Broadcast disks: data management for asymmetric communication environments
SIGMOD '95 Proceedings of the 1995 ACM SIGMOD international conference on Management of data
Scheduling on-demand broadcasts: new metrics and algorithms
MobiCom '98 Proceedings of the 4th annual ACM/IEEE international conference on Mobile computing and networking
Covering indexes for branching path queries
Proceedings of the 2002 ACM SIGMOD international conference on Management of data
Data on Air: Organization and Access
IEEE Transactions on Knowledge and Data Engineering
DataGuides: Enabling Query Formulation and Optimization in Semistructured Databases
VLDB '97 Proceedings of the 23rd International Conference on Very Large Data Bases
A cost-efficient scheduling algorithm of on-demand broadcasts
Wireless Networks
Path sharing and predicate evaluation for high-performance XML filtering
ACM Transactions on Database Systems (TODS)
Efficient processing of XML path queries using the disk-based F&B Index
VLDB '05 Proceedings of the 31st international conference on Very large data bases
An indexing method for wireless broadcast XML data
Information Sciences: an International Journal
Efficient stream organization for wireless broadcasting of XML data
ASIAN'05 Proceedings of the 10th Asian Computing Science conference on Advances in computer science: data management on the web
An effective, efficient XML data broadcasting method in a mobile wireless network
DEXA'06 Proceedings of the 17th international conference on Database and Expert Systems Applications
Energy-conserving fragment methods for skewed XML data access in push-based broadcast
WAIM'11 Proceedings of the 12th international conference on Web-age information management
An automaton-based index scheme for on-demand XML data broadcast
DASFAA'12 Proceedings of the 17th international conference on Database Systems for Advanced Applications - Volume Part II
Effective scheduling algorithm for on-demand XML data broadcasts in wireless environments
ADC '11 Proceedings of the Twenty-Second Australasian Database Conference - Volume 115
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Data broadcast is an efficient way for information dissemination in wireless mobile environments, and on-demand XML data broadcast is one of the most important research issues in this area. Indexing XML data on wireless channel is critical for this issue since energy management is very important in wireless mobile environments. Previous works have focused on air index schemes for single path queries. In this paper, we propose a novel air index scheme that builds concise air indexes for twig queries in on-demand XML data broadcast. We adopt the Document Tree structure as the basic air index structure for twig queries and propose to prune redundant structures of the basic Document Tree indexes to reduce the energy consumption. Then we propose to combine all the pruned indexes into one which can eliminate structure redundancy among the indexes to further reduce the energy consumption. Our preliminary experiments show that our air index scheme is very effective and efficient, as it builds concise air indexes and supports twig queries without losing any precision.