hello world

My name is Aleksander Molak. Friends call me Alex. My mission is to translate complex concepts into understandable bite-size pieces and share them with you.I am an independent machine learning researcher, author, consultant, educator and an entrepreneur.I am specialized in causality, natural language processing (NLP) and AI startegy.

Blog & Talk

Selected Blog Posts

Selected Talks & Workshops


The Battle of Giants - Causality vs NLP - From Theory to Practice (Workshop)
PyConDE & PyData Berlin 2023


Causal Inference in Python: Estimating Causal Effects (Keynote)
KI Fabrigk Konferenz, Ingolstadt


Practical Causal Discovery in Python
Data Science Summit ML Edition, Warsaw


Practical graph neural networks in Python with TensorFlow and Spektral (Workshop)
PyConDE & PyData Berlin 2022


Causality: An Introduction
PyData Hamburg


Causal Disovery in Python
GHOST Day Applied ML Conf 2022


What should I buy next? How to leverage word embeddings to build an efficient recommender system
PyData Tel Aviv 2021


Modeling aleatoric and epistemic uncertainty using Tensorflow and Tensorflow Probability
PyData Global 2021

Causal Book

Causal Inference and Discovery in PythonDemystify causal inference and casual discovery by uncovering causal principles and merging them with powerful machine learning algorithms for observational and experimental data.

Causal Inference and Discovery in Python is a triple #1 Hot New Release and #1 Best seller on Amazon.

To learn more about causality, subscribe to weekly casual emails: causalpython.io

AI training for effective teams

How to help your team efficiently learn a new technology so they can start solving your most pressing problems from Day 1?
Compress months into hours with lespire.io trainings

Consulting & Advisory

I was lucky to work with some of the best companies in the world. Combining my experience from working with Fortune 100, Fortune 500 and Inc 5000 companies with my background in organizational and experimental psychology has given me a unique perspective on what drives success and what pitfalls to avoid.I helped organizations shape their AI strategy, structure their AI teams effectively, increase their productivity, predictability of the outcomes and innovativeness. I am proud to be the main author of a $1M+ innovation grant and multiple sales process improvements for AI products.Let's make your AI strategy crisp and your data science team more effective than ever!Visit Lespire Consulting to learn more.Or drop me an email!