Class/Object

com.johnsnowlabs.nlp.annotators.classifier.dl

MultiClassifierDLModel

Related Docs: object MultiClassifierDLModel | package dl

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class MultiClassifierDLModel extends AnnotatorModel[MultiClassifierDLModel] with HasSimpleAnnotate[MultiClassifierDLModel] with WriteTensorflowModel with HasStorageRef with ParamsAndFeaturesWritable

MultiClassifierDL for Multi-label Text Classification.

MultiClassifierDL Bidirectional GRU with Convolution model we have built inside TensorFlow and supports up to 100 classes. The input to MultiClassifierDL is Sentence Embeddings such as state-of-the-art UniversalSentenceEncoder, BertSentenceEmbeddings, or SentenceEmbeddings.

This is the instantiated model of the MultiClassifierDLApproach. For training your own model, please see the documentation of that class.

Pretrained models can be loaded with pretrained of the companion object:

val multiClassifier = MultiClassifierDLModel.pretrained()
  .setInputCols("sentence_embeddings")
  .setOutputCol("categories")

The default model is "multiclassifierdl_use_toxic", if no name is provided. It uses embeddings from the UniversalSentenceEncoder and classifies toxic comments. The data is based on the Jigsaw Toxic Comment Classification Challenge. For available pretrained models please see the Models Hub.

In machine learning, multi-label classification and the strongly related problem of multi-output classification are variants of the classification problem where multiple labels may be assigned to each instance. Multi-label classification is a generalization of multiclass classification, which is the single-label problem of categorizing instances into precisely one of more than two classes; in the multi-label problem there is no constraint on how many of the classes the instance can be assigned to. Formally, multi-label classification is the problem of finding a model that maps inputs x to binary vectors y (assigning a value of 0 or 1 for each element (label) in y).

For extended examples of usage, see the Spark NLP Workshop and the MultiClassifierDLTestSpec.

Example

import spark.implicits._
import com.johnsnowlabs.nlp.base.DocumentAssembler
import com.johnsnowlabs.nlp.annotators.classifier.dl.MultiClassifierDLModel
import com.johnsnowlabs.nlp.embeddings.UniversalSentenceEncoder
import org.apache.spark.ml.Pipeline

val documentAssembler = new DocumentAssembler()
  .setInputCol("text")
  .setOutputCol("document")

val useEmbeddings = UniversalSentenceEncoder.pretrained()
  .setInputCols("document")
  .setOutputCol("sentence_embeddings")

val multiClassifierDl = MultiClassifierDLModel.pretrained()
  .setInputCols("sentence_embeddings")
  .setOutputCol("classifications")

val pipeline = new Pipeline()
  .setStages(Array(
    documentAssembler,
    useEmbeddings,
    multiClassifierDl
  ))

val data = Seq(
  "This is pretty good stuff!",
  "Wtf kind of crap is this"
).toDF("text")
val result = pipeline.fit(data).transform(data)

result.select("text", "classifications.result").show(false)
+--------------------------+----------------+
|text                      |result          |
+--------------------------+----------------+
|This is pretty good stuff!|[]              |
|Wtf kind of crap is this  |[toxic, obscene]|
+--------------------------+----------------+
See also

SentimentDLModel for sentiment analysis

ClassifierDLModel for single-class classification

Multi-label classification on Wikipedia

Linear Supertypes
Ordering
  1. Grouped
  2. Alphabetic
  3. By Inheritance
Inherited
  1. MultiClassifierDLModel
  2. HasStorageRef
  3. WriteTensorflowModel
  4. HasSimpleAnnotate
  5. AnnotatorModel
  6. CanBeLazy
  7. RawAnnotator
  8. HasOutputAnnotationCol
  9. HasInputAnnotationCols
  10. HasOutputAnnotatorType
  11. ParamsAndFeaturesWritable
  12. HasFeatures
  13. DefaultParamsWritable
  14. MLWritable
  15. Model
  16. Transformer
  17. PipelineStage
  18. Logging
  19. Params
  20. Serializable
  21. Serializable
  22. Identifiable
  23. AnyRef
  24. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new MultiClassifierDLModel()

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  2. new MultiClassifierDLModel(uid: String)

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Type Members

  1. type AnnotationContent = Seq[Row]

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    internal types to show Rows as a relevant StructType Should be deleted once Spark releases UserDefinedTypes to @developerAPI

    internal types to show Rows as a relevant StructType Should be deleted once Spark releases UserDefinedTypes to @developerAPI

