the proceedings contain 4 papers. the topics discussed include: processing online aggregation on skewed data in MapReduce;SO-1SR: towards a self-optimizing one-copy serializability protocol for data management in the ...
ISBN:
(纸本)9781450324168
the proceedings contain 4 papers. the topics discussed include: processing online aggregation on skewed data in MapReduce;SO-1SR: towards a self-optimizing one-copy serializability protocol for data management in the cloud;analysis of partitioning strategies for graph processing in bulk synchronous parallel models;and a SLA graph model for data services.
For solving large instances of the Travelling Salesman Problem (TSP), the use of a candidate set (or candidate list) is essential to limit the search space and reduce the overall execution time when using heuristic se...
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the k nearest neighbor (kNN) computing is an important task in different fields such as LBSN and database area. Recently some methods have been proposed to accelerate kNN searching algorithms for static points with GP...
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Experiments with particle accelerators are the result of a highly complex interplay between various machines. the associated production chains for a beam, from ion source to target(s), are both a coordination and sche...
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ISBN:
(纸本)9780946881819
Experiments with particle accelerators are the result of a highly complex interplay between various machines. the associated production chains for a beam, from ion source to target(s), are both a coordination and scheduling problem, with many interdependencies and multiple paths to consider. this ranges from system initialisation and synchronisation of numerous machines to interlock handling and appropriate contingency measures like beam dump scenarios. the Facility for Antiproton and Ion Research (FAIR) is in need of a matching control system, able to handle more than 2000 front-end devices, fully parallel code execution and deterministic command delivery. this paper deals withthe analysis of the underlying requirements of the FAIR site, models of the accelerators and discusses possible architectures for a timing master unit to use these models.
3D model reconstruction based on parallel contour is a problem distributed in many application fields, which include main matter of correspondence, branch, tilling and fitting. the research situation of branch problem...
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ISBN:
(纸本)9780819493057
3D model reconstruction based on parallel contour is a problem distributed in many application fields, which include main matter of correspondence, branch, tilling and fitting. the research situation of branch problem is described in this paper, and a definition is given according to the model features of branch. the contours in the adjacent plane are projected in the same plane, and divided into two classes through the region division method. Algorithm which to calculate the auxiliary branch geometry object is present in this paper withthe polygon center line method. Finally, experimental study was carried out in 3D geological modeling, and experiments show that the algorithm in this paper can improve the modeling efficiency and precision.
In wind tunnel tests, the pose of the aircraft model in wire-driven parallel suspension system (WDPSS) is determined by driving several wires. Pose measurement is very important for the study of WDPSS. Using machine v...
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ISBN:
(纸本)9780819495877
In wind tunnel tests, the pose of the aircraft model in wire-driven parallel suspension system (WDPSS) is determined by driving several wires. Pose measurement is very important for the study of WDPSS. Using machine vision technology, Monocular Vision Measurement System has been constructed to estimate the pose of the aircraft model by applying a camera calibration, by extracting corresponding control points for the aircraft model, and by applying several homogeneous transformations. this article describes the programs of the measurement system, measurement principle and data processing methods which is based on HALCON to achieve the Solution of the pose of aircraft model. through experiments, practical feasibility of the system is validated.
R-tree and its varieties are the main indiecs in spatial databases. Withthe increasing large amount of spatial data and its complexity, traditional database management methods' processing time grows rapidly. In t...
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With a suitable method to rank the user influence in micro-blogging service, we could get influential individuals to make information reach large populations. Here a novel parallel social influence model is proposed t...
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the programming model of parallel tasks is a suitable programming abstraction for parallel applications running on heterogeneous clusters, which are clusters composed of multiple subclusters. In this model, an applica...
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the forward modeling of wave propagation is a widely-used computational method in oil and gas exploration. Its iterative stencil loops also have broad applications in scientific computing. However, the time-consuming ...
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