hierarchical indexed direct access method 分层她直接存取法
the hierarchical indexing model of process plans reuse base is composed of type level and case level, and the encoding rule and sorting method for type level are provided 提出了“类型层+实例层”的层次型可重用工艺库索引模型,建立了类型层成组分类编码结构,给出了成组分类方法。
based on the vq-based indexing method, a hierarchical indexing scheme is proposed for higher performance . this approach integrates vq-based indexing structures with approximate nn searches and performs probabilistic approximate nn searches on approximate vectors 该方法在矢量量化索引机制的基础上使用了概率近似最近邻的方式进行检索,这种两种索引机制相结合的方法取得了比单独的索引机制更好的性能。
experiments show the presented hierarchical indexing scheme outperforms the original vq-based indexing method and probabilistic approximate nn searches . both presented approaches support quadratic-form distance metric and can integrate with relevance feedback techniques for practical large-scale image retrieval systems 通过对二次型距离的推广,提出了二分量判别函数,使用非线性的方法抽取反映散度判据和距离判据的特征,具有比线性方法具有更高的检索精度。