org.basex.query.xquery.util
Class Scoring

java.lang.Object
  org.basex.query.xquery.util.Scoring

public final class Scoring
extends java.lang.Object

Scoring class, assembling all scoring calculations. Current scoring model is very simple.

Author:

Workgroup DBIS, University of Konstanz 2005-08, ISC License, Christian Gruen

Field Summary

static double	DEFAULT Default scoring value.
static double	LOG Logarithmic base for calculating the score value.

Method Summary

static double	and(double s1, double s2) Combines two scoring values.
static double	finish(double s) Creates a final scoring value.
static double	or(double s1, double s2) Combines two scoring values.
static double	step(double s) Returns a scoring after a location step traversal.
static double	word(int tl, double l) Calculates a score value, based on the token length and complete text length.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT

public static final double DEFAULT

Default scoring value.

See Also:

Constant Field Values

LOG

public static final double LOG

Logarithmic base for calculating the score value.

See Also:

Constant Field Values

Method Detail

step

public static double step(double s)

Returns a scoring after a location step traversal.

Parameters:

s - input value

Returns:

result

word

public static double word(int tl,
                          double l)

Calculates a score value, based on the token length and complete text length.

Parameters:

tl - token length

l - complete length

Returns:

result

and

public static double and(double s1,
                         double s2)

Combines two scoring values.

Parameters:

s1 - first value

s2 - second value

Returns:

result

or

public static double or(double s1,
                        double s2)

Combines two scoring values.

Parameters:

s1 - first value

s2 - second value

Returns:

result

finish

public static double finish(double s)

Creates a final scoring value.

Parameters:

s - input value

Returns:

result