Package elki.datasource

Class GeneratorXMLDatabaseConnection

java.lang.Object

elki.datasource.AbstractDatabaseConnection

elki.datasource.GeneratorXMLDatabaseConnection

All Implemented Interfaces:

DatabaseConnection

public class GeneratorXMLDatabaseConnection
extends AbstractDatabaseConnection

Data source from an XML specification.

This data source will generate random (or pseudo-random, fixed seeds are supported) data sets that satisfy a given specification file.

Since:

0.2

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	GeneratorXMLDatabaseConnection.Par	Parameterization class.

Field Summary

Fields

Modifier and Type	Field	Description
static java.lang.String	ATTR_ANGLE	Rotation angle
static java.lang.String	ATTR_AXIS1	First axis for rotation plane
static java.lang.String	ATTR_AXIS2	Second axis for rotation plane
static java.lang.String	ATTR_DENSITY	Density correction factor
static java.lang.String	ATTR_K	Gamma k
static java.lang.String	ATTR_MAX	Maximum value
static java.lang.String	ATTR_MEAN	Mean
static java.lang.String	ATTR_MIN	Minimum value
static java.lang.String	ATTR_NAME	Cluster nane
static java.lang.String	ATTR_SEED	Random seed
static java.lang.String	ATTR_SIZE	Cluster size
static java.lang.String	ATTR_STDDEV	Standard deviation
static java.lang.String	ATTR_TEST	Attribute to control model testing
static java.lang.String	ATTR_THETA	Gamma theta
static java.lang.String	ATTR_VECTOR	Vector
private RandomFactory	clusterRandom	Random generator used for initializing cluster generators.
static java.lang.String	GENERATOR_SCHEMA_FILE	File name of the generators XML Schema file.
private static Logging	LOG	Logger
(package private) java.util.regex.Pattern	reassign	Pattern for clusters to reassign.
private boolean	reassignByDistance	Reassign objects by distance instead of density
(package private) double	sizescale	Parameter for scaling the cluster sizes.
(package private) java.net.URI	specfile	The configuration file.
static java.lang.String	TAG_CLIP	Clipping
static java.lang.String	TAG_CLUSTER	Cluster tag
static java.lang.String	TAG_DATASET	Dataset tag
static java.lang.String	TAG_GAMMA	Gamma distribution
static java.lang.String	TAG_HALTON	Halton pseudo uniform distribution.
static java.lang.String	TAG_NORMAL	Normal distribution
static java.lang.String	TAG_POINT	Point in static cluster
static java.lang.String	TAG_ROTATE	Rotation
static java.lang.String	TAG_STATIC	Static cluster
static java.lang.String	TAG_TRANSLATE	Translation
static java.lang.String	TAG_UNIFORM	Uniform distribution
private java.lang.Boolean	testAgainstModel	Set testAgainstModel flag
static java.util.regex.Pattern	WHITESPACE_PATTERN	A pattern defining whitespace.

Fields inherited from class elki.datasource.AbstractDatabaseConnection

filters, LABEL_CONCATENATION

Constructor Summary

Constructors

Constructor	Description
GeneratorXMLDatabaseConnection(java.util.List<? extends ObjectFilter> filters, java.net.URI specfile, double sizescale, java.util.regex.Pattern reassign, boolean reassignByDistance, RandomFactory clusterRandom)	Constructor.

Method Summary

Modifier and Type	Method	Description
protected Logging	getLogger()	Get the logger for this database connection.
MultipleObjectsBundle	loadData()	Returns the initial data for a database.
private GeneratorMain	loadXMLSpecification()	Load the XML configuration file.
private double[]	parseVector(java.lang.String s)	Parse a string into a vector.
private void	processElementClipping(GeneratorSingleCluster cluster, org.w3c.dom.Node cur)	Process a 'clipping' Element in the XML stream.
private void	processElementCluster(GeneratorMain gen, org.w3c.dom.Node cur)	Process a 'cluster' Element in the XML stream.
private void	processElementDataset(GeneratorMain gen, org.w3c.dom.Node cur)	Process a 'dataset' Element in the XML stream.
private void	processElementGamma(GeneratorSingleCluster cluster, org.w3c.dom.Node cur)	Process a 'gamma' Element in the XML stream.
private void	processElementHalton(GeneratorSingleCluster cluster, org.w3c.dom.Node cur)	Process a 'halton' Element in the XML stream.
private void	processElementNormal(GeneratorSingleCluster cluster, org.w3c.dom.Node cur)	Process a 'normal' Element in the XML stream.
private void	processElementPoint(java.util.List<double[]> points, org.w3c.dom.Node cur)	Parse a 'point' element (point vector for a static cluster)
private void	processElementRotate(GeneratorSingleCluster cluster, org.w3c.dom.Node cur)	Process a 'rotate' Element in the XML stream.
private void	processElementStatic(GeneratorMain gen, org.w3c.dom.Node cur)	Process a 'static' cluster Element in the XML stream.
private void	processElementTranslate(GeneratorSingleCluster cluster, org.w3c.dom.Node cur)	Process a 'translate' Element in the XML stream.
private void	processElementUniform(GeneratorSingleCluster cluster, org.w3c.dom.Node cur)	Process a 'uniform' Element in the XML stream.

