Nearest Keyword Search in XML Documents

Summary: Introduces Nearest Keyword (NK) search on XML trees and an index that returns the nearest keyword node to a query node. Delivers logarithmic query time in the number of keyword-bearing nodes with linear space and fast construction, with experiments validating NK as a practical building block for XPath and keyword search. (summarized by gpt-5-nano on Feb 09 2026)

Paper ID: h3a81b5c63df9a36b
Venue: SIGMOD
Year: 2011
Pagerank: 5.5524474e-05
Overall Rank: 7,323 | 50.77%
DOI: 10.1145/1989323.1989385

Incoming Non-self Citations Over Time

Authors

1. Yufei Tao (Chinese University of Hong Kong)
2. Stavros Papadopoulos (Chinese University of Hong Kong)
3. Cheng Sheng (Chinese University of Hong Kong)
4. Kostas Stefanidis (Chinese University of Hong Kong)

BibTeX Citation

@inproceedings{tao_sigmod11,
        title = {{Nearest Keyword Search in XML Documents}},
        author = {Tao, Yufei and Papadopoulos, Stavros and Sheng, Cheng and Stefanidis, Kostas},
        series = {{SIGMOD} '11},
        booktitle = {Proceedings of the {ACM} {SIGMOD} International Conference on Management of Data},
        publisher = {Association for Computing Machinery},
        doi = {10.1145/1989323.1989385},
        url = {https://dl.acm.org/doi/10.1145/1989323.1989385},
        year = {2011}
}

Incoming Citations (Sorted by Pagerank)

Showing 3 of 3 citing papers.

Rank	Citing Paper	Year	Venue	Pagerank
5,703	Hub Labeling for Shortest Path Counting	2020	SIGMOD	6.0303375e-05
7,075	Exact Top-k Nearest Keyword Search in Large Networks	2015	SIGMOD	5.6064033e-05
8,662	Top-K Nearest Keyword Search on Large Graphs	2013	VLDB	5.2928638e-05

Outgoing Citations (Sorted by Pagerank)

Showing 19 of 19 cited papers.

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

Rank	Cited Paper	Year	Venue	Pagerank
81	XRANK: Ranked Keyword Search over XML Documents	2003	SIGMOD	0.00036346781
178	Holistic Twig Joins: Optimal XML Pattern Matching	2002	SIGMOD	0.00026628894
270	BLINKS: Ranked Keyword Searches on Graphs	2007	SIGMOD	0.00022599109
293	Bidirectional Expansion For Keyword Search on Graph Databases	2005	VLDB	0.00021943678
374	Storing and Querying Ordered XML Using a Relational Database System	2002	SIGMOD	0.00019707844
410	XSEarch: A Semantic Search Engine for XML	2003	VLDB	0.00018778082
447	Scalable Network Distance Browsing in Spatial Databases	2008	SIGMOD	0.00018159715
453	Stack-based Algorithms for Pattern Matching on DAGs	2005	VLDB	0.00017972038
677	Voronoi-Based K Nearest Neighbor Search for Spatial Network Databases	2004	VLDB	0.00014843441
825	Efficient Keyword Search for Smallest LCAs in XML Databases	2005	SIGMOD	0.00013643331
1,445	Finding and Approximating Top-k Answers in Keyword Proximity Search	2006	PODS	0.0001063035
2,046	On the Integration of Structure Indexes and Inverted Lists	2004	SIGMOD	9.1269888e-05
2,262	Identifying Meaningful Return Information for XML Keyword Search	2007	SIGMOD	8.7333724e-05
2,746	Holistic Twig Joins on Indexed XML Documents	2003	VLDB	8.0626049e-05
4,156	Twig2Stack: Bottom-up Processing of Generalized-Tree-Pattern Queries over XML Documents	2006	VLDB	6.774434e-05
4,200	On Boosting Holism in XML Twig Pattern Matching Using Structural Indexing Techniques	2005	SIGMOD	6.7395481e-05
4,383	From Region Encoding To Extended Dewey: On Efficient Processing of XML Twig Pattern Matching	2005	VLDB	6.6261511e-05
5,709	BLAS : An Efficient XPath Processing System	2004	SIGMOD	6.0242536e-05
9,901	Fast Optimal Twig Joins	2010	VLDB	5.1115496e-05

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#	Overall Rank	Paper	Year	Venue
1	13,001	An Algebraic Query Model for Effective and Efficient Retrieval of XML Fragments	2006	VLDB
2	4,504	Reasoning and Identifying Relevant Matches for XML Keyword Search	2008	VLDB
3	351	Indexing and Querying XML Data for Regular Path Expressions	2001	VLDB
4	8,662	Top-K Nearest Keyword Search on Large Graphs	2013	VLDB
5	303	Proximity Search in Databases	1998	VLDB
6	6,273	Flexible and Efficient XML Search with Complex Full-Text Predicates	2006	SIGMOD
7	8,501	Efficient Keyword Search over Virtual XML Views	2007	VLDB
8	1,445	Finding and Approximating Top-k Answers in Keyword Proximity Search	2006	PODS
9	825	Efficient Keyword Search for Smallest LCAs in XML Databases	2005	SIGMOD
10	7,934	A System for Keyword Proximity Search on XML Databases	2003	VLDB