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Real world Web mining applications usually have different requirements, such as massive data processing, low system latency, and high scalability. In order to meet these different requirements, we proposed a distributed text mining system with a layered architecture that divides the system functions into three layers, namely, the crawling and storage layer, the basic mining layer, and the analysis...
In many applications, monitor equipments produce a large number of time series which need to be analyzed. Segments of time series demonstrating dominating advantages over others are often of particular interest. Based on the measurement of volume attribute, the existing research about interval skyline was proposed. The query returns the time series which are not dominated by any other time series...
Processing multi-extreme value queries efficiently over data streams is important for data analysis in real-time environment. Cost-efficient processing of continuous extreme values queries over sliding windows, especially about resource sharing, is considered. Firstly, an effective storage structure to minimize the number of elements to be kept for queries is given. We prove the average the cardinality...
This paper considers the problem of the dynamic risk assessment for the network based on the threat stream analysis. We analyze the general approach to do the network dynamic risk assessment. A stream based cube model is built to analyze the characteristics of the threat stream. Then combining with the research about the description and analysis of the threat effect, we propose the architecture of...
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