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cs.DB2025
Instance-Optimized String Fingerprints
Mihail Stoian, Johannes Thürauf, Andreas Zimmerer +2
Recent research found that cloud data warehouses are text-heavy. However, their capabilities for efficiently processing string columns remain limited, relying primarily on techniqu…
cs.DB2024
Lightweight Correlation-Aware Table Compression
Mihail Stoian, Alexander van Renen, Jan Kobiolka +3
The growing adoption of data lakes for managing relational data necessitates efficient, open storage formats that provide high scan performance and competitive compression ratios.…
cs.DB2024
Corra: Correlation-Aware Column Compression
Hanwen Liu, Mihail Stoian, Alexander van Renen +1
Column encoding schemes have witnessed a spark of interest with the rise of open storage formats (like Parquet) in data lakes in modern cloud deployments. This is not surprising --…