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Count-Min Sketch with Conservative Updates: Worst-Case Analysis

Count-Min Sketch with Conservative Updates: Worst-Case Analysis

Count-Min Sketch with Conservative Updates (CMS-CU) is a memory-efficient hash-based data structure used to estimate the occurrences of items within a data stream. CMS-CU stores $m$ counters and employs $d$ hash functions to map items to these counters. We first argue that the estimation error in CMS-CU is maximal when …