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UNIFY: Unified Index for Range Filtered Approximate Nearest Neighbors Search

Summary: UNIFY provides one proximity-graph index for pre-, post-, and hybrid range-filtered ANNS, avoiding query-range-specific indexes. Its SIG/HSIG segmentation guarantees reconstructible subgraphs and logarithmic hybrid filtering via hierarchical HNSW-style structure. (summarized by gpt-5.6-luna on Jul 24 2026)

Paper ID
hdcafca954d6301e5
Venue
VLDB
Year
2025
Pagerank
6.6457039e-05
Overall Rank
4,347 | 70.79%
DOI
10.14778/3717755.3717770
PDF
Download (CC BY-NC-ND 4.0)

Incoming Non-self Citations Over Time

Authors

BibTeX Citation

@article{liang_vldb25,
        title = {{UNIFY: Unified Index for Range Filtered Approximate Nearest Neighbors Search}},
        author = {Liang, Anqi and Zhang, Pengcheng and Yao, Bin and Chen, Zhongpu and Song, Yitong and Cheng, Guangxu},
        journal = {PVLDB},
        series = {{VLDB} '25},
        volume = {18},
        number = {4},
        pages = {1118--1130},
        doi = {10.14778/3717755.3717770},
        url = {https://doi.org/10.14778/3717755.3717770},
        year = {2025}
}

Incoming Citations (Sorted by Pagerank)

Showing 15 of 15 citing papers.

Rank Citing Paper Year Venue Pagerank
8,265 Attribute Filtering in Approximate Nearest Neighbor Search: An In-depth Experimental Study 2026 SIGMOD 5.3639904e-05
10,168 GPS: Revisiting the Data Layout for Disk-based High-Dimensional Vector Search 2026 SIGMOD 5.0658661e-05
10,332 WoW: A Window-to-Window Incremental Index for Range-Filtering Approximate Nearest Neighbor Search 2026 SIGMOD 5.0322912e-05
10,421 An In-Depth Study of Filter-Agnostic Vector Search on a PostgreSQL Database System: [Experiments & Analysis] 2026 SIGMOD 4.9769913e-05
10,429 Balancing Global and Local: Representative Sampling for Large-Scale Vector Data 2026 SIGMOD 4.9769913e-05
10,468 FAVOR: Efficient Filter-Agnostic Vector ANNS Based on Selectivity-Aware Exclusion Distances 2026 SIGMOD 4.9769913e-05
10,527 VecBench: A Controllable Benchmark for Filtered Vector Search: [Experiments & Analysis] 2026 SIGMOD 4.9769913e-05
10,558 Beyond Vector Search: Querying With and Without Predicates 2026 SIGMOD 4.9769913e-05
10,763 An Experimental Evaluation of Hybrid Querying on Vectors 2026 VLDB 4.9769913e-05
10,779 Harmonizing Efficiency and Accuracy in Filtered Vector Search 2026 VLDB 4.9769913e-05
10,839 RNSG: A Range-Aware Graph Index for Efficient Range-Filtered Approximate Nearest Neighbor Search 2026 VLDB 4.9769913e-05
10,860 GAS: A Lightweight Framework for Filtered Search over Wide-table Vectors 2026 VLDB 4.9769913e-05
10,897 CGIF: Combining Proximity Graphs and Inverted Files for Efficient Filtered Vector Search over Arbitrary Predicates 2026 VLDB 4.9769913e-05
10,919 TEngineDB-V: An OLAP-Native Vector Search System for Large-k Workloads at Tencent 2026 VLDB 4.9769913e-05
11,037 Advances of Query Processing in Vector Databases 2026 VLDB 4.9769913e-05
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Outgoing Citations (Sorted by Pagerank)

Showing 16 of 16 cited papers.

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

Rank Cited Paper Year Venue Pagerank
2 R-Trees: A Dynamic Index Structure For Spatial Searching 1984 SIGMOD 0.0019923528
36 Accurate Estimation Of The Number Of Tuples Satisfying A Condition 1984 SIGMOD 0.00047864281
74 Fast Approximate Nearest Neighbor Search With The Navigating Spreading-out Graph 2019 VLDB 0.00037145866
189 Milvus: A Purpose-Built Vector Data Management System 2021 SIGMOD 0.0002585319
265 A Class of Data Structures for Associative Searching 1984 PODS 0.00022748432
297 Query-Aware Locality-Sensitive Hashing for Approximate Nearest Neighbor Search 2016 VLDB 0.00021849337
339 AnalyticDB-V: A Hybrid Analytical Engine Towards Query Fusion for Structured and Unstructured Data 2020 VLDB 0.00020561716
344 A Comprehensive Survey and Experimental Comparison of Graph-Based Approximate Nearest Neighbor Search 2021 VLDB 0.00020455839
648 HD-Index: Pushing the Scalability-Accuracy Boundary for Approximate kNN Search in High-Dimensional Spaces 2018 VLDB 0.00015156941
712 Cache locality is not enough: High-Performance Nearest Neighbor Search with Product Quantization Fast Scan 2016 VLDB 0.00014593534
909 PASE: PostgreSQL Ultra-High-Dimensional Approximate Nearest Neighbor Search Extension 2020 SIGMOD 0.0001312576
1,481 PM-LSH: A Fast and Accurate LSH Framework for High-Dimensional Approximate NN Search 2020 VLDB 0.00010535847
1,537 Cardinality Estimation: An Experimental Survey 2018 VLDB 0.00010324934
1,958 SeRF: Segment Graph for Range-Filtering Approximate Nearest Neighbor Search 2024 SIGMOD 9.3118048e-05
3,232 Similarity Query Processing for High-Dimensional Data 2020 VLDB 7.5029541e-05
5,903 ARKGraph: All-Range Approximate K-Nearest-Neighbor Graph 2023 VLDB 5.9512758e-05
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2 10,332 WoW: A Window-to-Window Incremental Index for Range-Filtering Approximate Nearest Neighbor Search 2026 SIGMOD
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