default_ref_pos: Generate Default Reference Locations

In jason-morgan/dynnet: Latent Space Models for Static and Dynamic Networks

Description

Create random default reference node locations on a k-dimensional unit hypersphere.

Usage

default_ref_pos(k)

Arguments

k	Positive integer indicating the dimensions of the latent social space.

Details

Create random default reference node locations on a k-dimensional unit hypersphere. The minimum distance between any two nodes is guaranteed to be greater than sqrt(2) / scale where scale = k-1 when k > 2. In 2 dimensions, nodes will never be located within the same quadrant. scale is used for larger dimensions to greatly reduce reference position generation time (using sqrt(2) meant that many sets of reference positions were being rejected).

Value

An (k+1)-by-k numeric matrix of latent locations on the k-dimensional unit hypersphere.

Author(s)

Jason W. Morgan [e-mail]

jason-morgan/dynnet documentation built on May 18, 2019, 4:53 p.m.