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
The enol contents and equilibrium constants of the ketcrenol tautomerism of ethyl acetoaretate were determined in various solvents using UV spectroscopy. It was found that in supercritical CO2 the enol content decreas...The enol contents and equilibrium constants of the ketcrenol tautomerism of ethyl acetoaretate were determined in various solvents using UV spectroscopy. It was found that in supercritical CO2 the enol content decreases dramatically in the presence of 0.047mol.L-1 ethanol.In liquid cyclohexane, however, the effect of the same amount of ethanol on enol content is not detectable. The strong cosolvent effect in SC CO2 results from the clustering of the cosolvent around the solute.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。
文摘The enol contents and equilibrium constants of the ketcrenol tautomerism of ethyl acetoaretate were determined in various solvents using UV spectroscopy. It was found that in supercritical CO2 the enol content decreases dramatically in the presence of 0.047mol.L-1 ethanol.In liquid cyclohexane, however, the effect of the same amount of ethanol on enol content is not detectable. The strong cosolvent effect in SC CO2 results from the clustering of the cosolvent around the solute.