全球-本地图表关注比特币反洗钱检测的周期性伪标签
Meng Li1,2, Lu Jia3, XinQiao Su3
1College of Mathematics and Statistic, Hebei University of Economics and Business, Shijiazhuang, 050062, China. mli269-c@my.cityu.edu.hk.
Scientific reports
|July 2, 2025
概括
这项研究引入了变压器增强的图表注意网络 (TFGAT),以改善比特币交易中的洗钱检测. 我们的方法增强了信息提取,并有效地利用有限的数据,优于现有的反洗钱模型.
科学领域:
- 网络安全 网络安全
- 图形神经网络的神经网络
- 区块链分析 区块链分析
背景情况:
- 由于隐藏的非法交易,比特币洗钱存在复杂的挑战.
- 现有的图形卷积网络 (GCN) 方法在动态节点权重和全球信息提取方面遇到了困难.
- 有限的标记数据和数据注释的成本阻碍了反洗钱 (AML) 模型的有效性.
研究的目的:
- 开发一种先进的模型来检测比特币网络中的洗钱行为.
- 解决当前基于GCN的反洗钱方法在处理复杂交易模式方面的局限性.
- 为了有效地利用有限的标记数据进行强大的模型培训.
主要方法:
- 提出了一个改进变压器的图形注意力网络 (TFGAT),结合了全球-本地注意力机制 (GLATM).
- 利用变压器进行全球信息提取,并专注于本地节点信息.
- 引入了深度循环伪标签更新机制 (DCPLU),以增强数据分布和模型稳定性,而不依赖于多重或欧几里德假设.
主要成果:
- 与现有方法相比,TFGAT模型在各种指标上表现出优异的表现.
- 该GLATM有效地从比特币交易图表中提取全球和本地信息.
- 在有限的标记数据下,DCPLU机制提高了模型的稳定性和性能.
结论:
- 拟议的TFGAT模型与GLATM和DCPLU在检测比特币洗钱方面取得了重大进展.
- 该方法有效地解决了与动态权重,全球信息提取和数据稀缺性相关的挑战.
- 这种方法为区块链网络中的反洗钱提供了更强大,更有效的解决方案.
相关概念视频
01:10Detection of Black Holes
2.3K
Although black holes were theoretically postulated in the 1920s, they remained outside the domain of observational astronomy until the 1970s.
Their closest cousins are neutron stars, which are composed almost entirely of neutrons packed against each other, making them extremely dense. A neutron star has the same mass as the Sun but its diameter is only a few kilometers. Therefore, the escape velocity from their surface is close to the speed of light.
Not until the 1960s, when the first neutron...
Their closest cousins are neutron stars, which are composed almost entirely of neutrons packed against each other, making them extremely dense. A neutron star has the same mass as the Sun but its diameter is only a few kilometers. Therefore, the escape velocity from their surface is close to the speed of light.
Not until the 1960s, when the first neutron...
2.3K
03:31Labeling DNA Probes
8.4K
DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
8.4K
01:28Global Regulatory Systems
82
Global regulatory systems in bacteria enable rapid and coordinated responses to environmental changes by integrating sensory inputs with gene expression, ensuring efficient adaptation to fluctuating conditions. Key global regulatory mechanisms include regulons, two-component systems, sigma factors, and secondary messengers.Regulons and Global RegulatorsA regulon is a collection of genes and operons controlled by a common global regulator. These regulators enable bacteria to prioritize resource...
82
01:05Difference from Background: Limit of Detection
7.1K
The limit of detection (LOD) is the smallest amount of analyte that can be distinguished from the background noise. The LOD value corresponds to the concentration at which the analyte signal is three times larger than the standard deviation of the blank signal. Below this value, the analyte signal cannot be differentiated from the background noise. It is calculated by dividing the calibration slope by 3 times the standard deviation of the blank signals.
The LOD indicates the presence or absence...
The LOD indicates the presence or absence...
7.1K
01:09GPCRs Regulate Adenylyl Cylase Activity
6.0K
Some GPCRs transmit signals through adenylyl cyclase (AC), a transmembrane enzyme. AC helps synthesize second messenger cyclic adenosine monophosphate (cAMP). AC catalyzes cyclization reaction and converts ATP to cAMP by releasing a pyrophosphate. The pyrophosphate is further hydrolyzed to phosphate by the enzyme pyrophosphatase, which drives cAMP synthesis to completion. However, cAMP is rapidly degraded to 5′ AMP by the enzymes phosphodiesterase (PDE), preventing overstimulation of...
6.0K
01:08Hückel's Rule Diagram of π MOs: Frost Circle
4.8K
The Frost circle or the inscribed polygon method is a graphical method for determining the relative energies of π molecular orbitals (MOs) for planar, fully conjugated, and monocyclic compounds. This method was first described by A. A. Frost and Boris Musulin in 1953.
A Frost circle is constructed by drawing a polygon whose number of edges is equal to the number of carbons of the given cyclic system, with one of the vertices pointing down. Then, a circle is drawn enclosing the polygon so...
A Frost circle is constructed by drawing a polygon whose number of edges is equal to the number of carbons of the given cyclic system, with one of the vertices pointing down. Then, a circle is drawn enclosing the polygon so...
4.8K