Class DNN_angular1_neighbors

java.lang.Object

io.nosqlbench.virtdata.lib.vectors.dnn.angular.DNN_angular1_neighbors

All Implemented Interfaces:

IntFunction<int[]>

public class DNN_angular1_neighbors
extends Object
implements IntFunction<int[]>

Compute the indices of the neighbors of a given v using DNN mapping. To avoid ambiguity on equidistant neighbors, odd neighborhood sizes are preferred.

Constructor Summary

Constructors

Constructor	Description
DNN_angular1_neighbors(int k, int N, int modulus)

Method Summary

Modifier and Type	Method	Description
int[]	apply(int value)

Methods inherited from class java.lang.Object

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

Constructor Details

DNN_angular1_neighbors

public DNN_angular1_neighbors(int k,
 int N,
 int modulus)

Parameters:

k - The size of neighborhood

N - The number of total vectors, necessary for boundary conditions of defined vector

modulus - The modulus used during training of angular1 data; this corresponds to how periodically we cycle back to vectors with the same angle (hence have angular distance zero between them)

Method Details

apply

public int[] apply(int value)

Specified by:

apply in interface IntFunction<int[]>

Parameters:

value - the function argument, or the index of the query vector for the DNN addressing scheme

Returns:

A ranked neighborhood of vector indices, using the DNN addressing scheme