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Didact AI: The anatomy of an ML-powered stock picking engine
v1.0 - Initial draft
What I’ll talk about #
I started Didact AI in 2019, out of a firm belief that stock picking engines built on top of machine learning models could consistently beat the market, gaining and retaining profits.
I worked on this idea full-time for 2 years, from 2019 to 2021, building...
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What I've Learned from Users
| |
September 2022
I recently told applicants to Y Combinator that the best advice I
could give for getting in, per word, was
Explain what you've learned from users.
That tests a lot of things: whether you're paying attention to
users, how well you understand them, and even how much they need
what y...
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Number theory explained from first principles
Number theory
explained from first principles
Cite this article
You can cite this article in various citation styles as follows:
| MLA: | Etter, Kaspar. “Number theory explained from first principles.” Explained from First Principles, 17 Sep. 2022, https://explained-from-first-principles.com/number-...
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TIL—Python has a built-in persistent key-value store
Python is, in a lot of ways, a very rich language. After years of using it, I still regularly discover new parts of the ecosystem, even in the standard library. In particular, there are a few modules which are not very well-known, but can be very useful in some situations. Today I discovered dbm
a p...
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A development process startup founders should use to ship features weirdly fast
Being able to build products fast is a huge advantage at any stage of the company. As a founder, you always want to get things done to grow your startup and please your customers.
Over the past few years, I had an opportunity to work with many 0-4-year-old companies and I’ve been surprised that many...
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Write Your Own Task Queue
Write Your Own Task Queue
This is not a tutorial on how to write your own task queue, but rather an attempt to convince you that you should write your own.
What’s a “task queue” in this context? For the purposes of this post, a task queue is a system for performing work out of band from a user inter...
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The Map Is Not the Territory
The following is an edited excerpt from The Great Mental Models Volume 1: General Thinking Tools
The map of reality is not reality. Even the best maps are imperfect. That’s because maps are reductions of what they represent. If a map were to represent the territory with perfect fidelity, it would no...
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The Tyranny of the Wagon Equation: Pre-Gunpowder Military Logistics and the Minimum Donkey Rate
The Tyranny of the Wagon Equation: Pre-Gunpowder Military Logistics and the Minimum Donkey Rate
A mathematical extension to ACOUP's recent blog post on military logistics
The Problem
While reading Bret Devereaux’s excellent blog, A Collection of Unmitigated Pedantry (ACOUP), I came across this artic...
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Remotely Controlled Lawn Tractor
- Published on
Remotely Controlled Lawn Tractor
History
A quick look back at the project's origin, its progression, technology choices, and issues that plagued the first iteration of the project.
Unfortunately, I didn't document the progress of the project as I was building it. I started throwing id...
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Hypothesis 6.135.29 documentation
Welcome to Hypothesis!¶
Hypothesis is the property-based testing library for Python. With Hypothesis, you write tests which should pass for all inputs in whatever range you describe, and let Hypothesis randomly choose which of those inputs to check - including edge cases you might not have thought a...
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Uncommon Uses of Python in Commonly Used Libraries
To learn how to build more maintainable and usable Python libraries, I’ve been reading some of the most widely used Python packages. Along the way, I learned some things about Python that are off the beaten path. Here are a few things I didn’t know before.
super()
in base classesPython’s super()
let...
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Precision and recall
In pattern recognition, information retrieval, object detection and classification (machine learning), precision and recall are performance metrics that apply to data retrieved from a collection, corpus or sample space.
Precision (also called positive predictive value) is the fraction of relevant in...
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Engineering Festivus
Small Addition To The Product Roadmap
The Year Of Linux On The Desktop
Yet Another JavaScript Framework
Collecting Cables and Adapters
XML Editing While Encoding A Video
Searching For A Solution On The Internet
Friday Deployment Adventures
New Social Media Features In 2020
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Process Behaviour Anomaly Detection Using eBPF and Unsupervised-Learning Autoencoders
Process Behaviour Anomaly Detection Using eBPF and Unsupervised-Learning Autoencoders
Hello everybody, I hope you’ve been enjoying this summer after two years of Covid and lockdowns :D In this post I’m going to describe how to use eBPF syscall tracing in a creative way in order to detect process beh...
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Machine Learning textbook
Machine Learning is the study of computer algorithms that improve
automatically through experience.
This book provides a single source introduction to the field. It is written for advanced undergraduate and graduate students, and for developers and researchers in the field. No prior background in ar...
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Second-Order Thinking: What Smart People Use to Outperform
Understanding how to think things through – to push your mind past the first step – can help you solve problems, avoid problems, and take better actions.
The best way to examine the long-term consequences of our decisions is to think things through. This is called use second-order thinking.
It’s oft...
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Choose the Right Python Concurrency API - Super Fast Python
How to Choose the Right Python Concurrency API
Python standard library offers 3 concurrency APIs.
How do you know which API to use in your project?
In this tutorial, you will discover a helpful step-by-step procedure and helpful questions to guide you to the most appropriate concurrency API.
After r...
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Algorithms you should know before you take system design interviews
I put together a list and explained why they are important. Those algorithms are not only useful for interviews but good to understand for any software engineer.
One thing to keep in mind is that understanding “how those algorithms are used in real-world systems” is generally more important than the...
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Mental Model Practices | Mental Model Practices
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10-10-10 Rule
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Better decisions
| Frame of the outcome of a decision across three timeframes.
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5 Whys
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Understand core reason
| Asking why multiple times helps us understand the core reason
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Acceptance
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Decrease negative emotions - Stop judging
| Accepting as it is decreases all the negat...
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Want to Learn about Entrepreneurship, as a Software Engineer? Sell Something Online.
Want to Learn about Entrepreneurship, as a Software Engineer? Sell Something Online.
When I decided to write and sell my first ebook, The Tech Resume Inside Out, I expected to learn about the writing process. How to create a high-quality publication. How to work with editors. Designing a cover and i...
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