Methods inherited from class elki.datasource.AbstractDatabaseConnection

invokeBundleFilters, invokeStreamFilters

Methods inherited from class java.lang.Object

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

Field Detail

TAG_DATASET

public static final java.lang.String TAG_DATASET

Dataset tag

See Also:

Constant Field Values

TAG_CLUSTER

public static final java.lang.String TAG_CLUSTER

Cluster tag

See Also:

Constant Field Values

TAG_UNIFORM

public static final java.lang.String TAG_UNIFORM

Uniform distribution

See Also:

Constant Field Values

TAG_NORMAL

public static final java.lang.String TAG_NORMAL

Normal distribution

See Also:

Constant Field Values

TAG_GAMMA

public static final java.lang.String TAG_GAMMA

Gamma distribution

See Also:

Constant Field Values

TAG_HALTON

public static final java.lang.String TAG_HALTON

Halton pseudo uniform distribution.

See Also:

Constant Field Values

TAG_ROTATE

public static final java.lang.String TAG_ROTATE

Rotation

See Also:

Constant Field Values

TAG_TRANSLATE

public static final java.lang.String TAG_TRANSLATE

Translation

See Also:

Constant Field Values

TAG_CLIP

public static final java.lang.String TAG_CLIP

Clipping

See Also:

Constant Field Values

TAG_STATIC

public static final java.lang.String TAG_STATIC

Static cluster

See Also:

Constant Field Values

TAG_POINT

public static final java.lang.String TAG_POINT

Point in static cluster

See Also:

Constant Field Values

ATTR_TEST

public static final java.lang.String ATTR_TEST

Attribute to control model testing

See Also:

Constant Field Values

ATTR_SEED

public static final java.lang.String ATTR_SEED

Random seed

See Also:

Constant Field Values

ATTR_DENSITY

public static final java.lang.String ATTR_DENSITY

Density correction factor

See Also:

Constant Field Values

ATTR_NAME

public static final java.lang.String ATTR_NAME

Cluster nane

See Also:

Constant Field Values

ATTR_SIZE

public static final java.lang.String ATTR_SIZE

Cluster size

See Also:

Constant Field Values

ATTR_MIN

public static final java.lang.String ATTR_MIN

Minimum value

See Also:

Constant Field Values

ATTR_MAX

public static final java.lang.String ATTR_MAX

Maximum value

See Also:

Constant Field Values

ATTR_MEAN

public static final java.lang.String ATTR_MEAN

Mean

See Also:

Constant Field Values

ATTR_STDDEV

public static final java.lang.String ATTR_STDDEV

Standard deviation

See Also:

Constant Field Values

ATTR_K

public static final java.lang.String ATTR_K

Gamma k

See Also:

Constant Field Values

ATTR_THETA

public static final java.lang.String ATTR_THETA

Gamma theta

See Also:

Constant Field Values

ATTR_VECTOR

public static final java.lang.String ATTR_VECTOR

Vector

See Also:

Constant Field Values

ATTR_AXIS1

public static final java.lang.String ATTR_AXIS1

First axis for rotation plane

See Also:

Constant Field Values

ATTR_AXIS2

public static final java.lang.String ATTR_AXIS2

Second axis for rotation plane

See Also:

Constant Field Values

ATTR_ANGLE

public static final java.lang.String ATTR_ANGLE

Rotation angle

See Also:

Constant Field Values

LOG

private static final Logging LOG

Logger

WHITESPACE_PATTERN

public static final java.util.regex.Pattern WHITESPACE_PATTERN

A pattern defining whitespace.

