hierarchical indexed direct access method 分層她直接存取法
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“類型層+實例層”的層次型可重用工藝庫索引模型,建立了類型層成組分類編碼結(jié)構,給出了成組分類方法。
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 該方法在矢量量化索引機制的基礎上使用了概率近似最近鄰的方式進行檢索,這種兩種索引機制相結(jié)合的方法取得了比單獨的索引機制更好的性能。
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 通過對二次型距離的推廣,提出了二分量判別函數(shù),使用非線性的方法抽取反映散度判據(jù)和距離判據(jù)的特征,具有比線性方法具有更高的檢索精度。