Correlation Joins over Time Series Data Streams Utilizing Complementary Dimension Reduction and Transformation
Summary: CorrJoin hybridizes PAA and SVD to compress time-series windows and enable bucketing-based coarse filtering for correlation joins over streams. A second Euclidean-distance filter prunes false positives before exact correlation, delivering up to 20× speedups over Quickjoin. (summarized by gpt-5-nano on Feb 09 2026)
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