    Attributes
    protected
    Definition Classes
    AnnotatorModel
  2. type AnnotatorType = String

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    Definition Classes
    HasOutputAnnotatorType

Value Members

  1. final def !=(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any
  2. final def ##(): Int

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    Definition Classes
    AnyRef → Any
  3. final def $[T](param: Param[T]): T

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    Attributes
    protected
    Definition Classes
    Params
  4. def $$[T](feature: StructFeature[T]): T

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    Attributes
    protected
    Definition Classes
    HasFeatures
  5. def $$[K, V](feature: MapFeature[K, V]): Map[K, V]

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    Attributes
    protected
    Definition Classes
    HasFeatures
  6. def $$[T](feature: SetFeature[T]): Set[T]

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    Attributes
    protected
    Definition Classes
    HasFeatures
  7. def $$[T](feature: ArrayFeature[T]): Array[T]

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    Attributes
    protected
    Definition Classes
    HasFeatures
  8. final def ==(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any
  9. def _transform(dataset: Dataset[_], recursivePipeline: Option[PipelineModel]): DataFrame

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    Attributes
    protected
    Definition Classes
    AnnotatorModel
  10. def afterAnnotate(dataset: DataFrame): DataFrame

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    Attributes
    protected
    Definition Classes
    AnnotatorModel
  11. def annotate(annotations: Seq[Annotation]): Seq[Annotation]

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    takes a document and annotations and produces new annotations of this annotator's annotation type

    takes a document and annotations and produces new annotations of this annotator's annotation type

    annotations

    Annotations that correspond to inputAnnotationCols generated by previous annotators if any

    returns

    any number of annotations processed for every input annotation. Not necessary one to one relationship

    Definition Classes
    MultiClassifierDLModelHasSimpleAnnotate
  12. final def asInstanceOf[T0]: T0

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    Definition Classes
    Any
  13. def beforeAnnotate(dataset: Dataset[_]): Dataset[_]

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    Attributes
    protected
    Definition Classes
    MultiClassifierDLModelAnnotatorModel
  14. final def checkSchema(schema: StructType, inputAnnotatorType: String): Boolean

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    Attributes
    protected
    Definition Classes
    HasInputAnnotationCols
  15. val classes: StringArrayParam

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  16. final def clear(param: Param[_]): MultiClassifierDLModel.this.type

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    Definition Classes
    Params
  17. def clone(): AnyRef

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  18. val configProtoBytes: IntArrayParam

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    ConfigProto from tensorflow, serialized into byte array.

    ConfigProto from tensorflow, serialized into byte array. Get with config_proto.SerializeToString()

  19. def copy(extra: ParamMap): MultiClassifierDLModel

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    requirement for annotators copies

    requirement for annotators copies

    Definition Classes
    RawAnnotator → Model → Transformer → PipelineStage → Params
  20. def copyValues[T <: Params](to: T, extra: ParamMap): T

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    Attributes
    protected
    Definition Classes
    Params
  21. def createDatabaseConnection(database: Name): RocksDBConnection

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    Definition Classes
    HasStorageRef
  22. val datasetParams: StructFeature[ClassifierDatasetEncoderParams]

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    Dataset params

  23. final def defaultCopy[T <: Params](extra: ParamMap): T

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    Attributes
    protected
    Definition Classes
    Params
  24. def dfAnnotate: UserDefinedFunction

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    Wraps annotate to happen inside SparkSQL user defined functions in order to act with org.apache.spark.sql.Column

    Wraps annotate to happen inside SparkSQL user defined functions in order to act with org.apache.spark.sql.Column

    returns

    udf function to be applied to inputCols using this annotator's annotate function as part of ML transformation

    Definition Classes
    HasSimpleAnnotate
  25. final def eq(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef
  26. def equals(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any
  27. def explainParam(param: Param[_]): String

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    Definition Classes
    Params
  28. def explainParams(): String

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    Definition Classes
    Params
  29. def extraValidate(structType: StructType): Boolean

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    Attributes
    protected
    Definition Classes
    RawAnnotator
  30. def extraValidateMsg: String

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    Override for additional custom schema checks

    Override for additional custom schema checks

    Attributes
    protected
    Definition Classes
    RawAnnotator
  31. final def extractParamMap(): ParamMap

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    Definition Classes
    Params
  32. final def extractParamMap(extra: ParamMap): ParamMap

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    Definition Classes
    Params
  33. val features: ArrayBuffer[Feature[_, _, _]]

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    Definition Classes
    HasFeatures
  34. def finalize(): Unit

