图像描述是对指定图片进行自然语言描述,在现阶段的研究中大多是基于编码器-解码器结构进行的,为提升图像描述的精确度还可以引入注意力机制,使用模型在编码器-解码器架构基础上,同时引入了一种基于AoA(Attention on Attention)的新的...图像描述是对指定图片进行自然语言描述,在现阶段的研究中大多是基于编码器-解码器结构进行的,为提升图像描述的精确度还可以引入注意力机制,使用模型在编码器-解码器架构基础上,同时引入了一种基于AoA(Attention on Attention)的新的改进注意力机制,使注意力机制轻量化的同时将注意力结果和查询结果的相关性进行确定,来增强图片与词之间的相关性,最后输出自然语言。在公共数据集MSCOCO和Flickr30k作对比验证,通过实验结果与传统一般的注意力机制模型评价结果相比,在进行图像文本描述时使用的改进注意力机制模型,加快了整体模型的收敛速率,提高了相关评价指标并增强了模型性能,有显著的优越性。展开更多
Based on the modified Su-Schrieffer-Heeger Harniltonian and by adding the interchain hopping term,we consider the effect of interchain coupling on quantum lattice fluctuation in trans-polyacetylene.It has been found t...Based on the modified Su-Schrieffer-Heeger Harniltonian and by adding the interchain hopping term,we consider the effect of interchain coupling on quantum lattice fluctuation in trans-polyacetylene.It has been found that the interchain coupling does not always weaken quantum lattice fluctuation.After overcoming a barrier of 1 eV or so,the quantum lattice fluctuation can induce a transition of interchain order.The physical meaning of these features is discussed.展开更多
Because a brain consists of tremendous neuronal networks with different neuron numbers ranging from tens to tens of thousands, we study the coherence resonance due to ion channel noises in globally coupled neuronal ne...Because a brain consists of tremendous neuronal networks with different neuron numbers ranging from tens to tens of thousands, we study the coherence resonance due to ion channel noises in globally coupled neuronal networks with different neuron numbers. We confirm that for all neuronal networks with different neuron numbers there exist the array enhanced coherence resonance and the optimal synaptic conductance to cause the maximal spiking coherence. Furthermoremore, the enhancement effects of coupling on spiking coherence and on optimal synaptic conductance are almost the same, regardless of the neuron numbers in the neuronal networks. Therefore for all the neuronal networks with different neuron numbers in the brain, relative weak synaptic conductance （0.1 mS/cm2） is sufficient to induce the maximal spiking coherence and the best sub-threshold signal encoding.展开更多
文摘图像描述是对指定图片进行自然语言描述,在现阶段的研究中大多是基于编码器-解码器结构进行的,为提升图像描述的精确度还可以引入注意力机制,使用模型在编码器-解码器架构基础上,同时引入了一种基于AoA(Attention on Attention)的新的改进注意力机制,使注意力机制轻量化的同时将注意力结果和查询结果的相关性进行确定,来增强图片与词之间的相关性,最后输出自然语言。在公共数据集MSCOCO和Flickr30k作对比验证,通过实验结果与传统一般的注意力机制模型评价结果相比,在进行图像文本描述时使用的改进注意力机制模型,加快了整体模型的收敛速率,提高了相关评价指标并增强了模型性能,有显著的优越性。
基金Supported by the Shanghai Qi-Ming-Xing Plan for Young Scientiststhe National Natural Science Foundation of China under Grant No.19571012.
文摘Based on the modified Su-Schrieffer-Heeger Harniltonian and by adding the interchain hopping term,we consider the effect of interchain coupling on quantum lattice fluctuation in trans-polyacetylene.It has been found that the interchain coupling does not always weaken quantum lattice fluctuation.After overcoming a barrier of 1 eV or so,the quantum lattice fluctuation can induce a transition of interchain order.The physical meaning of these features is discussed.
基金supported by the National Natural Science Foundation of China (Grant No.11065003)the Natural Science Foundation of Guangxi Zhuang Autonoomous Region,China (Grant No.2011GXNSFA018129)the Research Funding of Education Department of Guangxi Zhuang Autonoomous Region of China (Grant No.201012MS026)
文摘Because a brain consists of tremendous neuronal networks with different neuron numbers ranging from tens to tens of thousands, we study the coherence resonance due to ion channel noises in globally coupled neuronal networks with different neuron numbers. We confirm that for all neuronal networks with different neuron numbers there exist the array enhanced coherence resonance and the optimal synaptic conductance to cause the maximal spiking coherence. Furthermoremore, the enhancement effects of coupling on spiking coherence and on optimal synaptic conductance are almost the same, regardless of the neuron numbers in the neuronal networks. Therefore for all the neuronal networks with different neuron numbers in the brain, relative weak synaptic conductance （0.1 mS/cm2） is sufficient to induce the maximal spiking coherence and the best sub-threshold signal encoding.
