PGSFormer:基于对渐进图卷积网络与子序列变压器的联合优化进行的流量预测
1School of Big Data & Information Engineering, Guiyang Institute of Humanities and Technology, Guiyang, 550025, China. chenlinlong1009@yeah.net.
Scientific reports
|February 4, 2026
概括
本研究介绍了PGSFormer,这是一个用于流量预测的新型模型. 它通过动态更新网络图表来增强实时流量预测,大大提高了对现有方法的准确性.
科学领域:
- 人工智能的人工智能
- 计算机科学 计算机科学
- 运输工程 运输工程
背景情况:
- 由于时空相关性和网络结构,流量预测是复杂的.
- 静态图形模型与实时流量动态作斗争.
- 现有的自适应方法在测试阶段无法更新图表.
研究的目的:
- 为了提出一种新的流量预测模型,PGSFormer.
- 解决现有实时交通预测方法的局限性.
- 通过动态调整图形结构来提高预测准确性.
主要方法:
- 开发了渐进式图形卷积网络 (PGSFormer),结合了图形卷积和后续变压器.
- 基于节点趋势相似性构建了一个渐进的邻近矩阵.
- 集成的扩张因果卷积和封闭的循环单元用于时间特征提取.
- 在实时边缘权重更新中使用参数化等号相似性.
- 增强的变压器与面具重建用于上下文感知表示和1D CNNs用于长期趋势.
主要成果:
- 与现有的基线模型相比,PGSFormer表现出更高的性能.
- 该模型在真实数据集上的流量预测准确度方面取得了显著的改进.
- 实时的动态图表更新对于预测准确性至关重要.
结论:
- PGSFormer有效地捕捉了交通网络中复杂的时空依赖关系.
- 拟议的模型在实时流量预测方面取得了重大进展.
- 动态图形适应对于处理交通数据的突然变化至关重要.
相关概念视频
Signal Flow Graphs
664
Signal-flow graphs offer a streamlined and intuitive approach to representing control systems, providing an alternative to traditional block diagrams. These graphs use branches to symbolize systems and nodes to represent signals, effectively illustrating the relationships and interactions within the system.
In a signal-flow graph, branches denote the system's transfer functions, while nodes represent the signals. The direction of signal flow is indicated by arrows, with the corresponding...
In a signal-flow graph, branches denote the system's transfer functions, while nodes represent the signals. The direction of signal flow is indicated by arrows, with the corresponding...
664
Convolution Properties II
588
The important convolution properties include width, area, differentiation, and integration properties.
The width property indicates that if the durations of input signals are T1 and T2, then the width of the output response equals the sum of both durations, irrespective of the shapes of the two functions. For instance, convolving two rectangular pulses with durations of 2 seconds and 1 second results in a function with a width of 3 seconds.
The area property asserts that the area under the...
The width property indicates that if the durations of input signals are T1 and T2, then the width of the output response equals the sum of both durations, irrespective of the shapes of the two functions. For instance, convolving two rectangular pulses with durations of 2 seconds and 1 second results in a function with a width of 3 seconds.
The area property asserts that the area under the...
588
Protein Networks
4.6K
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,...
4.6K
Introduction to Membrane Traffic
9.6K
The ER, Golgi apparatus, endosomes, and lysosomes work in tandem to modify, sort, and package proteins and lipids. An integrated membrane trafficking network facilitates the back and forth shuttling of molecules within different organelles in the same cell or across the cell membrane.
The transport of soluble and membrane proteins is mediated by transport vesicles that collect cargo from one cellular compartment and deliver it to another by fusing with the target organelle membrane. The Rab...
The transport of soluble and membrane proteins is mediated by transport vesicles that collect cargo from one cellular compartment and deliver it to another by fusing with the target organelle membrane. The Rab...
9.6K
Convolution Properties I
609
Convolution computations can be simplified by utilizing their inherent properties.
The commutative property reveals that the input and the impulse response of an LTI (Linear Time-Invariant) system can be interchanged without affecting the output:
The commutative property reveals that the input and the impulse response of an LTI (Linear Time-Invariant) system can be interchanged without affecting the output:
609
Structural Joints: Synovial Joints
7.0K
Synovial joints are the most common type of joint in the body. A key structural characteristic for a synovial joint is the presence of a joint cavity. This fluid-filled space is where the articulating surfaces of the bones contact each other. Also, unlike fibrous or cartilaginous joints, the articulating bone surfaces at a synovial joint are not directly connected to each other with fibrous connective tissue or cartilage. This gives the bones of a synovial joint the ability to move smoothly...
7.0K


