecture()
{
SigmaEnvironment sigma = SigmaEnvironment.Create("test");
IComputationHandler handler = new CpuFloat32Handler();
ITrainer trainer = sigma.CreateTrainer("test_trainer");
trainer.Network = new Network();
trainer.Network.Architecture = InputLayer.Construct(2, 2) +
ElementwiseLayer.Construct(2 * 2) +
FullyConnectedLayer.Construct(2) +
2 * (FullyConnectedLayer.Construct(4) + FullyConnectedLayer.Construct(2)) +
OutputLayer.Construct(2);
trainer.Network = (INetwork)trainer.Network.DeepCopy();
trainer.Operator = new CpuMultithreadedOperator(10);
trainer.AddInitialiser("*.weights", new GaussianInitialiser(standardDeviation: 0.1f));
trainer.AddInitialiser("*.bias*", new GaussianInitialiser(standardDeviation: 0.01f, mean: 0.03f));
trainer.Initialise(handler);
trainer.Network = (INetwork)trainer.Network.DeepCopy();
Console.WriteLine(trainer.Network.Registry);
IRegistryResolver resolver = new RegistryResolver(trainer.Network.Registry);
Console.WriteLine("===============");
object[] weights = resolver.ResolveGet <object>("layers.*.weights");
Console.WriteLine(string.Join("\n", weights));
Console.WriteLine("===============");
//foreach (ILayerBuffer buffer in trainer.Network.YieldLayerBuffersOrdered())
//{
// Console.WriteLine(buffer.Layer.Name + ": ");
// Console.WriteLine("inputs:");
// foreach (string input in buffer.Inputs.Keys)
// {
// Console.WriteLine($"\t{input}: {buffer.Inputs[input].GetHashCode()}");
// }
// Console.WriteLine("outputs:");
// foreach (string output in buffer.Outputs.Keys)
// {
// Console.WriteLine($"\t{output}: {buffer.Outputs[output].GetHashCode()}");
// }
//}
}
private void InitialiseNetwork(IComputationHandler handler, out int initialisedNumberCount, out int initialisedNDArrayCount)
{
Network.Initialise(handler);
initialisedNDArrayCount = 0;
initialisedNumberCount = 0;
RegistryResolver networkResolver = new RegistryResolver(Network.Registry.Get <IRegistry>("layers"));
List <string> orderedInitialiserIdentifiers = _initialisers.Keys.ToList();
orderedInitialiserIdentifiers.Sort(RegistryUtils.CompareIdentifierSpecificityAscending);
foreach (string identifier in orderedInitialiserIdentifiers)
{
object[] values = networkResolver.ResolveGet(identifier, new object[0]);
IInitialiser initialiser = _initialisers[identifier];
foreach (object value in values)
{
INDArray array = value as INDArray;
if (array != null)
{
initialiser.Initialise(array, handler, Sigma.Random);
initialisedNDArrayCount++;
}
else
{
INumber number = value as INumber;
if (number != null)
{
initialiser.Initialise(number, handler, Sigma.Random);
initialisedNumberCount++;
}
}
}
}
}
/// <summary>
/// Resolve all matching identifiers in this registry. For the detailed supported syntax <see cref="IRegistryResolver"/>.
/// </summary>
/// <typeparam name="T">The most specific common type of the variables to retrieve.</typeparam>
/// <param name="matchIdentifier">The full match identifier.</param>
/// <param name="values">An array of values found at the matching identifiers, filled with the values found at all matching identifiers (for reuse and optimisation if request is issued repeatedly).</param>
/// <returns>An array of values found at the matching identifiers. The parameter values is used if it is large enough and not null.</returns>
public T[] ResolveGet <T>(string matchIdentifier, T[] values = null)
{
return(RegistryResolver.ResolveGet(matchIdentifier, values));
}
/// <summary>
/// Resolve all matching identifiers in this registry. For the detailed supported syntax <see cref="IRegistryResolver"/>.
/// </summary>
/// <typeparam name="T">The most specific common type of the variables to retrieve.</typeparam>
/// <param name="matchIdentifier">The full match identifier.</param>
/// <param name="fullMatchedIdentifierArray">The fully matched identifiers corresponding to the given match identifier.</param>
/// <param name="values">An array of values found at the matching identifiers, filled with the values found at all matching identifiers (for reuse and optimisation if request is issued repeatedly).</param>
/// <returns>An array of values found at the matching identifiers. The parameter values is used if it is large enough and not null.</returns>
public T[] ResolveGet <T>(string matchIdentifier, out string[] fullMatchedIdentifierArray, T[] values = null)
{
return(RegistryResolver.ResolveGet(matchIdentifier, out fullMatchedIdentifierArray, values));
}