iiinova — where your digital self keeps evolving

Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 21h

Amazon’s AI knows that CatBoost is all you need for machine learning on tabular data — and it’s putting serious real money behind that call. For a limited time, the book is heavily subsidized: 40% off. www.amazon.com/Maste...

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 12/10/2026

A new paper evaluates conformal prediction vs bayesianism. TL;DR conformal prediction wins 🏆 as expected www.se.cs.uni-saarla...

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 11/10/2026

Amazon is promoting Kiselev Algebra Part I. Get it with 25 percent discount whilst promotion is on www.amazon.com/Kisel... Part II is also on Amazon promotion www.amazon.com/Kisel...

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 09/10/2026

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 08/10/2026

German engineering is famous for logic. So why is German subtraction backwards? If you went to school in Germany (or Austria), you probably didn't learn "Subtraction." You learned "Completion" (Ergänzungsverfahren).

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 08/10/2026

Valeriy M., PhD, MBA, CQF @predict_addict · Jan 3 Why is India importing "messy math" from the West? India gave the world the concept of Zero and the Decimal system. Its mathematical heritage—from Aryabhata to Ramanujan—is built on mental agility, logic, and elegance.

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 08/10/2026

An american explains why Soviet math ruled the world. russianmathbooks.com

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 06/10/2026

In 1772 an eye operation left Leonhard Euler almost completely blind. He could still do the mathematics. He could not read it or write it. So he needed someone. Not a copyist — someone who could follow him. Euler turned to his old friend Daniel Bernoulli in Basel.

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 06/10/2026

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 06/10/2026

If you want to learn about NLP and LLMs the best place to start is to read Jurafsky's book - freely available online. web.stanford.edu/~ju...

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 03/10/2026

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 03/10/2026

A few parents have asked me how their child can practice arithmetic after working through Kiselev’s "Arithmetic". Mathematics is learned by solving problems. Theory without practice does not stick. Two strong options are already available: 1.

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 02/10/2026

Enrollment is open for Modern Forecasting Mastery — the highly rated course on building forecasting models and systems that work in production, not just on social media. maven.com/valeriy-ma...

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 01/10/2026

Arguably one of the best—if not the best—books on systematic trading, authored by the legendary Ernie Chan. Fun fact: my own MSc dissertation is cited in it!

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 01/10/2026

Most of adults these days won't be able ot solve a system of two linear equations, Berkely math students are 5-8 years behind and struggling with fractions whilst trying to study calculus. Yet in 17th century Russia merchants routinely solved systemt of multiple equations at scale.

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 01/10/2026

Performing math vs knowing math. That's the difference between modern textbooks and one written in 1884. A.P. Kiselev was a Russian schoolteacher who got tired of watching students struggle with verbose, overcomplicated textbooks that taught procedures without understanding.

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 01/10/2026

Delighted to pass 500 citations without working a day in academia. scholar.google.com/c... #research #machinelearning #ai #math

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 30/09/2026

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 30/09/2026

You can now build a full school math curriculum from the Kiselev track. russianmathbooks.com now has: • searchable tables of contents for every book • US / UK / Canada grade mapping • the full sequence — overlaps, textbook + problem-book pairings, and what comes next

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 29/09/2026

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 29/09/2026

Applied Conformal Prediction course is back. Sign up here to learn of the hottest machine learning topic conformal prediction maven.com/valeriy-ma...

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 29/09/2026

Enrollment is open for Modern Forecasting Mastery — the highly rated course on building forecasting models and systems that work in production, not just on social media. maven.com/valeriy-ma...

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 29/09/2026

Even supposedly prestigious universities often teach courses that are not fit for purpose and do not equip students for jobs in 2026. You don’t have to take my word for it. Look at Berkeley’s Introduction to Time Series: it teaches very little, and what it does teach is badly out of date.

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 28/09/2026

Something unusual just happened. Amazon is promoting my book — and subsidising the print cost. The full-colour premium edition is now <50% of its usual price. No promo on my side. Just the algorithm pushing it. Won’t last.

