power-iteration 2 pca-implementation 2 pca 2 mnist-preprocessing 2 mnist-dataset 2 unsupervised-learning 2 variance-analysis 2 k-means-implementation-in-python 2 k-means-clustering 2 insertion-sort 2 eigenvectors-implementation 2 eigenvectors 2 eigenvalues-implementation 2 eigenvalues 2 covariance-matrix-implementation 2 perceptron 2 artificial-intelligence 1 ann 1 ai 1 implementation-from-scratch 1 artificial-neural-networks 1 hebbian-learning-rule 1 perceptron-neural-networks 1 testing 1 training 1 two-layer-neural-network 1 neural-networks 1 neural-network 1 hebbian-learning 1 character-recognition 1 kmeans-clustering-algorithm 1 kmeans-clustering 1 perceptron-learning-algorithm 1 multilayer-perceptron-network 1 delta-rule 1 adaline 1