GENERATOR_SCHEMA_FILE

public static final java.lang.String GENERATOR_SCHEMA_FILE

File name of the generators XML Schema file.

specfile

java.net.URI specfile

The configuration file.

sizescale

double sizescale

Parameter for scaling the cluster sizes.

reassign

java.util.regex.Pattern reassign

Pattern for clusters to reassign.

clusterRandom

private RandomFactory clusterRandom

Random generator used for initializing cluster generators.

testAgainstModel

private java.lang.Boolean testAgainstModel

Set testAgainstModel flag

reassignByDistance

private boolean reassignByDistance

Reassign objects by distance instead of density

Constructor Detail

GeneratorXMLDatabaseConnection

public GeneratorXMLDatabaseConnection(java.util.List<? extends ObjectFilter> filters,
                                      java.net.URI specfile,
                                      double sizescale,
                                      java.util.regex.Pattern reassign,
                                      boolean reassignByDistance,
                                      RandomFactory clusterRandom)

Constructor.

Parameters:

filters - Filters.

specfile - Specification file

sizescale - Size scaling

reassign - Reassignment pattern

reassignByDistance - Reassign objects by distance instead of density

clusterRandom - Random number generator

Method Detail

loadData

public MultipleObjectsBundle loadData()

Description copied from interface: DatabaseConnection

Returns the initial data for a database.

Returns:

a database object bundle

loadXMLSpecification

private GeneratorMain loadXMLSpecification()

Load the XML configuration file.

Returns:

Generator

processElementDataset

private void processElementDataset(GeneratorMain gen,
                                   org.w3c.dom.Node cur)

Process a 'dataset' Element in the XML stream.

Parameters:

gen - Generator

cur - Current document nod

processElementCluster

private void processElementCluster(GeneratorMain gen,
                                   org.w3c.dom.Node cur)

Process a 'cluster' Element in the XML stream.

Parameters:

gen - Generator

cur - Current document nod

processElementUniform

private void processElementUniform(GeneratorSingleCluster cluster,
                                   org.w3c.dom.Node cur)

Process a 'uniform' Element in the XML stream.

Parameters:

cluster -

cur - Current document nod

processElementNormal

private void processElementNormal(GeneratorSingleCluster cluster,
                                  org.w3c.dom.Node cur)

Process a 'normal' Element in the XML stream.

Parameters:

cluster -

cur - Current document nod

processElementGamma

private void processElementGamma(GeneratorSingleCluster cluster,
                                 org.w3c.dom.Node cur)

Process a 'gamma' Element in the XML stream.

Parameters:

cluster -

cur - Current document nod

processElementHalton

private void processElementHalton(GeneratorSingleCluster cluster,
                                  org.w3c.dom.Node cur)

Process a 'halton' Element in the XML stream.

Parameters:

cluster -

cur - Current document nod

processElementRotate

private void processElementRotate(GeneratorSingleCluster cluster,
                                  org.w3c.dom.Node cur)

Process a 'rotate' Element in the XML stream.

Parameters:

cluster -

cur - Current document nod

processElementTranslate

private void processElementTranslate(GeneratorSingleCluster cluster,
                                     org.w3c.dom.Node cur)

Process a 'translate' Element in the XML stream.

Parameters:

cluster -

cur - Current document nod

processElementClipping

private void processElementClipping(GeneratorSingleCluster cluster,
                                    org.w3c.dom.Node cur)

Process a 'clipping' Element in the XML stream.

Parameters:

cluster -

cur - Current document nod

processElementStatic

private void processElementStatic(GeneratorMain gen,
                                  org.w3c.dom.Node cur)

Process a 'static' cluster Element in the XML stream.

Parameters:

gen - Generator

cur - Current document nod

processElementPoint

private void processElementPoint(java.util.List<double[]> points,
                                 org.w3c.dom.Node cur)

Parse a 'point' element (point vector for a static cluster)

Parameters:

points - current list of points (to append to)

cur - Current document nod

parseVector

private double[] parseVector(java.lang.String s)

Parse a string into a vector.

TODO: Rewrite this using the new Tokenizer

Parameters:

s - String to parse

Returns:

Vector

getLogger

protected Logging getLogger()

Description copied from class: AbstractDatabaseConnection

Get the logger for this database connection.

Specified by:

getLogger in class AbstractDatabaseConnection

Returns:

Logger