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 28/09/2026

The secret is out. Savvy U.S. parents have been putting their kids in after-school Russian Math for years. Fox 5 just put it on air for millions. www.youtube.com/watc... russianmathbooks.com

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 27/09/2026

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 26/09/2026

Enrollment is open for Modern Forecasting Mastery — the highly rated course on building forecasting models and systems that work in production, not just on social media. maven.com/valeriy-ma...

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 26/09/2026

Very nice paper. Back in 2017 Vovk and myself have published several papers introducing conformal predictive distributions and developing them for general case AI/ML?

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 25/09/2026

It's 2026… and for time series forecasting, Transformers & LLMs are STILL what you don't need. This repo has been delivering the truth for couple of years now.

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 25/09/2026

Gotta love Walmart. You can buy pretty much everything there — including great math books. Large American stores are the best in the world. Nothing even comes close. russianmathbooks.com

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 24/09/2026

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 24/09/2026

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 23/09/2026

The only way to learn math properly is to solve lots of problems. Vereshchagin’s "Collection of Arithmetic Problems: For Secondary Schools' is finally available in English for the first time — 3,238 carefully selected problems with a complete answer key. First published in 1891 by St.

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 23/09/2026

Machine learning is incredibly powerful, but that doesn’t mean ML academics can easily beat the stock market. www.youtube.com/watc...

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 23/09/2026

Enrollment is open for Modern Forecasting Mastery — the highly rated course on building forecasting models and systems that work in production, not just on social media. maven.com/valeriy-ma...

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 22/09/2026

A lot of data scientists in 2026 still either skip EDA or do it wrong. They think EDA is about making pretty charts. It is not. EDA is not a gallery of polished plots. EDA is not a box-ticking exercise before modeling. EDA is not “let’s run a few charts and move on.”

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 22/09/2026

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 21/09/2026

The most rigorously written introduction to school algebra has six chapters and 126 numbered paragraphs. Signed numbers. Polynomials. Algebraic fractions. Equations of the first degree in one, two, and three unknowns. Square roots. Quadratic equations.

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 21/09/2026

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 21/09/2026

509 pages. 478 numbered articles, each one argued before it's used. Worked examples, exercises, and a closing division of solutions. Translated in full from the 1867 edition. No adaptation, no simplification. www.youtube.com/watc... 📕 www.amazon.com/dp/19... russianmathbooks.com

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 21/09/2026

The best book in forecasting metrics is now available on Amazon in: 1) paperback (colour) -> www.amazon.com/dp/19... 2) hardcover (luxury premium colour) editions- > www.amazon.co.uk/dp/... Why forecasting metrics?

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 20/09/2026

Enrollment is open for Modern Forecasting Mastery — the highly rated course on building forecasting models and systems that work in production, not just on social media. maven.com/valeriy-ma...

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 20/09/2026

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 20/09/2026

In any forecasting project, the model is often only about 5% of the work. Getting the metrics wrong is one of the primary reasons forecasting projects fail.

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 20/09/2026

Last year’s Nation’s Report Card recorded a first: 45% of American 12th graders scored below Basic in mathematics — the highest share ever measured. Only 33% were judged academically prepared for entry-level college math, down from 37% in 2019. The instinct is to blame calculus instruction.

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 19/09/2026

People keep asking how to actually learn trigonometry properly. So I translated this excellent book: "Rectilinear Trigonometry and Goniometry" www.amazon.com/dp/18... russianmathbooks.com...

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 19/09/2026

If you want to learn trigonometry this is the book for you. 'Derzhavin's Rectilinear Trigonometry' is now for the first time available in English www.youtube.com/watc... www.amazon.com/dp/18... russianmathbooks.com...

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 19/09/2026

A short, but awesome arithmetic textbook - Rashevsky's 'Short Course in Arithmetic' This is the second book by the same author now available in English following Rashevsky's Trigonometry www.youtube.com/watc... www.amazon.com/dp/19... russianmathbooks.com Rashevsky's Trigonometry

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 18/09/2026

A new youtube video just dropped. www.youtube.com/watc...

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Valeriy M., PhD, MBA, CQF @predict-addict.bsky.social · 17/09/2026

Anyone who have followed me for long time knows I have been saying “forecasting is a game of relatives” and it applies well not only to point forecasting but also to probabilistic forecasting.

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