Archive

2026  16

April  4

Paper Roundup: LLM Safety & RLHF at NeurIPS 2025 and ICLR 2026

April 29,2026 | Estimated reading time: 9 min | 1784 words | Author: khanhnn

Ara: What If Research Papers Were Executable?

April 28,2026 | Estimated reading time: 7 min | 1282 words | Author: khanhnn

Pluralistic Alignment: One Model, Many Values

April 15,2026 | Estimated reading time: 6 min | 1114 words | Author: khanhnn

Sparse Autoencoders: The Swiss Army Knife of Interpretability

April 8,2026 | Estimated reading time: 6 min | 1233 words | Author: khanhnn

March  5

SafeDPO and Friends: Preference Optimization That Doesn’t Sacrifice Safety

March 30,2026 | Estimated reading time: 6 min | 1067 words | Author: khanhnn

Does RL Actually Make LLMs Reason Better?

March 28,2026 | Estimated reading time: 6 min | 1098 words | Author: khanhnn

RLHF Is Just Divergence Estimation in Disguise

March 22,2026 | Estimated reading time: 6 min | 1137 words | Author: khanhnn

From Policy Gradient to PPO — Part 2: Trust Regions, PPO, and GRPO

March 18,2026 | Estimated reading time: 7 min | 1280 words | Author: khanhnn

From Policy Gradient to PPO — Part 1: Foundations

March 5,2026 | Estimated reading time: 6 min | 1153 words | Author: khanhnn

February  4

VAE Variants and Modern Interpretations

February 25,2026 | Estimated reading time: 8 min | 1660 words | Author: khanhnn

Transformers from First Principles — Part 2: What Scale Reveals

February 20,2026 | Estimated reading time: 7 min | 1487 words | Author: khanhnn

β-VAE and the Emergence of Disentanglement

February 10,2026 | Estimated reading time: 8 min | 1623 words | Author: khanhnn

Transformers from First Principles — Part 1: Attention Is All You Need (Really)

February 8,2026 | Estimated reading time: 8 min | 1533 words | Author: khanhnn

January  3

Conditional VAE (CVAE): Learning to Generate with Conditions

January 25,2026 | Estimated reading time: 8 min | 1514 words | Author: khanhnn

Safety Neurons: 5% of Your Model Controls 90% of Safety

January 18,2026 | Estimated reading time: 5 min | 1033 words | Author: khanhnn

Dissecting the VAE Objective: KL, Reconstruction, and the Reparameterization Trick

January 10,2026 | Estimated reading time: 8 min | 1589 words | Author: khanhnn

2025  3

December  2

A Curated Guide to LLMs, Reinforcement Learning, and AI Safety

December 28,2025 | Estimated reading time: 8 min | 1495 words | Author: khanhnn

Variational Inference: Cracking the Intractable Integral

December 20,2025 | Estimated reading time: 9 min | 1869 words | Author: khanhnn

October  1

Latent Variable Models: A Probabilistic Foundation

October 28,2025 | Estimated reading time: 7 min | 1401 words | Author: khanhnn

2024  8

December  1

An overview on generative models paradigms

December 24,2024 | Estimated reading time: 8 min | 1554 words | Author: khanhnn

October  1

Information Theory

October 5,2024 | Estimated reading time: 10 min | 2059 words | Author: khanhnn

September  1

The Curse of Dimensionality and Decision Theory

September 2,2024 | Estimated reading time: 16 min | 3356 words | Author: khanhnn

August  1

Transformations of random variables

August 15,2024 | Estimated reading time: 10 min | 2023 words | Author: khanhnn

July  3

Bayesian Probability

July 21,2024 | Estimated reading time: 5 min | 886 words | Author: khanhnn

Basic Probability

July 12,2024 | Estimated reading time: 8 min | 1588 words | Author: khanhnn

Polynomial curve fitting

July 5,2024 | Estimated reading time: 13 min | 2689 words | Author: khanhnn

June  1

Diffusion Models

June 11,2024 | Estimated reading time: 5 min | 1044 words | Author: khanhnn

2021  9

August  4

Determinant of matrices, eigenvalues and eigenvectors

August 21,2021 | Estimated reading time: 6 min | 1264 words | Author: khanhnn

Span, basis, and dimension

August 7,2021 | Estimated reading time: 6 min | 1118 words | Author: khanhnn

The four fundamental subspaces in Linear Algebra

August 7,2021 | Estimated reading time: 8 min | 1540 words | Author: khanhnn

Solving Ax = b

August 1,2021 | Estimated reading time: 10 min | 2124 words | Author: khanhnn

July  5

Nullspace and solving Ax=0

July 27,2021 | Estimated reading time: 8 min | 1679 words | Author: khanhnn

Echelon Form and Rank of a matrix

July 25,2021 | Estimated reading time: 3 min | 480 words | Author: khanhnn

Vector spaces and subspaces

July 23,2021 | Estimated reading time: 6 min | 1126 words | Author: khanhnn

Vanishing Gradients

July 21,2021 | Estimated reading time: 6 min | 1162 words | Author: khanhnn

Basic concepts in Linear Algebra

July 20,2021 | Estimated reading time: 7 min | 1352 words | Author: khanhnn