Tag: regression

Feed: R-bloggers. Author: Econometrics and Free Software. This blog post is an excerpt of my ebook Modern R with the tidyverse that you can read for freehere.This is taken from Chapter 8, in which I discuss advanced functional programming methods formodeling. As written just above (note: as written above in the book), map() simply applies a functionto a list of inputs, and in the previoussection we mapped ggplot() to generate many plots at once. This approach can also be used tomap any modeling functions, for instance lm() to a list of datasets. For instance, suppose that you wish to perform ... Read More

Feed: R-bloggers. Author: John Mount. [This article was first published on R – Win-Vector Blog, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don't. vtreat is a DataFrame processor/conditioner that prepares real-world data for supervised machine learning or predictive modeling in a statistically sound manner. vtreat takes an input DataFrame that has a specified column called “the outcome variable” (or “y”) that is the quantity to be predicted (and must not have missing values) ... Read More

Feed: R-bloggers. Author: r-bloggers on Machine Learning in R. First of all You may ask yourself how is this name ‘mlrPlayground’ even justified?What a person dares to put two such opposite terms in a single word and expects people to take him seriously? I assume most of you know ‘mlr’, for those who don’t: It is a framework offering a huge variety of tools for simplifying machine learning tasks in R.Quite the opposite from a place, where you can play with your best friends, make new friends, live out your fantasies and just have a great time the whole day ... Read More

Feed: R-bloggers. Author: insightr. [This article was first published on R – insightR, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don't. Introduction Today we are going to talk about quantile regression. When we use the lm command in R we are fitting a linear regression using Ordinary Least Squares (OLS), which has the interpretation of a model for the conditional mean of on . However, sometimes we may need to look at more ... Read More

Feed: Featured Blog Posts - Data Science Central. Author: Damian Widera. I have been frequently asked about the tools for the Machine Learnign projects There are lot of them on the market so in my newest post you will find my view on them. I would like to start my first Machine Learning project. But I do not have tools. What should I do? What are the tools I could use? I will give you some hints and advices based on the toolbox I use. Of course there are more great tools but you should pick the ones you like ... Read More

Feed: Featured Blog Posts - AnalyticBridge. Author: Arash Aghlara. Properly implemented Machine Learning (ML) models can have a positive effect on organizational efficiency. It is first necessary to understand how these models are created, how they function, and how they are put into production. The Definition of a Machine Learning Model When a computer is presented with questions within a particular domain, a machine learning model will run an algorithm that will enable it to resolve those questions. These algorithms are not necessarily limited to particular scenarios, but can be programmed to a higher degree of accuracy for certain types ... Read More

Feed: R-bloggers. Author: Ian Johnson. Continuing on the below post, I am going to use a support vector machine (SVM) to predict combined miles per gallon for all 2019 motor vehicles. Part 1: Using Decision Trees and Random Forest to Predict MPG for 2019 Vehicles Part 2: Using Gradient Boosted Machine to Predict MPG for 2019 Vehicles The raw data is located on the EPA government site The variables/features I am using for the models are: Engine displacement (size), number of cylinders, transmission type, number of gears, air inspired method, regenerative braking type, battery capacity Ah, drivetrain, fuel type, cylinder ... Read More

Feed: Planet MySQL; Author: Valeriy Kravchuk; It's Saturday night. I have a week of vacation ahead that I am going to spend at home, working on things I usually do not have time for. I already did something useful (created a couple of test cases for MariaDB bugs here and there, among other things), so why not to get some fun and continue my previous review of recent interesting MySQL bug report...So, here is the list of 15 more MySQL community bug reports that I've subscribed to back in May and June 2019:Bug #95491 - "The unused wake up in simulator ... Read More

Feed: R-bloggers. Author: Brian Callander. [This article was first published on Brian Callander, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your content on R-bloggers? click here if you have a blog, or here if you don't. Fitting a full Bayesian model can be slow, especially with a large dataset. For example, it’d be great to analyse the climate crisis questions in the European Social Survey (ESS), which typically has around 45,000 respondents from around Europe on a range of socio-political questions. There are two main ways of parallelising ... Read More

Feed: R-bloggers. Author: Rstats on pi: predict/infer. Mediation analysis has been around a long time, though its popularity has varied between disciplines and over the years. While some fields have been attracted to the potential of mediation models to identify pathways, or mechanisms, through which an independent variable affects an outcome, others have been skeptical that the analysis of mediated relationships can ever be done scientifically. Two developments, one more scientific than the other, have led to a renewed popularity of mediation analysis. The first, less scientific reason is that software developments have made it easier than ever to fit ... Read More