public Mapper(IHostEnvironment env, SequentialAnomalyDetectionTransformBase <TInput, TState> parent, Schema inputSchema)
{
Contracts.CheckValue(env, nameof(env));
_host = env.Register(nameof(Mapper));
_host.CheckValue(inputSchema, nameof(inputSchema));
_host.CheckValue(parent, nameof(parent));
if (!inputSchema.TryGetColumnIndex(parent.InputColumnName, out _inputColumnIndex))
{
throw _host.ExceptSchemaMismatch(nameof(inputSchema), "input", parent.InputColumnName);
}
var colType = inputSchema[_inputColumnIndex].Type;
if (colType != NumberType.R4)
{
throw _host.ExceptSchemaMismatch(nameof(inputSchema), "input", parent.InputColumnName, NumberType.R4.ToString(), colType.ToString());
}
_parent = parent;
_parentSchema = inputSchema;
_slotNames = new VBuffer <ReadOnlyMemory <char> >(4, new[] { "Alert".AsMemory(), "Raw Score".AsMemory(),
"P-Value Score".AsMemory(), "Martingale Score".AsMemory() });
State = _parent.StateRef;
}
private protected override sealed void InitializeStateCore(bool disk = false)
{
Parent = (SequentialAnomalyDetectionTransformBase <TInput, TState>)ParentTransform;
Host.Assert(WindowSize >= 0);
if (disk == false)
{
if (Parent.Martingale != MartingaleType.None)
{
LogMartingaleUpdateBuffer = new FixedSizeQueue <Double>(WindowSize == 0 ? 1 : WindowSize);
}
else
{
LogMartingaleUpdateBuffer = new FixedSizeQueue <Double>(1);
}
RawScoreBuffer = new FixedSizeQueue <float>(WindowSize == 0 ? 1 : WindowSize);
_logMartingaleValue = 0;
}
InitializeAnomalyDetector();
}
