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Tuesday, 1 September 2026 · LondonENع
Rayan Azhari.Sustainability · Energy · Carbon · Built EnvironmentOccasional detours into philosophy, religion or programming, wherever curiosity leads
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Article 13: Why I Used Linear Regression Over Random Forest on 6,000 Buildings: A Modelling Walkthrough

A series mining the PhD thesis London and UK Office Buildings: Investigating Energy Use and Landlord-Tenant Influences (Azhari, 2025). Random Forest and a simple linear regression finished in a statistical dead heat on electricity EUI, so interpretability tipped the decision to the simpler model.

By Rayan Azhari · 11 min read · Essays
Latest Essays

Better Than Assad Is the Minimum, Not the Dream

One argument recurs constantly in Syrian conversation today, and it is true in much of what it claims: "there are problems, but things are better than they were under Assad". The problem begins the moment it stops describing reality and starts answering every question. This piece separates the question of how far we have come from the question of where we are going, distinguishes rights that need capacity from rights that need only a decision, and sets out a floor of demands that needs no budget and no ten years.

The Deflated Sharpe Ratio: Why Your Grid-Search Winner Is Probably Noise

The expected best Sharpe of a parameter sweep climbs as the grid grows, even when every strategy in it is worthless. Here is the deflated Sharpe ratio explained as a practitioner sees it, with a small N to noise-ceiling lookup table you can apply to your own sweep tonight, and the one rule that killed my proudest grid-search winner: N is the pool, not the podium.

· 9 min

Article 09: NABERS for Britain? Lessons from Australia on Operational Rating

A series mining the PhD thesis “London and UK Office Buildings: Investigating Energy Use and Landlord-Tenant Influences” (Azhari, 2025). Key takeaway. Australia NABERS rates buildings on what they actually use and makes ratings mandatory for office disclosure. The UK is part-way there with NABERS-UK and the DEC, but missing the policy backbone.

· 9 min

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