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      Safety Risk Assessment of Tourism Management System Based on PSO-BP Neural Network

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      1 , 2 ,
      Computational Intelligence and Neuroscience
      Hindawi

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          Abstract

          With the development of science and technology, system management is gradually applied to tourism management. How to correctly assess the security risks of the tourism management system has become an important means to maintain passenger information. The security risk index of the travel management system is input into the PSO-BP network as a sample, and the corresponding risk value of the index is used as the network output. The results show that the error results, accuracy (96.53%), training time (216 s), number of iterations (275 times), and convergence speed are all better than traditional BP network. The relative error of PSO-BP network (0.32%) is better than that of BP network, with 300 iterations, and the error is close to 10–5. The average evaluation accuracy of S based on PSO-BP network is 99.72%, and the average time consumed is 2.512 s. It is superior to the evaluation model based on fuzzy set and entropy weight theory and the evaluation model based on gray correlation analysis and radial basis function neural network. In conclusion, the security risk assessment of the tourism management system based on PSO-BP network can effectively assess the security risk of the tourism management system.

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          ImageNet classification with deep convolutional neural networks

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            Deep convolutional neural network based medical image classification for disease diagnosis

            Medical image classification plays an essential role in clinical treatment and teaching tasks. However, the traditional method has reached its ceiling on performance. Moreover, by using them, much time and effort need to be spent on extracting and selecting classification features. The deep neural network is an emerging machine learning method that has proven its potential for different classification tasks. Notably, the convolutional neural network dominates with the best results on varying image classification tasks. However, medical image datasets are hard to collect because it needs a lot of professional expertise to label them. Therefore, this paper researches how to apply the convolutional neural network (CNN) based algorithm on a chest X-ray dataset to classify pneumonia. Three techniques are evaluated through experiments. These are linear support vector machine classifier with local rotation and orientation free features, transfer learning on two convolutional neural network models: Visual Geometry Group i.e., VGG16 and InceptionV3, and a capsule network training from scratch. Data augmentation is a data preprocessing method applied to all three methods. The results of the experiments show that data augmentation generally is an effective way for all three algorithms to improve performance. Also, Transfer learning is a more useful classification method on a small dataset compared to a support vector machine with oriented fast and rotated binary (ORB) robust independent elementary features and capsule network. In transfer learning, retraining specific features on a new target dataset is essential to improve performance. And, the second important factor is a proper network complexity that matches the scale of the dataset.
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              Image based fruit category classification by 13-layer deep convolutional neural network and data augmentation

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                Author and article information

                Contributors
                Journal
                Comput Intell Neurosci
                Comput Intell Neurosci
                cin
                Computational Intelligence and Neuroscience
                Hindawi
                1687-5265
                1687-5273
                2021
                20 September 2021
                : 2021
                : 1980037
                Affiliations
                1School of Tourism and Urban-Rural Planning, Zhejiang Gongshang University, Hangzhou, Zhejiang 310018, China
                2School of Tourism Management, Xinyang Agriculture and Forestry University, Xinyang, Henan 464000, China
                Author notes

                Academic Editor: Syed Hassan Ahmed

                Author information
                https://orcid.org/0000-0002-3635-8798
                Article
                10.1155/2021/1980037
                8476283
                34589122
                549bd3fd-dfa0-4a47-b724-2771ad2ed6dd
                Copyright © 2021 Wenru Guo.

                This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 2 July 2021
                : 6 September 2021
                Funding
                Funded by: Zhejiang Gongshang University
                Categories
                Research Article

                Neurosciences
                Neurosciences

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