/******************************************************************************* * Copyright (c) 2010 Haifeng Li * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. *******************************************************************************/ /** * A taxonomy is a tree of terms (concepts) where leaves * must be named but intermediary nodes can be anonymous. * Concept is a set of synonyms, i.e. group of words that are roughly * synonymous in a given context. * The distance between two concepts a and b is defined by the length of the * path from a to their lowest common ancestor and then to b. * * @author Haifeng Li */ package smile.taxonomy;