org.apache.spark.mllib.fpm

PrefixSpan

class PrefixSpan extends Logging with Serializable

:: Experimental ::

A parallel PrefixSpan algorithm to mine frequent sequential patterns. The PrefixSpan algorithm is described in J. Pei, et al., PrefixSpan: Mining Sequential Patterns Efficiently by Prefix-Projected Pattern Growth (http://doi.org/10.1109/ICDE.2001.914830).

Annotations
@Experimental() @Since( "1.5.0" )
Source
PrefixSpan.scala
See also

Sequential Pattern Mining (Wikipedia)

Linear Supertypes
Serializable, Serializable, Logging, AnyRef, Any
Ordering
  1. Alphabetic
  2. By inheritance
Inherited
  1. PrefixSpan
  2. Serializable
  3. Serializable
  4. Logging
  5. AnyRef
  6. Any
  1. Hide All
  2. Show all
Learn more about member selection
Visibility
  1. Public
  2. All

Instance Constructors

  1. new PrefixSpan()

    Constructs a default instance with default parameters {minSupport: 0.1, maxPatternLength: 10, maxLocalProjDBSize: 32000000L}.

    Constructs a default instance with default parameters {minSupport: 0.1, maxPatternLength: 10, maxLocalProjDBSize: 32000000L}.

    Annotations
    @Since( "1.5.0" )

Value Members

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

    Definition Classes
    AnyRef
  2. final def !=(arg0: Any): Boolean

    Definition Classes
    Any
  3. final def ##(): Int

    Definition Classes
    AnyRef → Any
  4. final def ==(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  5. final def ==(arg0: Any): Boolean

    Definition Classes
    Any
  6. final def asInstanceOf[T0]: T0

    Definition Classes
    Any
  7. def clone(): AnyRef

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  8. final def eq(arg0: AnyRef): Boolean

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

    Definition Classes
    AnyRef → Any
  10. def finalize(): Unit

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  11. final def getClass(): Class[_]

    Definition Classes
    AnyRef → Any
  12. def getMaxLocalProjDBSize: Long

    Gets the maximum number of items allowed in a projected database before local processing.

    Gets the maximum number of items allowed in a projected database before local processing.

    Annotations
    @Since( "1.5.0" )
  13. def getMaxPatternLength: Int

    Gets the maximal pattern length (i.

    Gets the maximal pattern length (i.e. the length of the longest sequential pattern to consider.

    Annotations
    @Since( "1.5.0" )
  14. def getMinSupport: Double

    Get the minimal support (i.

    Get the minimal support (i.e. the frequency of occurrence before a pattern is considered frequent).

    Annotations
    @Since( "1.5.0" )
  15. def hashCode(): Int

    Definition Classes
    AnyRef → Any
  16. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any
  17. def isTraceEnabled(): Boolean

    Attributes
    protected
    Definition Classes
    Logging
  18. def log: Logger

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

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

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

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

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

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

    Attributes
    protected
    Definition Classes
    Logging
  25. def logName: String

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

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

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

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

    Attributes
    protected
    Definition Classes
    Logging
  30. final def ne(arg0: AnyRef): Boolean

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

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

    Definition Classes
    AnyRef
  33. def run[Item, Itemset <: Iterable[Item], Sequence <: Iterable[Itemset]](data: JavaRDD[Sequence]): PrefixSpanModel[Item]

    A Java-friendly version of run() that reads sequences from a JavaRDD and returns frequent sequences in a PrefixSpanModel.

    A Java-friendly version of run() that reads sequences from a JavaRDD and returns frequent sequences in a PrefixSpanModel.

    Item

    item type

    Itemset

    itemset type, which is an Iterable of Items

    Sequence

    sequence type, which is an Iterable of Itemsets

    data

    ordered sequences of itemsets stored as Java Iterable of Iterables

    returns

    a PrefixSpanModel that contains the frequent sequential patterns

    Annotations
    @Since( "1.5.0" )
  34. def run[Item](data: RDD[Array[Array[Item]]])(implicit arg0: ClassTag[Item]): PrefixSpanModel[Item]

    Finds the complete set of frequent sequential patterns in the input sequences of itemsets.

    Finds the complete set of frequent sequential patterns in the input sequences of itemsets.

    data

    sequences of itemsets.

    returns

    a PrefixSpanModel that contains the frequent patterns

    Annotations
    @Since( "1.5.0" )
  35. def setMaxLocalProjDBSize(maxLocalProjDBSize: Long): PrefixSpan.this.type

    Sets the maximum number of items (including delimiters used in the internal storage format) allowed in a projected database before local processing (default: 32000000L).

    Sets the maximum number of items (including delimiters used in the internal storage format) allowed in a projected database before local processing (default: 32000000L).

    Annotations
    @Since( "1.5.0" )
  36. def setMaxPatternLength(maxPatternLength: Int): PrefixSpan.this.type

    Sets maximal pattern length (default: 10).

    Sets maximal pattern length (default: 10).

    Annotations
    @Since( "1.5.0" )
  37. def setMinSupport(minSupport: Double): PrefixSpan.this.type

    Sets the minimal support level (default: 0.1).

    Sets the minimal support level (default: 0.1).

    Annotations
    @Since( "1.5.0" )
  38. final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
    AnyRef
  39. def toString(): String

    Definition Classes
    AnyRef → Any
  40. final def wait(): Unit

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

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

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from Serializable

Inherited from Serializable

Inherited from Logging

Inherited from AnyRef

Inherited from Any

Ungrouped