item.cpp

使用C++STL实现的关联规则挖掘Apriori算法

/*----------------------------------------------------------------------
  File     : Item.cpp
  Contents : itemset management
  Author   : Bart Goethals
  Update   : 4/4/2003 
----------------------------------------------------------------------*/

#include "Item.h"

set<Item> *Item::makeChildren() const
{
	if(children) return children;
	return children = new set<Item>;
}

int Item::deleteChildren() const
{
	int deleted=0;

	if(children)
	{
		for(set<Item>::iterator it = children->begin(); it != children->end(); it++)
		{
			deleted += it->deleteChildren();
		}
		delete children;
		children = 0;
		deleted++;
	}

	return deleted;
}