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This repository contains implementations of basic machine learning algorithms in plain Python (Python Version 3.6+). All algorithms are implemented from scratch without using additional machine learning libraries. The intention of these notebooks is to provide a basic understanding of the algorithms and their underlying structure,not to provide the most efficient implementations.

• Bayesian Linear Regression
• Decision tree for classification
• Decision tree for regression
• k-nearest-neighbor
• k-Means clustering
• Linear Regression
• Logistic Regression
• Multinomial Logistic Regression
• Perceptron
• Principal Component Analysis
• Simple neural network with one hidden layer
• Softmax regression
• Support vector machines

After several requests I started preparing notebooks on how to preprocess datasets for machine learning. Within the next months I will add one notebook for each kind of dataset (text, images, ...). As before, the intention of these notebooks is to provide a basic understanding of the preprocessing steps,not to provide the most efficient implementations.

• Image preprocessing
• Preprocessing a numerical/categorical dataset

Run the notebooks online without having to clone the repository or install jupyter:.

Note: this does not work for thedata_preprocessing.ipynb andimage_preprocessing.ipynb notebooks because they require downloading a dataset first.

If you have a favorite algorithm that should be included or spot a mistake in one of the notebooks, please let me know by creating a new issue.

See the LICENSE file for license rights and limitations (MIT).