Filters








95 Hits in 2.2 sec

Semantic Caching for Multiresolution Spatial Query Processing in Mobile Environments [chapter]

Sai Sun, Xiaofang Zhou, Heng Tao Shen
2005 Lecture Notes in Computer Science  
for caching MSD in mobile environments.  ...  In this paper, we provide the first attempt to combine two important techniques, multiresolution spatial data structure and semantic caching, towards efficient spatial query processing in mobile environments  ...  Acknowledgment: The work reported in this paper has been partially supported by grant DP0345710 from the Australian Research Council.  ... 
doi:10.1007/11535331_22 fatcat:6aqj252bunacfj4xqtt6v4bcca

Semantic Caching for Web-Based Spatial Applications [chapter]

Sai Sun, Xiaofang Zhou
2005 Lecture Notes in Computer Science  
Semantic caching for spatial data is a much more complex problem than semantic caching for aspatial data. Several novel ideas are proposed in this paper for spatial applications.  ...  In this paper, we study the problem of semantic spatial caching, focusing on effective organization of spatial data and spatial query trimming to take advantage of cached data.  ...  We thank Sham Prasher and David Horgan for many helps received from them during this project.  ... 
doi:10.1007/978-3-540-31849-1_75 fatcat:wgczjfcepvayhfpf27374wrjxq

3DNSITE

Giovanni Pintore, Enrico Gobbetti, Fabio Ganovelli, Paolo Brivio
2012 Proceedings of the 17th International Conference on 3D Web Technology - Web3D '12  
a multi-level cache system for both the images and 3D models structure.  ...  In this peculiar context, it is very important to easily share 3D environment data among people in a distributed environment, accessing huge 3D models with embedded photographs on devices with heterogenous  ...  At run-time one or more images can by inserted in the existent dataset, acquired directly by a mobile client or collected in the main control room by various sources. vices, on which caching and multiresolution  ... 
doi:10.1145/2338714.2338723 dblp:conf/vrml/PintoreGGB12 fatcat:ghj2qen7fjb7lkimnkyl2xon5y

KOLAM: a cross-platform architecture for scalable visualization and tracking in wide-area imagery

Joshua Fraser, Anoop Haridas, Guna Seetharaman, Raghuveer M. Rao, Kannappan Palaniappan, Matthew F. Pellechia, Richard J. Sorensen, Kannappan Palaniappan
2013 Geospatial InfoFusion III  
and mobile computers.  ...  It was originally developed for the interactive visualization of extremely large geospatial imagery of high spatial and spectral resolution.  ...  Government is authorized to reproduce and distribute reprints for Government purposes notwithstanding any copyright notation thereon.  ... 
doi:10.1117/12.2018162 fatcat:ux7qxsmlqjgxtiosglmoubvs2i

iScope

Changyun Zhu, Kun Li, Qin Lv, Li Shang, Robert P. Dick
2009 Proceedings of the 7th international conference on Mobile systems, applications, and services - Mobisys '09  
Mobile devices are becoming a primary medium for personal information gathering, management, and sharing.  ...  This article presents a user-centric system, called iScope, for personal image management and sharing on mobile devices. iScope uses multi-modality clustering of both content and context information for  ...  As queries are processed, more metadata is cached, improving the cache hit rate.  ... 
doi:10.1145/1555816.1555845 dblp:conf/mobisys/ZhuLLSD09 fatcat:dugm6alkkfh6hklx6trinf7oz4

HuMoRS

Marcos Balsa Rodríguez, Marco Agus, Fabio Marton, Enrico Gobbetti
2014 Proceedings of the Nineteenth International ACM Conference on 3D Web Technologies - Web3D '14  
The system integrates a networked architecture for adaptive on-device rendering of multiresolution surfaces with a simple and effective interactive camera controller customized for touchenabled mobile  ...  Abstract We present HuMoRS, a networked 3D graphics system for interactively streaming and exploring massive 3D mesh models on mobile devices.  ...  A trend consists in clustering images hierarchically, according to some kind of image semantic, like combining time and space [Ryu et al. 2010] , spatial image-distances [Jang et al. 2009 ], or a mixture  ... 
doi:10.1145/2628588.2628593 dblp:conf/vrml/RodriguezAMG14 fatcat:vnwceixdyrgqlkcuwnun6uusta

A critical evaluation of location based services and their potential

Jonathan Raper, Georg Gartner, Hassan Karimi, Chris Rizos
2007 Journal of Location Based Services  
e.g., as in the case of mobile phonebased positioning.  ...  Geopositioning Location or position determination, or 'geopositioning', is a crucial technology for LBS, as is the contextual mapping of the natural and built environment.  ...  Acknowledgements The Editorial team of JLBS wish to thank the publishing team at Taylor and Francis for their support in establishing the Journal, the members of the Editorial Board who have reviewed this  ... 
doi:10.1080/17489720701584069 fatcat:spmkpyyds5bzfnmu7dgidrcpqq

Multi-Resolution Information Transmission in Mobile Environments

Hong Va Leong, Antonio Si
2005 Mobile Information Systems  
Mobile environments are characterized by low communication bandwidth and frequent disconnection.  ...  In particular, various organizational units of a document are transmitted to a mobile client in an order according to their information content, thereby allowing the client to terminate the transmission  ...  This is important in a mobile environment where bandwidth is scarce.  ... 
doi:10.1155/2005/595629 fatcat:yfw3gbvar5dqfoo5qf7zppa2ay

