动态时空记忆增强网络用于交通预测
Huibing Zhang1, Qianxin Xie1, Zhaoyu Shou2
1Guangxi Key Laboratory of Trusted Software, Guilin University of Electronic Technology, Guilin 541004, China.
Sensors (Basel, Switzerland)
|October 26, 2024
概括
我们开发了一个动态时空记忆增强网络 (DSTMAN),用于更智能的流量预测. 该模型通过捕捉复杂的空间和时间交通模式,显著提高了准确性.
科学领域:
- 人工智能的人工智能
- 运输工程 运输工程
- 数据科学数据科学数据科学
背景情况:
- 智慧城市的发展在很大程度上依赖于准确的交通流量预测.
- 现有的模型与复杂的时空动态,层次的时间特征和空间异质性作斗争.
- 有效的交通管理需要先进的模型来捕捉这些细微差别.
研究的目的:
- 引入一个新的模型,DSTMAN,用于增强流量预测.
- 解决捕捉动态时空背景和空间异质性的局限性.
- 提高交通流量预测的准确性和效率.
主要方法:
- 开发了三种时空嵌入,以捕捉动态背景和编码时间/空间特征.
- 集成嵌入到多尺度块中,用于分层的时空依赖提取.
- 引入了用于自适应邻近图的元记忆节点银行和学习空间异质性的二次记忆机制.
主要成果:
- 在公共数据集 (METR-LA,PEMS-BAY) 上,DSTMAN的表现优于MTGNN,DCRNN和AGCRN等基准模型.
- 实现了显著的平均绝对误差 (MAE) 减少:4%与MTGNN相比,6.9%与DCRNN相比,以及5.8%与METR-LA上的AGCRN相比.
- 在管理时空相关性和空间异质性方面表现出卓越的表现.
结论:
- 对于复杂的流量预测任务,DSTMAN提供了强大的解决方案.
- 该模型的新架构有效地捕捉了复杂的时空关系.
- DSTMAN代表了智能交通系统和智慧城市倡议的重大进步.
相关概念视频
01:20Traumatic Memory
74
Emotionally traumatic events often lead to memories that are exceptionally vivid and enduring, sometimes persisting with remarkable clarity throughout an individual's life. A classic example of this phenomenon is a person who survives a car accident. Even years later, they may recall every detail of the event with startling accuracy — the screeching of the tires, the jarring impact, and the acrid smell of burning rubber. Such vividness contrasts sharply with how an individual...
74
01:23System of Memory
5.1K
Memory is categorized into three major systems: sensory memory, short-term memory (STM), and long-term memory (LTM). These systems differ in their capacity and the duration for which they can hold information. Sensory memory captures raw sensory input from the environment, holding it for just a few seconds or less. For example, on hearing a brief, loud sound, like a car horn honking, the sound seems to linger in the mind for a moment even after it stops. This is an instance of sensory memory...
5.1K
01:24Working Memory
137
Working memory refers to a combination of components, including short-term memory and attention, that allow an individual to hold information temporarily as we perform cognitive tasks. It is an essential cognitive function that enables the execution of complex tasks such as problem-solving, comprehension, and reasoning. Unlike short-term memory, which simply involves the storage of information for a brief period, working memory involves the active manipulation and processing of this...
137
01:23Storage
71
A schema is a mental framework that helps individuals organize and interpret information. Schemata, formed from previous experiences, influence how we process new information: how we encode it, the inferences we make, and how we retrieve it. For instance, a schema for what a typical classroom looks like might include desks, a teacher's desk, a whiteboard, and students in such an environment. This expectation helps us quickly understand and navigate new classrooms without needing to analyze...
71