org.carrot2.clustering.synthetic
Class ByUrlClusteringAlgorithm

java.lang.Object
  org.carrot2.core.ProcessingComponentBase
      org.carrot2.clustering.synthetic.ByUrlClusteringAlgorithm

All Implemented Interfaces:

IClusteringAlgorithm, IProcessingComponent

public class ByUrlClusteringAlgorithm
extends ProcessingComponentBase
implements IClusteringAlgorithm

Hierarchically clusters documents according to their content URLs. Document.CONTENT_URL property will be used to obtain a document's URL.

Groups at the top level of the hierarchy will correspond to the last segments of the URLs, usually domain suffixes, such as ".com" or ".co.uk". Subgroups will be created based on further segments of the URLs, very often domains subdomains, e.g. "yahoo.com", "bbc.co.uk" and then e.g. "mail.yahoo.com", "news.yahoo.com". The "www" segment of the URLs will be ignored.

Clusters will be ordered by size (number of documents) descendingly; in case of equal sizes, alphabetically by URL, see Cluster.BY_REVERSED_SIZE_AND_LABEL_COMPARATOR.

Attribute label:

By URL Clustering

Field Summary

List<Cluster>	clusters Clusters created by the algorithm.
List<Document>	documents Documents to cluster.

Constructor Summary

ByUrlClusteringAlgorithm()

Method Summary

void	process() Performs by URL clustering.

Methods inherited from class org.carrot2.core.ProcessingComponentBase

afterProcessing, beforeProcessing, dispose, getContext, getSharedExecutor, init

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.carrot2.core.IProcessingComponent

afterProcessing, beforeProcessing, dispose, init

Field Detail

documents

public List<Document> documents

Documents to cluster.

clusters

public List<Cluster> clusters

Clusters created by the algorithm.

Constructor Detail

ByUrlClusteringAlgorithm

public ByUrlClusteringAlgorithm()

Method Detail

process

public void process()
             throws ProcessingException

Performs by URL clustering.

Specified by:

process in interface IProcessingComponent

Overrides:

process in class ProcessingComponentBase

Throws:

ProcessingException - when processing failed. If thrown, the IProcessingComponent.afterProcessing() method will be called and the component will be ready to accept further requests or to be disposed of. Finally, the exception will be rethrown from the controller method that caused the component to perform processing.