A Fully Distributed Scheme for Discovery of Semantic Relationships

Juan Li, Hui Wang, Samee Ullah Khan, Qingrui Li, Albert Y. Zomaya
2013 IEEE Transactions on Services Computing  
Because of the decentralized and distributed nature of Semantic Web development, semantic data tend to be created and stored independently in different organizations.  ...  Semantic relation discovery is a fundamental technology in analytical domains, such as business intelligence and homeland security.  ...  Our proposed discovery algorithm uses a hierarchical and multiresolution strategy to search for semantic paths. We believe this strategy improves the scalability of the system.  ... 
doi:10.1109/tsc.2012.16 fatcat:jebtrabmordrpb5cn3hsclvb7m

Interactive Visual Exploration of a Large Spatio-temporal Dataset: Reflections on a Geovisualization Mashup

Jo Wood, Jason Dykes, Aidan Slingsby, Keith Clarke
2007 IEEE Transactions on Visualization and Computer Graphics  
Our case study combines MySQL, PHP and the LandSerf GIS to allow Google Earth to be used for visual synthesis and interaction with encodings described in KML.  ...  This approach is applied to the exploration of a log of 1.42 million requests made of a mobile directory service.  ...  ACKNOWLEDGEMENTS We gratefully acknowledge the support of go2 Directory Systems (www.go2.com) in allowing us access to samples of their spatially referenced query data, the Leverhulme trust, which funded  ... 
doi:10.1109/tvcg.2007.70570 pmid:17968062 fatcat:zraivvtbqngzrlf7tifemsfk74

An In-Network Querying Framework for Wireless Sensor Networks

M. Demirbas, Xuming Lu, P. Singla
2009 IEEE Transactions on Parallel and Distributed Systems  
DQT is distance sensitive for querying of an event: the cost of answering a query for an event is at most a constant factor ( 2 √ 2 in our case) of the distance "d" to the event of interest in the network  ...  In contrast to traditional wireless sensor network (WSN) applications that perform only data collection and aggregation, new generation of information processing applications, such as pursuit-evasion games  ...  In WSNs, sensed data from the environment is usually highly correlated both in spatial and temporal domains.  ... 
doi:10.1109/tpds.2008.217 fatcat:gytosmylkndencq7mhzdug3kki

Bringing Geospatial Data Closer to Mobile Users: A Caching Approach Based on Vector Tiles for Wireless Multihop Scenarios

Chao Li, Huimei Lu, Yong Xiang, Zhuoqun Liu, Wanli Yang, Ruilin Liu
2018 Mobile Information Systems  
To address this issue, we designed a scheme based on vector tiles to organize spatial data and proposed a system named GeoTile for geospatial data caching and sharing.  ...  In GeoTile, a tile request from the mobile client relies on multihop communication over intermediate nodes to reach the server.  ...  Jingbang Wu for his support on wireless prototype system and suggestions on experiments and to Yu Zhang for his support on road traffic information.  ... 
doi:10.1155/2018/5186495 fatcat:efbb3jlsanhkzm477iepnu3kea

Distributed Information and Computation in Scientific and Engineering Environments

Nicholas M. Patrikalakis, Paul J. Fortier, Yannis E. Ioannidis, Christos N. Nikolaou, Allan R. Robinson, Jarek R. Rossignac, Alvar Vinacua, Stephen L. Abrams
1999 D-Lib Magazine  
Management for Scientific and Engineering Environments (DICPM) was held at the Hyatt Dulles in Herndon, Virginia, USA, on May 15-16, 1998.  ...  The NSF Invitational Workshop on Distributed Information, Computation, and Process Management for Scientific and Engineering Environments (DICPM) brought together domain specialists from engineering and  ...  as well as in query processing.  ... 
doi:10.1045/april99-abrams fatcat:5krbkkwwubdsznmkjcr4ppxe7m

Research activities in database management and information retrieval at University of Illinois at Chicago

Isabel Cruz, Ashfaq Khokhar, Bing Liu, Prasad Sistla, Ouri Wolfson, Clement Yu
2002 SIGMOD record  
concurrency control, recovery, query language and query processing, and serves as a platform for inventory and personnel application development.  ...  We assume that semantic objects (for example persons) and their relationships (spatial as well as relationships involving actions such as handshake) can be extracted from low level features and other information  ... 
doi:10.1145/601858.601882 fatcat:qesyp7osefh7dfsmaagjjd2t2a

Next-generation Digital Earth

M. F. Goodchild, H. Guo, A. Annoni, L. Bian, K. de Bie, F. Campbell, M. Craglia, M. Ehlers, J. van Genderen, D. Jackson, A. J. Lewis, M. Pesaresi (+5 others)
2012 Proceedings of the National Academy of Sciences of the United States of America  
It argues that the vision of Digital Earth put forward by Vice-President Al Gore 10 years ago needs to be re-evaluated in the light of the many developments in the fields of information technology, data  ...  The paper is offered as input for discussion among different stakeholder communities with the aim to shape research and policy over the next 5-10 years.  ...  These servers cache copies of the most frequently used or viewed data, including map tiles. They are also capable of processing vast quantities of information in order to respond to client queries.  ... 
doi:10.1073/pnas.1202383109 pmid:22723346 pmcid:PMC3396470 fatcat:ccly5rs4ejbnnmp34xyyu4ntxy
« Previous Showing results 1 — 15 out of 95 results