April 2020

PyBoy: A Python GameBoy Emulator

April 28, 2020 | 0 Comments

If you are looking for a project to build a bot or AI application, look no further. Enter the stage, PyBoy, a Nintendo Game Boy (DMG-01 [1989]) written in Python 2.7. The implementation runs in almost pure Python, but with dependencies for drawing graphics and getting user interactions through SDL2 and NumPy. ...
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Free Springer Books during COVID19

April 24, 2020 | 0 Comments

Book publisher Springer just released over 400 book titles that can be downloaded free of charge following the corona-virus outbreak. Here’s fhe full overview: https://link.springer.com/search?facet-content-type=%22Book%22&package=mat-covid19_textbooks&facet-language=%22En%22&sortOrder=newestFirst&showAll=true Most of these books will normally set you back about $50 ...
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Risk premia

April 24, 2020 | 0 Comments

Our last post discussed using the discounted cash flow model (DCF) as a method to set return expectations that one would ultimately employ in building a satisfactory portfolio. We noted that if one were able to have a reasonably good estimate of the cash flow growth rate of an asset, ...
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Recreating a Shiny App with Flask

April 21, 2020 | 0 Comments

So RStudio Connect has embraced Python and now runs Flask applications! At Jumping Rivers we make a lot of use of R, shiny, and Python for creating visual tools for our clients. Shiny has a lot of nice features, in particular it is very fast for prototyping web applications. Over ...
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Building a Rule-based Chatbot in Python

April 15, 2020 | 0 Comments

Rule-based chatbots are one of the earliest types of chatbots developed - dating back to the early 1960s. In the second part of this series on chatbots, we take a deeper look into how these chatbots work and how we can build one in Python.
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Discounted expectations

April 15, 2020 | 0 Comments

After our little detour into GARCHery, we’re back to discuss capital market expectations. In Mean expectations, we examined using the historical average return to set return expectations when constructing a portfolio. We noted hurdles to this approach due to factors like non-normal distributions, serial correlation, and ultra-wide confidence intervals. ...
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Predictive Maintenance: Zero to Deployment in Manufacturing

April 7, 2020 | 0 Comments

Predictive maintenance has been seen as a holy grail for cost cutting manufacturing. There are various steps involved in just feasibility study such as problem identification, sensor installation, signal processing, feature extraction and analysis, and finally modeling. Once a reliable and robust model is developed, the model has to be ...
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Curated Regular Expression Resources

April 7, 2020 | 0 Comments

Regular expression (also abbreviated to regex) really is a powertool any programmer should know. It was and is one of the things I most liked learning, as it provides you with immediate, godlike powers that can speed up your (data science) workflow tenfold. I’ve covered many regex related topics ...
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