org.datavec.api.transform.reduce

Class AggregableReductionUtils

java.lang.Object

org.datavec.api.transform.reduce.AggregableReductionUtils

public class AggregableReductionUtils
extends Object

Various utilities for performing reductions

Author:

Alex Black

Method Summary

Modifier and Type	Method and Description
static IAggregableReduceOp<Writable,List<Writable>>	reduceBytesColumn(List<ReduceOp> lop, boolean ignoreInvalid, ColumnMetaData metaData)
static IAggregableReduceOp<Writable,List<Writable>>	reduceColumn(List<ReduceOp> op, ColumnType type, boolean ignoreInvalid, ColumnMetaData metaData)
static IAggregableReduceOp<Writable,List<Writable>>	reduceDoubleColumn(List<ReduceOp> lop, boolean ignoreInvalid, ColumnMetaData metaData)
static IAggregableReduceOp<Writable,List<Writable>>	reduceFloatColumn(List<ReduceOp> lop, boolean ignoreInvalid, ColumnMetaData metaData)
static IAggregableReduceOp<Writable,List<Writable>>	reduceIntColumn(List<ReduceOp> lop, boolean ignoreInvalid, ColumnMetaData metaData)
static IAggregableReduceOp<Writable,List<Writable>>	reduceLongColumn(List<ReduceOp> lop, boolean ignoreInvalid, ColumnMetaData metaData)
static IAggregableReduceOp<Writable,List<Writable>>	reduceStringOrCategoricalColumn(List<ReduceOp> lop, boolean ignoreInvalid, ColumnMetaData metaData)
static IAggregableReduceOp<Writable,List<Writable>>	reduceTimeColumn(List<ReduceOp> lop, boolean ignoreInvalid, ColumnMetaData metaData)

Methods inherited from class java.lang.Object

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

Method Detail

reduceColumn

public static IAggregableReduceOp<Writable,List<Writable>> reduceColumn(List<ReduceOp> op,
                                                                        ColumnType type,
                                                                        boolean ignoreInvalid,
                                                                        ColumnMetaData metaData)

reduceIntColumn

public static IAggregableReduceOp<Writable,List<Writable>> reduceIntColumn(List<ReduceOp> lop,
                                                                           boolean ignoreInvalid,
                                                                           ColumnMetaData metaData)

reduceLongColumn

public static IAggregableReduceOp<Writable,List<Writable>> reduceLongColumn(List<ReduceOp> lop,
                                                                            boolean ignoreInvalid,
                                                                            ColumnMetaData metaData)

reduceFloatColumn

public static IAggregableReduceOp<Writable,List<Writable>> reduceFloatColumn(List<ReduceOp> lop,
                                                                             boolean ignoreInvalid,
                                                                             ColumnMetaData metaData)

reduceDoubleColumn

public static IAggregableReduceOp<Writable,List<Writable>> reduceDoubleColumn(List<ReduceOp> lop,
                                                                              boolean ignoreInvalid,
                                                                              ColumnMetaData metaData)

reduceStringOrCategoricalColumn

public static IAggregableReduceOp<Writable,List<Writable>> reduceStringOrCategoricalColumn(List<ReduceOp> lop,
                                                                                           boolean ignoreInvalid,
                                                                                           ColumnMetaData metaData)

reduceTimeColumn

public static IAggregableReduceOp<Writable,List<Writable>> reduceTimeColumn(List<ReduceOp> lop,
                                                                            boolean ignoreInvalid,
                                                                            ColumnMetaData metaData)

reduceBytesColumn

public static IAggregableReduceOp<Writable,List<Writable>> reduceBytesColumn(List<ReduceOp> lop,
                                                                             boolean ignoreInvalid,
                                                                             ColumnMetaData metaData)