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 with the provided identifiers.
addItems(Map<String, List<Float>>) - Method in class com.spotify.voyager.jni.StringIndex
 
asBytes() - Method in class com.spotify.voyager.jni.Index
Returns the contents of this index as an array of bytes.

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.exception - package com.spotify.voyager.jni.exception
 
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.
getMaxElements() - Method in class com.spotify.voyager.jni.StringIndex
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.
getNumElements() - Method in class com.spotify.voyager.jni.StringIndex
 
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.
getVector(String) - Method in class com.spotify.voyager.jni.StringIndex
 
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
 
RecallException - Exception in com.spotify.voyager.jni.exception
An exception indicating that the desired recall of a query cannot be achieved
RecallException(String) - Constructor for exception com.spotify.voyager.jni.exception.RecallException
Constructs a new RecallException with the specified detail message.
RecallException(String, Throwable) - Constructor for exception com.spotify.voyager.jni.exception.RecallException
Constructs a new RecallException with the specified detail message and cause.
resizeIndex(long) - Method in class com.spotify.voyager.jni.Index
Change the maximum number of elements currently storable by this Index.
resizeIndex(long) - Method in class com.spotify.voyager.jni.StringIndex
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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All Classes and Interfaces|All Packages|Serialized Form