Alex Baker · Research Journal

Research notes, milestones, and methods

A high-end research journal across AstroSpectro, AstroVision, documentation work, and Bayesian cosmology — written as an evolving lab notebook with publication-grade intent.

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AstroSpectroAugust 1, 20254 minutes to read

From 32% to 84%: The Story of a Breakthrough in AI-Based Stellar Classification

An astrophysics lesson: when feature engineering beats brute force.

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AstroSpectroJuly 24, 20255 minutes to read

Anatomy of an Improvement

How better feature extraction increased model performance from 32% to 56%.

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AstroSpectroJuly 23, 2025

Notebook Refactoring

Toward a Modular Scientific Suite for AstroSpectro: clarity, reusability, and explorability.

AstroSpectrorefactoringvisualizationarchitecture

AstroSpectroJuly 22, 2025

First Model: Lessons from a 32% Baseline

Secrets from a confusion matrix and the challenges of missing features during the first training run.

AstroSpectromachine-learningbaselinefeature-engineering

AstroSpectroJuly 15, 2025

Journal Entry: Documentation v0.1.0-alpha Is Complete!

The transition from a simple README to a full Docusaurus site with automated CI/CD deployment.

AstroSpectrodocumentationmilestonev0.1.0-alpha