| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.sysds.runtime.compress.estim; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.sysds.runtime.compress.CompressedMatrixBlock; |
| import org.apache.sysds.runtime.compress.CompressionSettings; |
| import org.apache.sysds.runtime.compress.colgroup.AColGroup; |
| import org.apache.sysds.runtime.compress.colgroup.indexes.IColIndex; |
| import org.apache.sysds.runtime.compress.estim.encoding.IEncode; |
| import org.apache.sysds.runtime.compress.lib.CLALibCombineGroups; |
| |
| public class ComEstCompressed extends AComEst { |
| |
| final CompressedMatrixBlock cData; |
| |
| protected ComEstCompressed(CompressedMatrixBlock data, CompressionSettings compSettings) { |
| super(data, compSettings); |
| cData = data; |
| } |
| |
| @Override |
| protected List<CompressedSizeInfoColGroup> CompressedSizeInfoColGroup(int clen, int k) { |
| List<CompressedSizeInfoColGroup> ret = new ArrayList<CompressedSizeInfoColGroup>(); |
| final int nRow = cData.getNumRows(); |
| for(AColGroup g : cData.getColGroups()) { |
| ret.add(g.getCompressionInfo(nRow)); |
| } |
| return ret; |
| } |
| |
| @Override |
| public CompressedSizeInfoColGroup getColGroupInfo(IColIndex colIndexes, int estimate, int nrUniqueUpperBound) { |
| |
| // final IEncode map = |
| throw new UnsupportedOperationException("Unimplemented method 'getColGroupInfo'"); |
| } |
| |
| @Override |
| public CompressedSizeInfoColGroup getDeltaColGroupInfo(IColIndex colIndexes, int estimate, int nrUniqueUpperBound) { |
| throw new UnsupportedOperationException("Unimplemented method 'getDeltaColGroupInfo'"); |
| } |
| |
| @Override |
| protected int worstCaseUpperBound(IColIndex columns) { |
| if(columns.size() == 1) { |
| int id = columns.get(0); |
| AColGroup g = cData.getColGroupForColumn(id); |
| return g.getNumValues(); |
| } |
| else { |
| List<AColGroup> groups = CLALibCombineGroups.findGroupsInIndex(columns, cData.getColGroups()); |
| int nVals = 1; |
| for(AColGroup g : groups) |
| nVals *= g.getNumValues(); |
| |
| return Math.min(_data.getNumRows(), nVals); |
| } |
| } |
| |
| @Override |
| protected CompressedSizeInfoColGroup combine(IColIndex combinedColumns, CompressedSizeInfoColGroup g1, |
| CompressedSizeInfoColGroup g2, int maxDistinct) { |
| final IEncode map = g1.getMap().combine(g2.getMap()); |
| return getFacts(map, combinedColumns); |
| } |
| |
| protected CompressedSizeInfoColGroup getFacts(IEncode map, IColIndex colIndexes) { |
| final int _numRows = getNumRows(); |
| final EstimationFactors em = map.extractFacts(_numRows, _data.getSparsity(), _data.getSparsity(), _cs); |
| return new CompressedSizeInfoColGroup(colIndexes, em, _cs.validCompressions, map); |
| } |
| } |