org.terrier.structures

Class Index.UpdatingCollectionStatistics

java.lang.Object

org.terrier.structures.CollectionStatistics

org.terrier.structures.Index.UpdatingCollectionStatistics

All Implemented Interfaces:

Serializable, org.apache.hadoop.io.Writable

Enclosing class:

Index

protected class Index.UpdatingCollectionStatistics
extends CollectionStatistics

This collection statistics parses the associated index properties for each call. It doesnt support fields.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.terrier.structures.CollectionStatistics

averageDocumentLength, avgFieldLengths, fieldTokens, numberOfDocuments, numberOfFields, numberOfPointers, numberOfTokens, numberOfUniqueTerms

Constructor Summary

Constructors

Constructor and Description
Index.UpdatingCollectionStatistics(Index index)

Method Summary

Methods

Modifier and Type	Method and Description
double	getAverageDocumentLength() Returns the documents' average length.
int	getNumberOfDocuments() Returns the total number of documents in the collection.
long	getNumberOfPointers() Returns the total number of pointers in the collection.
long	getNumberOfTokens() Returns the total number of tokens in the collection.
int	getNumberOfUniqueTerms() Returns the total number of unique terms in the lexicon.

Methods inherited from class org.terrier.structures.CollectionStatistics

addStatistics, getAverageFieldLengths, getFieldTokens, getNumberOfFields, readFields, relcaluateAverageLengths, toString, write

Methods inherited from class java.lang.Object

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

Constructor Detail

Index.UpdatingCollectionStatistics

public Index.UpdatingCollectionStatistics(Index index)

Method Detail

getAverageDocumentLength

public double getAverageDocumentLength()

Description copied from class: CollectionStatistics

Returns the documents' average length.

Overrides:

getAverageDocumentLength in class CollectionStatistics

Returns:

the average length of the documents in the collection.

getNumberOfDocuments

public int getNumberOfDocuments()

Description copied from class: CollectionStatistics

Returns the total number of documents in the collection.

Overrides:

getNumberOfDocuments in class CollectionStatistics

Returns:

the total number of documents in the collection

getNumberOfPointers

public long getNumberOfPointers()

Description copied from class: CollectionStatistics

Returns the total number of pointers in the collection.

Overrides:

getNumberOfPointers in class CollectionStatistics

Returns:

the total number of pointers in the collection

getNumberOfTokens

public long getNumberOfTokens()

Description copied from class: CollectionStatistics

Returns the total number of tokens in the collection.

Overrides:

getNumberOfTokens in class CollectionStatistics

Returns:

the total number of tokens in the collection

getNumberOfUniqueTerms

public int getNumberOfUniqueTerms()

Description copied from class: CollectionStatistics

Returns the total number of unique terms in the lexicon.

Overrides:

getNumberOfUniqueTerms in class CollectionStatistics

Returns:

the total number of unique terms in the lexicon