CS231n Image Classification: Data-driven Approach, k-Nearest Neighbor, train/val/test splits
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知识性的内容主要的增加:
1.对于knn算法有FLANN - Fast Library for Approximate Nearest Neighbors
等开源的高效函数库可以使用。可以读读源代码,应该很有意思。
http://www.cs.ubc.ca/research/flann/
2.对于高维数据的可视化t-SNE,能够将高维图片根据L2距离在二维平面上进行展示。
http://lvdmaaten.github.io/tsne/
cifar-10
http://karpathy.github.io/2011/04/27/manually-classifying-cifar10/
http://www.cs.toronto.edu/~kriz/cifar.html
一些值得注意的点:
1.为了能够将高维度的数据降维,可以pca svd 还有random_projection等方式。
http://scikit-learn.org/stable/modules/random_projection.html
2.cross-validation
further reading
1.http://homes.cs.washington.edu/~pedrod/papers/cacm12.pdf
2.http://people.csail.mit.edu/torralba/shortCourseRLOC/index.html
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