相关实验视频
Updated: Sep 13, 2025

09:11
Controlled Rotation of Human Observers in a Virtual Reality Environment
Published on: April 21, 2022
2.7K
RoSwish:一种新的旋转动激活功能,可在零点周围自适应旋转
1Swinburne College, Shandong University of Science and Technology, Jinan, 250031, China.
概括
新的旋转 (RoSwish) 激活功能通过整合多个现有功能的功能来增强神经网络的表达力. 在各种机器学习任务中,RoSwish表现出显著的性能改进,包括分类和时间序列预测.
科学领域:
- 人工智能的人工智能
- 机器学习 机器学习
- 深度学习 (Deep Learning) 是一种深度学习.
背景情况:
- 现有的激活函数通常在非线性表达能力方面存在局限性.
- 需要激活功能来提供更好的平滑性,梯度稳定性和适应性.
- 当前的模型难以有效地表示非静态信号.
研究的目的:
- 为了介绍新的旋转 (RoSwish) 激活功能.
- 提高神经网络中的非线性表达能力和性能.
- 探索激活函数,灵感来自于非静止的随机过程理论.
主要方法:
- 开发了RoSwish激活函数:f(x) =(x+α) ·sigmoid(β·x) -0.5·α,具有可学习的参数α和β.
- 整合了Rectified Linear Unit (ReLU),高斯错误线性单位 (GELU),指数线性单位 (ELU),参数ReLU (PReLU) 和Swish的优势特征.
- 设计了一系列基于非静止正弦波的激活函数.
主要成果:
- 在MNIST分类 (≥16.02%),MNIST自动编码 (MSE减少≥5%),tweet标记 (≥3.65%) 和ETTm2时间序列预测 (≥6.06%) 中,RoSwish实现了显著的性能改进.
- 结合RoSwish和批量规范化,在低学习率下,推特标记有30.19%的改进.
- 基于非静止正弦波的激活函数至少提高了6.55%的MNIST分类性能.
结论:
- 与现有的激活功能相比,RoSwish提供了卓越的非线性表达能力和适应性.
- 拟议的激活函数显示了在各种应用中增强神经网络性能的前景.
- 这项研究为开发复杂数据表示的高级激活函数提供了新的途径.
相关概念视频
Rotational Motion about a Fixed Axis
705
A rigid body's rotation around a fixed axis makes every point within it trace a circular path around a specific line or point. The term given to this type of spinning is defined by the angular position, symbolized by the angle θ. This angle is gauged from a static reference line to the revolving object. From this angular position, any variation is referred to as angular displacement, denoted by dθ. The extent of this displacement can be calculated in degrees, radians, or...
705
Angle of Twist: Problem Solving
393
An electric motor applies a torque of 700 N·m to an aluminum shaft, triggering a stable rotation. Two pulleys, B and C, are subjected to torques of 300 N·m and 400 N·m, respectively. The modulus of rigidity is provided as 25 GPa. With the knowledge of the length and diameter of each segment, the twist angle between the two pulleys can be computed. First, a section cut is made between pulleys B and C, and the cut cross-section is analyzed using a free-body diagram. Given that the...
393
Rotation of Asymmetric Top
1000
By definition, a spherically symmetric body has the same moment of inertia about any axis passing through its center of mass. This situation changes if there is no spherical symmetry. Since most rigid bodies are not spherically symmetric, these require special treatment.
The relationship between the angular momentum of any rigid body and its angular velocity, both of which are vectors, involves the moment of inertia. The moment of inertia is a scalar quantity only for spherically symmetric...
The relationship between the angular momentum of any rigid body and its angular velocity, both of which are vectors, involves the moment of inertia. The moment of inertia is a scalar quantity only for spherically symmetric...
1000
Vector Transformation in Rotating Coordinate Systems
1.8K
Consider a vector rotating about an axis with an angular velocity, such that its tip sweeps a circular path.
1.8K
Rotation with Constant Angular Acceleration - I
6.9K
If angular acceleration is constant, then we can simplify equations of rotational kinematics, similar to the equations of linear kinematics. This simplified set of equations can be used to describe many applications in physics and engineering where the angular acceleration of a system is constant.
Using our intuition, we can begin to see how rotational quantities such as angular displacement, angular velocity, angular acceleration, and time are related to one another. For example, if a flywheel...
Using our intuition, we can begin to see how rotational quantities such as angular displacement, angular velocity, angular acceleration, and time are related to one another. For example, if a flywheel...
6.9K
Rotation with Constant Angular Acceleration - II
6.1K
Kinematics is the description of motion. The kinematics of rotational motion discusses the relationships between rotation angle, angular velocity, angular acceleration, and time. One can describe many things with great precision using kinematics, but kinematics does not consider causes. For example, a large angular acceleration describes a very rapid change in angular velocity without any consideration of its cause. Thus, rotational kinematics does not represent the laws of nature.
The first...
The first...
6.1K

