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人体经络系统中的三维场景传输策略研究 被引量:4
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作者 郑旭东 陈国栋 余轮 《计算机工程与应用》 CSCD 北大核心 2010年第10期51-53,56,共4页
网络环境中的三维交互技术应用广泛,但目前存在数据量大和带宽有限的矛盾,无法满足交互的实时性要求。以用户兴趣和网络状态为出发点,在三维场景传输策略中引入上下文感知计算,实现系统对用户意图的自动感知和相关数据的预传输,充分利... 网络环境中的三维交互技术应用广泛,但目前存在数据量大和带宽有限的矛盾,无法满足交互的实时性要求。以用户兴趣和网络状态为出发点,在三维场景传输策略中引入上下文感知计算,实现系统对用户意图的自动感知和相关数据的预传输,充分利用网络的空闲带宽,达到缩短响应时间的目的,并在人体经络系统中的验证了传输策略的有效性。 展开更多
关键词 上下文感知计算 人体经络系 用户兴趣
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A hybrid neural network system for prediction and recognition of promoter regions in human genome 被引量:1
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作者 陈传波 李滔 《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 SCIE CAS CSCD 2005年第5期401-407,共7页
This paper proposes a high specificity and sensitivity algorithm called PromPredictor for recognizing promoter regions in the human genome. PromPredictor extracts compositional features and CpG islands information fro... This paper proposes a high specificity and sensitivity algorithm called PromPredictor for recognizing promoter regions in the human genome. PromPredictor extracts compositional features and CpG islands information from genomic sequence,feeding these features as input for a hybrid neural network system (HNN) and then applies the HNN for prediction. It combines a novel promoter recognition model, coding theory, feature selection and dimensionality reduction with machine learning algorithm.Evaluation on Human chromosome 22 was ~66% in sensitivity and ~48% in specificity. Comparison with two other systems revealed that our method had superior sensitivity and specificity in predicting promoter regions. PromPredictor is written in MATLAB and requires Matlab to run. PromPredictor is freely available at http://www.whtelecom.com/Prompredictor.htm. 展开更多
关键词 Hybrid neural network Promoter prediction Compositional features CpG islands
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