Real-time cardinality estimator built for the Future of Database Programming Contest. Implements histogram-based methods, HyperLogLog, MCV tracking, and optimized data structures for high-performance. Achieved first place in the competition
database correlation histogram estimator hyperloglog intervals cardinality-estimation database-systems binary-structure data-skew-handling algorithms-optimization most-common-values
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Updated
Aug 29, 2026 - C++