一种基于层次的学习方法,用于多动作意图识别
David Hollinger1, Ryan S Pollard1, Mark C Schall2
1Department of Mechanical Engineering, Auburn University, Auburn, AL 36849, USA.
Sensors (Basel, Switzerland)
|December 17, 2024
概括
使用可穿戴传感器预测未来的关节角度是通过使用在各种人体运动上训练的动作通用模型来改进的,优于等级方法,以更好地识别运动意图.
科学领域:
- 生物力学和人类运动分析
- 可穿戴式传感器技术
- 机器学习用于预测建模.
背景情况:
- 可穿戴惯性测量单位 (IMU) 越来越多地用于人类运动预测.
- 当前的方法往往集中在行动级或关节级的运动预测上.
- 语境信息对于全面的运动意图识别至关重要.
研究的目的:
- 开发和评估一种新的分层方法,将行动级分类和关节级回归相结合,用于预测未来的关节角度.
- 为了比较分层方法的性能与联合级别的行动通用模型.
- 评估不同机器学习模型 (KNN,BiLSTM,TCN,随机森林) 对于运动预测的有效性.
主要方法:
- 使用KNN,BiLSTM或TCN进行行动分类和随机森林进行联合级回归的等级方法.
- 开发一个基于多个动作 (向后走,跪下,跑步,走路) 的数据进行训练的行动通用随机森林模型.
- 预测未来100毫秒的关节角度,使用IMU数据.
主要成果:
- 与等级方法相比,动作通用模型对特定动作 (向后走,跪下,跪起来) 的预测误差较低.
- 虽然TCN和BiLSTM实现了高分类准确度,但它们的表现并没有超过联合行动特定的随机森林模型.
- 行动通用模型的优异性能可以归因于对更大,更多样化的数据集的培训.
结论:
- 在行动通用模型中利用大而不同的数据源对联合级预测的等级方法具有优势.
- 一个IMU驱动的,任务不可知模型是有效的预测未来的关节角度跨越各种人类运动.
- 这项研究突出了通用模型对于先进的人类运动意图识别的潜力.
更多相关视频
11:14A Novel Experimental and Analytical Approach to the Multimodal Neural Decoding of Intent During Social Interaction in Freely-behaving Human Infants
Published on: October 4, 2015
10.9K
11:18Quantifying Learning in Young Infants: Tracking Leg Actions During a Discovery-learning Task
Published on: June 1, 2015
10.6K
相关概念视频
01:22Multi-input and Multi-variable systems
96
Cruise control systems in cars are designed as multi-input systems to maintain a driver's desired speed while compensating for external disturbances such as changes in terrain. The block diagram for a cruise control system typically includes two main inputs: the desired speed set by the driver and any external disturbances, such as the incline of the road. By adjusting the engine throttle, the system maintains the vehicle's speed as close to the desired value as possible.
In the absence...
In the absence...
96
01:27Associative Learning
288
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...
288
01:18Hierarchy of Motor Control
2.5K
The hierarchy of motor control refers to the different levels of organization and processing involved in controlling movement in the body. These levels range from higher cortical areas involved in planning and decision-making to lower spinal cord reflexes that respond automatically to external stimuli.
2.5K
01:22Force Classification
1.1K
Forces play a crucial role in the study of physics and engineering. They are essential in describing the motion, behavior, and equilibrium of objects in the physical world. Forces can be classified based on their origin, type, and direction of action.
Contact and non-contact forces are two of the most widely used categories of forces. As the name suggests, contact forces require physical contact between two objects to act upon each other. Examples of contact forces include frictional,...
Contact and non-contact forces are two of the most widely used categories of forces. As the name suggests, contact forces require physical contact between two objects to act upon each other. Examples of contact forces include frictional,...
1.1K
01:06Fixed Action Patterns
15.8K
A fixed action pattern (FAP) is a specific, hard-wired sequence of behaviors that occurs in response to an external stimulus, called a sign stimulus. The behavior is “fixed” because it is essentially unchangeable—proceeding similarly across individuals of a species every time it occurs.
15.8K
01:09Functional Classification of Joints
3.8K
Functional Classification of Joints
The functional classification of joints is determined by the amount of mobility between the adjacent bones. Joints are functionally classified as a synarthrosis or immobile joint, an amphiarthrosis or slightly moveable joint, or as a diarthrosis, a freely moveable joint. Fibrous and cartilaginous joints can be functionally classified as either synarthroses or amphiarthroses, whereas all synovial joints are classified as diarthroses.
Synarthrosis
An...
The functional classification of joints is determined by the amount of mobility between the adjacent bones. Joints are functionally classified as a synarthrosis or immobile joint, an amphiarthrosis or slightly moveable joint, or as a diarthrosis, a freely moveable joint. Fibrous and cartilaginous joints can be functionally classified as either synarthroses or amphiarthroses, whereas all synovial joints are classified as diarthroses.
Synarthrosis
An...
3.8K