RunningAverage

Interface for classes that can keep track of a running average of a series of numbers. One can add to or remove from the series, as well as update a datum in the series. The class does not actually keep track of the series of values, just its running average, so it doesn't even matter if you remove/change a value that wasn't added.

Ported from org.apache.mahout.cf.taste.impl.common.RunningAverage.java

Linear Supertypes

AnyRef, Any

Known Subclasses

FullRunningAverage, FullRunningAverageAndStdDev, InvertedRunningAverage, InvertedRunningAverageAndStdDev, RunningAverageAndStdDev

Abstract Value Members

abstract def addDatum(datum: Double): Unit

datum
new item to add to the running average

Exceptions thrown
IllegalArgumentException
if datum is { @link Double#NaN}
abstract def changeDatum(delta: Double): Unit

delta
amount by which to change a datum in the running average

Exceptions thrown
IllegalArgumentException
if delta is { @link Double#NaN}
IllegalStateException
if count is 0
abstract def getAverage: Double
abstract def getCount: Int
abstract def inverse: RunningAverage

returns
a (possibly immutable) object whose average is the negative of this object's
abstract def removeDatum(datum: Double): Unit

datum
item to remove to the running average

Exceptions thrown
IllegalArgumentException
if datum is { @link Double#NaN}
IllegalStateException
if count is 0

Concrete Value Members

final def !=(arg0: AnyRef): Boolean

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

Definition Classes
Any
final def ##(): Int

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

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

Definition Classes
Any
final def asInstanceOf[T0]: T0

Definition Classes
Any
def clone(): AnyRef

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

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

Definition Classes
AnyRef → Any
def finalize(): Unit

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

Definition Classes
AnyRef → Any
def hashCode(): Int

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

Definition Classes
Any
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

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

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

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

Definition Classes
AnyRef
Annotations
@throws( ... )

trait RunningAverage extends AnyRef

Abstract Value Members

abstract def addDatum(datum: Double): Unit

abstract def changeDatum(delta: Double): Unit

abstract def getAverage: Double

abstract def getCount: Int

abstract def inverse: RunningAverage

abstract def removeDatum(datum: Double): Unit

Concrete Value Members

final def !=(arg0: AnyRef): Boolean

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: AnyRef): Boolean

final def ==(arg0: Any): Boolean

final def asInstanceOf[T0]: T0

def clone(): AnyRef

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

def finalize(): Unit

final def getClass(): Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

final def synchronized[T0](arg0: ⇒ T0): T0

def toString(): String

final def wait(): Unit

final def wait(arg0: Long, arg1: Int): Unit

final def wait(arg0: Long): Unit

Inherited from AnyRef

Inherited from Any

Ungrouped