VAGUE: a user interface to relational databases that permits vague queries
ACM Transactions on Information Systems (TOIS)
XIRQL: a query language for information retrieval in XML documents
Proceedings of the 24th annual international ACM SIGIR conference on Research and development in information retrieval
Querying and ranking XML documents
Journal of the American Society for Information Science and Technology - XML
An Information-Theoretic Definition of Similarity
ICML '98 Proceedings of the Fifteenth International Conference on Machine Learning
Comparing Hierarchical Data in External Memory
VLDB '99 Proceedings of the 25th International Conference on Very Large Data Bases
XRANK: ranked keyword search over XML documents
Proceedings of the 2003 ACM SIGMOD international conference on Management of data
Verbs semantics and lexical selection
ACL '94 Proceedings of the 32nd annual meeting on Association for Computational Linguistics
FleXPath: flexible structure and full-text querying for XML
SIGMOD '04 Proceedings of the 2004 ACM SIGMOD international conference on Management of data
Semantic retrieval of multimedia data
Proceedings of the 2nd ACM international workshop on Multimedia databases
Adaptive Processing of Top-k Queries in XML
ICDE '05 Proceedings of the 21st International Conference on Data Engineering
Algorithmic detection of semantic similarity
WWW '05 Proceedings of the 14th international conference on World Wide Web
A methodology for clustering XML documents by structure
Information Systems
An Approach for Geospatial Data Management for Efficient Web Retrieval
CIT '06 Proceedings of the Sixth IEEE International Conference on Computer and Information Technology
Storing and querying GML in object-relational databases
GIS '06 Proceedings of the 14th annual ACM international symposium on Advances in geographic information systems
Geographical information retrieval
International Journal of Geographical Information Science
Retrieving Geospatial Information into a Web-Mapping Application Using Geospatial Ontologies
KES-AMSTA '07 Proceedings of the 1st KES International Symposium on Agent and Multi-Agent Systems: Technologies and Applications
Extensible User-Based XML Grammar Matching
ER '09 Proceedings of the 28th International Conference on Conceptual Modeling
Comparing rankings of search results on the Web
Information Processing and Management: an International Journal - Special issue: Infometrics
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GML is emerging as the new standard for representing geographic information in GISs on the Web, allowing the encoding of structurally and semantically rich geographic data in self describing XML-based geographic entities. In this study, we address the problem of approximate querying and ranked results for GML data and provide a method for GML query evaluation. Our method consists of two main contributions. First, we propose a tree model for representing GML queries and data collections. Then, we introduce a GML retrieval method based on the concept of tree edit distance as an efficient means for comparing semi-structured data. Our approach allows the evaluation of both structural and semantic similarities in GML data, enabling the user to tune the querying process according to her needs. The user can also choose to perform either template querying, taking into account all elements in the query and data trees, or minimal constraint querying, considering only those elements required by the query (disregarding additional data elements), in the similarity evaluation process. An experimental prototype was implemented to test and validate our method. Results are promising.