Understanding and Improving Deep Neural Network for Activity Recognition
| Autor: | Ding Renjie, Li Jiazhen, Zhan De-chen, Nie Lanshun, Li Xue, Si Xiandong, Chu Dianhui |
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| Rok vydání: | 2018 |
| Předmět: |
FOS: Computer and information sciences
Ubiquitous computing Artificial neural network Computer science business.industry Deep learning Computer Vision and Pattern Recognition (cs.CV) Computer Science - Computer Vision and Pattern Recognition 020206 networking & telecommunications Pattern recognition 02 engineering and technology Convolutional neural network Field (computer science) Visualization Data set Activity recognition 0202 electrical engineering electronic engineering information engineering 020201 artificial intelligence & image processing Artificial intelligence business |
| DOI: | 10.48550/arxiv.1805.07020 |
| Popis: | Activity recognition has become a popular research branch in the field of pervasive computing in recent years. A large number of experiments can be obtained that activity sensor-based data's characteristic in activity recognition is variety, volume, and velocity. Deep learning technology, together with its various models, is one of the most effective ways of working on activity data. Nevertheless, there is no clear understanding of why it performs so well or how to make it more effective. In order to solve this problem, first, we applied convolution neural network on Human Activity Recognition Using Smart phones Data Set. Second, we realized the visualization of the sensor-based activity's data features extracted from the neural network. Then we had in-depth analysis of the visualization of features, explored the relationship between activity and features, and analyzed how Neural Networks identify activity based on these features. After that, we extracted the significant features related to the activities and sent the features to the DNN-based fusion model, which improved the classification rate to 96.1%. This is the first work to our knowledge that visualizes abstract sensor-based activity data features. Based on the results, the method proposed in the paper promises to realize the accurate classification of sensor- based activity recognition. Comment: 10 pages, 9 figures, 6 Tables |
| Databáze: | OpenAIRE |
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