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@drsimonj here to show you how to conduct ridge regression (linear regression with L2 regularization) in R using the glmnet package, and use simulatio 阅读全文
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I want to give a quick tutorial on fitting Linear Mixed Models (hierarchical models) with a full variance-covariance matrix for random effects (what B 阅读全文
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Around September of 2016 I wrote two articles on using Python for accessing, visualizing, and evaluating trading strategies (see part 1 and part 2). T 阅读全文
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purrr is package that extends R’s functional programming capabilities. It brings a lot of new stuff to the table and in this post I show you some of t 阅读全文
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A Quick Overview of the ggplot2 Package in R While it will be important to focus on theory, I want to explain the ggplot2 package because I will be us 阅读全文
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Today, I want to show how I use Thomas Lin Pederson’s awesome ggraph package to plot decision trees from Random Forest models. I am very much a visual 阅读全文
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Introduction to Data Visualization – Theory, R & ggplot2 The topic of data visualization is very popular in the data science community. The market siz 阅读全文
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We are happy to finally announce the first release of mlrMBO on cran after a quite long development time. For the theoretical background and a nearly 阅读全文
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The R qgraph Package: Using R to Visualize Complex Relationships Among Variables in a Large Dataset, Part One A Tutorial by D. M. Wiig, Professor of P 阅读全文
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In this blog post I share some lesser-known (at least I believe they are) tricks that use mainly functions from dplyr. Removing unneeded columns Did y 阅读全文