Growing Neural Gas algorithm from "A Growing Neural Gas Network Learns Topoligies" by Fritzke B.
Example usage:
from GNG.neuralgas import GraphNeuralGas
from example.distributions import Box, Circle, TiltedCircle, HypPar #this is mimiking some data
NG = GraphNeuralGas(
distribution=HypPar(n=800),
growing_rate=100,
eps_b=0.2,
eps_n=0.006,
a_max=50,
beta=0.995,
alpha=0.5,
plot_rate=500,
figpath='./example/HypPar3d',
gas_d=3,
max_number=500,
min_number=50,
error_tolerance=1,
)
NG.evolve(steps=100000)
Examples
Circle
TwistedCircle3d
Surface3d