Index

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A

addItem(float[]) - Method in class com.spotify.voyager.jni.Index

Add an item (a vector) to this Index.

addItem(float[], long) - Method in class com.spotify.voyager.jni.Index

Add an item (a vector) to this Index with the provided identifier.

addItem(String, float[]) - Method in class com.spotify.voyager.jni.StringIndex

addItem(String, List<Float>) - Method in class com.spotify.voyager.jni.StringIndex

addItems(float[][], int) - Method in class com.spotify.voyager.jni.Index

Add multiple items (vectors) to this Index.

addItems(float[][], long[], int) - Method in class com.spotify.voyager.jni.Index

Add multiple items (vectors) to this Index.

addItems(Map<String, List<Float>>) - Method in class com.spotify.voyager.jni.StringIndex

C

close() - Method in class com.spotify.voyager.jni.Index

Close this Index and release any memory held by it.

close() - Method in class com.spotify.voyager.jni.StringIndex

com.spotify.voyager - package com.spotify.voyager

Voyager is a Java and Python library that provides approximate nearest-neighbor search of vector data.

com.spotify.voyager.jni - package com.spotify.voyager.jni

Java Native Interface (JNI) bindings to expose functionality from Voyager's C++ code into Java.

com.spotify.voyager.jni.utils - package com.spotify.voyager.jni.utils

Cosine - Enum constant in enum com.spotify.voyager.jni.Index.SpaceType

Cosine distance; i.e.

D

distances - Variable in class com.spotify.voyager.jni.Index.QueryResults

A list of distances from each item ID to the query vector for this query.

E

E4M3 - Enum constant in enum com.spotify.voyager.jni.Index.StorageDataType

A custom 8-bit floating point data type with range [-448, 448] and variable precision.

Euclidean - Enum constant in enum com.spotify.voyager.jni.Index.SpaceType

Euclidean distance, also known as L2 distance.

extractBinaries(String) - Static method in class com.spotify.voyager.jni.utils.JniLibExtractor

F

finalize() - Method in class com.spotify.voyager.jni.Index

Float32 - Enum constant in enum com.spotify.voyager.jni.Index.StorageDataType

A 32-bit floating point ("Float") data type.

Float8 - Enum constant in enum com.spotify.voyager.jni.Index.StorageDataType

An 8-bit floating point data type that expects all values to be on [-1, 1].

G

getDistance(int) - Method in class com.spotify.voyager.jni.StringIndex.QueryResults

getDistances() - Method in class com.spotify.voyager.jni.Index.QueryResults

Retrieve the list of distances between query vectors and item vectors for the results of this query.

getDistances() - Method in class com.spotify.voyager.jni.StringIndex.QueryResults

getEf() - Method in class com.spotify.voyager.jni.Index

Get the default EF ("query search depth") that will be uses when Index.query(float[], int) is called.

getEfConstruction() - Method in class com.spotify.voyager.jni.Index

Get the EF Construction value used when adding new elements to this Index.

getIDs() - Method in class com.spotify.voyager.jni.Index

Get the list of identifiers currently stored by this index.

getLabels() - Method in class com.spotify.voyager.jni.Index.QueryResults

Retrieve the list of item IDs ("labels") returned by this query.

getM() - Method in class com.spotify.voyager.jni.Index

Get the M value used when adding new elements to this Index.

getMaxElements() - Method in class com.spotify.voyager.jni.Index

Get the maximum number of elements currently storable by this Index.

getName(int) - Method in class com.spotify.voyager.jni.StringIndex.QueryResults

getNames() - Method in class com.spotify.voyager.jni.StringIndex.QueryResults

getNumDimensions() - Method in class com.spotify.voyager.jni.Index

Get the number of dimensions used in this Index.

getNumElements() - Method in class com.spotify.voyager.jni.Index

Get the number of elements currently in this Index.

getNumResults() - Method in class com.spotify.voyager.jni.StringIndex.QueryResults

getNumThreads() - Method in class com.spotify.voyager.jni.Index

Get the default number of threads used when adding multiple vectors in bulk oor when querying for multiple vectors simultaneously.

getSpace() - Method in class com.spotify.voyager.jni.Index

Get the Index.SpaceType that this Index uses to store and compare vectors.

getVector(long) - Method in class com.spotify.voyager.jni.Index

Get the vector for the provided identifier.

getVectors(long[]) - Method in class com.spotify.voyager.jni.Index

Get the vectors for a provided array of identifiers.

I

Index - Class in com.spotify.voyager.jni

A Voyager index, providing storage of floating-point vectors and the ability to efficiently search among those vectors.

Index(Index.SpaceType, int) - Constructor for class com.spotify.voyager.jni.Index

Create a new Index that uses the given Index.SpaceType to store and compare numDimensions-dimensional vectors.

Index(Index.SpaceType, int, long, long, long, long, Index.StorageDataType) - Constructor for class com.spotify.voyager.jni.Index

Create a new Index that uses the given Index.SpaceType to store and compare numDimensions-dimensional vectors.

Index.QueryResults - Class in com.spotify.voyager.jni

A container for query results, returned by Index.

Index.SpaceType - Enum in com.spotify.voyager.jni

The space, also known as distance metric, to use when searching.

Index.StorageDataType - Enum in com.spotify.voyager.jni

The datatype used to use when storing vectors on disk.

InnerProduct - Enum constant in enum com.spotify.voyager.jni.Index.SpaceType

Inner (dot) product.

