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Understanding ongoing topics and their evolutions in social media is of great importance. Although topic analysis is not a novel research question, social media environment has presented new challenges. First, with insufficient co-occurrence information, short text have undermined many word co-occurrence oriented topic models' applicability. Second, real time message streams make traditional discretized...
Due to similar meteorological conditions, neighboring wind farm outputs are correlated, which usually results in amplified uncertainty. However, wind power is assumed to be independent in traditional transmission planning, causing potential risks in wind integration and power system security. This paper initially proposes a transmission planning approach considering correlation of wind power. The...
In this paper, we propose two novel Dynamic Active Learning (DAL) methods with the aim of ultimately reducing the costly human labelling work for subjective tasks such as speech emotion recognition. Compared to conventional Active Learning (AL) algorithms, the proposed DAL approaches employ a highly efficient adaptive query strategy that minimises the number of annotations through three advancements...
Understanding the characteristics of spectrum utilization is essential in providing guidelines for resource allocation. In this paper, a detailed measurement analysis of spectrum efficiency is performed, with data collected from tens of thousands of base stations during fifteen months. We examine the characteristics of radio resource margins (RM) extensively, including its temporal skewness, diurnal...
Traffic light recognition is a key technology for intelligent vehicles and Advanced Driver Assistance Systems (ADAS). This paper proposes a multi-feature fusion based real-time traffic light recognition algorithm for intelligent vehicles. In the region of interest determined by the vanishing line, technologies including color segmentation, blob detection, and structural feature extraction are employed...
To avoid collisions of calling from users of the same dell group, the technique of listen-before-transmit (LBT) is employed in in the Third Generation High Frequency Automatic Link Establishment. In this paper a signal detection method based on the transformed sample auto-correlation matrix is proposed for the LBT. This method makes use of the property that the signal is usually pertinent, while the...
This paper first proposes the marine economic comprehensive competitiveness in coastal regions in China, and then evaluates the marine economic comprehensive competitiveness based on factor analysis and cluster analysis. The results illustrate that the factor scores of Guangdong, Shandong, Shanghai, Zhejiang, Liaoning and Fujian are much greater than 0, indicating the competitiveness of the coastal...
According to the application of secondary water-supply system has been used more and more, the problem of water pollution in secondary water-supply system turns serious. Research was made on distributing rules of bacteria in secondary water-supply system; the variety and correlativity of water quality index were analyzed. Index that reflecting total bacteria number in water-supply system was indicated;...
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