Mineração de Dados, Estatística, Tecnologia
Some time ago i wrote on this blog about how to dockerize a Shiny App. If you don’t know what Docker is and what i mean by “dockerizing a Shiny App” i advise you to read this post before: Dockerizing a Shiny App I used this solution to create an easy way to deploy Shiny Apps on web servers, once that, if you want to share your apps, you have to choose between three possible…
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At this post i will show you how to deploy Shiny Apps easily with a simple git push. But, what’s a git push? I’m referring to the git command used with remote repositories. With this command you can deploy apps easily with a PaaS (Platform as a Service) like Heroku. If you never heard about Heroku or know nothing about PaaS, i will show you what is it and how can we use a similar…
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After a long pause of more than four months, I am finally back to post here. Unfortunately, many commitments prevented me keep posting, but coming back, i changed the deployment (now this blog runs entirely within a docker container with some other cool things I intend to post more forward) and wrote this post. 1. R e apps Shiny If you are reading this post here, you probably know what Shiny is. OK, but in…
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OBS: There is a version in portuguese. Handwritten digit recognition task was one of first great successes of machine learning methods. Nowadays, the task can be carried out by multiple specialized libraries with very high accuracy (> 97% of correct answers), such that many times, despite of indirectly we use these features in tablets and smartphones, in general we do not know exactly how the method works. Thinking about it, as I worked with this…
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This time i will talk about how to deal with large text files in chuncks with R. Just to provide some real data to work with download Airlines data, relative to 1988; from now on i will work with this file. To work with this data i will use iterators package. This package allow you pass the file, line by line, or chunck by chunk, without really load all file to memory. As you can feel the idea…
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Inspired by this article i thought about gather here all multimedia resources that i know to learn use R. Today there is a lot of online courses, some MOOC’s too, that offer reasonable resources to start with R. I will just list the materials in sequence and offer my evaluation about them. Of course your evaluation can be different; this case fell free to comment. In the future i can update the material. Let’s begin:…
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Recently talking to a colleague, had contact with a problem that I had never worked with before: modeling with genetic data. I have no special knowledge of the subject, but taking a look at some articles in the area knew that one of the most used techniques for this type of data was the lasso. In R, one of the most used packages for the lasso is glmnet, which unlike most other packages like…
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