Sprt Class Reference

A Sequential Probability Ratio Test. More...

#include <sprt.h>

Classes
struct	Status

Public Types
enum	GameResult { NoResult, Win, Loss, Draw }
enum	Result { Continue, AcceptH0, AcceptH1 }

Public Member Functions
void	addGameResult (GameResult result)
void	initialize (double elo0, double elo1, double alpha, double beta)
bool	isNull () const
	Sprt ()
Status	status () const

Detailed Description

A Sequential Probability Ratio Test.

The Sprt class implements a Sequential Probability Ratio Test (SPRT) that can be used as a termination criterion for stopping a match between two players when the Elo difference is known to be outside of the specified interval.

See also

http://en.wikipedia.org/wiki/Sequential_probability_ratio_test

Member Enumeration Documentation

enum Sprt::GameResult

The result of a chess game.

Enumerator
NoResult	Game ended with no result.
Win	First player won.
Loss	First player lost.
Draw	Game was drawn.

enum Sprt::Result

The result of the test.

Enumerator
Continue	Continue monitoring.
AcceptH0	Accept null hypothesis H0.
AcceptH1	Accept alternative hypothesis H1.

Constructor & Destructor Documentation

Sprt::Sprt

(

)

Creates a new uninitialized Sprt object.

Member Function Documentation

void Sprt::addGameResult

(

GameResult

result

)

Updates the test with result.

After calling this function, status() should be called to check if H0 or H1 can be accepted.

void Sprt::initialize	(	double	elo0,
		double	elo1,
		double	alpha,
		double	beta
	)

Initializes the SPRT.

elo0 is the Elo difference between player A and player B for H0 and elo1 for H1.

alpha is the maximum probability for a type I error and beta for a type II error outside interval [elo0, elo1].

bool Sprt::isNull

(

)

const

Returns true if the SPRT is uninitialized; otherwise returns false.

Sprt::Status Sprt::status

(

)

const

Returns the current status of the test.

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The documentation for this class was generated from the following files:

• projects/lib/src/sprt.h
• projects/lib/src/sprt.cpp