InteractionWrappedVec (h2o-core 3.42.0 API)

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.Holder, Vec.Reader, Vec.VectorGroup, Vec.Writer

Nested Classes
Modifier and Type	Class and Description
`static class`	`InteractionWrappedVec.InteractionWrappedChunk`

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
  _cids, _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

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

Constructor Summary

Constructors
Constructor and Description
`InteractionWrappedVec(Key<Vec> 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

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`Chunk`	`chunkForChunkIdx(int cidx)` Map from chunk-index to 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`	`getSigma(int i)`
`double`	`getSub(int i)`
`boolean`	`isNumericInteraction()`
`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, chunkKey, chunkKey, chunkLen, elem2ChunkIdx, equals, espc, factor, get_type_str, get_type, getVecKey, group, hashCode, isBad, isBinary, isBinary, isBinaryOnes, isCategorical, isCompatibleWith, isConst, isConst, isDomainTruncated, isHomedLocally, isInt, isNA, isNumeric, isString, isTime, isUUID, isVolatile, lazy_bins, length, makeCon, makeCon, makeCon, makeCon, makeCon, makeCon, makeCon, makeCon, makeCon, makeCon, makeCon, makeCon, makeCon, makeCon, makeConN, makeCons, makeCons, makeCopy, makeCopy, makeCopy, makeDoubles, makeOne, makeOne, makeOnes, makeOnes, makeRand, makeRepSeq, makeSeq, makeSeq, makeSeq, makeTimeVec, makeVec, makeVec, makeVec, makeVec, makeVec, makeVec, makeVolatileDoubles, makeVolatileInts, makeZero, makeZero, makeZero, makeZero, makeZero, makeZeros, makeZeros, max, maxs, min, mins, naCnt, nChunks, nChunksFor, newKey, ninfs, nonEmptyChunks, nzCnt, open, pctiles, pinfs, postWrite, preWriting, remove_impl, remove_self_key_impl, rollupStatsKey, set, set, set, set, set, setBad, setChunkIdx, setDomain, setNA, sparseRatio, startRollupStats, startRollupStats, stride, stringAt, toCategoricalVec, toNumericVec, toString, toStringVec, toTwoDimTable, toTwoDimTable

Methods inherited from class water.Keyed
checksum_impl, checksum, checksum, getKey, makeSchema, readAll, remove_impl, remove, remove, remove, remove, remove, remove, removeQuietly, writeAll

Methods inherited from class water.Iced
asBytes, clone, copyOver, frozenType, read, readExternal, readJSON, reloadFromBytes, toJsonBytes, 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<Vec> 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)
```
- getSigma
```
public double getSigma(int i)
```
- isNumericInteraction
```
public boolean isNumericInteraction()
```
- 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)
```
  Map from chunk-index to Chunk. These wrappers are making custom Chunks
  
  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()
```

Class InteractionWrappedVec

Nested Class Summary

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

Field Summary

Fields inherited from class water.fvec.Vec

Fields inherited from class water.Keyed

Constructor Summary

Method Summary

Methods inherited from class water.fvec.Vec

Methods inherited from class water.Keyed

Methods inherited from class water.Iced

Methods inherited from class java.lang.Object

Field Detail

_useAllFactorLevels

_skipMissing

_standardize

t

Constructor Detail

InteractionWrappedVec

Method Detail

v1Domain

v2Domain

domain

v1

v2

expandedLength

getMeans

getSub

getMul

getSigma

isNumericInteraction

mean

sigma

mode

getBins

missingDomains

chunkForChunkIdx

doCopy

writeAll_impl

readAll_impl

masterVec