Tag: Library

Feed: R-bloggers. Author: Econometrics and Free Software. I have been recently confronted to the issue of finding similarities among time-series and thoughabout using k-means to cluster them. To illustrate the method, I’ll be using data from thePenn World Tables, readily available in R (inside the {pwt9} package): library(tidyverse) library(lubridate) library(pwt9) library(brotools) First, of all, let’s only select the needed columns: pwt % select(country, year, avh) avh contains the average worked hours for a given country and year. The data looks like this: head(pwt) ## country year avh ## ABW-1950 Aruba 1950 NA ## ABW-1951 Aruba 1951 NA ## ABW-1952 Aruba ... Read More

Feed: R-bloggers. Author: Rstats on Julia Silge. [This article was first published on Rstats on Julia Silge, 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. A paper I worked on was just published in a medical journal. This is quite an odd thing for me to be able to say, given my academic background and the career path I have had, but there you go! The first author of this paper is a ... Read More

Feed: R-bloggers. Author: kaijagahm. [This article was first published on woodpeckR, 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. Problem The ifelse() function only allows for one “if” statement, two cases. You could add nested “if” statements, but that’s just a pain, especially if the 3+ conditions you want to use are all on the same level, conceptually. Is there a way to specify multiple conditions at the same time? Context I was ... Read More

Feed: Recent Announcements. With improvements to “Single-Pass HQ” and “Multi-Pass HQ” using AVC (Advanced Video Coding), better video quality (VQ) can be achieved compared to previous outputs without increasing the peak bitrate, or the same VQ can be achieved with a lower peak bitrate. Greater compression efficiency reduces storage and delivery costs, and improved VQ increases viewer satisfaction. Accelerated Transcoding has two new features. First is the ability to frame capture JPEG files for jobs with Accelerated Transcoding enabled, generating thumbnails for video outputs that can be used for metadata or other purposes with the benefit of faster turnaround times ... Read More

Feed: Neo4j Graph Database Platform. Author: Mark Needham. Our team was in Ängelholm, Sweden this week, to spend some time working together which is rare as a distributed group. But especially also to run the very first Neo4j Online Developer Conference (NODES), with more than 50 sessions by speakers from 15 countries in 5 tracks. Thanks a lot to everyone who presented, contributed and helped. So we’re excited to make the first content available, Emils Keynote and announcements. In the Keynote he covered the impressive Neo4j community, Jim Webber showed a preview of 4.0 features, Michael spoke about Neo4j Labs ... Read More

Feed: R-bloggers. Author: Roel M. Hogervorst. From one representative barrel of malt extract they had taken a lot of samples. happen if they drew and averaged multiple samples. By simulating these draws from one barrel they generalized this pattern towhat would happen if they sampled from the all of the barrels.And that is what I will show in R code. Simulating drawing from a barrel First the goal in clearer language.We want to know how many samples you have to draw to know what the real degree saccharine level of the barrel is. With a 10 to 1 odds of ... Read More

Feed: R-bloggers. Author: Kristoffer Magnusson. [This article was first published on R Psychologist - R, 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. Mediation might be the ultimate example of how a method continues to be used despite a vast number of papers and textbooks describing the extremely strong assumptions required to estimate unbiased effects. My aim with this post is not to show some fancy method that could help reduce bias; rather ... Read More

Feed: R-bloggers. Author: kaijagahm. [This article was first published on woodpeckR, 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. Problem Especially in a project with many different scripts, it can be challenging to keep track of all the packages you need to load. It’s also easy to lose track of whether or not you’ve incorporated package loading into the script itself until you switch to a new computer or restart R and all ... Read More

Feed: R-bloggers. Author: R on notast. [This article was first published on R on notast, 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. We’ve covered various approaches in explaining model predictions globally. Today we will learn about another model specific post hoc analysis. We will learn to understand the workings of gradient boosting predictions. Like past posts, the Clevaland heart dataset as well as tidymodels principle will be used. Refer to the first ... Read More

Feed: AWS Big Data Blog. Amazon Redshift is a fully managed, petabyte-scale data warehouse service in the cloud that offers fast query performance using the same SQL-based tools and business intelligence applications that you use today. Many customers also like to use Amazon Redshift as an extract, transform, and load (ETL) engine to use existing SQL developer skillsets, to quickly migrate pre-existing SQL-based ETL scripts, and—because Amazon Redshift is fully ACID-compliant—as an efficient mechanism to merge change data from source data systems.In this post, I show how to use AWS Step Functions and AWS Glue Python Shell to orchestrate tasks ... Read More