On the Store Strate gy of Small Spatio-Temporal Data Files in Cloud Environment
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摘要: 人群密集场所的人群智能监控是公共安全领域中一个重要而困难的问题 以鱼眼图像为研究对象提出了一种基于透视加权模型的密集人群智能监控方法 实验结果表明本文方法能有效实时准确地对室内密集人群进行密度估计和人数统计Abstract: Internet applications create massive small spatio-temporal data files in cloud environments.Therefore a method aimin g to raise the processing efficienc y of small files in HDFSa data scheme combining user access and data featuresis proposed.This scheme re gards a user access stream as file re quest se quenceand constructs a characteristic se quence by spatio-temporal attribute extraction.A characteristic template of different user access patterns is formed when anal yzin g the characteristic sequence by template matching.Then merger-related files are anal yzed.Experimental results show that our scheme improves the stora ge efficienc y for small files and also decreases network application response times.
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Keywords:
- loud stora ge /
- small file /
- spatio-temporal data /
- feature extraction
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