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java.lang.Objectde.lmu.ifi.dbs.elki.logging.AbstractLoggable
de.lmu.ifi.dbs.elki.utilities.optionhandling.AbstractParameterizable
de.lmu.ifi.dbs.elki.distance.AbstractMeasurementFunction<O,D>
de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractDistanceFunction<O,FloatDistance>
de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractFloatDistanceFunction<V>
de.lmu.ifi.dbs.elki.distance.distancefunction.external.DiskCacheBasedFloatDistanceFunction<V>
V
- object typepublic class DiskCacheBasedFloatDistanceFunction<V extends DatabaseObject>
Provides a DistanceFunction that is based on float distances given by a distance matrix of an external file.
Field Summary | |
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private OnDiskUpperTriangleMatrix |
cache
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static int |
FLOAT_CACHE_MAGIC
Magic to identify double cache matrices |
private static int |
FLOAT_SIZE
Storage required for a float value. |
static OptionID |
MATRIX_ID
OptionID for MATRIX_PARAM |
private FileParameter |
MATRIX_PARAM
Parameter that specifies the name of the directory to be re-parsed. |
Fields inherited from class de.lmu.ifi.dbs.elki.distance.AbstractMeasurementFunction |
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INFINITY_PATTERN |
Fields inherited from class de.lmu.ifi.dbs.elki.utilities.optionhandling.AbstractParameterizable |
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optionHandler |
Fields inherited from class de.lmu.ifi.dbs.elki.logging.AbstractLoggable |
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debug, logger |
Constructor Summary | |
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DiskCacheBasedFloatDistanceFunction()
Default constructor. |
Method Summary | |
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FloatDistance |
distance(Integer id1,
Integer id2)
Returns the distance between the two objects specified by their objects ids. |
FloatDistance |
distance(Integer id1,
V o2)
Returns the distance between the two specified objects. |
FloatDistance |
distance(V o1,
V o2)
Computes the distance between two given DatabaseObjects according to this distance function. |
List<String> |
setParameters(List<String> args)
Grabs all specified options from the option handler. |
Methods inherited from class de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractFloatDistanceFunction |
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infiniteDistance, nullDistance, undefinedDistance, valueOf |
Methods inherited from class de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractDistanceFunction |
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isInfiniteDistance, isNullDistance, isUndefinedDistance |
Methods inherited from class de.lmu.ifi.dbs.elki.distance.AbstractMeasurementFunction |
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getDatabase, matches, requiredInputPattern, setDatabase, setRequiredInputPattern, shortDescription |
Methods inherited from class de.lmu.ifi.dbs.elki.utilities.optionhandling.AbstractParameterizable |
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addOption, addParameterizable, addParameterizable, checkGlobalParameterConstraints, collectOptions, getAttributeSettings, getParameters, rememberParametersExcept, removeOption, removeParameterizable |
Methods inherited from class de.lmu.ifi.dbs.elki.logging.AbstractLoggable |
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debugFine, debugFiner, debugFinest, exception, progress, verbose, warning |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface de.lmu.ifi.dbs.elki.distance.MeasurementFunction |
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requiredInputPattern, setDatabase |
Methods inherited from interface de.lmu.ifi.dbs.elki.utilities.optionhandling.Parameterizable |
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checkGlobalParameterConstraints, collectOptions, getParameters, shortDescription |
Field Detail |
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public static final int FLOAT_CACHE_MAGIC
public static final OptionID MATRIX_ID
MATRIX_PARAM
private static final int FLOAT_SIZE
private final FileParameter MATRIX_PARAM
Key: -distance.matrix
private OnDiskUpperTriangleMatrix cache
Constructor Detail |
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public DiskCacheBasedFloatDistanceFunction()
Method Detail |
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public FloatDistance distance(V o1, V o2)
o1
- first DatabaseObjecto2
- second DatabaseObject
public FloatDistance distance(Integer id1, V o2)
distance
in interface DistanceFunction<V extends DatabaseObject,FloatDistance>
distance
in class AbstractDistanceFunction<V extends DatabaseObject,FloatDistance>
id1
- first object ido2
- second DatabaseObject
public FloatDistance distance(Integer id1, Integer id2)
distance
in interface DistanceFunction<V extends DatabaseObject,FloatDistance>
distance
in class AbstractDistanceFunction<V extends DatabaseObject,FloatDistance>
id1
- first object idid2
- second object id
public List<String> setParameters(List<String> args) throws ParameterException
AbstractParameterizable
{ ListremainingParameters = super.setParameters(args); // set parameters for your class // for example like this: if(isSet(MY_PARAM_VALUE_PARAM)) { myParamValue = getParameterValue(MY_PARAM_VALUE_PARAM); } . . . return remainingParameters; // or in case of attributes requesting parameters themselves // return parameterizableAttribbute.setParameters(remainingParameters); }
setParameters
in interface Parameterizable
setParameters
in class AbstractParameterizable
args
- parameters to set the attributes accordingly to
ParameterException
- in case of wrong parameter-setting
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