DBScholar

Back to papers

Return of the Lernaean Hydra: Experimental Evaluation of Data Series Approximate Similarity Search

Summary: Taxonomy reconciling data-series and multidimensional-vector similarity, with indexing changes for approximate queries with guarantees. Study on synthetic/real data, in-memory and on-disk, showing data-series methods beat disk-based vector baselines and stay competitive in memory. (summarized by gpt-5-nano on Feb 09 2026)

Paper ID
ha803b3e619038378
Venue
VLDB
Year
2020
Pagerank
8.0861221e-05
Overall Rank
2,730 | 81.65%
DOI
10.14778/3368289.3368303

Incoming Non-self Citations Over Time

Authors

BibTeX Citation

@article{echihabi_vldb20,
        title = {{Return of the Lernaean Hydra: Experimental Evaluation of Data Series Approximate Similarity Search}},
        author = {Echihabi, Karima and Zoumpatianos, Kostas and Palpanas, Themis and Benbrahim, Houda},
        journal = {PVLDB},
        series = {{VLDB} '20},
        volume = {13},
        number = {3},
        pages = {402--419},
        doi = {10.14778/3368289.3368303},
        url = {https://doi.org/10.14778/3368289.3368303},
        year = {2020}
}

Incoming Citations (Sorted by Pagerank)

Showing 30 of 30 citing papers.

Rank Citing Paper Year Venue Pagerank
1,328 VHP: Approximate Nearest Neighbor Search via Virtual Hypersphere Partitioning 2020 VLDB 0.00011003106
1,684 HVS: Hierarchical Graph Structure Based on Voronoi Diagrams for Solving Approximate Nearest Neighbor Search 2022 VLDB 9.8801753e-05
1,897 iDEC: Indexable Distance Estimating Codes for Approximate Nearest Neighbor Search 2020 VLDB 9.4092345e-05
2,265 ELPIS: Graph-Based Similarity Search for Scalable Data Science 2023 VLDB 8.7238222e-05
2,375 Series2Graph: Graph-based Subsequence Anomaly Detection for Time Series 2020 VLDB 8.555841e-05
2,448 DeltaPQ: Lossless Product Quantization Code Compression for High Dimensional Similarity Search 2020 VLDB 8.4494625e-05
2,871 Graph-Based Vector Search: An Experimental Evaluation of the State-of-the-Art 2025 SIGMOD 7.9229231e-05
4,304 Data Series Progressive Similarity Search with Probabilistic Quality Guarantees 2020 SIGMOD 6.6771697e-05
4,598 Steiner-Hardness: A Query Hardness Measure for Graph-Based ANN Indexes 2024 VLDB 6.5086378e-05
5,313 Hercules Against Data Series Similarity Search 2022 VLDB 6.1846986e-05
5,527 DET-LSH: A Locality-Sensitive Hashing Scheme with Dynamic Encoding Tree for Approximate Nearest Neighbor Search 2024 VLDB 6.0936219e-05
6,181 High-Dimensional Vector Similarity Search: From Time Series to Deep Network Embeddings 2020 SIGMOD 5.8595125e-05
6,609 Dumpy: A Compact and Adaptive Index for Large Data Series Collections 2023 SIGMOD 5.7354155e-05
7,264 Subspace Collision: An Efficient and Accurate Framework for High-dimensional Approximate Nearest Neighbor Search 2025 SIGMOD 5.5703557e-05
7,305 RWalks: Random Walks as Attribute Diffusers for Filtered Vector Search 2025 SIGMOD 5.5586007e-05
7,641 A Structured Study of Multivariate Time-Series Distance Measures 2025 SIGMOD 5.4772833e-05
8,778 Accelerating Product Quantization Query Execution Runtime 2021 SIGMOD 5.2782701e-05
8,849 VStream: A Distributed Streaming Vector Search System 2025 VLDB 5.2646236e-05
9,136 DARTH: Declarative Recall Through Early Termination for Approximate Nearest Neighbor Search 2026 SIGMOD 5.2224279e-05
9,440 Odyssey: A Journey in the Land of Distributed Data Series Similarity Search 2023 VLDB 5.1771634e-05
9,563 LeaFi: Data Series Indexes on Steroids with Learned Filters 2025 SIGMOD 5.1571823e-05
9,660 dCAM: Dimension-wise Class Activation Map for Explaining Multivariate Data Series Classification 2022 SIGMOD 5.1453267e-05
10,121 DIDS: Double Indices and Double Summarizations for Fast Similarity Search 2024 VLDB 5.0771316e-05
10,409 An In-Depth Study of Filter-Agnostic Vector Search on a PostgreSQL Database System: [Experiments & Analysis] 2026 SIGMOD 4.9793485e-05
10,509 TaCo: Data-adaptive and Query-aware Subspace Collision for High-dimensional Approximate Nearest Neighbor Search 2026 SIGMOD 4.9793485e-05
10,900 ANNiE: A Learned Query Cost Estimator for Graph-Based Approximate Nearest Neighbor Search 2026 VLDB 4.9793485e-05
11,075 MS-Index: Fast Top-k Subsequence Search for Multivariate Time Series under Euclidean Distance 2026 VLDB 4.9793485e-05
11,457 Representative Time Series Discovery for Data Exploration 2025 VLDB 4.9793485e-05
11,634 DeepSketch: A Query Sketching Interface for Deep Time Series Similarity Search 2024 VLDB 4.9793485e-05
11,749 Accelerating Similarity Search for Elastic Measures: A Study and New Generalization of Lower Bounding Distances 2023 VLDB 4.9793485e-05
Previous Page 1 / 1 Next

