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VGRAM: Improving Performance of Approximate Queries on String Collections Using Variable-Length Grams

Summary: VGRAM selects variable-length grams to speed up approximate string queries. It derives query grams from selected grams and links gram-set similarity to edit distance, enabling adoption by algorithms with minimal changes; experiments show speedups. (summarized by gpt-5-nano on Feb 09 2026)

Paper ID
hc1f2388cecb58002
Venue
VLDB
Year
2007
Pagerank
0.00012208031
Overall Rank
1,062 | 92.87%
DOI
-

Incoming Non-self Citations Over Time

Authors

BibTeX Citation

@article{li_vldb07,
        title = {{VGRAM: Improving Performance of Approximate Queries on String Collections Using Variable-Length Grams}},
        author = {Li, Chen and Wang, Bin and Yang, Xiaochun},
        journal = {PVLDB},
        series = {{VLDB} '07},
        pages = {303--314},
        year = {2007}
}

Incoming Citations (Sorted by Pagerank)

Showing 28 of 28 citing papers.

Rank Citing Paper Year Venue Pagerank
534 On Active Learning of Record Matching Packages 2010 SIGMOD 0.00016799
885 Framework for Evaluating Clustering Algorithms in Duplicate Detection 2009 VLDB 0.00013254509
929 Ed-Join: An Efficient Algorithm for Similarity Joins With Edit Distance Constraints 2008 VLDB 0.00013014029
965 Can We Beat the Prefix Filtering? An Adaptive Framework for Similarity Join and Search 2012 SIGMOD 0.00012810695
2,147 Cost-Based Variable-Length-Gram Selection for String Collections to Support Approximate Queries Efficiently 2008 SIGMOD 8.9566452e-05
2,509 WHAM: A High-throughput Sequence Alignment Method 2011 SIGMOD 8.3675232e-05
3,256 Efficient Exact Edit Similarity Query Processing with the Asymmetric Signature Scheme 2011 SIGMOD 7.4855571e-05
3,512 Efficient Approximate Entity Extraction with Edit Distance Constraints 2009 SIGMOD 7.2405277e-05
3,563 Astrid: Accurate Selectivity Estimation for String Predicates using Deep Learning 2021 VLDB 7.2023194e-05
3,817 Trie-Join: Efficient Trie-based String Similarity Joins with Edit-Distance Constraints 2010 VLDB 7.0039415e-05
4,850 Probabilistic String Similarity Joins 2010 SIGMOD 6.3779476e-05
5,190 Fast Subtrajectory Similarity Search in Road Networks under Weighted Edit Distance Constraints 2020 VLDB 6.2341162e-05
5,449 Pigeonring: A Principle for Faster Thresholded Similarity Search 2019 VLDB 6.123954e-05
5,551 Faerie: Efficient Filtering Algorithms for Approximate Dictionary-based Entity Extraction 2011 SIGMOD 6.0852227e-05
5,797 Efficient Approximate Search on String Collections (Tutorial) 2009 VLDB 5.9898117e-05
6,309 Reference-Based Alignment in Large Sequence Databases 2009 VLDB 5.815405e-05
6,608 A Pivotal Prefix Based Filtering Algorithm for String Similarity Search 2014 SIGMOD 5.73402e-05
6,852 SigMatch: Fast and Scalable Multi-Pattern Matching 2010 VLDB 5.6631427e-05
6,968 Sampling Dirty Data for Matching Attributes 2010 SIGMOD 5.6296644e-05
7,007 A Generic Framework for Efficient and Effective Subsequence Retrieval 2012 VLDB 5.6207566e-05
7,032 Efficient Similarity Join and Search on Multi-Attribute Data 2015 SIGMOD 5.6147056e-05
7,846 Efficient Top-k Algorithms for Approximate Substring Matching 2013 SIGMOD 5.4400167e-05
9,136 Balance-Aware Distributed String Similarity-Based Query Processing System 2019 VLDB 5.2213971e-05
9,794 On-the-Fly Token Similarity Joins in Relational Databases 2014 SIGMOD 5.1248055e-05
10,303 Local Filtering: Improving the Performance of Approximate Queries on String Collections 2015 SIGMOD 5.0394806e-05
10,304 Efficient and Effective KNN Sequence Search with Approximate n-grams 2014 VLDB 5.0394806e-05
10,701 The Case For Language Model Approximated LIKE Predicate 2026 SIGMOD 4.9769913e-05
12,234 ZigZag: Supporting Similarity Queries on Vector Space Models 2018 SIGMOD 4.9769913e-05
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Outgoing Citations (Sorted by Pagerank)

Showing 8 of 8 cited papers.

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

Rank Cited Paper Year Venue Pagerank
108 Approximate String Joins in a Database (Almost) for Free 2001 VLDB 0.00033040246
161 Robust and Efficient Fuzzy Match for Online Data Cleaning 2003 SIGMOD 0.00027705594
162 Integration of Heterogeneous Databases Without Common Domains Using Queries Based on Textual Similarity 1998 SIGMOD 0.00027524669
201 Efficient set joins on similarity predicates 2004 SIGMOD 0.00025319937
262 Record Linkage: Similarity Measures and Algorithms 2006 SIGMOD 0.00022811258
1,163 Estimating Alphanumeric Selectivity in the Presence of Wildcards 1996 SIGMOD 0.0001174542
1,462 Substring Selectivity Estimation 1999 PODS 0.00010578962
2,316 n-Gram/2L: A Space and Time Efficient Two-Level n-Gram Inverted Index Structure 2005 VLDB 8.6509997e-05
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