org.aksw.limes.core.gui.util

Class AdvancedMemoryCache

java.lang.Object

org.aksw.limes.core.io.cache.ACache

org.aksw.limes.core.io.cache.MemoryCache

org.aksw.limes.core.gui.util.AdvancedMemoryCache

All Implemented Interfaces:

Serializable, ICache

public class AdvancedMemoryCache
extends MemoryCache
implements Serializable

subclass of memory cache extended with getCommonProperties(Double, Integer)

Author:

Daniel Obraczka < soz11ffe@ studserv.uni-leipzig.de>

See Also:

Serialized Form

Field Summary

Fields inherited from class org.aksw.limes.core.io.cache.MemoryCache

instanceIterator, instanceMap

Constructor Summary

Constructors

Constructor and Description
AdvancedMemoryCache()

Method Summary

Modifier and Type	Method and Description
String[]	getCommonProperties(Double threshold, Integer limit)
static AdvancedMemoryCache	loadFromFile(File file)

Methods inherited from class org.aksw.limes.core.io.cache.MemoryCache

addInstance, addProperty, addTriple, clone, containsInstance, containsUri, equals, getAllInstances, getAllProperties, getAllUris, getInstance, getNextInstance, getSample, hashCode, parseCSVtoRDFModel, replaceInstance, resetIterator, size, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

AdvancedMemoryCache

public AdvancedMemoryCache()

Method Detail

loadFromFile

public static AdvancedMemoryCache loadFromFile(File file)
                                        throws IOException

Throws:

IOException

getCommonProperties

public String[] getCommonProperties(Double threshold,
                                    Integer limit)

Parameters:

threshold - a value between 0 and 1, specifying what fraction of the instances must have this property for it to be counted as common property. Set to 0 if you want no restriction on this.

limit - a non-negative integer value, specifying the maximum amount of properties to return. If there are more than limit after the exclusion with threshold, the most common properties of those are returned.

Returns:

the most common properties sorted by occurrence in descending order. Each property p is counted at most once for each instance s, even if there are multiple triples (s,p,o). * Example: getCommonProperties(0.5) will only return properties which are used by at least half of the uris in the cache.