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The Next AI Bottleneck Isn’t the Model: It’s the Inference System

I’ve seen a lot when I’m working with enterprise AI teams: they nearly always blame the model when something goes wrong. This is understandable, but it’s also frequently incorrect, and it ends up being quite costly. The usual scenario is as follows. The outputs are inconsistent; when someone raises it, the first reaction is to …

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How AI Agents Will Transform Data Science Work in 2026

  Contents# Introduction# What Exactly Is an AI Agent?# Will Data Science Be Replaced by AI in the Future?# What Is the Trend in Data Science in 2026? Shifting to Agentic Workflows# What Will AI Be Like in 2026? Becoming a Collaborative Partner# Conclusion # Introduction  The world of data science moves fast. If you are just starting your journey in 2026, …

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From Vibe Coding to Spec-Driven Development

I in my previous article, “From Code to Insights: Software Engineering Best Practices for Data Analysts”, that engineering skills and best practices can be incredibly useful for analysts and other data professionals. This is even more true now in the AI era, when we have far more opportunities to build our own analytical tools: from …

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Guardrails for LLMs: Measuring AI ‘Hallucination’ and Verbosity

  Contents# Introduction# Setting a Complexity Budget with Textstat# Implementing the LangChain Pipeline# Wrapping Up # Introduction  Large language models (LLMs) have a taste for using “flowery”, sometimes overly verbose language in their responses. Ask a simple question, and chances are you may get flooded with paragraphs of overly detailed, enthusiastic, and complex prose. This usual behavior is rooted in …

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Batch or Stream? The Eternal Data Processing Dilemma

any time in the data engineering world, you’ve likely encountered this debate at least once. Maybe twice. Ok, probably a dozen times😉 “Should we process our data in batches or in real-time?” And if you’re anything like me, you’ve noticed that the answer usually starts with: “Well, it depends…” Which is true. It does depend. But “it …

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Stop Wasting Tokens: A Smarter Alternative to JSON for LLM Pipelines

  Contents# Introduction# Why JSON Wastes Tokens in LLM Pipelines# What TOON Actually Is and When It Is Worth Using# Getting Started with TOON# Final Thoughts # Introduction  JSON is great for APIs, storage, and application logic. But inside large language model (LLM) pipelines, it often carries a lot of token overhead that does not add much value to the model: …

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kdn building modern eda pipelines with pingouin

Building Modern EDA Pipelines with Pingouin

  Contents# Introduction# Initial Setup# Checking Univariate Normality# Checking Multivariate Normality# Checking Homoscedasticity# Checking Sphericity# Checking Multicollinearity# Wrapping Up # Introduction  Anyone who has spent a fair amount of time doing data science may sooner or later learn something: the golden rule of downstream machine learning modeling, known as garbage in, garbage out (GIGO). For example, feeding a linear regression model with highly collinear …

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When the Uncertainty Is Bigger Than the Shock: Scenario Modelling for English Local Elections

Across 64 English authorities and six 2026 scenarios, even the strongest scenario shock was only 13% of the median uncertainty band. In plain English: the model’s assumptions moved the result less than historical forecast error did. The most aggressive challenger surge I could parameterise sits inside the noise the model has produced in past elections. …

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Baptists and Bootleggers: The Hidden Coalition Behind ‘Data-Driven’ Decisions

  Contents# Introduction# Bootleggers and Baptists# Why the Coalition Works So Well# Learning to Tell Them Apart# Final Thoughts # Introduction  Every organization loves to call itself “data-driven.” It’s become the gold standard of credibility, the thing you say to shut down dissent in a meeting. But here’s something worth sitting with for a second: the phrase “according to data analytics” …

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