The Role Of Convolutional Neural Networks (cnns) In Medical Image Analysis – This article introduces convolutional neural networks, also known as CNNs, a deep learning model used worldwide in computer vision applications.
A convolutional neural network (CNN) is a special neural network that greatly reduces the number of parameters in a deep neural network without much loss in model quality. CNNs beat previously established benchmarks for image and text processing applications and are one of the main categories for image recognition, image classification, object detection, face recognition, etc.
The Role Of Convolutional Neural Networks (cnns) In Medical Image Analysis
In mathematics (especially functional analysis), convolution is an arithmetic operation on two functions (f and g) and a third function that describes how one shape is transformed by another. The term convolution refers to both the output function and the computation process.
Mnist Handwritten Digits Classification Using A Convolutional Neural Network (cnn)
The main difference between a dense relational layer and a convolutional layer is this: dense layers learn global patterns in their input feature space, while convolutional layers learn local patterns: the patterns are found in small 2D input windows during imaging.
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Convolutional Neural Networks Cheat Sheet
Breaking Down the Mathematics Behind CNN Models: A Comprehensive Guide In this article, we will examine the mathematical foundations of Convolutional Neural Networks (CNNs). CNNs are a form of deep learning…Open Access Policy Institutional Open Access Program Special Guidelines Editorial Process Article Processing and Article Processing Ethics Certificates
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Using Convolutional Neural Networks For Image Segmentation — A Quick Intro.
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By Chang-Cheng Lo Chang-Cheng Lo Skillet Preprints.org Google Scholar 1, Ching-Hung Lee Ching-Hung Lee Skillet Preprints.
Convolutional Neural Network
Received: 28 April 2020 / Revised: 16 June 2020 / Accepted: 18 June 2020 / Published: 22 June 2020
This study aims to propose a preliminary detection method based on one-dimensional convolutional neural network (1-D CNN). The 1-D CNN is trained with a hybrid loss function (ie, output loss and cluster loss in feature space) by collecting the vibration signals of normal and corrupted data. Next, the obtained behavior is accepted to estimate the prediction condition. An open bearing dataset and an established gear platform were used to verify the applicability and feasibility of the proposed model. Moreover, the test platform was used to simulate the gear mechanism of the semiconductor robot. The experimental results demonstrate the performance and effectiveness of the proposed method.
Industrial production lines need to be automated and run stably for quality products. With earlier forecasts, the manufacturer can effectively plan the maintenance period. Many studies have been presented on the analysis and prediction of mechanical components such as bearings, gears and motors [1, 2, 3, 4]. The study in  presented a current signal analysis method with real mode decomposition and Hilbert spectrum for starter broken rotor of induction motors. In the statistical analysis, the damage was detected by the kurtosis value in the early stages. Xiaohang Jin and others. He used the health index obtained from data processing to identify early bearing faults that determine the remaining useful life (RUL). In addition, a current motor signature analysis method for gear wear monitoring based on the modulated signal bispectrum  is proposed. The monitoring method is applied to the current signals from the run-to-failure test on the accelerated fatigue of the helical gearbox.
D Convolutional Neural Network — A Guide For Engineers
In recent years, data-driven technologies have become increasingly popular in automation and data acquisition. Data-driven technologies use artificial intelligence and machine learning to analyze and learn through large amounts of data. It does not require complex modeling and can intelligently improve the diagnosis accuracy by learning proportionally. Guo et al. proposed a recurrent neural network-based health indicator for RUL bearings , proposed to model the characteristics of the vibration signal from 0 to 1 by a recurrent neural network (RNN), and a bi-exponential model is introduced to predict the recording. RUL has also been proposed in various deep learning studies recently [7, 8, 9, 10]. This shows that instead of manually extracting the features by training on the data, they can be automatically extracted by a deep learning model. These studies require full-time follow-up to collect relevant data; However, it is difficult to obtain wear data for the complete process. On the other hand, it is very easy to collect the data of normal and damaged samples, but the basic model cannot achieve the estimation because it only has labels for classifying the data.
Based on the research presented by Erxue Min et al, they researched the clustering with deep learning and showed that the models can extract the clustering features by training designed cluster loss . Moreover, Elie Aljalbout et al. proposed a taxonomy of clustering methods for deep neural networks . Deep learning models are trained on both non-cluster loss and cluster loss to be suitable for their application. In addition, it has been shown that vibration signals reflect the state of the machine in the time domain, frequency domain, and time-frequency domain [1, 13, 14, 15, 16, 17]. In this paper, a deep learning model with cluster loss is proposed to detect vibration signals, and the exact cluster features are obtained through training. The extracted features were used to estimate the current wear condition through the raw vibration signals. The proposed approach was applied to an open bearing dataset, and an established gear platform was used to verify the applicability and feasibility of the proposed model. Finally, the test platform was used to simulate the gear mechanism of the semiconductor robot to conduct a practical test to verify the accuracy of the model estimation.
The rest of this paper is organized as follows. The proposed method is presented in Section 2. Section 3 introduces the first experiment, a preliminary validation with an open bearing dataset and a gear test platform is presented in Section 4 to evaluate the proposed method in a practical problem. Finally, conclusions are given in Section 5.
Understanding Convolutional Neural Network: A Complete Guide
This section presents a deep neural network data-driven technology and a one-dimensional convolutional neural network (1-D CNN) modeling approach. The properties of this technique are suitable for the time series concept and are attributed to the loss of clustering. Finally, wear estimation using a simple linear function map is introduced. By continuously monitoring the forecast, the forecast can be achieved.
As shown in Figure 1 [18, 19, 20], convolutional neural network (CNN) is widely used in many image recognition systems. A CNN typically consists of convolution layers, fusion layers, and a fully connected network. Convolutional layers contain multiple kernel filters that are used to extract image features; Pool layers have the ability to downscale to obtain a lower resolution feature map. Next, the final feature maps are connected to fully connected layers. Finally, the model is trained to reduce the error between the network output and the target output through a backpropagation algorithm. Because of the reused kernel filters, CNN can naturally extract the hidden feature data from the raw input. Therefore, if failure characteristic signals occur repeatedly in vibration signals, each defect characteristic signal is identical to each other.
A series of one-dimensional CNN models proposed by Turker-Innes et al. , was implemented in this study. They proposed a motor abnormality diagnosis and condition monitoring method using an adaptive one-dimensional convolutional neural network (1-D CNN). The structure of 1-D CNN is shown in Figure 2
Classical Convolutional Neural Networks[cnn]
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