融合QoS靜默爬蟲感知的云任務(wù)調(diào)度活性表征
本文選題:QoS + 靜默爬蟲 ; 參考:《科技通報(bào)》2015年02期
【摘要】:傳統(tǒng)的基于粒子群的云計(jì)算任務(wù)調(diào)度算法不能感知QoS用戶偏好,任務(wù)調(diào)度活性不強(qiáng),適應(yīng)度低。對此提出一種融合QoS靜默爬蟲感知的云計(jì)算任務(wù)調(diào)度算法,定義活性因子進(jìn)行活性表征,提高云計(jì)算任務(wù)調(diào)度中的活性,進(jìn)而提高用戶的滿意率。設(shè)計(jì)了網(wǎng)絡(luò)QoS靜默爬蟲算法,實(shí)現(xiàn)了對云任務(wù)的彈性抓取,靜默爬蟲數(shù)據(jù)在Javascript程序內(nèi)部經(jīng)過變量賦值、傳遞,字符編碼和過濾,在向量空間模型中,進(jìn)行多QoS因素的靜默爬蟲活性度表征,得到任務(wù)調(diào)度分配鏈路中的比例分值,有效反映出云計(jì)算任務(wù)調(diào)度的結(jié)構(gòu)特征,提高了任務(wù)調(diào)度效率和活性成分。仿真結(jié)果表明,采用多QoS因素靜默爬蟲感知技術(shù),能有效地反映不同類型任務(wù)的QoS偏好,提高了任務(wù)調(diào)度的活性,整個(gè)調(diào)度過程的時(shí)間開銷影響不大,總執(zhí)行時(shí)間最多也僅比傳統(tǒng)PSO多了10%左右,但以較少的執(zhí)行時(shí)間增加換取用戶的滿意率是值得的。展示了算法的優(yōu)越性能和較好的應(yīng)用價(jià)值。
[Abstract]:Traditional cloud computing task scheduling algorithm based on particle swarm optimization can not perceive QoS user preference, task scheduling activity is not strong, and the adaptability is low. In this paper, a cloud computing task scheduling algorithm based on QoS silent crawler perception is proposed, which defines the active factor to represent the activity, improves the activity of cloud computing task scheduling, and then improves the satisfaction rate of users. A network QoS silent crawler algorithm is designed, which realizes the elastic capture of cloud tasks. The silent crawler data is assigned, transmitted, encoded and filtered by variables in the Javascript program, and is used in vector space model. The multiple QoS factors are used to characterize the activity of silent crawler, and the proportional score in the task scheduling allocation link is obtained, which effectively reflects the structural characteristics of cloud computing task scheduling, and improves the efficiency and active components of task scheduling. The simulation results show that the multiple QoS factor silent crawler sensing technology can effectively reflect the QoS preference of different types of tasks and improve the activity of task scheduling. The time cost of the whole scheduling process is not significant. The total execution time is only about 10% more than the traditional PSO, but it is worthwhile to increase the execution time in exchange for the satisfaction rate of the user. The superior performance and good application value of the algorithm are demonstrated.
【作者單位】: 天津體育學(xué)院體育文化傳媒系;
【分類號】:TP393.09;TP391.1
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