相关实验视频
Updated: May 24, 2025

05:37
An R-Based Landscape Validation of a Competing Risk Model
Published on: September 16, 2022
2.0K
优先选择性意识图形神经网络用于防止银行间信用评级攻击
概括
本研究引入了一种新型图形神经网络模型,用于保护银行间信用评级免受数据操纵攻击. 优选选择意识图神经网络 (PSAGNN) 模型通过识别和减轻中毒尝试来提高评级准确性.
科学领域:
- 金融建模金融建模
- 网络安全 网络安全
- 机器学习是机器学习.
背景情况:
- 准确的银行信用评级对于金融稳定和经济增长至关重要.
- 现有的评级模型容易受到故意的数据操纵 (中毒攻击) 的影响.
- 攻击可能涉及操纵的功能或网络结构,使信用评估复杂化.
研究的目的:
- 提出一种新的方法,即偏好的选择性意识图形神经网络 (PSAGNN) 模型.
- 保护银行间信用评级系统免受特征和结构性非目标中毒攻击.
- 提高信用评级评估的可靠性和准确性.
主要方法:
- 开发了一种带有偏差扰乱的分阶段优化方法.
- 探索银行间偏好和网络无尺度属性,以适应数据优先级.
- 通过适应性优先考虑中毒训练数据来模拟一个干净的图表.
- 在对抗功能上实施加权惩罚,以区分攻击者.
主要成果:
- 该PSAGNN模型有效地防御特征和结构中毒攻击.
- 与最先进的基线方法相比,证明了更高的性能.
- 通过对新收集的银行间季度数据集和案例研究进行广泛的实验来验证.
结论:
- 拟议的PSAGNN模型显著提高了银行间信用评级系统的弹性.
- 这种方法提供了一个强大的解决方案,可以缓解复杂的数据中毒攻击.
- 这项工作通过更可靠的信用评估,为更健康的金融环境做出了贡献.
相关概念视频
Protein Networks
3.9K
An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
3.9K
Protein-protein Interfaces
12.4K
Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
12.4K
Heart Failure Drugs: Inhibitors of Renin-Angiotensin System
363
The activation of the sympathetic nervous system and the renin-angiotensin-aldosterone system (RAAS) contributes to cardiac remodeling, and inhibiting the RAAS is a pharmacological target in heart failure management. As a result, neurohumoral modulation is a crucial treatment principle for managing heart failure. This approach involves using medications like ACE inhibitors (ACEIs), angiotensin receptor blockers (ARBs), β-blockers, mineralocorticoid receptor antagonists (MRAs), and neutral...
363

