Dimensionality Reduction for Human Activity Recognition Using Google Colab
Human activity recognition (HAR) is a classification task that involves predicting the movement of a person based on sensor data. As we can see, there has been a huge growth and development of smartphones over the last 10–15 years—they could be used as a medium of mobile sensing to recognize human a...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-12-01
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| Series: | Information |
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| Online Access: | https://www.mdpi.com/2078-2489/12/1/6 |
| _version_ | 1827699381284896768 |
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| author | Sujan Ray Khaldoon Alshouiliy Dharma P. Agrawal |
| author_facet | Sujan Ray Khaldoon Alshouiliy Dharma P. Agrawal |
| author_sort | Sujan Ray |
| collection | DOAJ |
| description | Human activity recognition (HAR) is a classification task that involves predicting the movement of a person based on sensor data. As we can see, there has been a huge growth and development of smartphones over the last 10–15 years—they could be used as a medium of mobile sensing to recognize human activity. Nowadays, deep learning methods are in a great demand and we could use those methods to recognize human activity. A great way is to build a convolutional neural network (CNN). HAR using Smartphone dataset has been widely used by researchers to develop machine learning models to recognize human activity. The dataset has two parts: training and testing. In this paper, we propose a hybrid approach to analyze and recognize human activity on the same dataset using deep learning method on cloud-based platform. We have applied principal component analysis on the dataset to get the most important features. Next, we have executed the experiment for all the features as well as the top 48, 92, 138, and 164 features. We have run all the experiments on Google Colab. In the experiment, for the evaluation of our proposed methodology, datasets are split into two different ratios such as 70–10–20% and 80–10–10% for training, validation, and testing, respectively. We have set the performance of CNN (70% training–10% validation–20% testing) with 48 features as a benchmark for our work. In this work, we have achieved maximum accuracy of 98.70% with CNN. On the other hand, we have obtained 96.36% accuracy with the top 92 features of the dataset. We can see from the experimental results that if we could select the features properly then not only could the accuracy be improved but also the training and testing time of the model. |
| first_indexed | 2024-03-10T13:49:01Z |
| format | Article |
| id | doaj.art-0a927eae40f746858fb9ce8de02f0cf7 |
| institution | Directory Open Access Journal |
| issn | 2078-2489 |
| language | English |
| last_indexed | 2024-03-10T13:49:01Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Information |
| spelling | doaj.art-0a927eae40f746858fb9ce8de02f0cf72023-11-21T02:18:28ZengMDPI AGInformation2078-24892020-12-01121610.3390/info12010006Dimensionality Reduction for Human Activity Recognition Using Google ColabSujan Ray0Khaldoon Alshouiliy1Dharma P. Agrawal2Center for Distributed and Mobile Computing, EECS, University of Cincinnati, Cincinnati, OH 45221, USACenter for Distributed and Mobile Computing, EECS, University of Cincinnati, Cincinnati, OH 45221, USACenter for Distributed and Mobile Computing, EECS, University of Cincinnati, Cincinnati, OH 45221, USAHuman activity recognition (HAR) is a classification task that involves predicting the movement of a person based on sensor data. As we can see, there has been a huge growth and development of smartphones over the last 10–15 years—they could be used as a medium of mobile sensing to recognize human activity. Nowadays, deep learning methods are in a great demand and we could use those methods to recognize human activity. A great way is to build a convolutional neural network (CNN). HAR using Smartphone dataset has been widely used by researchers to develop machine learning models to recognize human activity. The dataset has two parts: training and testing. In this paper, we propose a hybrid approach to analyze and recognize human activity on the same dataset using deep learning method on cloud-based platform. We have applied principal component analysis on the dataset to get the most important features. Next, we have executed the experiment for all the features as well as the top 48, 92, 138, and 164 features. We have run all the experiments on Google Colab. In the experiment, for the evaluation of our proposed methodology, datasets are split into two different ratios such as 70–10–20% and 80–10–10% for training, validation, and testing, respectively. We have set the performance of CNN (70% training–10% validation–20% testing) with 48 features as a benchmark for our work. In this work, we have achieved maximum accuracy of 98.70% with CNN. On the other hand, we have obtained 96.36% accuracy with the top 92 features of the dataset. We can see from the experimental results that if we could select the features properly then not only could the accuracy be improved but also the training and testing time of the model.https://www.mdpi.com/2078-2489/12/1/6cloud platformconvolutional neural network (CNN)deep learningdimensionality reductionfeature extractiongoogle colab |
| spellingShingle | Sujan Ray Khaldoon Alshouiliy Dharma P. Agrawal Dimensionality Reduction for Human Activity Recognition Using Google Colab Information cloud platform convolutional neural network (CNN) deep learning dimensionality reduction feature extraction google colab |
| title | Dimensionality Reduction for Human Activity Recognition Using Google Colab |
| title_full | Dimensionality Reduction for Human Activity Recognition Using Google Colab |
| title_fullStr | Dimensionality Reduction for Human Activity Recognition Using Google Colab |
| title_full_unstemmed | Dimensionality Reduction for Human Activity Recognition Using Google Colab |
| title_short | Dimensionality Reduction for Human Activity Recognition Using Google Colab |
| title_sort | dimensionality reduction for human activity recognition using google colab |
| topic | cloud platform convolutional neural network (CNN) deep learning dimensionality reduction feature extraction google colab |
| url | https://www.mdpi.com/2078-2489/12/1/6 |
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