Jens Laufer
writes about Software Development, Data Science, Entrepreneurship, Traveling and Sports

qraptor Technology Stack Part One: Architecture and Programming Languages

The technology stack and programming languages we use for our reinforcement learning based trading platform

Qraptor’s team members have a wide variety of technology backgrounds. I’d say our team is polyglot from the perspective of the programming languages the members know. Besides our data science know-how, we have a strong background in software engineering. What we have learned in countless corporate software projects is that it’s a mistake to push... Read more

What are some steps to make an idea into a product?

First and foremost: Do not fall into the trap of doing product development for months for a product nobody wants. Know your customers and know where they are hanging around from day 1. Follow these steps: 1. Answer the question: Who are your customers, and where are they? You need to identify your marketing channels for your idea. Before st... Read more

Practical example of Training a Neural Network in the AWS cloud with Docker

How to train a shallow neural network on top of an InceptionV3 model on CIFAR-10 within Docker on an AWS GPU-instance

My last article Example Use Cases of Docker in the Data Science Process was about Docker in Data Science in general. This time I want to get my hands dirty with a practical example. In this case study, I want to show you how to train a shallow neural network on top of a deep InceptionV3 model on CIFAR-10 images within a Docker container on AWS... Read more

Make A Living in Data Science and Not Trading Time for Money

5 product ideas for Single Person Entrepreneurs

You made yourself a plan. You want to make a living in Data Science. Well, why aren’t you applying for a data science job then? There are tons of them right now, as we all know data science is hot right now. You tell me that you want to create a valuable, repeatable and scalable business model and you don’t want to trade time for money. I te... Read more

Example Use Cases of Docker in the Data Science Process

...or how to avoid the It-works-on-my-computer-but-nowhere-else-problem

The excellent comic by Jeff Lofvers illustrates what you often face in software development but also in data science. You are preparing a data analysis or predictive model, but when you want to share it, then it does not work on someone else machine. It fails, because libraries are missing, libraries are having the wrong version (“dependency ... Read more