Package org.terrier.structures

Class PropertiesIndex.UpdatingCollectionStatistics

java.lang.Object

org.terrier.structures.CollectionStatistics

org.terrier.structures.PropertiesIndex.UpdatingCollectionStatistics

All Implemented Interfaces:

java.io.Serializable, org.apache.hadoop.io.Writable

Enclosing class:

PropertiesIndex

protected class PropertiesIndex.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, fieldNames, fieldTokens, hasPositions, numberOfDocuments, numberOfFields, numberOfPointers, numberOfTokens, numberOfUniqueTerms

Constructor Summary

Constructors

Constructor	Description
UpdatingCollectionStatistics(Index index)

Method Summary

Modifier and Type	Method	Description
double	getAverageDocumentLength()	Returns the documents' average length.
int	getNumberOfDocuments()	Returns the total number of documents in the collection.
long	getNumberOfPointers()	Deprecated.
long	getNumberOfPostings()	Returns the total number of postings 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.
boolean	hasPositions()	Returns true if the inverted index will have position informat

Methods inherited from class org.terrier.structures.CollectionStatistics

addStatistics, getAverageFieldLengths, getFieldNames, getFieldTokens, getNumberOfFields, readFields, readFieldsV5, recalculateAverageLengths, toString, write

Methods inherited from class java.lang.Object

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

Constructor Detail

UpdatingCollectionStatistics

public 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.

getNumberOfPostings

public long getNumberOfPostings()

Description copied from class: CollectionStatistics

Returns the total number of postings in the collection.

Overrides:

getNumberOfPostings in class CollectionStatistics

Returns:

the total number of postings in the collection.

getNumberOfPointers

@Deprecated
public long getNumberOfPointers()

Deprecated.

Description copied from class: CollectionStatistics

Returns the total number of postings in the collection.

Overrides:

getNumberOfPointers in class CollectionStatistics

Returns:

the total number of postings 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.

hasPositions

public boolean hasPositions()

Description copied from class: CollectionStatistics

Returns true if the inverted index will have position informat

Overrides:

hasPositions in class CollectionStatistics