de.lmu.ifi.dbs.elki.data
Class FloatVector

java.lang.Object
  de.lmu.ifi.dbs.elki.logging.AbstractLoggable
      de.lmu.ifi.dbs.elki.data.AbstractDatabaseObject
          de.lmu.ifi.dbs.elki.data.NumberVector<V,N>
              de.lmu.ifi.dbs.elki.data.RealVector<FloatVector,Float>
                  de.lmu.ifi.dbs.elki.data.FloatVector

All Implemented Interfaces:

WekaObject<WekaNumericAttribute>, DatabaseObject, FeatureVector<FloatVector,Float>, SpatialComparable, SpatialObject, Loggable

public class FloatVector
extends RealVector<FloatVector,Float>

A FloatVector is to store real values approximately as float values.

Author:

Elke Achtert

Field Summary

private float[]

values Keeps the values of the float vector

Fields inherited from class de.lmu.ifi.dbs.elki.data.NumberVector

ATTRIBUTE_SEPARATOR

Fields inherited from class de.lmu.ifi.dbs.elki.logging.AbstractLoggable

debug

Constructor Summary

FloatVector(float[] values)
Provides a FloatVector consisting of the given float values.

FloatVector(Float[] values)
Provides a FloatVector consisting of the given float values.

FloatVector(List<Float> values)
Provides a FloatVector consisting of float values according to the given Float values.

Method Summary

Vector	getColumnVector() Returns a Vector representing in one column and getDimensionality() rows the values of this FeatureVector.
int	getDimensionality() The dimensionality of the vector space whereof this FeatureVector is an element.
Matrix	getRowVector() Returns a Matrix representing in one row and getDimensionality() columns the values of this FeatureVector.
Float	getValue(int dimension) Returns the value in the specified dimension.
FloatVector	multiplicate(double k) Returns a new FeatureVector that is the result of a scalar multiplication with the given scalar.
FloatVector	negativeVector() Returns the additive inverse to this FeatureVector.
FloatVector	newInstance(double[] values) Returns a new RealVector of N for the given values.
FloatVector	nullVector() Provides a null vector of the same Feature Vector Space as this FeatureVector (that is, of the same dimensionality).
FloatVector	plus(FloatVector fv) Returns a new FeatureVector that is the sum of this FeatureVector and the given FeatureVector.
FloatVector	randomInstance(Float min, Float max, Random random) Returns a FeatureVector of T with random values between min and max.
FloatVector	randomInstance(Random random) Returns a new FloatVector with values between 0 and 1.
String	toString() Returns a String representation of the FeatureVector as a line that is suitable to be printed in a sequential file.

Methods inherited from class de.lmu.ifi.dbs.elki.data.NumberVector

equals, getAttributes, getMax, getMin, newInstance

Methods inherited from class de.lmu.ifi.dbs.elki.data.AbstractDatabaseObject

getID, setID

Methods inherited from class de.lmu.ifi.dbs.elki.logging.AbstractLoggable

debugFine, debugFiner, debugFinest, exception, message, progress, progress, progress, verbose, verbose, warning

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface de.lmu.ifi.dbs.elki.data.DatabaseObject

getID, setID

Methods inherited from interface de.lmu.ifi.dbs.elki.index.tree.spatial.SpatialObject

getID

Field Detail

values

private float[] values

Keeps the values of the float vector

Constructor Detail

FloatVector

public FloatVector(List<Float> values)

Provides a FloatVector consisting of float values according to the given Float values.

Parameters:

values - the values to be set as values of the float vector

FloatVector

public FloatVector(float[] values)

Provides a FloatVector consisting of the given float values.

Parameters:

values - the values to be set as values of the float vector

FloatVector

public FloatVector(Float[] values)

Provides a FloatVector consisting of the given float values.

Parameters:

values - the values to be set as values of the float vector

Method Detail

newInstance

public FloatVector newInstance(double[] values)

Description copied from class: RealVector

Returns a new RealVector of N for the given values.

Specified by:

newInstance in class RealVector<FloatVector,Float>

Parameters:

values - the values of the featureVector

Returns:

a new DoubleVector with the specified values

See Also:

RealVector.newInstance(double[])

randomInstance

public FloatVector randomInstance(Random random)

Returns a new FloatVector with values between 0 and 1.

Parameters:

random - a Random instance

Returns:

a FeatureVector of T with random values

See Also:

FeatureVector.randomInstance(java.util.Random)

randomInstance

public FloatVector randomInstance(Float min,
                                  Float max,
                                  Random random)

Description copied from interface: FeatureVector

Returns a FeatureVector of T with random values between min and max.

Parameters:

min - minimum of random value

max - maximu of random value

random - a random instance

Returns:

a FeatureVector of T with random values between min and max

See Also:

FeatureVector.randomInstance(Number, Number, java.util.Random)

getDimensionality

public int getDimensionality()

Description copied from interface: FeatureVector

The dimensionality of the vector space whereof this FeatureVector is an element.

Returns:

the number of dimensions of this FeatureVector

See Also:

FeatureVector.getDimensionality()

getValue

public Float getValue(int dimension)

Description copied from interface: FeatureVector

Returns the value in the specified dimension.

Parameters:

dimension - the desired dimension, where 1 ≤ dimension ≤ this.getDimensionality()

Returns:

the value in the specified dimension

See Also:

FeatureVector.getValue(int)

getColumnVector

public Vector getColumnVector()

Description copied from interface: FeatureVector

Returns a Vector representing in one column and getDimensionality() rows the values of this FeatureVector.

Returns:

a Matrix representing in one column and getDimensionality() rows the values of this FeatureVector

See Also:

FeatureVector.getColumnVector()

getRowVector

public Matrix getRowVector()

Description copied from interface: FeatureVector

Returns a Matrix representing in one row and getDimensionality() columns the values of this FeatureVector.

Returns:

a Matrix representing in one row and getDimensionality() columns the values of this FeatureVector

See Also:

FeatureVector.getRowVector()

plus

public FloatVector plus(FloatVector fv)

Description copied from interface: FeatureVector

Returns a new FeatureVector that is the sum of this FeatureVector and the given FeatureVector.

Parameters:

fv - a FeatureVector to be added to this Featurevector

Returns:

a new FeatureVector that is the sum of this FeatureVector and the given FeatureVector

See Also:

FeatureVector.plus(FeatureVector)

nullVector

public FloatVector nullVector()

Description copied from interface: FeatureVector

Provides a null vector of the same Feature Vector Space as this FeatureVector (that is, of the same dimensionality).

Returns:

a null vector of the same Feature Vector Space as this FeatureVector (that is, of the same dimensionality)

See Also:

FeatureVector.nullVector()

negativeVector

public FloatVector negativeVector()

Description copied from interface: FeatureVector

Returns the additive inverse to this FeatureVector.

Returns:

the additive inverse to this FeatureVector

See Also:

FeatureVector.negativeVector()

multiplicate

public FloatVector multiplicate(double k)

Description copied from interface: FeatureVector

Returns a new FeatureVector that is the result of a scalar multiplication with the given scalar.

Parameters:

k - a scalar to multiply this FeatureVector with

Returns:

a new FeatureVector that is the result of a scalar multiplication with the given scalar

See Also:

FeatureVector.multiplicate(double)

toString

public String toString()

Description copied from interface: FeatureVector

Returns a String representation of the FeatureVector as a line that is suitable to be printed in a sequential file.

Specified by:

toString in interface FeatureVector<FloatVector,Float>

Overrides:

toString in class Object

Returns:

a String representation of the FeatureVector

See Also:

FeatureVector.toString()