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A key problem in online social networks is the identification of users' link information and the analysis of how these are reflected in the recommender systems. The basis to tackle this issue is user similarity measures. In this paper, we propose non-negative multiple matrix factorization with social similarity for recommender systems, considering the similarities between users, the relationships...
A recognized drawback of edge-emitting diode lasers is their high divergence and elliptical beam shape since the first diode laser was demonstrated. In this paper, we demonstrated the ultranarrow circular beam emission from the broad area diode laser based on a modified Bragg-like waveguide. The low vertical divergence of 9.8° with 95% power content and 4.91° with the full-width at half-maximum was...
A full-reference video quality assessment (VQA) method, called the ensemble-learning-based video quality assessment (EVQA) index, is proposed in this work. As compared with previous learning-based VQA methods, it has two unique features. First, EVQA adopts a frame-based learning mechanism to address the limited training data problem. Second, a dynamic image quality assessment(IQA) fusion scheme is...
Virtual hand plays an important role in many human-computer interaction applications. However, modeling a life-like 3D virtual hand is not a trivial task, especially the creation of flexible skin textures. In this paper, we propose a new method to execute texture mapping for the 3D virtual hand model automatically and apply it for human-computer interaction in real-time. Specifically, We first adjust...
In this work, we study the visual quality of streaming video and propose a fusion-based video quality assessment (FVQA) index to predict its quality. In the first step, video sequences are grouped according to their content complexity to reduce content diversity within each group. Then, at the second step, several existing video quality assessment methods are fused to provide the final video quality...
In this paper, we study run-time reconfiguration problem for tolerating core failures on NoC many core platforms with following three objectives:(1) maintaining the maximal timing similarity between real-time embedded application' timing properties before and after the system reconfiguration, (2) guaranteeing to meet real-time embedded application's deadline requirements after system reconfiguration,...
GSM-R (GSM for Railway) network is a professional cellular network which is used for railway transportation. Unlike mobiles with low speed in regular GSM network, in GSM-R network the signals received by mobiles on high speed trains may suffer severe Doppler shift and other interferences. In this paper, a novel handover scheme based on train index in GSM-R network is proposed. This method makes use...
The studies of citations are comprehensively carried out with the increasing electronically citation data on the Web. Most of the metrics observe scientific quality in a global view instead of in multiple fine-grained views. In this paper, we suggest to apply Topic Model and adaptive PageRank algorithm to assess the relative importance of scientific objects including articles, authors, conferences...
The evaluation system is developed for network attack effect in this paper, and present the process from launching an attack to the result of evaluation being outputted. Based on an evaluation index system suitable for the system, we analyses some theories and methods respectively which are adopted to realize their functions by the main modules. Synthesis account of evaluated effect is conducted with...
In order to evaluate the robustness performance of process control system with uncertainties, four quantified stochastic robustness indices are introduced upon some typical stochastic variable ranking criteria. Based on them, four kinds of stochastic robust controller optimization problems are presented to meet the system requirements. To solve the multi-objective stochastic programming problems,...
Over the past two decades, financial market crises with similar features have occurred in different regions of the world. Unstable cross-market linkages during financial crises are referred to as financial contagion. We simulate the transmission of financial crises in the context of a model of market participants adopting various strategies; this allows testing for financial contagion under alternative...
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