machine-learning — articles | Sakthiish Vijayadass

I Built a Prediction Engine for a World Cup I Never Watched

July 14, 2026

15 min read

How I placed 7th in a global World Cup 2026 prediction game at 75% accuracy — with a 1997 Dixon-Coles Poisson model, bookmaker calibration, and every mistake I made building it.

data-science

machine-learning

football-analytics

statistics

world-cup

Fine-Tuning an LLM - What It Actually Fixes, and What It Doesn't

April 10, 2025

6 min read

Fine-tuning changes how a model behaves, not what it knows. Here is what it costs, what LoRA changes about that, and the cases where it is the wrong tool entirely.

ai

llm

fine-tuning

machine-learning

development

LLM vs RAG - Knowing Which One Your Problem Actually Needs

April 5, 2025

6 min read

A base model knows a lot but nothing about you, and nothing since its training cutoff. Retrieval fixes one of those problems and not the other — here is how to tell which one you have.

ai

llm

rag

machine-learning

technology

Posts tagged “machine-learning”

I Built a Prediction Engine for a World Cup I Never Watched

Fine-Tuning an LLM - What It Actually Fixes, and What It Doesn't

LLM vs RAG - Knowing Which One Your Problem Actually Needs