In this study, we present a novel clustering-based collaborative filtering (CF) method for recommender systems. Clustering-based CF methods can effectively deal with data sparsity and scalability problems. However, most of them are applied to single representation space, which might not characterize complex user–item interactions well. We argue that the should be observed from multiple views ch...

Transformer models are now widely used for speech processing tasks due to their powerful sequence modeling capabilities. Previous work determined an efficient way model speaker embeddings using the by combining transformers with convolutional networks. However, traditional global self-attention mechanisms lack ability capture local information. To alleviate these problems, we proposed a novel g...

目的 干涉相位去噪是合成孔径雷达干涉测量(interferometric synthetic aperture radar,InSAR)技术中的关键环节,其效果对测量精度具有重要影响。针对现有的干涉相位去噪方法大多关注局部特征以及在特征提取方面的局限性,同时为了平衡去噪和结构保持两者之间的关系,提出了一种结合全局上下文与融合注意力的相位去噪网络 GCFA-PDNet (global context and fused attention phase denoising network)。方法 将干涉相位分离为实部和虚部依次输入到网络,先从噪声相位中提取浅层特征,再将其映射到由全局上下文提取模块和融合注意力模块组成的特征增强模块,最后通过全局残差学习生成去噪图像。全局上下文提取模块能提取全局上下文信息,具有非局部方法的优势;融合注意力模块既强调关键特征,又能高效提取隐藏在复杂背景中的噪...

the commentator suggests that it is necessary to extend the classical connotation of  global city which focuses much on the functions of controlling global capital and production. global city should also include the dimensions of the leading role and capacity on health improvements and well-being promotion. the commentator agrees with authors’ assessments about shanghai’s substantial progress o...

Noroviruses (NoVs), an important pathogenic agent of foodborne illness, lead to acute and chronic gastroenteritis in humans of all ages and to travelers’ diarrhea. Many genotypes exist in nature; GII.4 is widely known as the most predominant. Outbreaks mostly occur in semi-closed settings. Although the disease is self-limited to person, many cases have resulted in death, which has raised more c...

objectives : the aim of this randomized clinical trial was to assess the efficacy of memantine versus methylphenidate in the treatment of children with attention deficit hyperactivity disorder. method : forty participants (34 boys and 6 girls) aged 6-11 who were diagnosed with attention deficit hyperactivity disorder based on (dsm-iv-tr) criteria were selected for this study. the participants w...

There were once again high expectations that a major global health event - the Ebola virus outbreak of 2014-2015 - would trigger meaningfully World Health Organization (WHO) reform and strengthen global health governance (GHG). Rather than a “turning point,” however, the global community has gone back to business as usual. This has occurred against a backdrop of worldwide political turmoil, cha...