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  35. def get[T](feature: StructFeature[T]): Option[T]

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    Attributes
    protected
    Definition Classes
    HasFeatures
  36. def get[K, V](feature: MapFeature[K, V]): Option[Map[K, V]]

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    Attributes
    protected
    Definition Classes
    HasFeatures
  37. def get[T](feature: SetFeature[T]): Option[Set[T]]

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    Attributes
    protected
    Definition Classes
    HasFeatures
  38. def get[T](feature: ArrayFeature[T]): Option[Array[T]]

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    Attributes
    protected
    Definition Classes
    HasFeatures
  39. final def get[T](param: Param[T]): Option[T]

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    Definition Classes
    Params
  40. final def getClass(): Class[_]

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    Definition Classes
    AnyRef → Any
  41. def getClasses: Array[String]

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  42. def getConfigProtoBytes: Option[Array[Byte]]

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    Tensorflow config Protobytes passed to the TF session

  43. final def getDefault[T](param: Param[T]): Option[T]

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    Definition Classes
    Params
  44. def getInputCols: Array[String]

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    returns

    input annotations columns currently used

    Definition Classes
    HasInputAnnotationCols
  45. def getLazyAnnotator: Boolean

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    Definition Classes
    CanBeLazy
  46. def getModelIfNotSet: TensorflowMultiClassifier

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  47. final def getOrDefault[T](param: Param[T]): T

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    Definition Classes
    Params
  48. final def getOutputCol: String

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    Gets annotation column name going to generate

    Gets annotation column name going to generate

    Definition Classes
    HasOutputAnnotationCol
  49. def getParam(paramName: String): Param[Any]

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    Definition Classes
    Params
  50. def getStorageRef: String

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    Definition Classes
    HasStorageRef
  51. def getThreshold: Float

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    The minimum threshold for each label to be accepted (Default: 0.5f)

  52. final def hasDefault[T](param: Param[T]): Boolean

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    Definition Classes
    Params
  53. def hasParam(paramName: String): Boolean

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    Definition Classes
    Params
  54. def hasParent: Boolean

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    Definition Classes
    Model
  55. def hashCode(): Int

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    Definition Classes
    AnyRef → Any
  56. def initializeLogIfNecessary(isInterpreter: Boolean, silent: Boolean): Boolean

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    Attributes
    protected
    Definition Classes
    Logging
  57. def initializeLogIfNecessary(isInterpreter: Boolean): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  58. val inputAnnotatorTypes: Array[AnnotatorType]

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    Output annotator type : SENTENCE_EMBEDDINGS

    Output annotator type : SENTENCE_EMBEDDINGS

    Definition Classes
    MultiClassifierDLModelHasInputAnnotationCols
  59. final val inputCols: StringArrayParam

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    columns that contain annotations necessary to run this annotator AnnotatorType is used both as input and output columns if not specified

    columns that contain annotations necessary to run this annotator AnnotatorType is used both as input and output columns if not specified

    Attributes
    protected
    Definition Classes
    HasInputAnnotationCols
  60. final def isDefined(param: Param[_]): Boolean

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    Definition Classes
    Params
  61. final def isInstanceOf[T0]: Boolean

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    Definition Classes
    Any
  62. final def isSet(param: Param[_]): Boolean

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    Definition Classes
    Params
  63. def isTraceEnabled(): Boolean

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    Attributes
    protected
    Definition Classes
    Logging
  64. val lazyAnnotator: BooleanParam

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    Definition Classes
    CanBeLazy
  65. def log: Logger

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    Attributes
    protected
    Definition Classes
    Logging
  66. def logDebug(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  67. def logDebug(msg: ⇒ String): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  68. def logError(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  69. def logError(msg: ⇒ String): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  70. def logInfo(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  71. def logInfo(msg: ⇒ String): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  72. def logName: String

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    Attributes
    protected
    Definition Classes
    Logging
  73. def logTrace(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  74. def logTrace(msg: ⇒ String): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  75. def logWarning(msg: ⇒ String, throwable: Throwable): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  76. def logWarning(msg: ⇒ String): Unit

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    Attributes
    protected
    Definition Classes
    Logging
  77. def msgHelper(schema: StructType): String

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    Attributes
    protected
    Definition Classes
    HasInputAnnotationCols
  78. final def ne(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef
  79. final def notify(): Unit

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    Definition Classes
    AnyRef
  80. final def notifyAll(): Unit

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    Definition Classes
    AnyRef
  81. def onWrite(path: String, spark: SparkSession): Unit

