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Ensembles, PCA, and K-Means on MNISTGradient descent for kernel learning, decision tree ensembles with bagging and boosting, PCA eigendigits, and k-means clustering on handwritten digits.
9 min -
Kernel Methods and Random Fourier FeaturesLinear SVM, least squares classifiers, Gaussian and Laplacian kernels, random Fourier feature approximation, and RKHS theory on MNIST digits.
11 min -
Bayes Classifiers, k-NN, and VC DimensionBayes optimal classifiers, k-NN error bounds, the curse of dimensionality in high dimensions, and VC dimension for disks and boxes.
11 min -
Speech Recognition with MFCC and DTWExtracting mel-frequency cepstral coefficients from audio and using dynamic time warping for spoken digit recognition.
9 min -
HMM Part-of-Speech Tagger with Baum-WelchImplementing a Hidden Markov Model for POS tagging with supervised MLE, Viterbi decoding, and unsupervised Baum-Welch training.
6 min -
Finite-State Transducers for Cards and SpeechBuilding FSTs to recognize poker hands and composing WFSTs for isolated digit speech recognition.
5 min -
Word2Vec from ScratchBuilding skip-gram and CBOW word2vec models with negative sampling, training on the Stanford Sentiment Treebank.
6 min -
Logistic Regression Decision BoundariesBuilding logistic regression from scratch in NumPy with gradient checking, feature scaling, and decision boundary visualization on exam data.
6 min
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