water.fvec

Class InteractionWrappedVec

java.lang.Object

water.Iced<T>

water.Keyed<Vec>

water.fvec.Vec

water.fvec.InteractionWrappedVec

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, java.lang.Cloneable, Freezable<Vec>

public class InteractionWrappedVec
extends Vec

This class represents an interaction between two Vec instances. Another virtual Vec (akin to TransformWrappedVec) used to represent a never-materialized interaction between two columns. There are 3 types of interactions to consider: Num-Num, Num-Enum, and Enum-Enums Creation of these Vec instances is cheap except for the Enum-Enum case (since it is not known apriori the co-occurrence of enums between any two categorical columns). So in this specific case, an MRTask is done to collect the domain.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	InteractionWrappedVec.InteractionWrappedChunk

Nested classes/interfaces inherited from class water.fvec.Vec

Vec.ESPC, Vec.Reader, Vec.VectorGroup, Vec.Writer

Field Summary

Fields

Modifier and Type	Field and Description
boolean	_skipMissing
boolean	_standardize
boolean	_useAllFactorLevels
water.fvec.InteractionWrappedVec.GetMeanTask	t

Fields inherited from class water.fvec.Vec

_rowLayout, DO_HISTOGRAMS, KEY_PREFIX_LEN, PERCENTILES, T_BAD, T_CAT, T_NUM, T_STR, T_TIME, T_UUID, TYPE_STR

Fields inherited from class water.Keyed

_key

Constructor Summary

Constructors

Constructor and Description
InteractionWrappedVec(Key key, int rowLayout, java.lang.String[] vec1DomainLimit, java.lang.String[] vec2DomainLimit, boolean useAllFactorLevels, boolean skipMissing, boolean standardize, Key<Vec> masterVecKey1, Key<Vec> masterVecKey2)

Method Summary

Methods

Modifier and Type	Method and Description
Chunk	chunkForChunkIdx(int cidx) The Chunk for a chunk#.
Vec	doCopy()
java.lang.String[]	domain() Returns the categorical toString mapping array, or null if not an categorical column.
int	expandedLength() Obtain the length of the expanded (i.e.
long[]	getBins()
double[]	getMeans()
double	getMul(int i)
double	getSub(int i)
Vec	masterVec()
double	mean() Vecs's mean
java.lang.String[]	missingDomains()
int	mode() Vecs's mode
protected Keyed	readAll_impl(AutoBuffer ab, Futures fs)
double	sigma() Vecs's standard deviation
Vec	v1()
java.lang.String[]	v1Domain()
Vec	v2()
java.lang.String[]	v2Domain()
protected AutoBuffer	writeAll_impl(AutoBuffer ab) Write out K/V pairs

Methods inherited from class water.fvec.Vec

adaptTo, align, at, at16h, at16l, at8, atStr, base, bins, byteSize, cardinality, checksum_impl, chunkForRow, chunkIdx, chunkKey, chunkKey, copyMeta, elem2ChunkIdx, equals, espc, factor, get_type_str, get_type, getVecKey, group, hashCode, isBad, isBinary, isCategorical, isConst, isInt, isNA, isNumeric, isString, isTime, isUUID, lazy_bins, length, makeCon, makeCon, makeCon, makeCon, makeCon, makeCon, makeCon, makeCon, makeCons, makeCons, makeCopy, makeCopy, makeCopy, makeDoubles, makeRand, makeRepSeq, makeSeq, makeSeq, makeSeq, makeVec, makeVec, makeVec, makeZero, makeZero, makeZero, makeZero, makeZeros, makeZeros, max, maxs, min, mins, naCnt, nChunks, newKey, ninfs, nzCnt, open, pctiles, pinfs, postWrite, preWriting, remove_impl, rollupStatsKey, set, set, set, set, setBad, setDomain, sparseRatio, startRollupStats, startRollupStats, stride, toCategoricalVec, toNumericVec, toString, toStringVec

Methods inherited from class water.Keyed

checksum, makeSchema, readAll, remove, remove, remove, remove, writeAll

Methods inherited from class water.Iced

asBytes, clone, copyOver, frozenType, read, readExternal, readJSON, reloadFromBytes, toJsonString, write, writeExternal, writeJSON

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

_useAllFactorLevels

public boolean _useAllFactorLevels

_skipMissing

public boolean _skipMissing

_standardize

public boolean _standardize

t

public transient water.fvec.InteractionWrappedVec.GetMeanTask t

Constructor Detail

InteractionWrappedVec

public InteractionWrappedVec(Key key,
                     int rowLayout,
                     java.lang.String[] vec1DomainLimit,
                     java.lang.String[] vec2DomainLimit,
                     boolean useAllFactorLevels,
                     boolean skipMissing,
                     boolean standardize,
                     Key<Vec> masterVecKey1,
                     Key<Vec> masterVecKey2)

Method Detail

v1Domain

public java.lang.String[] v1Domain()

v2Domain

public java.lang.String[] v2Domain()

domain

public java.lang.String[] domain()

Description copied from class: Vec

Returns the categorical toString mapping array, or null if not an categorical column. Not a defensive clone (to expensive to clone; coding error to change the contents).

Overrides:

domain in class Vec

Returns:

the categorical / factor / categorical mapping array, or null if not a categorical column

v1

public Vec v1()

v2

public Vec v2()

expandedLength

public int expandedLength()

Obtain the length of the expanded (i.e. one-hot expanded) interaction column.

getMeans

public double[] getMeans()

getSub

public double getSub(int i)

getMul

public double getMul(int i)

mean

public double mean()

Description copied from class: Vec

Vecs's mean

Overrides:

mean in class Vec

Returns:

Vec's mean

sigma

public double sigma()

Description copied from class: Vec

Vecs's standard deviation

Overrides:

sigma in class Vec

Returns:

Vec's standard deviation

mode

public int mode()

Description copied from class: Vec

Vecs's mode

Overrides:

mode in class Vec

Returns:

Vec's mode

getBins

public long[] getBins()

missingDomains

public java.lang.String[] missingDomains()

chunkForChunkIdx

public Chunk chunkForChunkIdx(int cidx)

Description copied from class: Vec

The Chunk for a chunk#. Warning: this pulls the data locally; using this call on every Chunk index on the same node will probably trigger an OOM!

Returns:

Chunk for a chunk#

doCopy

public Vec doCopy()

Overrides:

doCopy in class Vec

writeAll_impl

protected AutoBuffer writeAll_impl(AutoBuffer ab)

Description copied from class: Vec

Write out K/V pairs

Overrides:

writeAll_impl in class Vec

readAll_impl

protected Keyed readAll_impl(AutoBuffer ab,
                 Futures fs)

Overrides:

readAll_impl in class Vec

masterVec

public Vec masterVec()