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  82. val optionalInputAnnotatorTypes: Array[String]

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    Definition Classes
    HasInputAnnotationCols
  83. val outputAnnotatorType: String

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    Output annotator type : CATEGORY

    Output annotator type : CATEGORY

    Definition Classes
    MultiClassifierDLModelHasOutputAnnotatorType
  84. final val outputCol: Param[String]

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    Attributes
    protected
    Definition Classes
    HasOutputAnnotationCol
  85. lazy val params: Array[Param[_]]

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    Definition Classes
    Params
  86. var parent: Estimator[MultiClassifierDLModel]

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    Definition Classes
    Model
  87. def save(path: String): Unit

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    Definition Classes
    MLWritable
    Annotations
    @Since( "1.6.0" ) @throws( ... )
  88. def set[T](feature: StructFeature[T], value: T): MultiClassifierDLModel.this.type

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    Attributes
    protected
    Definition Classes
    HasFeatures
  89. def set[K, V](feature: MapFeature[K, V], value: Map[K, V]): MultiClassifierDLModel.this.type

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    Attributes
    protected
    Definition Classes
    HasFeatures
  90. def set[T](feature: SetFeature[T], value: Set[T]): MultiClassifierDLModel.this.type

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    Attributes
    protected
    Definition Classes
    HasFeatures
  91. def set[T](feature: ArrayFeature[T], value: Array[T]): MultiClassifierDLModel.this.type

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    Attributes
    protected
    Definition Classes
    HasFeatures
  92. final def set(paramPair: ParamPair[_]): MultiClassifierDLModel.this.type

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    Attributes
    protected
    Definition Classes
    Params
  93. final def set(param: String, value: Any): MultiClassifierDLModel.this.type

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    Attributes
    protected
    Definition Classes
    Params
  94. final def set[T](param: Param[T], value: T): MultiClassifierDLModel.this.type

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    Definition Classes
    Params
  95. def setConfigProtoBytes(bytes: Array[Int]): MultiClassifierDLModel.this.type

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    Tensorflow config Protobytes passed to the TF session

  96. def setDatasetParams(params: ClassifierDatasetEncoderParams): MultiClassifierDLModel.this.type

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    Dataset params

  97. def setDefault[T](feature: StructFeature[T], value: () ⇒ T): MultiClassifierDLModel.this.type

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    Attributes
    protected
    Definition Classes
    HasFeatures
  98. def setDefault[K, V](feature: MapFeature[K, V], value: () ⇒ Map[K, V]): MultiClassifierDLModel.this.type

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    Attributes
    protected
    Definition Classes
    HasFeatures
  99. def setDefault[T](feature: SetFeature[T], value: () ⇒ Set[T]): MultiClassifierDLModel.this.type

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    Attributes
    protected
    Definition Classes
    HasFeatures
  100. def setDefault[T](feature: ArrayFeature[T], value: () ⇒ Array[T]): MultiClassifierDLModel.this.type

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    Attributes
    protected
    Definition Classes
    HasFeatures
  101. final def setDefault(paramPairs: ParamPair[_]*): MultiClassifierDLModel.this.type

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    Attributes
    protected
    Definition Classes
    Params
  102. final def setDefault[T](param: Param[T], value: T): MultiClassifierDLModel.this.type

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    Attributes
    protected
    Definition Classes
    Params
  103. final def setInputCols(value: String*): MultiClassifierDLModel.this.type

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    Definition Classes
    HasInputAnnotationCols
  104. def setInputCols(value: Array[String]): MultiClassifierDLModel.this.type

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    Overrides required annotators column if different than default

    Overrides required annotators column if different than default

    Definition Classes
    HasInputAnnotationCols
  105. def setLazyAnnotator(value: Boolean): MultiClassifierDLModel.this.type

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    Definition Classes
    CanBeLazy
  106. def setModelIfNotSet(spark: SparkSession, tf: TensorflowWrapper): MultiClassifierDLModel.this.type

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  107. final def setOutputCol(value: String): MultiClassifierDLModel.this.type

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    Overrides annotation column name when transforming

    Overrides annotation column name when transforming

    Definition Classes
    HasOutputAnnotationCol
  108. def setParent(parent: Estimator[MultiClassifierDLModel]): MultiClassifierDLModel

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    Definition Classes
    Model
  109. def setStorageRef(value: String): MultiClassifierDLModel.this.type

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    Definition Classes
    HasStorageRef
  110. def setThreshold(threshold: Float): MultiClassifierDLModel.this.type

