XMill: an efficient compressor for XML data
SIGMOD '00 Proceedings of the 2000 ACM SIGMOD international conference on Management of data
WMS and GML based interoperable web mapping system
Proceedings of the 9th ACM international symposium on Advances in geographic information systems
A specification of a spatial query language over GML
Proceedings of the 9th ACM international symposium on Advances in geographic information systems
Data Compression: The Complete Reference
Data Compression: The Complete Reference
Analysis of different approaches for storing GML documents
Proceedings of the 10th ACM international symposium on Advances in geographic information systems
Vector map compression: a clustering approach
Proceedings of the 10th ACM international symposium on Advances in geographic information systems
XPRESS: a queriable compression for XML data
Proceedings of the 2003 ACM SIGMOD international conference on Management of data
Dictionary Design Algorithms for Vector Map Compression
DCC '02 Proceedings of the Data Compression Conference
Compressing XML with Multiplexed Hierarchical PPM Models
DCC '01 Proceedings of the Data Compression Conference
XGRIND: A Query-Friendly XML Compressor
ICDE '02 Proceedings of the 18th International Conference on Data Engineering
Comparative Analysis of XML Compression Technologies
World Wide Web
XQueC: pushing queries to compressed XML data
VLDB '03 Proceedings of the 29th international conference on Very large data bases - Volume 29
Distributed geo-referenced information accessing and integrating based on mobile agents and GML
WISEW'03 Proceedings of the Fourth international conference on Web information systems engineering workshops
A GML documents stream compressor
DASFAA'11 Proceedings of the 16th international conference on Database systems for advanced applications
A query-friendly compression for GML documents
DASFAA'11 Proceedings of the 16th international conference on Database systems for advanced applications
A spatial proximity based compression method for GML documents
WAIM'13 Proceedings of the 14th international conference on Web-Age Information Management
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As GML is becoming the de facto standard for geographic data storage, transmission and exchange, more and more geographic data exists in GML format. In applications, GML documents are usually very large in size because they contain a large number of verbose markup tags and a large amount of spatial coordinate data. In order to speedup data transmission and reduce network cost, it is essential to develop effective and efficient GML compression tools. Although GML is a special case of XML, current XML compressors are not effective if directly applied to GML, because these compressors have been designed for general XML data. In this paper, we propose GPress, a compressor for effectively compressing GML documents. To the best of our knowledge, GPress is the first compressor specifically for GML documents compression. GPress exploits the unique characteristics of GML documents to achieve good performance. Extensive experiments over real-world GML documents show that GPress evidently outperforms XMill (one of the best existing XML compressors) in compression ratio, while its compression efficiency is comparable to the existing XML compressors.