binarysplitter.cpp

粗糙集应用软件

//-------------------------------------------------------------------
// Author........: Aleksander 豩rn
// Date..........:
// Description...:
// Revisions.....:
//===================================================================

#include <stdafx.h> // Precompiled headers.
#include <copyright.h>

#include <kernel/algorithms/binarysplitter.h>
#include <kernel/algorithms/keyword.h>

#include <kernel/structures/decisiontable.h>
#include <kernel/structures/decisiontables.h>
#include <kernel/structures/dictionary.h>
#include <kernel/structures/attribute.h>

#include <kernel/utilities/rng.h>
#include <kernel/utilities/mathkit.h>
#include <kernel/utilities/creator.h>

#include <kernel/basic/message.h>

//-------------------------------------------------------------------
// Methods for class BinarySplitter.
//===================================================================

//-------------------------------------------------------------------
// Constructors/destructor.
//===================================================================

BinarySplitter::BinarySplitter() {
	SetSeed(1);
	SetSplittingFactor(0.5);
}

BinarySplitter::~BinarySplitter() {
}

//-------------------------------------------------------------------
// Methods inherited from Identifier.
//===================================================================

IMPLEMENTIDMETHODS(BinarySplitter, BINARYSPLITTER, Splitter)

//-------------------------------------------------------------------
// Methods inherited from Algorithm.
//===================================================================

//-------------------------------------------------------------------
// Method........: GetParameters
// Author........: Aleksander 豩rn
// Date..........:
// Description...:
// Comments......:
// Revisions.....:
//===================================================================

String
BinarySplitter::GetParameters() const {

	String parameters;

	parameters += Keyword::Seed();
	parameters += Keyword::Assignment();
	parameters += String::Format(GetSeed());

	parameters += Keyword::Separator();

	parameters += Keyword::Factor();
	parameters += Keyword::Assignment();
	parameters += String::Format(GetSplittingFactor());

	parameters += Keyword::Separator();

	parameters += Splitter::GetParameters();

	return parameters;

}

//-------------------------------------------------------------------
// Method........: SetParameter
// Author........: Aleksander 豩rn
// Date..........:
// Description...:
// Comments......:
// Revisions.....:
//===================================================================

bool
BinarySplitter::SetParameter(const String &keyword, const String &value) {

	if (keyword == Keyword::Seed() && value.IsInteger())
		return SetSeed(value.GetInteger());

	if (keyword == Keyword::Factor() && value.IsFloat())
		return SetSplittingFactor(value.GetFloat());

	return Splitter::SetParameter(keyword, value);

}

//-------------------------------------------------------------------
// Method........: Apply
// Author........: Aleksander 豩rn
// Date..........:
// Description...: Takes a decision table as input and splits it
//                 in two according to some splitting scheme.
//
//                 If specified, the resulting subtables are appended
//                 to the input table as children, and the input table
//                 itself is returned.  Alternatively, the subtables are
//                 not appended as children, but are instead returned as
//                 a decision table set.
//
// Comments......: Assumes that library clients use handles.
// Revisions.....: A