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    The minimum threshold for each label to be accepted (Default: 0.5f)

  111. val storageRef: Param[String]

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    Unique identifier for storage (Default: this.uid)

    Unique identifier for storage (Default: this.uid)

    Definition Classes
    HasStorageRef
  112. final def synchronized[T0](arg0: ⇒ T0): T0

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    Definition Classes
    AnyRef
  113. val threshold: FloatParam

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    The minimum threshold for each label to be accepted (Default: 0.5f)

  114. def toString(): String

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    Definition Classes
    Identifiable → AnyRef → Any
  115. final def transform(dataset: Dataset[_]): DataFrame

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    Given requirements are met, this applies ML transformation within a Pipeline or stand-alone Output annotation will be generated as a new column, previous annotations are still available separately metadata is built at schema level to record annotations structural information outside its content

    Given requirements are met, this applies ML transformation within a Pipeline or stand-alone Output annotation will be generated as a new column, previous annotations are still available separately metadata is built at schema level to record annotations structural information outside its content

    dataset

    Dataset[Row]

    Definition Classes
    AnnotatorModel → Transformer
  116. def transform(dataset: Dataset[_], paramMap: ParamMap): DataFrame

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    Definition Classes
    Transformer
    Annotations
    @Since( "2.0.0" )
  117. def transform(dataset: Dataset[_], firstParamPair: ParamPair[_], otherParamPairs: ParamPair[_]*): DataFrame

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    Definition Classes
    Transformer
    Annotations
    @Since( "2.0.0" ) @varargs()
  118. final def transformSchema(schema: StructType): StructType

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    requirement for pipeline transformation validation.

    requirement for pipeline transformation validation. It is called on fit()

    Definition Classes
    RawAnnotator → PipelineStage
  119. def transformSchema(schema: StructType, logging: Boolean): StructType

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    Attributes
    protected
    Definition Classes
    PipelineStage
    Annotations
    @DeveloperApi()
  120. val uid: String

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    Definition Classes
    MultiClassifierDLModel → Identifiable
  121. def validate(schema: StructType): Boolean

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    takes a Dataset and checks to see if all the required annotation types are present.

    takes a Dataset and checks to see if all the required annotation types are present.

    schema

    to be validated

    returns

    True if all the required types are present, else false

    Attributes
    protected
    Definition Classes
    RawAnnotator
  122. def validateStorageRef(dataset: Dataset[_], inputCols: Array[String], annotatorType: String): Unit

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    Definition Classes
    HasStorageRef
  123. final def wait(): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  124. final def wait(arg0: Long, arg1: Int): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  125. final def wait(arg0: Long): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  126. def wrapColumnMetadata(col: Column): Column

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    Attributes
    protected
    Definition Classes
    RawAnnotator
  127. def write: MLWriter

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    Definition Classes
    ParamsAndFeaturesWritable → DefaultParamsWritable → MLWritable
  128. def writeTensorflowHub(path: String, tfPath: String, spark: SparkSession, suffix: String = "_use"): Unit

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    Definition Classes
    WriteTensorflowModel
  129. def writeTensorflowModel(path: String, spark: SparkSession, tensorflow: TensorflowWrapper, suffix: String, filename: String, configProtoBytes: Option[Array[Byte]] = None): Unit

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    Definition Classes
    WriteTensorflowModel
  130. def writeTensorflowModelV2(path: String, spark: SparkSession, tensorflow: TensorflowWrapper, suffix: String, filename: String, configProtoBytes: Option[Array[Byte]] = None, savedSignatures: Option[Map[String, String]] = None): Unit

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    Definition Classes
    WriteTensorflowModel

Inherited from HasStorageRef

Inherited from WriteTensorflowModel

Inherited from CanBeLazy

Inherited from HasOutputAnnotationCol

Inherited from HasInputAnnotationCols

Inherited from HasOutputAnnotatorType

Inherited from ParamsAndFeaturesWritable

Inherited from HasFeatures

Inherited from DefaultParamsWritable

Inherited from MLWritable

Inherited from Model[MultiClassifierDLModel]

Inherited from Transformer

Inherited from PipelineStage

Inherited from Logging

Inherited from Params

Inherited from Serializable

Inherited from Serializable

Inherited from Identifiable

Inherited from AnyRef

Inherited from Any

Parameters

A list of (hyper-)parameter keys this annotator can take. Users can set and get the parameter values through setters and getters, respectively.

Annotator types

Required input and expected output annotator types

Members

Parameter setters

Parameter getters