阿尔茨海默氏病（AD）是痴呆症的最常见形式，由于痴呆症的多因素病因，通常难以诊断。关于基于神经成像的基于神经成像的深度神经网络（DNN）的著作表明，结构磁共振图像（SMRI）和氟脱氧葡萄糖正电子发射层析成像（FDG-PET）可提高健康对照和受试者的研究人群的精度。与广告。但是，这一结果与既定的临床知识冲突，即FDG-PET比SMRI更好地捕获AD特定的病理。因此，我们提出了一个框架，用于对基于FDG-PET和SMRI进行多模式DNN的系统评估，并重新评估单模式DNN和多模式DNN，用于二进制健康与AD，以及三向健康/轻度的健康/轻度认知障碍/广告分类。我们的实验表明，使用FDG-PET的单模式网络的性能优于MRI（准确性0.91 vs 0.87），并且在组合时不会显示出改进。这符合有关AD生物标志物的既定临床知识，但提出了有关多模式DNN的真正好处的问题。我们认为，未来关于多模式融合的工作应系统地评估我们提出的评估框架后的个人模式的贡献。最后，我们鼓励社区超越健康与AD分类，并专注于痴呆症的鉴别诊断，在这种诊断中，在这种诊断中，融合了多模式图像信息与临床需求相符。

The costs and impacts of government corruption range from impairing a country's economic growth to affecting its citizens' well-being and safety. Public contracting between government dependencies and private sector instances, referred to as public procurement, is a fertile land of opportunity for corrupt practices, generating substantial monetary losses worldwide. Thus, identifying and deterring corrupt activities between the government and the private sector is paramount. However, due to several factors, corruption in public procurement is challenging to identify and track, leading to corrupt practices going unnoticed. This paper proposes a machine learning model based on an ensemble of random forest classifiers, which we call hyper-forest, to identify and predict corrupt contracts in M\'exico's public procurement data. This method's results correctly detect most of the corrupt and non-corrupt contracts evaluated in the dataset. Furthermore, we found that the most critical predictors considered in the model are those related to the relationship between buyers and suppliers rather than those related to features of individual contracts. Also, the method proposed here is general enough to be trained with data from other countries. Overall, our work presents a tool that can help in the decision-making process to identify, predict and analyze corruption in public procurement contracts.

我们介绍了StreamNet，这是一种自动编码器体系结构，用于分析大量白质流线的高度异质几何形状。该提出的框架利用了Wasserstein-1度量的几何形状赋值特性，以实现整个流线束的直接编码和重建。我们表明，该模型不仅可以准确捕获人群中流线的分布结构，而且还能够在真实和合成流线之间实现出色的重建性能。使用最新的ART捆绑包比较度量标准，对40个健康对照的T1加权扩散成像产生的白质流线评估了实验模型性能。