本文整理汇总了Java中mikera.matrixx.AMatrix.copyColumnTo方法的典型用法代码示例。如果您正苦于以下问题：Java AMatrix.copyColumnTo方法的具体用法？Java AMatrix.copyColumnTo怎么用？Java AMatrix.copyColumnTo使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类mikera.matrixx.AMatrix的用法示例。
在下文中一共展示了AMatrix.copyColumnTo方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: directMultiply
import mikera.matrixx.AMatrix; //导入方法依赖的package包/类
public static Matrix directMultiply(Matrix a, AMatrix b) {
int rc=a.rowCount();
int cc=b.columnCount();
int ic=a.columnCount();
if ((ic!=b.rowCount())) {
throw new IllegalArgumentException(ErrorMessages.incompatibleShapes(a,b));
}
Matrix result=Matrix.create(rc,cc);
double[] tmp=new double[ic];
for (int j=0; j<cc; j++) {
b.copyColumnTo(j, tmp, 0);
for (int i=0; i<rc; i++) {
// double acc=0.0;
// for (int k=0; k<ic; k++) {
// acc+=a.unsafeGet(i, k)*tmp[k];
// }
double acc=DoubleArrays.dotProduct(a.data, i*ic, tmp, 0, ic);
result.unsafeSet(i,j,acc);
}
}
return result;
}
示例2: blockedMultiply
import mikera.matrixx.AMatrix; //导入方法依赖的package包/类
/**
* Performs fast matrix multiplication using temporary working storage for the second matrix
* @param a
* @param b
* @return
*/
public static Matrix blockedMultiply(Matrix a, AMatrix b) {
int rc=a.rowCount();
int cc=b.columnCount();
int ic=a.columnCount();
if ((ic!=b.rowCount())) {
throw new IllegalArgumentException(ErrorMessages.incompatibleShapes(a,b));
}
Matrix result=Matrix.create(rc, cc);
if (ic==0) return result;
int block=(WORKING_SET_TARGET/ic)+1;
// working set stores up to <block> number of columns from second matrix
Matrix wsb=Matrix.create(Math.min(block,cc), ic);
for (int bj=0; bj<cc; bj+=block) {
int bjsize=Math.min(block, cc-bj);
// copy columns into working set
for (int t=0; t<bjsize; t++) {
b.copyColumnTo(bj+t,wsb.data,t*ic);
}
for (int bi=0; bi<rc; bi+=block) {
int bisize=Math.min(block, rc-bi);
// compute inner block
for (int i=bi; i<(bi+bisize); i++) {
int aDataOffset=i*ic;
for (int j=bj; j<(bj+bjsize); j++) {
double val=DoubleArrays.dotProduct(a.data, aDataOffset, wsb.data, ic*(j-bj), ic);
result.unsafeSet(i, j, val);
}
}
}
}
return result;
}
示例3: set
import mikera.matrixx.AMatrix; //导入方法依赖的package包/类
@Override
public void set(AMatrix m) {
checkSameShape(m);
for (int i=0; i<cols; i++) {
m.copyColumnTo(i, data, index(0,i));
}
}
示例4: doubleBlockedMultiply
import mikera.matrixx.AMatrix; //导入方法依赖的package包/类
/**
* Performs fast matrix multiplication using temporary working storage for both matrices
* @param a
* @param b
* @return
*/
public static Matrix doubleBlockedMultiply(AMatrix a, AMatrix b) {
int rc=a.rowCount();
int cc=b.columnCount();
int ic=a.columnCount();
if ((ic!=b.rowCount())) {
throw new IllegalArgumentException(ErrorMessages.incompatibleShapes(a,b));
}
Matrix result=Matrix.create(rc, cc);
if (ic==0) return result;
int block=(WORKING_SET_TARGET/ic)+1;
// working sets stores up to <block> number of columns from each matrix
Matrix wsa=Matrix.create(Math.min(block,rc), ic);
Matrix wsb=Matrix.create(Math.min(block,cc), ic);
for (int bj=0; bj<cc; bj+=block) {
int bjsize=Math.min(block, cc-bj);
// copy columns into working set
for (int t=0; t<bjsize; t++) {
b.copyColumnTo(bj+t,wsb.data,t*ic);
}
for (int bi=0; bi<rc; bi+=block) {
int bisize=Math.min(block, rc-bi);
// copy columns into working set
for (int t=0; t<bisize; t++) {
b.copyRowTo(bi+t,wsa.data,t*ic);
}
// compute inner block
for (int i=bi; i<(bi+bisize); i++) {
for (int j=bj; j<(bj+bjsize); j++) {
double val=DoubleArrays.dotProduct(wsa.data, ic*(i-bi), wsb.data, ic*(j-bj), ic);
result.unsafeSet(i, j, val);
}
}
}
}
return result;
}