attribute.h

一个简单灵活的数据挖掘实验平台

/************************************************************************/
/*		AUTHOR:   Leiming Hong                                          */
/*		INST.:    South China Univ. of Tech.							*/
/*      Date:     2005-10-26                                            */
/*      FUNC:     Attribute used for parsering the mining vecotr  */      
/************************************************************************/
#ifndef _ATTRIBUTE_
#define _ATTRIBUTE_
#include <string>
#include <map>
using namespace std;
class Attribute
{
public:
	//: enum of the mining attribute type
	enum _At
	{
		nominal,
		numeric
	};
public:
	//: default for numeric type, name=""
	Attribute();
	Attribute(const string& name,_At type = _At::numeric);
	Attribute(const Attribute& attr);
	~Attribute();
public:
	//: tests if nominal type
	bool is_nominal() const;
	//: tests if numeric type
	bool is_numeric() const;
	//: gets the type of the attribute
	_At type() const;
	//: gets the distinct nominal count
	int nominal_count() const;
	//: maps a nominal string to an integer
	int nominal_value(const string& nom);
	//: adds a nominal string to the map 
	void add_nominal(const string& nom);
	//: gets the mining attribute's name
	string get_name() const;
	//: sets the mining attribute's name
	void set_name(const string& name);
protected:
	//: mining attribute name
	string _name;
	//: mining attribute type
	_At _type;
	//: nominal value maping(name values)
	map<string,int>* _nvs;
};
#endif