/**
* This implements matrix this.transpose().times(other)
*
* @param other a DistributedRowMatrix
* @param outPath path to write result to
* @return a DistributedRowMatrix containing the product
*/
public DistributedRowMatrix times(DistributedRowMatrix other, Path outPath) throws IOException {
if (numRows != other.numRows()) {
throw new CardinalityException(numRows, other.numRows());
}
Configuration initialConf = getConf() == null ? new Configuration() : getConf();
Configuration conf =
MatrixMultiplicationJob.createMatrixMultiplyJobConf(
initialConf, rowPath, other.rowPath, outPath, other.numCols);
JobClient.runJob(new JobConf(conf));
DistributedRowMatrix out =
new DistributedRowMatrix(outPath, outputTmpPath, numCols, other.numCols());
out.setConf(conf);
return out;
}
/**
* This implements matrix this.transpose().times(other)
*
* @param other a DistributedRowMatrix
* @return a DistributedRowMatrix containing the product
*/
public DistributedRowMatrix times(DistributedRowMatrix other) throws IOException {
if (numRows != other.numRows()) {
throw new CardinalityException(numRows, other.numRows());
}
Path outPath =
new Path(outputTmpBasePath.getParent(), "productWith-" + (System.nanoTime() & 0xFF));
Configuration initialConf = getConf() == null ? new Configuration() : getConf();
Configuration conf =
MatrixMultiplicationJob.createMatrixMultiplyJobConf(
initialConf, rowPath, other.rowPath, outPath, other.numCols);
JobClient.runJob(new JobConf(conf));
DistributedRowMatrix out =
new DistributedRowMatrix(outPath, outputTmpPath, numCols, other.numCols());
out.setConf(conf);
return out;
}