Outgoing Citations (Sorted by Pagerank)

Showing 14 of 14 cited papers.

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

Rank Cited Paper Year Venue Pagerank
4 The R*-tree: An Efficient and Robust Access Method for Points and Rectangles 1990 SIGMOD 0.0011405675
42 Fast Subsequence Matching in Time-Series Databases 1994 SIGMOD 0.00045773967
56 M-tree: An Efficient Access Method for Similarity Search in Metric Spaces 1997 VLDB 0.00040370171
74 Fast Approximate Nearest Neighbor Search With The Navigating Spreading-out Graph 2019 VLDB 0.00037091678
90 The X-tree: An Index Structure for High-Dimensional Data 1996 VLDB 0.00034860244
193 Locally Adaptive Dimensionality Reduction for Indexing Large Time Series Databases 2001 SIGMOD 0.00025648171
650 HD-Index: Pushing the Scalability-Accuracy Boundary for Approximate kNN Search in High-Dimensional Spaces 2018 VLDB 0.00015149775
886 The Pyramid-Technique: Towards Breaking the Curse of Dimensionality 1998 SIGMOD 0.0001325914
915 Querying and Mining of Time Series Data: Experimental Comparison of Representations and Distance Measures 2008 VLDB 0.00013099703
1,157 A Cost Model For Nearest Neighbor Search in High-Dimensional Data Space 1997 PODS 0.00011774968
2,079 A Cost Model for Similarity Queries in Metric Spaces 1998 PODS 9.0775779e-05
2,872 The Lernaean Hydra of Data Series Similarity Search: An Experimental Evaluation of the State of the Art 2019 VLDB 7.9228762e-05
5,275 Top-k Nearest Neighbor Search In Uncertain Data Series 2015 VLDB 6.2005202e-05
7,754 Uncertain Time-Series Similarity: Return to the Basics 2012 VLDB 5.4592892e-05
Previous Page 1 / 1 Next

Semantically Similar Papers

# Overall Rank Paper Year Venue
1 829 Similarity-Based Queries for Time Series Data 1997 SIGMOD
2 6,181 High-Dimensional Vector Similarity Search: From Time Series to Deep Network Embeddings 2020 SIGMOD
3 6,890 On Efficiently Searching Trajectories and Archival Data for Historical Similarities 2008 VLDB
4 10,121 DIDS: Double Indices and Double Summarizations for Fast Similarity Search 2024 VLDB
5 45 A Quantitative Analysis and Performance Study for Similarity-Search Methods in High-Dimensional Spaces 1998 VLDB
6 20 Similarity Search in High Dimensions via Hashing 1999 VLDB
7 4,304 Data Series Progressive Similarity Search with Probabilistic Quality Guarantees 2020 SIGMOD
8 3,513 Scalable, Variable-Length Similarity Search in Data Series: The ULISSE Approach 2018 VLDB
9 5,313 Hercules Against Data Series Similarity Search 2022 VLDB
10 2,872 The Lernaean Hydra of Data Series Similarity Search: An Experimental Evaluation of the State of the Art 2019 VLDB