001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 018package org.apache.commons.math3.ml.neuralnet; 019 020/** 021 * Defines neighbourhood types. 022 * 023 * @since 3.3 024 */ 025public enum SquareNeighbourhood { 026 /** 027 * <a href="http://en.wikipedia.org/wiki/Von_Neumann_neighborhood" 028 * Von Neumann neighbourhood</a>: in two dimensions, each (internal) 029 * neuron has four neighbours. 030 */ 031 VON_NEUMANN, 032 /** 033 * <a href="http://en.wikipedia.org/wiki/Moore_neighborhood" 034 * Moore neighbourhood</a>: in two dimensions, each (internal) 035 * neuron has eight neighbours. 036 */ 037 MOORE, 038}