模型无意识的结构转移学习用于跨领域的自主活动识别
Parastoo Alinia1, Asiful Arefeen2, Zhila Esna Ashari1
1School of Electrical Engineering and Computer Science, Washington State University, Pullman, WA 99164, USA.
Sensors (Basel, Switzerland)
|July 29, 2023
概括
ActiLabel通过学习传感器数据域之间的结构相似性来增强跨设备活动识别. 该框架可显著提高不同传感器和用户群体的模型性能.
科学领域:
- 计算机科学 计算机科学
- 机器学习 机器学习
- 人与计算机的交互
背景情况:
- 活动识别模型在物联网时代与各种智能设备作斗争.
- 跨领域的适应是具有挑战性的,特别是在不同的传感器模式和功能级别之间.
研究的目的:
- 提出ActiLabel,一个跨领域活动识别框架.
- 解决当前模型在适应新设备和传感器类型方面的局限性.
主要方法:
- 开发了ActiLabel,一个使用依赖图表来建模结构相似性的组合框架.
- 在结构层面上学习了源域和目标域之间的最佳映射.
- 利用图形模型从低级信号中抽象活动模式.
主要成果:
- 与最先进的转移学习和深度学习方法相比,ActiLabel表现优越.
- 取得了显著的平均F1得分改善:36.3% (跨模式),32.7% (跨位置) 和9.1% (跨主题).
- 通过对三大可穿戴传感器数据集的广泛实验进行验证.
结论:
- 在活动识别方面,ActiLabel有效地克服了跨领域的适应挑战.
- 依赖图方法提供了一种强大的方法,用于学习跨多种传感器数据的结构相似性.
- ActiLabel为强大且可适应的活动识别系统提供了一个有前途的解决方案.
相关概念视频
Observational Learning
210
Albert Bandura's observational learning, also known as imitation or modeling, occurs when a person observes and imitates another's behavior. It is a quicker process than operant conditioning. A well-known example is the Bobo doll study, where children who saw an adult acting aggressively towards the doll were more likely to act aggressively when left alone, compared to those who observed a nonaggressive adult. Many psychologists view observational learning as a form of latent learning...
210
Associative Learning
444
Associative learning is a fundamental concept in behavioral psychology, wherein a connection is established between two stimuli or events, leading to a learned response. This process is critical in understanding how behaviors are acquired and modified. Conditioning, the mechanism through which associations are formed, can be divided into two main types: classical conditioning and operant conditioning, each elucidating different aspects of associative learning.
Classical conditioning, also known...
Classical conditioning, also known...
444
State Space to Transfer Function
236
The conversion of state-space representation to a transfer function is a fundamental process in system analysis. It provides a method for transitioning from a time-domain description to a frequency-domain representation, which is crucial for simplifying the analysis and design of control systems.
The transformation process begins with the state-space representation, characterized by the state equation and the output equation. These equations are typically represented as:
The transformation process begins with the state-space representation, characterized by the state equation and the output equation. These equations are typically represented as:
236
Structural Classification of Joints
3.5K
Joints, also known as articulations, are classified based on their structural characteristics, i.e., based on whether the articulating surfaces of the adjacent bones are directly connected by fibrous connective tissue or cartilage, or whether the articulating surfaces contact each other within a fluid-filled joint cavity. These differences serve to divide the joints of the body into three structural classifications.
A fibrous joint is where the adjacent bones are united by fibrous connective...
A fibrous joint is where the adjacent bones are united by fibrous connective...
3.5K
Improving Translational Accuracy
2.6K
2.6K
Transfer Function to State Space
298
State-space representation is a powerful tool for simulating physical systems on digital computers, necessitating the conversion of the transfer function into state-space form. Consider an nth-order linear differential equation with constant coefficients, like those encountered in an RLC circuit. The state variables are selected as the output and its n−1 derivatives. Differentiating these variables and substituting them back into the original equation produces the state equations.
In an...
In an...
298


