ivory.ffg.data

Interface DocumentVector

All Superinterfaces:

Writable

All Known Implementing Classes:

DocumentVectorHashedArray, DocumentVectorMiniInvertedIndex, DocumentVectorPForDeltaArray, DocumentVectorVIntArray

public interface DocumentVector
extends Writable

Abstract document vector.

Author:

Nima Asadi

Method Summary

Methods

Modifier and Type	Method and Description
int[]	decompressDocument() Decompresses the document vector into a flat array representation
int[][]	decompressPositions(int[] terms) Decompresses/constructs positions.
int	getDocumentLength()
int[]	transformTerms(int[] terms) Transforms query terms

Methods inherited from interface org.apache.hadoop.io.Writable

readFields, write

Method Detail

decompressDocument

int[] decompressDocument()
                         throws IOException

Decompresses the document vector into a flat array representation

Returns:

Decompressed flat array representation of the document vector

Throws:

IOException

decompressPositions

int[][] decompressPositions(int[] terms)
                            throws IOException

Decompresses/constructs positions. This method applies the necessary transformation functions tot he input query terms.

Parameters:

terms - Query terms

Returns:

Position arrays for every term in the query

Throws:

IOException

getDocumentLength

int getDocumentLength()

Returns:

Length of this document

transformTerms

int[] transformTerms(int[] terms)

Transforms query terms

Parameters:

terms - Query terms

Returns:

Transformed query terms