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With the increase of systems' complexity, exception detection becomes more important and difficult. For most complex systems, like cloud platform, exception detection is mainly conducted by analyzing a large amount of telemetry data collected from systems at runtime. Time series data and events data are two major types of telemetry data. Techniques of correlation analysis are important tools that...
Recently, categorization methods based on association rules have been given much attention. In general, association classification has the higher accuracy and the better performance. However, the classification accuracy drops rapidly when the distribution of feature words in training set is uneven. Therefore, text categorization algorithm Weighted Association Rules Categorization (WARC) is proposed...
LOF is a well-known approach for density-based outlier detection and has received much attention recently. It is important to design a privacy-preserving LOF outlier detection algorithm as the data on which LOF runs is typically spilt among multiple participants and no one is willing to disclose his sensitive information due to legal or moral considerations. This is, however, a hard problem since...
In order to accomplish the product special requirements of customers and establish the product developing platform for non-professional effectively, the requirement feature and requirement agile expression model of individualized product were put forward. The logical meta model and physical structure model of individualized product requirement information were built, the basic management and operating...
A communication system using multilayer coded modulation is introduced to detail the basic principles of hierarchical combined equalization based on linear minimum mean square error (MMSE) algorithm. A simplified hierarchical equalizer's extrinsic information of base-layer for 4-QAM multilayer coded modulation is presented. A new hierarchical equalization method of base layer is applied to multilayer...
The challenge in rehabilitation training process is to make suitable changes to some parameters such as auxiliary power, driving resistance etc. based correct judgments for patient's physiological state, so as to help patient achieve continuous movement under the heaviest possible "driving resistance load", hence to achieve the best rehabilitation effect. This paper focuses on the issue,...
In the scene simulation system of UAV, 3D imaging was generated by method -based DEM and massive orthograph that displayed real terrain. The imaging was very realistic. The system adopted the method of cutting down scene based on line of sight, image of cache based on frame and texture swapping, to enhance the speed of PC, and improve performance of the system, so real-time creating scene of massive...
BNT-based lead-free piezoelectric ceramics have been attracting great attention worldwide as new piezoelectric ceramics which will be most possibly in place of lead-containing piezoelectric ceramics. However, they are not as good as those lead-based piezoelectric ceramics and need to be further improved. In this paper, the recent development of researches on BNT-based lead-free piezoelectric ceramics...
Piezoelectric ultrasonic transducer is the transducer which is technically designed for electrical measurement of non-medical electrical capacity, some physiology parameters of human body like blood pressure, pulse, breathe, body temperature, and etc. are non-electrical capacity. In order to measure these physiological parameters, the simplest way is to change them for the project is technically easier...
Through analysis of remote sensing technologypsilas application in the investigation and appraisal of geological hazard, in view of the application of remote sensing interpretation about debris flow geological hazard in small basin area, this paper presents the remote sensing interpretation method (RSVH) based on virtual GIS and hydrology spatial analysis. RSVH integrates virtual GIS, digital processing...
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