From Data Quality to AI Value: What the Evidence Shows for UK Businesses
Explore UK research, investigate data-quality problems, and test the business case with an interactive ROI calculator.
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Case studies, experiments and research notes from my work in data and machine learning.
I’m Rahul, a data analyst studying for an MSc in Artificial Intelligence and Data Science in London. I write about what I build, what the evidence shows, and what I get wrong along the way.
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4 articlesBuilding an E-Commerce AI Assistant: When SQL Meets RAG
Combining DuckDB analytics and multilingual customer-review search through Gemini tool calling, and learning how to keep generated answers grounded.
Read the case studyA Shoe Can Sell Well, but Its Sizes Might Not
How an everyday problem in my family's footwear business inspired a Python and SQL inventory analytics prototype, covering size-level alerts, sales inactivity thresholds, database design and lessons from synthetic data.
Read the case studyLogistic Regression: From Scores to Decisions
Explore sigmoid, log-odds, maximum likelihood and regularisation through clear explanations and interactive graphs. Adjust coefficients and decision thresholds to see how predictions and evaluation metrics change.
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