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"""!
@brief Examples of usage and demonstration of abilities of Hysteresis Oscillatory Network.
@authors Andrei Novikov (pyclustering@yandex.ru)
@date 2014-2020
@copyright BSD-3-Clause
"""
from pyclustering.nnet.hysteresis import hysteresis_network, hysteresis_visualizer;
from pyclustering.nnet import *;
def template_dynamic(num_osc, own_weight = -3, neigh_weight = -1, initial_states = None, initial_outputs = None, steps = 1000, time = 10):
network = hysteresis_network(num_osc, own_weight, neigh_weight);
if (initial_states is not None):
network.states = initial_states;
if (initial_outputs is not None):
network.outputs = initial_outputs;
output_dynamic = network.simulate(steps, time);
hysteresis_visualizer.show_output_dynamic(output_dynamic);
ensembles = output_dynamic.allocate_sync_ensembles(tolerance = 0.5, threshold_steps = 5);
print("Allocated synchronous ensembles ( amout:", len(ensembles), "):", ensembles);
def one_oscillator_weight_2():
template_dynamic(1, -2);
def one_oscillator_weight_4():
template_dynamic(1, -4);
def two_oscillators_sync():
"Comment: Different initial state - state of sync. will be reached."
template_dynamic(2, -4, 1, [1, 0], [1, 1]);
def two_oscillators_desync():
"Note: if initial state is the same for both oscillators then desync. will not be exist. It is very important to set different values if desync. is required."
template_dynamic(2, -4, -1, [1, 0], [1, 1]);
def five_oscillators_positive_conn():
"Note: Oscillations are dead in this case (sync. should be in ideal case)"
template_dynamic(5, -4, 1, [1, 0.5, 0, -0.5, -1], [1, 1, 1, 1, 1]);
template_dynamic(5, -4, 1, [1, 0.8, 0.6, 0.4, 0.2], [-1, -1, -1, -1, -1]);
def five_oscillators_negative_conn():
"Comment: Full desync."
template_dynamic(5, -4, -1, [1, 0.5, 0, -0.5, -1], [1, 1, 1, 1, 1]);
one_oscillator_weight_2();
one_oscillator_weight_4();
two_oscillators_sync();
two_oscillators_desync();
five_oscillators_positive_conn();
five_oscillators_negative_conn();
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