一种基于演化代价约束的本体演化方法

针对本体演化方法提出粒度最小的演化基本操作,即附加演化元操作并引入了演化代价的概念;根据实体对本体影响内容的不同将其分类进行量化分析,实现了演化代价的计算方法;为减少本体演化中的演化代价,适应复杂的本体演化环境,给出一组演化操作策略集,以简化演化过程.实验结果表明,该COST启发式算法可以降低演化代价,有效减少了搜索空间并加速了演化过程.

An Ontology Evolution Approach Based on Evolution Cost Constrain

The authors presented two concepts additional atomy change and the cost of ontology evolution, classified the ontology entities based on their influence on different functions and services, and derived the formula for calculating the cost of evolution via quantitative analysis on the influence. In order to reduce the cost of ontology evolution and to adapt the complicate environment for ontology evolution, a group of evolution operation strategies were given. Finally the COST algorithm was put forward to decrease the cost and to limit the search space so as to accelerate evolution process.