@Override
    protected void epoch() {
        for (Point point : points) {
            Map<Integer, Double> neuronIdWithDistanceMap = new HashMap<>();
            double distance;
            for (int i = 0; i < neurons.size(); i++) {
                distance = point.calculateDistance(neurons.get(i));
                neuronIdWithDistanceMap.put(i, distance);
            }

            List<Integer> sortedNeuronsId = neuronIdWithDistanceMap.entrySet().stream()
                    .sorted((Map.Entry.comparingByValue()))
                    .map(Map.Entry::getKey)
                    .collect(Collectors.toList());

            int neuronOrder = 1;
            for (Integer neuronId : sortedNeuronsId) {
                neurons.get(neuronId).moveCloser(point, 0.01 / Math.pow(neuronOrder, 3));
                neuronOrder++;
            }
        }
    }