mnist数据集pca降维准确率
时间: 2023-08-27 12:04:40 浏览: 114
PCA+mnist_PCA降维;KNN分类;mnist手写体_pypcaminist_K._python_MNIST降维_
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根据引用中的实验结果,使用PCA降维后的mnist数据集在不同的数据量下,KNN算法的准确率如下:
- 数据量为10000时,准确率为0.9525;
- 数据量为20000时,准确率为0.91825;
- 数据量为30000时,准确率为0.8881;
- 数据量为40000时,准确率为0.8605;
- 数据量为50000时,准确率为0.733。
因此,可以看出随着数据量的增加,KNN算法的准确率有所下降。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* [案例:PCA对手写数字数据集的降维](https://blog.csdn.net/m0_50572604/article/details/121055534)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT0_1"}}] [.reference_item style="max-width: 33.333333333333336%"]
- *2* [python mnist数据集PCA降维后KNN分类 97%准确率](https://blog.csdn.net/becatjd/article/details/106146338)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT0_1"}}] [.reference_item style="max-width: 33.333333333333336%"]
- *3* [PCA+KNN用于mnist手写体数据集](https://blog.csdn.net/Rookiegrowth/article/details/86077463)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT0_1"}}] [.reference_item style="max-width: 33.333333333333336%"]
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