private OvaPredictor(IHostEnvironment env, ModelLoadContext ctx)
: base(env, RegistrationName, ctx)
{
// *** Binary format ***
// bool: useDist
// int: predictor count
bool useDist = ctx.Reader.ReadBoolByte();
int len = ctx.Reader.ReadInt32();
Host.CheckDecode(len > 0);
if (useDist)
{
var predictors = new IValueMapperDist[len];
LoadPredictors(Host, predictors, ctx);
_impl = new ImplDist(predictors);
}
else
{
var predictors = new TScalarPredictor[len];
LoadPredictors(Host, predictors, ctx);
_impl = new ImplRaw(predictors);
}
OutputType = new VectorType(NumberType.Float, _impl.Predictors.Length);
}
private OneVersusAllModelParameters(IHostEnvironment env, ModelLoadContext ctx)
: base(env, RegistrationName, ctx)
{
// *** Binary format ***
// byte: OutputFormula as byte
// int: predictor count
OutputFormula outputFormula = (OutputFormula)ctx.Reader.ReadByte();
int len = ctx.Reader.ReadInt32();
Host.CheckDecode(len > 0);
if (outputFormula == OutputFormula.Raw)
{
var predictors = new TScalarPredictor[len];
LoadPredictors(Host, predictors, ctx);
_impl = new ImplRaw(predictors);
}
else if (outputFormula == OutputFormula.ProbabilityNormalization)
{
var predictors = new IValueMapperDist[len];
LoadPredictors(Host, predictors, ctx);
_impl = new ImplDist(predictors);
}
else if (outputFormula == OutputFormula.Softmax)
{
var predictors = new TScalarPredictor[len];
LoadPredictors(Host, predictors, ctx);
_impl = new ImplSoftmax(predictors);
}
DistType = new VectorDataViewType(NumberDataViewType.Single, _impl.Predictors.Length);
}
private OptimizedOVAPredictor(IHostEnvironment env, ImplBase impl) : base(env, RegistrationName)
{
Host.AssertValue(impl, "impl");
Host.Assert(Utils.Size(impl.Predictors) > 0);
_impl = impl;
_outputType = new VectorDataViewType(NumberDataViewType.Single, _impl.Predictors.Length);
}
private OvaPredictor(IHostEnvironment env, ImplBase impl)
: base(env, RegistrationName)
{
Host.AssertValue(impl, nameof(impl));
Host.Assert(Utils.Size(impl.Predictors) > 0);
_impl = impl;
OutputType = new VectorType(NumberType.Float, _impl.Predictors.Length);
}
private OneVersusAllModelParameters(IHostEnvironment env, ImplBase impl)
: base(env, RegistrationName)
{
Host.AssertValue(impl, nameof(impl));
Host.Assert(Utils.Size(impl.Predictors) > 0);
_impl = impl;
DistType = new VectorDataViewType(NumberDataViewType.Single, _impl.Predictors.Length);
}
protected ImplBase(ImplBase <TOptions> impl, string name)
{
Contracts.CheckValue(impl, nameof(impl));
Contracts.AssertValue(impl.Host);
impl.Host.AssertValue(impl.ImplOptions);
impl.Host.AssertValue(name);
ImplOptions = impl.ImplOptions;
Host = impl.Host.Register(name);
}
protected ImplBase(ImplBase <TArgs> impl, string name)
{
Contracts.CheckValue(impl, nameof(impl));
Contracts.AssertValue(impl.Host);
impl.Host.AssertValue(impl.Args);
impl.Host.AssertValue(name);
Args = impl.Args;
Host = impl.Host.Register(name);
}
/// <summary>Constructor used by <see cref="ThreadSafeRandom"/>.</summary>
/// <param name="isThreadSafeRandom">Must be true.</param>
protected private Random(bool isThreadSafeRandom)
{
Debug.Assert(isThreadSafeRandom);
_impl = null !; // base implementation isn't used at all
}
