arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1901.09294cs.LGstat.ML
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基于多视图学习的云计算平台异常检测与排序

Anomaly detecting and ranking of the cloud computing platform by multi-view learning

Liaoning Normal University(辽宁师范大学)

Jing Zhang

摘要:

异常检测作为云计算中的一项重要技术,用于支持云平台的平稳运行。传统的基于统计、分析等的检测方法由于参数设置的非适应性和敏感性,导致虚警率高。提出了一种基于机器学习理论的在线异常检测模型。然而,现有的大多数基于机器学习的方法都是将不同子系统的所有特征直接连接成一个长的特征向量,既难以充分利用子系统间的互补信息,又忽略了多视角特征对分类性能的提升。针对这一问题,该方法自动融合多视角特征,并优化判别模型,以提高准确率。该模型利用极限学习机(ELM)提高检测效率。ELM是一种单隐层神经网络,它将迭代求解输出权值转化为求解线性方程组,避免了局部最优解。然后根据样本与分类边界的关系对异常进行排序,并为排序后的异常分配权重,最后对分类模型进行再训练。该方法充分利用了子系统间的互补信息,避免了不平衡数据集的影响,从而能够应对云计算平台带来的各种挑战。我们通过Openstack部署私有云平台,验证了所提出的模型,并将结果与最先进的方法进行比较,具有更好的效率和简单性。

英文摘要:

Anomaly detecting as an important technical in cloud computing is applied to support smooth running of the cloud platform. Traditional detecting methods based on statistic, analysis, etc. lead to the high false-alarm rate due to non-adaptive and sensitive parameters setting. We presented an online model for anomaly detecting using machine learning theory. However, most existing methods based on machine learning linked all features from difference sub-systems into a long feature vector directly, which is difficult to both exploit the complement information between sub-systems and ignore multi-view features enhancing the classification performance. Aiming to this problem, the proposed method automatic fuses multi-view features and optimize the discriminative model to enhance the accuracy. This model takes advantage of extreme learning machine (ELM) to improve detection efficiency. ELM is the single hidden layer neural network, which is transforming iterative solution the output weights to solution of linear equations and avoiding the local optimal solution. Moreover, we rank anomies according to the relationship between samples and the classification boundary, and then assigning weights for ranked anomalies, retraining the classification model finally. Our method exploits the complement information between sub-systems sufficiently, and avoids the influence from imbalance dataset, therefore, deal with various challenges from the cloud computing platform. We deploy the privately cloud platform by Openstack, verifying the proposed model and comparing results to the state-of-the-art methods with better efficiency and simplicity.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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