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With the rapid rise of various e-commerce and social network platforms, users are generating large amounts of heterogeneous behavior data, such as purchasehistory, adding-to-favorite, adding-to-cart and click activities, and this kind of user behavior data is usually binary, only reflecting a user's action or inaction (i.e., implicit feedback data). Tensor factorization is a promising means of modeling...
Feature space transformation techniques have been widely studied for dimensionality reduction in vector-based feature space. However, these techniques are inapplicable to sequence data because the features in the same sequence are not independent. In this paper, we propose a method called max–min inter-sequence distance analysis (MMSDA) to transform features in sequences into a low-dimensional subspace...
We propose a residual-consensus driven linear matching algorithm for simultaneous geometric parameter and point correspondence estimation. Using the linearization technique, we quantize geometric transformation into discrete levels with regard to each correspondence matrix. We identify the uncontaminated models by evaluating the statistical coherent of residual ordering and Maximum mean discrepancy...
In Web service composition, operating environment information and user requirement information change constantly. To better adapt these dynamic changes, this paper provides adaptive mechanism of service composition. An adaptive Web service composition framework is presented. The main function modules of this framework including Execution Engine, Monitor, Analyzer and Planner are implemented using...
Congestion control mechanisms are essential to stabilize the network system and provision quality of service. In this paper, we propose a robust congestion control scheme for time-delay and dynamic networks. First, a Smith predictor is used to compensate for time delay in the data transmission. Second, an active queue management controller is derived using internal model control theory for strong...
Based on model reference adaptive control (MRAC), a MRAC synchronous controller is designed. And the reference model of the MRAC is determined according to the linear mathematical model of the electro-hydraulic servo system. Then the synchronous controller is applied to position synchronization of two cylinders system. The experiment results show that the proposed controller can effectively reduce...
In recent years, with the prevailing usage of web data repository over emergency field, extracting the web data plays an important role in tracking the evolution of event. With huge and still growing web data, an important task is to track emergency event evolution and analyze its latent events or topics over time. Unfortunately, emergency events are inherently with uncertainty because the complexity...
Scaling down the supply voltage for embedded SoC becomes a necessary technique to lower power requirements in mobile devices. However, caches become susceptible or even fail in low voltages, and distribution of access latencies is significantly increased in new technology nodes. Past researches suggested several solutions to deal with the memory reliability at low voltages, where a timing table records...
The TCP/AQM dynamics is modeled as a time-delay congestion control system, in which the round trip time (RTT) has great influence on the system stability and network performance. Most of the existing active queue management (AQM) algorithms suffer from performance degradation, and fail to provide quality of service (QoS) when the RTT delay becomes remarkable. To address the problem, we present an...
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