indexed segment 中文意思是什麼
indexed segment
解釋
索引段-
Tb _ ppf - index is able to support trajectory based queries about the historical information of moving objects. first, the historical trajectories of moving objects are indexed by tb - tree after trajectory splitting. a buffer containing the latest trajectory segment is maintained for each moving object to support trajectory splitting
在tb _ ppf - index中,移動對象歷史軌跡信息經過軌跡切分后利用tb - tree進行索引,在軌跡切分過程中為每一個移動對象維護一個緩沖區buffer以保存最近一段時間的部分軌跡。 -
The sequences are transformed to a relative sequence, in which all the segments are normalized by the previous segment. the relative sequences are categorized and indexed by suffix tree, and the result of the suffix tree search is the potential similar subsequences
通過將序列變換為相對序列,實現了對序列中任意位置、任意長度子序列的規范化;為了提高查詢效率,將相對序列的特徵向量進行離散化分類,並使用后綴樹進行索引。
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