Author

Chwmwei

@chwmwei

articles: 12
total claps: 5
top claps: 5
avg read: 1.7 min
active: 2026-02-28 → 2026-04-03

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EDU · Education & Learning · 6 ML · Machine Learning · 6 💻 · Programming · 3 💪 · Fitness & Wellness · 1 🔧 · Data Engineering · 1 SAF · Safety & Alignment · 1 VIS · Visual & Graphic Design · 1 👗 · Fashion · 1

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#machine-learning ·3 #computer-vision ·3 #backpropagation ·2 #apc ·1 #nmf ·1 #vq ·1 #ai-agent ·1 #ai-voice-agent ·1 #deep-learning ·1 #srnn ·1

HUM MDA AI TCH

CH Chwmwei

Machine Learning Algorithms with Python: Perceptron Original and Dual Form

The Perceptron algorithm, a foundational binary linear classifier, can be expressed in two primary forms: the Original (Primal) form and…

Mar 22, 2026 · 2 min read · 5 claps #perceptron #dual-form #machine-learning

CH Chwmwei

Manual Derivation Series: Active Contour Model (Snake Model) and Python Implementation

The Active Contour Model, also known as the Snake Model, is a powerful image processing technique used to detect and track object…

Mar 24, 2026 · 3 min read · 0 claps #snakes #computer-vision

Manual Derivation Series: Active Contour Model (Snake Model) and Python Implementation

CH Chwmwei

Manual Derivation Series: Level Set (CV Model) and Python Implementation

The Snake model has several drawbacks:

Mar 29, 2026 · 3 min read · 0 claps #chan-vese #computer-vision

Manual Derivation Series: Level Set (CV Model) and Python Implementation

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CH Chwmwei

Manual Derivation Series: Cross Entropy Loss, Backpropagation and Adam in Fashion MNIST

Fashion MNIST is a popular machine learning dataset and serves as an alternative to the classic MNIST handwritten digit dataset. This case…

Mar 09, 2026 · 2 min read · 0 claps #computer-vision #adam #backpropagation

Manual Derivation Series: Cross Entropy Loss, Backpropagation and Adam in Fashion MNIST

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CH Chwmwei

Manual Derivation Series: Recurrent Neural Network(SRNN) Back Propagation

Recurrent Neural Networks (RNNs) are a class of deep learning models specifically designed to process sequential data (such as text…

Mar 20, 2026 · 2 min read · 0 claps #deep-learning #srnn #backpropagation

Manual Derivation Series: Recurrent Neural Network(SRNN) Back Propagation

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CH Chwmwei

Manual Derivation Series: EM Algorithm and Gaussian Mixture Model

EM (Expectation-Maximization) algorithm’s core idea is very simple, consisting of two steps: Expectation-Step and Maximization-Step. The…

Mar 16, 2026 · 2 min read · 0 claps #machine-learning #me #gaussian-mixture-model

Manual Derivation Series: EM Algorithm and Gaussian Mixture Model

MDA HUM AI TCH

CH Chwmwei

Reading Notes CH06: Logistic Regression and Maximum Entropy models in machine learning

Both Logistic Regression (LR) and Maximum Entropy (MaxEnt) models belong to the class of Log-Linear Models. Common optimization algorithms…

Feb 28, 2026 · 1 min read · 0 claps #logistic-regression #maximum-entropy

Reading Notes CH06: Logistic Regression and Maximum Entropy models in machine learning

TCH AI DSN

CH Chwmwei

Manual Derivation Series: Bias-Variance Decomposition, Adaboost, Boosting Tree and GDBT

Bias-Variance Decomposition: The generalization error of a model f can be decomposed into three components: bias, variance, and noise.

Mar 21, 2026 · 1 min read · 0 claps #gradient-boosting #boosting

Manual Derivation Series: Bias-Variance Decomposition, Adaboost, Boosting Tree and GDBT

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CH Chwmwei

Manual Derivation Series: Matrix Factorization techniques->NMF, PCA, and VQ

They are general mathematical tools for matrix dimensionality reduction, which are then applied to images by treating images as…

Mar 11, 2026 · 1 min read · 0 claps #apc #nmf #vq

Manual Derivation Series: Matrix Factorization techniques->NMF, PCA, and VQ

CH Chwmwei

Manual Derivation Series: Fourier Transform

Fourier’s idea was to represent a periodic function as a linear combination of many sine functions.

Mar 27, 2026 · 1 min read · 0 claps #fourier-transform

Manual Derivation Series: Fourier Transform

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CH Chwmwei

Manual Derivation Series: Cosine Similarity in Clustering and SVD Exercise

For clustering analysis can man also use cosine similarity except distance.

Mar 07, 2026 · 1 min read · 0 claps #machine-learning #derivation #cosine-similarity

Manual Derivation Series: Cosine Similarity in Clustering and SVD Exercise

CH Chwmwei

Deploy a Local Voice Agent on Your PC (Free & Safe)

This small demo project wires together three “agents” to build an end‑to‑end voice assistant that runs entirely on your local PC:

Apr 03, 2026 · 1 min read · 0 claps #ai-agent #ai-voice-agent