【摘要】 通常在一般关系数据库中采用的哈希函数都是针对某一应用而设计的。在该应用中该函数也许是最优化的 ,但不能保证其适用于其他场合。提出一种基于学习的自适应哈希算法以及对该算法的改进。实验表明 ,该算法能够使数据分布达到最优化 ,显著地提高数据的存取和查询效率。更多还原

【Abstract】 Generally speaking hash function is designed for one application.It may be the optimistic for this application.But it could not warrant that it is suitable for any other applications.The paper presents an enumeration-based adaptive hash algorithm and its improved edition.The experiment indicates that this new function could optimize the data distribution in order to improve the efficiency of the data access and query dramatically.更多还原