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Hourglass: An Adaptive Range Filter with Lightweight Hybrid Encoding

Summary: Hourglass is an adaptive range filter that splits keys into semi-sorted cuckoo-filtered prefixes and hybrid-encoded suffixes to boost space efficiency and handle skew/adversarial queries. It adds fingerprint-updating adaptivity and correlation-aware space allocation, yielding 9.8–35.4× lower FPR. (summarized by gpt-5-mini on Feb 11 2026)

Paper ID
7516
Venue
SIGMOD
Year
2026
Pagerank
5.2634238e-05
Overall Rank
9,463 | 35.08%
DOI
10.1145/3749169

Incoming Non-self Citations Over Time

Authors

BibTeX Citation

@inproceedings{liu_sigmod26,
        title = {{Hourglass: An Adaptive Range Filter with Lightweight Hybrid Encoding}},
        author = {Liu, Feifan and Gu, Rong and Li, Meng and Dai, Haipeng and Wang, Baohan and Tao, Jie and Shen, Dian},
        series = {{SIGMOD} '26},
        booktitle = {Proceedings of the {ACM} {SIGMOD} International Conference on Management of Data},
        publisher = {Association for Computing Machinery},
        doi = {10.1145/3749169},
        url = {https://dl.acm.org/doi/10.1145/3749169},
        year = {2026}
}

Incoming Citations (Sorted by Pagerank)

Showing 1 of 1 citing papers.

Rank Citing Paper Year Venue Pagerank
10,225 Dynamic Flat Filter: A Unified Framework for Scalable and Stable Fingerprint-Based Filters 2026 SIGMOD 5.093636e-05
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Outgoing Citations (Sorted by Pagerank)

Showing 21 of 21 cited papers.

Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.

Rank Cited Paper Year Venue Pagerank
880 SuRF: Practical Range Query Filtering with Fast Succinct Tries 2018 SIGMOD 0.00013432693
1,126 Adaptive Range Filters for Cold Data: Avoiding Trips to Siberia 2013 VLDB 0.00012078607
1,389 Realtime Data Processing at Facebook 2016 SIGMOD 0.00010943767
2,043 A General-Purpose Counting Filter: Making Every Bit Count 2017 SIGMOD 9.2674387e-05
2,698 Rosetta: A Robust Space-Time Optimized Range Filter for Key-Value Stores 2020 SIGMOD 8.2450522e-05
2,919 SNARF: A Learning-Enhanced Range Filter 2022 VLDB 7.9628657e-05
3,802 Leaper: A Learned Prefetcher for Cache Invalidation in LSM-tree based Storage Engines 2020 VLDB 7.1115502e-05
4,119 Proteus: A Self-Designing Range Filter 2022 SIGMOD 6.8907395e-05
4,532 Stacked Filters: Learning to Filter by Structure 2021 VLDB 6.6436681e-05
4,664 GRF: A Global Range Filter for LSM-Trees with Shape Encoding 2024 SIGMOD 6.5787544e-05
4,779 LogKV: Exploiting Key-Value Stores for Event Log Processing 2013 CIDR 6.5125667e-05
4,841 Grafite: Taming Adversarial Queries with Optimal Range Filters 2024 SIGMOD 6.4831558e-05
5,102 Fast Range Query Processing with Strong Privacy Protection for Cloud Computing 2014 VLDB 6.3641935e-05
5,261 Oasis: An Optimal Disjoint Segmented Learned Range Filter 2024 VLDB 6.2955539e-05
6,416 Memento Filter: A Fast, Dynamic, and Robust Range Filter 2024 SIGMOD 5.8829474e-05
7,757 CAMAL: Optimizing LSM-trees via Active Learning 2024 SIGMOD 5.5508469e-05
8,156 How to Grow an LSM-tree? Towards Bridging the Gap Between Theory and Practice 2025 SIGMOD 5.4765648e-05
8,360 SA-LSM: Optimize Data Layout for LSM-tree Based Storage using Survival Analysis 2022 VLDB 5.4444442e-05
8,409 Time Series Representation for Visualization in Apache IoTDB 2024 SIGMOD 5.4311904e-05
8,892 Adaptive Quotient Filters 2024 SIGMOD 5.3505412e-05
10,682 VEGA: An Active-tuning Learned Index with Group-Wise Learning Granularity 2025 SIGMOD 5.093636e-05
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