Returns VS Log-Returns Load the quantmod package to retrieve financial data (see tutorial on Data Acquisition in R). # load the "quantmod" package require('quantmod') Get Apple stock quotes (daily). # get quotes AAPL

Introduction New hospital admissions Overall By period Zooming in Patients in hospitals Patients in intensive care Confirmed cases By province By age group and sex Static Dynamic By age group, sex and province Introduction Note 1: The prese...

Introduction New hospital admissions New confirmed cases Introduction This is a joint work with Prof. Niko Speybroeck and Angel Rosas-Aguirre. Belgium recently started to lift its lockdown measures initially imposed to contain the spread of the...

AdaOpt (a probabilistic classifier based on a mix of multivariable optimization and a nearest neighbors) for R

The Riddler was sort of feeling the rising boredom of being under lockdown when proposing the following variant to the Monty Hall puzzle: There are zero to three goats, with a probability ¼ each, and they are allocated to different doors uniformly among the three doors of the show. After the ...

At this post, we will show you how you easily apply Stacked Ensemble Models in R using the H2O package. ... Read moreHow to build Stacked Ensemble Models in R

Are you interested in guest posting? Publish at DataScience+ via your RStudio editor. Category Advanced Modeling Tags Predictive Modeling R Programming Random Search Shiny I have discovered a new package (at least to me) named Machine Learning Models and Tools for R. The author of this package Brian J Smith ...

Lately I’ve been publishing screencasts demonstrating how to use the tidymodels framework, starting from just getting started. Today’s screencast explores a more advanced topic in how to tune an XGBoost classification model using with this week’s #TidyTuesday dataset on beach volleyball. ???? Here is the code I used ...

Modern Rule-Based Models Machine learning models come in many shapes and sizes. While deep learning models currently have the lion’s share of coverage, there are many other classes of models that are effective across many different problem domains. This post gives a short summary of several rule-based models that ...

If you have been tracking the numbers for the COVID-19 pandemic, you must have looked at dozens of models and tried to make some comparisons. Even under the best of situations it is difficult to compare models, and this is especially true if you don’t have sufficient domain knowledge. ...

R 4.0.0 has been out for a while, now, and — apart from a case where merge() was slower than dirt — it’s been really stable for at least me (I use it daily on macOS, Linux, and Windows). Sure, it came with some headline-grabbing features/upgrades, but I’ve started looking ...

A Riddler riddle I possibly misunderstood: Four isolated persons are given four fair coins, which can be either flipped once or returned without being flipped. If all flipped coins come up heads, the team wins! Else, if any comes up tails, or if no flip at all is done, it ...

Joe Friel reposted an article earlier this year on Efficiency Factor in running. Efficiency Factor (EF) can be viewed in Training Peaks software and he describes how it is calculated. This post describes how I went about calculating EF in R using a single gpx file. What is Efficiency Factor (...