The isometric feature mapping(Isomap) is one of the widely used low-dimensional embedding methods. However, Isomap has three bottlenecks: sensitivity to outliers, high computational complexity and topological instabil...
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ISBN:
(纸本)9781510806450
The isometric feature mapping(Isomap) is one of the widely used low-dimensional embedding methods. However, Isomap has three bottlenecks: sensitivity to outliers, high computational complexity and topological instability caused by short-circuit edges. To address above problems, by introducing the concepts of linear patch(LP) and k-nearest center(k-NC), a LP-center based Isomap(LPC-Isomap) approach is proposed in this paper. Firstly, before constructing a neighborhood graph, outliers are eliminated by LPC-Isomap. Then LP-centers are selected reasonably as landmark points by LPC-Isomap to reduce computational complexity. We compute the intersections between k-NC of each pair of points. If an intersection is empty, the edge connecting the corresponding pair of points is considered as a short-circuit edge. Lastly, the useful behavior of LPC-Isomap is verified through numerical examples with several data sets.
This paper discusses a typical supply chain system based on Auto- Regressive Integrated Moving Average (ARIMA) demand process. Minimum Mean Square Error principle and stochastic optimal control theory are introduced t...
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Time synchronization protocols are widely used in industrialcontrolsystems. As the development of network technology, various types of attacks have occurred. Among them, delay attacks are less studied. In this paper...
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Green supply chain has become a promising and challenging field during the last decade driven by rising environmental conscious business and governmental legislation. In this paper, we develop a Petri-net based model ...
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Traditional optimization of production system and utility system is carried out separately which cannot ensure that the entire refinery system is optimized globally. In this paper, a novel integrated approach is propo...
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Ethylene cracking furnace system is the heart of ethylene production. It can process different raw materials in the pipe group of each furnace and can produce the main chemical products like ethylene, propylene and et...
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The studies on the controllability of complex networks popularly existing in natural, social and man-made engineered systems have been a critical and attractive subject for both academic and practical communities. To ...
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Based on a transport partial differential equation representation of input delay, this paper deals with the classic problem of trajectory tracking for uncertain linear time-delay systems under partial state measuremen...
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ISBN:
(纸本)9781479978878
Based on a transport partial differential equation representation of input delay, this paper deals with the classic problem of trajectory tracking for uncertain linear time-delay systems under partial state measurement, plant parameter and actuator delay adaptation. An implementable output feedback control strategy is proposed and a recent restriction on relative degree is removed. The Lyapunov-based analysis shows the local stability of the closed-loop error system.
Short message is one of the most common communication media for mobile subscribers, so major mobile operators are devoted to improve their Short Message Service (SMS). However, the annoying and undesired messages, als...
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ISBN:
(纸本)9781467384155
Short message is one of the most common communication media for mobile subscribers, so major mobile operators are devoted to improve their Short Message Service (SMS). However, the annoying and undesired messages, also named message spam or simply spam, not only worsen the users' experience, but also cause their complaints on SMS. In this paper, we present a novel Chinese SMS spam filtering framework based on AdaBoost algorithm to provide accurate and effective short messages classification. Three content-based weak filters are introduced to boost the performance of final classification decision. Results from Receiver Operating Characteristics (ROC) analysis prove the proposed method has such advantages as higher efficiency and fewer parameters over those established SMS spam filtering methods. The application of the proposed method is expected to block the most spam for mobile subscribers and improve the service quality of SMS. With simple data processing and few training parameters, the proposed method can be applied into the practice of short text classification.
The traditional PHD tracker(PHDT) generates the newborn PHD from the prior knowledge, thus can not be applied when the prior newborn target knowledge is unavailable. To this end, we propose a historical information fe...
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ISBN:
(纸本)9781479947249
The traditional PHD tracker(PHDT) generates the newborn PHD from the prior knowledge, thus can not be applied when the prior newborn target knowledge is unavailable. To this end, we propose a historical information feedback multiple-target tracker(HIFMTT) as an improvement to the traditional PHDT. The HIFMTT generates the newborn PHD through processing the historical observation and estimating results with a feedback structure, and thus can overcome the above mentioned difficulty. For the real application, we also construct the PF-HIFMTT algorithm by embedding the particle filter into the HIFMTT framework. The simulation results demonstrate the effectiveness of the PF-HIFMTT algorithm in two different scenarios.
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