J

JniLibExtractor - Class in com.spotify.voyager.jni.utils

JniLibExtractor() - Constructor for class com.spotify.voyager.jni.utils.JniLibExtractor

L

labels - Variable in class com.spotify.voyager.jni.Index.QueryResults

A list of item IDs ("labels").

load(InputStream) - Static method in class com.spotify.voyager.jni.Index

Interpret the contents of a java.io.InputStream as the contents of a Voyager index file and create a new Index initialized with the data provided by that stream.

load(InputStream, Index.SpaceType, int, Index.StorageDataType) - Static method in class com.spotify.voyager.jni.Index

Interpret the contents of a java.io.InputStream as the contents of a Voyager index file and create a new Index initialized with the data provided by that stream.

load(InputStream, InputStream) - Static method in class com.spotify.voyager.jni.StringIndex

Load a previously constructed index from the provided input stream.

load(InputStream, InputStream, Index.SpaceType, int, Index.StorageDataType) - Static method in class com.spotify.voyager.jni.StringIndex

Load a previously constructed index from the provided input streams.

load(String) - Static method in class com.spotify.voyager.jni.Index

Load a Voyager index file and create a new Index initialized with the data in that file.

load(String, Index.SpaceType, int, Index.StorageDataType) - Static method in class com.spotify.voyager.jni.Index

Load a Voyager index file and create a new Index initialized with the data in that file.

load(String, String) - Static method in class com.spotify.voyager.jni.StringIndex

Load a previously constructed index from the provided file location.

load(String, String, Index.SpaceType, int, Index.StorageDataType) - Static method in class com.spotify.voyager.jni.StringIndex

Load a previously constructed index from the provided file location.

M

markDeleted(long) - Method in class com.spotify.voyager.jni.Index

Mark an element of the index as deleted.

Q

query(float[][], int, int) - Method in class com.spotify.voyager.jni.Index

Query this Index for approximate nearest neighbors of multiple query vectors.

query(float[][], int, int, int) - Method in class com.spotify.voyager.jni.StringIndex

Query for multiple target vectors in parallel.

query(float[][], int, int, long) - Method in class com.spotify.voyager.jni.Index

Query this Index for approximate nearest neighbors of multiple query vectors.

query(float[], int) - Method in class com.spotify.voyager.jni.Index

Query this Index for approximate nearest neighbors of a single query vector.

query(float[], int, int) - Method in class com.spotify.voyager.jni.StringIndex

Find the nearest neighbors of the provided embedding.

query(float[], int, long) - Method in class com.spotify.voyager.jni.Index

Query this Index for approximate nearest neighbors of a single query vector.

QueryResults(long[], float[]) - Constructor for class com.spotify.voyager.jni.Index.QueryResults

Instantiates a new QueryResults object, provided two identical-length arrays of labels and their corresponding distances.

QueryResults(String[], float[]) - Constructor for class com.spotify.voyager.jni.StringIndex.QueryResults

R

readStringList(InputStream) - Static method in class com.spotify.voyager.jni.utils.TinyJson

resizeIndex(long) - Method in class com.spotify.voyager.jni.Index

Change the maximum number of elements currently storable by this Index.

S

saveIndex(OutputStream) - Method in class com.spotify.voyager.jni.Index

Save this Index to the provided output stream.

saveIndex(OutputStream, OutputStream) - Method in class com.spotify.voyager.jni.StringIndex

Save the underlying HNSW index and JSON encoded names list to the provided output streams

saveIndex(String) - Method in class com.spotify.voyager.jni.Index

Save this Index to a file at the provided filename.

saveIndex(String) - Method in class com.spotify.voyager.jni.StringIndex

Save the underlying index and JSON encoded name list to the provided output directory

saveIndex(String, String, String) - Method in class com.spotify.voyager.jni.StringIndex

setEf(long) - Method in class com.spotify.voyager.jni.Index

Set the default EF ("query search depth") to use when Index.query(float[], int) is called.

setNumThreads(int) - Method in class com.spotify.voyager.jni.Index

Set the default number of threads to use when adding multiple vectors in bulk, or when querying for multiple vectors simultaneously.

StringIndex - Class in com.spotify.voyager.jni

Wrapper around com.spotify.voyager.jni.Index with a simplified interface which maps the index ID to a provided String.

StringIndex(Index.SpaceType, int) - Constructor for class com.spotify.voyager.jni.StringIndex

Instantiate a new empty index with the specified space type and dimensionality

StringIndex(Index.SpaceType, int, long, long, long, long, Index.StorageDataType) - Constructor for class com.spotify.voyager.jni.StringIndex

Instantiate an empty index with the specified index parameters

StringIndex.QueryResults - Class in com.spotify.voyager.jni

A wrapper class for nearest neighbor query results.

T

TinyJson - Class in com.spotify.voyager.jni.utils

A dependency-free, super tiny JSON serde class that only supports reading and writing lists of strings.

TinyJson() - Constructor for class com.spotify.voyager.jni.utils.TinyJson

toString() - Method in class com.spotify.voyager.jni.Index.QueryResults

toString() - Method in class com.spotify.voyager.jni.StringIndex.QueryResults

U

unmarkDeleted(long) - Method in class com.spotify.voyager.jni.Index

Un-mark an element of the index as deleted, making it available again.

V

valueOf(String) - Static method in enum com.spotify.voyager.jni.Index.SpaceType

Returns the enum constant of this type with the specified name.

valueOf(String) - Static method in enum com.spotify.voyager.jni.Index.StorageDataType

Returns the enum constant of this type with the specified name.

values() - Static method in enum com.spotify.voyager.jni.Index.SpaceType

Returns an array containing the constants of this enum type, in the order they are declared.

values() - Static method in enum com.spotify.voyager.jni.Index.StorageDataType

Returns an array containing the constants of this enum type, in the order they are declared.

W

writeStringList(Iterable<String>, OutputStream) - Static method in class com.spotify.voyager.jni.utils.TinyJson

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