Context data management for large scale context aware ubiquitous systems

... context- aware systems to make the transition from lab based deployments to a large scale real world setting 1.2 Data management in context- aware systems As the primary function of context- aware systems ... effective context data management system The essential functions of a context data management system are – acquiring context data, processing the ac...

Ngày tải lên: 30/09/2015, 05:44

... dramatically because of the high demand for computational and data resources Large scale scientific applications are the main drivers for this demand since they involve large number of simulations and ... structures [25] 3.2.3 NAMD NAMD(Nanoscale Moleculer Dynamics) [27], which is a molecular dynamics simulations program designed for high-performance simulation of large biomole...

Ngày tải lên: 30/10/2014, 20:07

... constructing peer- to -peer applications and understanding more of the issues and requirements of such applications and systems [1, 2, 5, 8, 10, 15] One of the key problems in large- scale peer- to -peer ... peer- to -peer applications is to provide efficient algorithms for object location and routing within the network This paper presents Pastry, a generic...

Ngày tải lên: 28/04/2014, 13:40

... performs 5∼50 times faster for training (1,774 s for M ALLET, 18,134 s for C RF ++, Experiment We evaluated our method on six large-scale natural language data sets (Table 1): Penn Treebank3 for ... decoding (2.881 ms for M ALLET, 5.028 ms for C RF ++, and 0.418 ms for ours) This result demonstrates that learning and decoding CRFs for large-scale natural language...

Ngày tải lên: 23/03/2014, 17:20

... computing is a study of pervasive computer systems (a combination of hardware and software)13 that are aware of context and can automatically adapt and respond to such context Context awareness enables ... Thursday, November 2, 2006 11:07 AM Context-Aware TITLE PAGE Pervasive Systems Architectures for a New Breed of Applications SENG LOKE Boca Raton New York...

Ngày tải lên: 01/06/2014, 00:18

... implement peer-to-peer network under any network channel., This make peer-to-peer network particularly suitable for implementing ubiquitous learning environments for collaborative learning (Brase, ... 2005; Edutella, http://edutella.jxta.org/) Context Model and Context Acquisition for Ubiquitous Learning Environments Context is referred to as any information th...

Ngày tải lên: 29/06/2014, 02:20

... student at University of California, Berkeley had all her files and many emails erased by this hacker In another incident at UC Berkeley a bioinformatics lab was successfully hacked Key data on ... journals Digital data are more ephemeral and, because modern technology allows information to be generated at a much faster rate, the scale of digital information is vastly greater tha...

Ngày tải lên: 14/08/2014, 14:22

... implementations differ, NoSQL database management systems share a common set of characteristics: • No schema required Data can be inserted in a NoSQL database without first defining a rigid database schema ... necessity, forced to invent new approaches to data management These NoSQL or non-relational database technologies are a better match for the needs of modern int...

Ngày tải lên: 19/02/2014, 12:20

... Joint Feature Selection in Distributed Stochastic Learning The following discussion of learning methods is based on pairwise ranking in a Stochastic Gradient Descent (SGD) framework The resulting ... from scaling discriminative training for SMT to large training sets We deploy generic features for SCFG-based SMT that can efficiently be read off from rules at runtime...

Ngày tải lên: 19/02/2014, 19:20

... not of great value for access to segments of video, may be important for organizing other concepts and for browsing the hierarchy These factors must be balanced in developing a cost-effective process ... translation accuracy for our system can be directly interpreted as quality measures for the lexical resources used and the process by which they were developed Evaluation We per...

Ngày tải lên: 08/03/2014, 02:21

... described the first system for automatically acquiring verbal, nominal and adjectival subcategorization and associated frequency information from English corpora, which can be used to build large-scale ... Automatic acquisition of subcategorization frames from untagged text In Proc of the 29th Meeting of ACL, pages 209–214 E J Briscoe and J Carroll 1997 Auto...

Ngày tải lên: 17/03/2014, 04:20

... The ALPACAS framework essentially consists of a set of collaborative anti-spam agents An email agent can either be an entity that participates in the ALPACAS framework on behalf of an individual ... privacy protection F Communication Overheads of the ALPACAS approach Communication overhead is a major factor affects the performance of collaborative anti-spam systems We compar...

Ngày tải lên: 22/03/2014, 22:26

... behavior happens, and therefore Approach There are four steps in our approach for mining console logs We first extract structured information from console logs By combining logs with source code, ... algorithm to refine detection results In summary, our initial work has opened up many new opportunities for turning built-in console logs into a powerful monitoring system...

Ngày tải lên: 30/03/2014, 16:20

... progress in language modeling Technical report, Microsoft Research Reinherd Kneser and Hermann Ney 1993 Improved clustering techniques for class-based statistical language modelling In Proceedings ... the largest improvements using a specific clustering for the last word of each trigram but no clustering at all for the first two word positions Generalizing this leads...

Ngày tải lên: 31/03/2014, 00:20

... nt Nt Antenna selection & Beamforming Nr Feedback nr RF Antenna selection & Beamforming Figure A 60 GHz MIMO system employing antenna selection and transmit/receive beamforming Once the antenna ... antenna selection and Tx/Rx beamforming for large-scale MIMO systems in 60 GHz channels EURASIP Journal on Wireless Communications and Networki...

Ngày tải lên: 21/06/2014, 01:20