public class CompressedSizeEstimatorSample extends CompressedSizeEstimator
Constructor and Description |
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CompressedSizeEstimatorSample(MatrixBlock data,
CompressionSettings compSettings,
int sampleSize)
CompressedSizeEstimatorSample, samples from the input data and estimates the size of the compressed matrix.
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Modifier and Type | Method and Description |
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CompressedSizeInfoColGroup |
estimateCompressedColGroupSize(int[] colIndexes)
Abstract method for extracting Compressed Size Info of specified columns, together in a single ColGroup
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computeCompressedSizeInfos, estimateCompressedColGroupSize, estimateCompressedColGroupSize
public CompressedSizeEstimatorSample(MatrixBlock data, CompressionSettings compSettings, int sampleSize)
data
- The input data sampled fromcompSettings
- The Settings used for the sampling, and compression, contains information such as seed.sampleSize
- Size of the sampling usedpublic CompressedSizeInfoColGroup estimateCompressedColGroupSize(int[] colIndexes)
CompressedSizeEstimator
estimateCompressedColGroupSize
in class CompressedSizeEstimator
colIndexes
- The Colums to group together inside a ColGroupCopyright © 2020 The Apache Software Foundation. All rights reserved.