kmeans++/KMeans.cpp File Reference

#include "KMeans.h"
#include <ctime>
#include <sstream>
#include <vector>
#include "KmTree.h"

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Macros
#define	LOG(verbose, text)

Functions
void	AddKMeansLogging (std::ostream *out, bool verbose)
void	ClearKMeansLogging ()
static double	GetSeconds ()
static void	RunKMeansOnce (const KmTree &tree, int n, int k, int d, Scalar *points, Scalar *centers, Scalar *min_cost, Scalar *max_cost, Scalar *total_cost, double start_time, double *min_time, double *max_time, double *total_time, Scalar *best_centers, int *best_assignment)
void	LogMetaStats (Scalar min_cost, Scalar max_cost, Scalar total_cost, double min_time, double max_time, double total_time, int num_attempts)
Scalar	RunKMeans (int n, int k, int d, Scalar *points, int attempts, Scalar *ret_centers, int *ret_assignment)
Scalar	RunKMeansPlusPlus (int n, int k, int d, Scalar *points, int attempts, Scalar *ret_centers, int *ret_assignment)

Variables
static vector< ostream * >	gLogOutputs
static vector< ostream * >	gVerboseLogOutputs

Macro Definition Documentation

LOG

#define LOG	(		verbose,
			text
	)

Value:

{                                                     \
        vector<ostream*>& outputs =                       \
            (verbose ? gVerboseLogOutputs : gLogOutputs); \
        if (outputs.size() > 0)                           \
        {                                                 \
            ostringstream string_stream;                  \
            string_stream << text;                        \
            for (int i = 0; i < (int)outputs.size(); i++) \
                *(outputs[i]) << string_stream.str();     \
        }                                                 \
    }

Definition at line 24 of file kmeans++/KMeans.cpp.

Referenced by LogMetaStats(), RunKMeans(), RunKMeansOnce(), and RunKMeansPlusPlus().

Function Documentation

AddKMeansLogging()

void AddKMeansLogging	(	std::ostream *	out,
		bool	verbose
	)

Definition at line 36 of file kmeans++/KMeans.cpp.

References gLogOutputs, and gVerboseLogOutputs.

ClearKMeansLogging()

void ClearKMeansLogging

(

)

Definition at line 41 of file kmeans++/KMeans.cpp.

References gLogOutputs, and gVerboseLogOutputs.

GetSeconds()

static double GetSeconds ( )

static

Definition at line 48 of file kmeans++/KMeans.cpp.

Referenced by RunKMeans(), RunKMeansOnce(), and RunKMeansPlusPlus().

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LogMetaStats()

void LogMetaStats	(	Scalar	min_cost,
		Scalar	max_cost,
		Scalar	total_cost,
		double	min_time,
		double	max_time,
		double	total_time,
		int	num_attempts
	)

Definition at line 103 of file kmeans++/KMeans.cpp.

References LOG.

Referenced by RunKMeans(), and RunKMeansPlusPlus().

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RunKMeans()

Scalar RunKMeans	(	int	n,
		int	k,
		int	d,
		Scalar *	points,
		int	attempts,
		Scalar *	ret_centers,
		int *	ret_assignment
	)

Definition at line 118 of file kmeans++/KMeans.cpp.

References GetRandom(), GetSeconds(), KM_ASSERT, LOG, LogMetaStats(), mrpt::system::os::memcpy(), and RunKMeansOnce().

Referenced by mrpt::math::detail::internal_kmeans< double >(), and mrpt::math::detail::internal_kmeans< float >().

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RunKMeansOnce()

static void RunKMeansOnce ( const KmTree &  tree, int  n, int  k, int  d, Scalar *  points, Scalar *  centers, Scalar *  min_cost, Scalar *  max_cost, Scalar *  total_cost, double  start_time, double *  min_time, double *  max_time, double *  total_time, Scalar *  best_centers, int *  best_assignment  )

static

Definition at line 55 of file kmeans++/KMeans.cpp.

References KmTree::DoKMeansStep(), GetSeconds(), LOG, mrpt::system::os::memcpy(), and void().

Referenced by RunKMeans(), and RunKMeansPlusPlus().

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RunKMeansPlusPlus()

Scalar RunKMeansPlusPlus	(	int	n,
		int	k,
		int	d,
		Scalar *	points,
		int	attempts,
		Scalar *	ret_centers,
		int *	ret_assignment
	)

Definition at line 177 of file kmeans++/KMeans.cpp.

References GetSeconds(), KM_ASSERT, LOG, LogMetaStats(), RunKMeansOnce(), and KmTree::SeedKMeansPlusPlus().

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Variable Documentation

gLogOutputs

vector<ostream*> gLogOutputs

static

Definition at line 22 of file kmeans++/KMeans.cpp.

Referenced by AddKMeansLogging(), and ClearKMeansLogging().

gVerboseLogOutputs

vector<ostream*> gVerboseLogOutputs

static

Definition at line 23 of file kmeans++/KMeans.cpp.

Referenced by AddKMeansLogging(), and ClearKMeansLogging().