toy-datasci

Machine learning algorithms on toy datasets

Linear regression

Hand-coded linear regression on a toy dataset

Logistic regression

Hand-coded logistic regression on a toy dataset

Logistic polynomial regression

Hand-coded logistic regression using second degree polynomial on a toy dataset

Underfit / fit / overfit

Training different degree polynomial models on the same dataset to compare bias and variance

L1 regularization

Polynomial regression with L1_regularization on a toy dataset

Perceptron

Hand-coded perceptron on XOR-shaped toy dataset

k-means

Hand-coded k-means clustering on a toy dataset

PCA

Hand-coded PCA algorithm for dimensionality reduction on a toy dataset

Feed-forward neural network

Hand-coded feed-forward neural network a toy dataset

Reinforcement learning

Hand-coded value iteration algorithm on a toy dataset