相关实验视频
Updated: Jun 25, 2025

13:19
Deep Neural Networks for Image-Based Dietary Assessment
Published on: March 13, 2021
9.0K
在深层辐射基函数网络中学习
Fabian Wurzberger1, Friedhelm Schwenker1
1Institute of Neural Information Processing, Ulm University, James-Franck-Ring, 89081 Ulm, Germany.
Entropy (Basel, Switzerland)
|May 24, 2024
概括
深射线基函数 (RBF) 网络可以使其稳定和高效,用于像图像分类这样的任务. 本研究引入了用于训练更深层次的RBF架构的新方法,实现了与卷积神经网络 (CNN) 相似的结果.
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:
- 辐射基函数 (RBF) 网络通常是单层的,因为在更深层架构中感知到不稳定性.
- 现有的通用近似定理支持单层RBF网络,限制了对更深层模型的探索.
- 包括卷积神经网络 (CNN) 在内的深度神经网络在各种任务中取得了重大成功.
研究的目的:
- 展示设计稳定,多层RBF网络架构的可行性和有效性.
- 为深度RBF网络开发高效的学习方案.
- 将深度RBF网络的性能与已建立的深度学习模型 (如CNN) 进行比较.
主要方法:
- 引入了深度RBF网络的新型初始化方案,使用k-means集群和协差估计.
- 利用卷积运算以加快Mahalanobis距离计算,以一种部分连接的方式,受CNNs的启发.
- 评估了关于图像分类和语音情感识别数据集的拟议深度RBF网络方法.
主要成果:
- 深度RBF网络成功地设计了高效的学习方案.
- 提出的方法使多层RBF架构的稳定训练成为可能.
- 深度RBF网络在测试任务中实现了与CNN等最先进的深度神经网络相提并论的性能.
结论:
- 可以有效地实现和训练更深层次的RBF网络架构.
- 开发的初始化和卷积加速技术有助于稳定和高效的深度RBF学习.
- 深度RBF网络为其他深度学习架构提供了可行的替代方案,用于复杂的任务,例如图像分类和语音情感识别.
相关概念视频
Associative Learning
340
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...
340
Neural Circuits
1.2K
Neural circuits and neuronal pools are two of the main structures found in the nervous system. Neural circuits are networks of neurons that work together to carry out a specific task or process. They consist of interconnected neurons and glial cells, which provide structural and metabolic support.
Neuronal pools are collections of nerve cells with similar functions and interact through chemical and electrical signals. These pools include both interneurons (the central neural circuit nodes that...
Neuronal pools are collections of nerve cells with similar functions and interact through chemical and electrical signals. These pools include both interneurons (the central neural circuit nodes that...
1.2K
Radial System Protection
94
Radial systems employ time-delay overcurrent relays to reduce load interruptions. When a fault occurs, the nearest breaker opens first, while upstream breakers remain closed due to longer delay settings. This approach ensures minimal disruption to the rest of the system.
In a radial system with a fault downstream of the third breaker, ideally, only the third breaker will open, isolating the fault and interrupting the load connected beyond it. The second breaker has a longer delay setting,...
In a radial system with a fault downstream of the third breaker, ideally, only the third breaker will open, isolating the fault and interrupting the load connected beyond it. The second breaker has a longer delay setting,...
94
Radius of Gyration of an Area
1.5K
The second moment of area, also known as the moment of inertia of area, is a crucial factor in understanding an object's resistance against bending deformation, or stiffness. To accurately estimate the second moment of area along any axis, one needs to concentrate all areas associated with that object into a thin strip, which should be placed parallel to that particular axis.
1.5K
Linear Approximation in Frequency Domain
89
Linear systems are characterized by two main properties: superposition and homogeneity. Superposition allows the response to multiple inputs to be the sum of the responses to each individual input. Homogeneity ensures that scaling an input by a scalar results in the response being scaled by the same scalar.
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear....
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear....
89
Radical Formation: Overview
2.1K
A bond can be broken either by heterolytic bond cleavage to form ions or homolytic bond cleavage to yield radicals. A fishhook arrow is used to represent the motion of a single electron in homolytic bond cleavage. There are two main sources from which radicals can be formed:
Radicals from spin-paired molecules:
Radicals can be obtained from spin-paired molecules either by homolysis or electron transfer. While two radicals are formed in the former, an electron is added in the...
Radicals from spin-paired molecules:
Radicals can be obtained from spin-paired molecules either by homolysis or electron transfer. While two radicals are formed in the former, an electron is added in the...
2.1K

