基于注意力机制的本地空间和时间关系发现模型用于交通预测
1Shanghai Key Laboratory of Navigation and Location-Based Services, Shanghai JiaoTong University, Shanghai, China.
概括
这项研究引入了一种基于注意力的新型模型,用于准确的交通预测. 该模型通过捕捉复杂的时空交通动态并提供可解释的预测来增强智能交通系统.
科学领域:
- 智能运输系统 (ITS) 是一种智能运输系统.
- 深度学习 (Deep Learning) 是一种深度学习.
- 交通预测 交通预测
背景情况:
- 准确的流量预测对ITS至关重要,但现有的深度学习模型在与异步的时空相关性和历史数据影响方面扎.
- 目前的方法在交通网络中的显式时空关系方面缺乏可解释性.
研究的目的:
- 为了提高智能运输系统中的交通预测准确度.
- 开发一个模型,在交通网络中提取全面和可解释的时空相关性.
- 解决模拟异步依赖和历史数据影响的局限性.
主要方法:
- 提出了一种新的基于注意力的局部空间和时间关系发现 (ALSTRD) 模型.
- 实现特征表示学习,用于隐藏的交通信息.
- 利用局部注意力机制来处理异步的历史数据依赖.
- 采用注意力网络和皮尔森相关系数进行详细的影响提取.
主要成果:
- 与基线方法相比,ALSTRD模型在预测准确度方面取得了显著的改进.
- 在提取历史交通数据中的细粒度相关性和动态关联方面表现出有效性.
- 展示了阐明时空相关性的能力提高,提供更强大的解释.
结论:
- 拟议的ALSTRD模型通过有效地建模复杂的时空动态,提供卓越的交通预测准确性.
- 注意力机制和皮尔森相关系数的整合提高了模型的可解释性.
- 这种方法通过更准确和可解释的交通预测来推进智能交通系统.
相关概念视频
01:25The Anchoring-and-Adjustment Heuristic
7.2K
In order to make good decisions, we use our knowledge and our reasoning. Often, this knowledge and reasoning is sound and solid. However, sometimes, we are swayed by biases or by others manipulating a situation. For example, let’s say you and three friends wanted to rent a house and had a combined target budget of $1,600. The realtor shows you only very run-down houses for $1,600 and then shows you a very nice house for $2,000. Might you ask each person to pay more in rent to get the...
7.2K
01:21Manipulation and Analysis
23
GIS manipulation and analysis functions are vital for decision-making and planning. These activities range from data retrieval tasks, such as selecting information based on specific criteria, to advanced analytical techniques that address complex spatial problems.One critical GIS analysis method is overlaying, which combines multiple data layers to examine impacts. For example, overlaying a river-dammed lake boundary with road networks can identify affected infrastructure. Another common...
23
01:25Selected Data About Geographic Locations
27
Geographic Information Systems (GIS) rely on two core types of data: spatial data and attribute data.Spatial DataSpatial data defines the physical location of features within a coordinate system, typically expressed in terms of latitude and longitude. It provides precise positioning for elements like roads, rivers, or buildings.Attribute DataAttribute data complements spatial data by adding descriptive information about these features. For example, a road's spatial data includes its start and...
27
02:01Factorial Design
13.0K
Factorial Analysis is an experimental design that applies Analysis of Variance (ANOVA) statistical procedures to examine a change in a dependent variable due to more than one independent variable, also known as factors. Changes in worker productivity can be reasoned, for example, to be influenced by salary and other conditions, such as skill level. One way to test this hypothesis is by categorizing salary into three levels (low, moderate, and high) and skills sets into two levels (entry level...
13.0K
01:41Social Traps
22.3K
Social traps are negative situations where people get caught in a direction or relationship that later proves to be unpleasant, with no easy way to back out of or avoid. The concept was orignally introduced by John Platt who applied psychology to Garrett Hardin's "Tragedy of the Commons", where in New England herd owners could let their cattle graze in the common ground. This situation seems like a good idea, but an individual could have an advantage. If they owned...
22.3K
01:42Schemas
11.6K
A schema is a mental construct consisting of a cluster or collection of related concepts (Bartlett, 1932). There are many different types of schemata, and they all have one thing in common: schemata are a method of organizing information that allows the brain to work more efficiently. When a schema is activated, the brain makes immediate assumptions about the person or object being observed.
11.6K