October 2019

upcoming AI-related courses

October 15, 2019 | 0 Comments

I forgot to do some marketing for the following upcoming AI-related courses which will be given in Leuven, Belgium by BNOSAC 2019-10-17&18: Statistical Machine Learning with R: Subscribe here 2019-11-14&15: Text Mining with R: Subscribe here 2... [Read more...]

Parsing Sda Pages

October 15, 2019 | 0 Comments

SDA is a suite of software developed at Berkeley for the web-based analysis of survey data. The Berkeley SDA archive (http://sda.berkeley.edu) lets you run various kinds of analyses on a number of public datasets, such as the General Social Survey. It also provides consistently-formatted HTML versions of ... [Read more...]

Super Solutions for Shiny Apps #4 of 5: Using R6 Classes

October 15, 2019 | 0 Comments

TL;DR Why use object-oriented programming in Shiny applications? It’ll help organizize organize the code in your application!   Organize Your Shiny Code with Object-Oriented Programming Classes are used widely in all R programming — usually the S3 ones. Even if you’ve never heard of them, as an R user ...
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Simulating data with Bayesian networks

October 15, 2019 | 0 Comments

Bayesian networks are really useful for many applications and one of those is to simulate new data. Bayes nets represent […] The post Simulating data with Bayesian networks appeared first on Daniel Oehm | Gradient Descending. [Read more...]

Could you be the next graduate Mango?

October 15, 2019 | 0 Comments

At Mango, we firmly believe that any decision can be better made using analytics and data. We also know that a company’s success is increasingly dependent on becoming data-driven. That’s where we come in. Our mission is to empower organisations to make informed decisions using data science and ... [Read more...]

JAMA retraction after miscoding – new Finalfit function to check recoding

October 15, 2019 | 0 Comments

Riinu and I are sitting in Frankfurt airport discussing the paper retracted in JAMA this week. During analysis, the treatment variable coded [1,2] was recoded in error to [1,0]. The results of the analysis were therefore reversed. The lung-disease self-management program actually resulted in more attendances at hospital, rather than fewer as ... [Read more...]

Finding free science books from Springer

October 15, 2019 | 0 Comments

Today the biggest book fair of the world starts again in Frankfurt, Germany. I thought this might be a good opportunity to do you some good! Springer is one of the most renowned scientific publishing companies in the world. Normally, their books are quite expensive but also in the publishing ... [Read more...]

Merge MLP And CNN in Keras

October 14, 2019 | 0 Comments

In the post (https://statcompute.wordpress.com/2017/01/08/an-example-of-merge-layer-in-keras), it was shown how to build a merge-layer DNN by using the Keras Sequential model. In the example below, I tried to scratch a merge-layer DNN with the Keras functional API in both R and Python. In particular, the merge-layer DNN is ...
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Shiny 1.4.0

October 14, 2019 | 0 Comments

Shiny 1.4.0 has been released! This release mostly focuses on under-the-hood fixes, but there are a few user-facing changes as well. If you’ve written a Shiny app before, you’ve probably encountered errors like this: div("Hello", "world!", ) #__ Error in tag("div", list(...)) : argument is missing, with no default This ... [Read more...]

What are Your Use Cases for rOpenSci Tools and Resources?

October 14, 2019 | 0 Comments

We want to know how you use rOpenSci packages and resources so we can give them, their developers, and your examples more visibility. It’s valuable to both users and developers of a package to see how it has been used “in the wild”. This goes a long way to ... [Read more...]

Selection bias, death, and dying

October 14, 2019 | 0 Comments

I am collaborating with a number of folks who think a lot about palliative or supportive care for people who are facing end-stage disease, such as advanced dementia, cancer, COPD, or congestive heart failure. A major concern for this population (which really includes just about everyone at some point) is ...
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Assess Variable Importance In GRNN

October 13, 2019 | 0 Comments

Technically speaking, there is no need to evaluate the variable importance and to perform the variable selection in the training of a GRNN. It’s also been a consensus that the neural network is a black-box model and it is not an easy task to assess the variable importance in ...
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Making a background color gradient in ggplot2

October 13, 2019 | 0 Comments

I was recently making some arrangements for the 2020 eclipse in South America, which of course got me thinking of the day we were lucky enough to have a path of totality come to us. We have a weather station that records local temperature every 5 minutes, so after the eclipse I ...
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Did Russia Use Manafort’s Polling Data in 2016 Election?

October 13, 2019 | 0 Comments

Introduction:On August 2, 2016 then Trump campaign manager, Paul Manafort, gave polling data to Konstantin Kalimnik a Russian widely assumed to be a spy. Before then Manafort ordered his protege, Rick Gates, to share polling data with Kilmnik. Gates periodically did so starting April or May. The Mueller Report stated it ...
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Using R: Animal model with simulated data

October 13, 2019 | 0 Comments

Last week’s post just happened to use MCMCglmm as an example of an R package that can get confused by tibble-style data frames. To make that example, I simulated some pedigree and trait data. Just for fun, let’s look at the simulation code, and use MCMCglmm and AnimalINLA ...
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Rename Columns | R

October 13, 2019 | 0 Comments

Often data you’re working with has abstract column names, such as (x1, x2, x3…). Typically, the first step I take when renaming columns with r is...
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easyMTS: My First R Package (Story, and Results)

October 12, 2019 | 0 Comments

This weekend I decided to create my first R package… it’s here! https://github.com/NicoleRadziwill/easyMTS Although I’ve been using R for 15 years, developing a package has been the one thing slightly out of reach for me. Now that I’ve been through the process once, with ... [Read more...]
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