Package org.nd4j.linalg.checkutil

Class CheckUtil

java.lang.Object

org.nd4j.linalg.checkutil.CheckUtil

public class CheckUtil
extends Object

Constructor Summary

Constructors

Constructor	Description
CheckUtil()

Method Summary

Modifier and Type	Method	Description
static boolean	checkAdd(INDArray first, INDArray second, double maxRelativeDifference, double minAbsDifference)	Same as checkMmul, but for matrix addition
static boolean	checkDivManually(INDArray first, INDArray second, double maxRelativeDifference, double minAbsDifference)
static boolean	checkEntries(org.apache.commons.math3.linear.RealMatrix rmResult, INDArray result, double maxRelativeDifference, double minAbsDifference)
static boolean	checkEntries(INDArray expected, INDArray actual, double maxRelativeDifference, double minAbsDifference)
static boolean	checkGemm(INDArray a, INDArray b, INDArray c, boolean transposeA, boolean transposeB, double alpha, double beta, double maxRelativeDifference, double minAbsDifference)
static boolean	checkMmul(INDArray first, INDArray second, double maxRelativeDifference, double minAbsDifference)	Check first.mmul(second) using Apache commons math mmul.
static boolean	checkMulManually(INDArray first, INDArray second, double maxRelativeDifference, double minAbsDifference)
static boolean	checkSubtract(INDArray first, INDArray second, double maxRelativeDifference, double minAbsDifference)	Same as checkMmul, but for matrix subtraction
static INDArray	convertFromApacheMatrix(org.apache.commons.math3.linear.RealMatrix matrix, DataType dataType)
static org.apache.commons.math3.linear.RealMatrix	convertToApacheMatrix(INDArray matrix)
static void	printApacheMatrix(org.apache.commons.math3.linear.RealMatrix matrix)
static void	printFailureDetails(INDArray first, INDArray second, org.apache.commons.math3.linear.RealMatrix expected, INDArray actual, INDArray onCopies, String op)
static void	printFailureDetails(INDArray first, INDArray second, INDArray expected, INDArray actual, INDArray onCopies, String op)
static void	printGemmFailureDetails(INDArray a, INDArray b, INDArray c, boolean transposeA, boolean transposeB, double alpha, double beta, org.apache.commons.math3.linear.RealMatrix expected, INDArray actual, INDArray onCopies)
static void	printMatrixFullPrecision(INDArray matrix)
static void	printNDArrayHeader(INDArray array)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CheckUtil

public CheckUtil()

Method Detail

checkMmul

public static boolean checkMmul(INDArray first,
                                INDArray second,
                                double maxRelativeDifference,
                                double minAbsDifference)

Check first.mmul(second) using Apache commons math mmul. Float/double matrices only.
Returns true if OK, false otherwise.
Checks each element according to relative error (|a-b|/(|a|+|b|); however absolute error |a-b| must also exceed minAbsDifference for it to be considered a failure. This is necessary to avoid instability near 0: i.e., Nd4j mmul might return element of 0.0 (due to underflow on float) while Apache commons math mmul might be say 1e-30 or something (using doubles). Throws exception if matrices can't be multiplied Checks each element of the result. If

Parameters:

first - First matrix

second - Second matrix

maxRelativeDifference - Maximum relative error

minAbsDifference - Minimum absolute difference for failure

Returns:

true if OK, false if result incorrect

checkGemm

public static boolean checkGemm(INDArray a,
                                INDArray b,
                                INDArray c,
                                boolean transposeA,
                                boolean transposeB,
                                double alpha,
                                double beta,
                                double maxRelativeDifference,
                                double minAbsDifference)

checkAdd

public static boolean checkAdd(INDArray first,
                               INDArray second,
                               double maxRelativeDifference,
                               double minAbsDifference)

Same as checkMmul, but for matrix addition

checkSubtract

public static boolean checkSubtract(INDArray first,
                                    INDArray second,
                                    double maxRelativeDifference,
                                    double minAbsDifference)

Same as checkMmul, but for matrix subtraction

checkMulManually

public static boolean checkMulManually(INDArray first,
                                       INDArray second,
                                       double maxRelativeDifference,
                                       double minAbsDifference)

checkDivManually

public static boolean checkDivManually(INDArray first,
                                       INDArray second,
                                       double maxRelativeDifference,
                                       double minAbsDifference)

checkEntries

public static boolean checkEntries(org.apache.commons.math3.linear.RealMatrix rmResult,
                                   INDArray result,
                                   double maxRelativeDifference,
                                   double minAbsDifference)

checkEntries

public static boolean checkEntries(INDArray expected,
                                   INDArray actual,
                                   double maxRelativeDifference,
                                   double minAbsDifference)

convertToApacheMatrix

public static org.apache.commons.math3.linear.RealMatrix convertToApacheMatrix(INDArray matrix)

convertFromApacheMatrix

public static INDArray convertFromApacheMatrix(org.apache.commons.math3.linear.RealMatrix matrix,
                                               DataType dataType)

printFailureDetails

public static void printFailureDetails(INDArray first,
                                       INDArray second,
                                       org.apache.commons.math3.linear.RealMatrix expected,
                                       INDArray actual,
                                       INDArray onCopies,
                                       String op)

printGemmFailureDetails

public static void printGemmFailureDetails(INDArray a,
                                           INDArray b,
                                           INDArray c,
                                           boolean transposeA,
                                           boolean transposeB,
                                           double alpha,
                                           double beta,
                                           org.apache.commons.math3.linear.RealMatrix expected,
                                           INDArray actual,
                                           INDArray onCopies)

printMatrixFullPrecision

public static void printMatrixFullPrecision(INDArray matrix)

printNDArrayHeader

public static void printNDArrayHeader(INDArray array)

printFailureDetails

public static void printFailureDetails(INDArray first,
                                       INDArray second,
                                       INDArray expected,
                                       INDArray actual,
                                       INDArray onCopies,
                                       String op)

printApacheMatrix

public static void printApacheMatrix(org.apache.commons.math3.linear.RealMatrix matrix)