Managing gigabytes (2nd ed.): compressing and indexing documents and images
Managing gigabytes (2nd ed.): compressing and indexing documents and images
A guide to data compression methods
A guide to data compression methods
Orchestrating a mixed reality game 'on the ground'
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Location-Based mobile querying in peer-to-peer networks
OTM'05 Proceedings of the 2005 OTM Confederated international conference on On the Move to Meaningful Internet Systems
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In context-aware mobile systems, data on past user behaviour or use of a device can give critical information The scale of this data may be large, and it must be quickly searched and retrieved Compression is a powerful tool for both storing and indexing data For text documents powerful algorithms using structured storage achieve high compression and rapid search and retrieval Byte-stream techniques provide higher compression, but lack indexation and have slow retrieval. Location is a common form of context frequently used in research prototypes of tourist guide systems, location-aware searching and adaptive hypermedia In this paper, we present an exploration of record-based compression of Global Positioning System (GPS) data that reveals significant technical limitations on what can be achieved on mobile devices, and a discussion of the benefits of different compression techniques on GPS data.