Towards Data Science

Autoencoders vs. PCA: I Rigged the Test and PCA Still Won

The article titled "Autoencoders vs. PCA: I Rigged the Test and PCA Still Won" discusses a comparative study between autoencoders and Principal Component Analysis (PCA). It highlights that a theoretical advantage claimed for autoencoders did not hold up when tested against a real benchmark, leading to PCA outperforming the autoencoder in this scenario.

Towards Data Science
Sep 22

Break Your Own RAG Pipeline Before Users Do

The article discusses a small adversarial test set designed to detect retrieval failures in Retrieval-Augmented Generation (RAG) pipelines that typical evaluation sets might miss. It emphasizes the importance of proactively testing your own RAG system to uncover hidden weaknesses before users encounter them. By using this targeted test set, developers can improve the reliability and robustness of their RAG models.

By Sara Nobrega
Towards Data Science
Aug 28

Why Claude Code Time Estimates Are Poor

The article titled "Why Claude Code Time Estimates Are Poor" discusses the challenges and shortcomings of using Claude, an LLM, for estimating code development time. It highlights how these estimates can be unreliable and offers insights into improving communication when working with LLM programming tools.

By Eivind Kjosbakken
arXiv Machine Learning
Aug 11

A solvable high-dimensional model where nonlinear autoencoders learn structure invisible to PCA while test loss misaligns with generalization

arXiv:2602. 10680v2 Announce Type: replace-cross Abstract: Many real-world datasets contain hidden structure that cannot be detected by simple linear correlations between input features.

By Vicente Conde Mendes, Lorenzo Bardone, C\'edric Koller, Jorge Medina Moreira, Vittorio Erba, Emanuele Troiani, Lenka Zdeborov\'a
Towards Data Science
Jul 14

A Gentle Introduction to Autoencoders & Latent Space

Introduction Heavy computation is a well-known problem in various ML algorithms today, especially when generative AI is applied to text, images, and other unstructured data. One of the principal approaches to mitigate this problem is to compress input data into a lower-dimensional representation while preserving the main context.

By Vyacheslav Efimov