Tag: Twitter

Feed: Planet MySQL; Author: Colin Charles; Colin Charles | July 13, 2018 |  Posted In: MariaDB, MySQL, MySQL 8.0, Percona Live, Prometheus PREVIOUS POST Join Percona Chief Evangelist Colin Charles as he covers happenings, gives pointers and provides musings on the open source database community. Hello again after the hiatus last week. I’m en route to Portland for OSCON, and am very excited as it is the conference’s 20th anniversary! I hope to see some of you at my talk on July 19. On July 18, join me for a webinar: MariaDB 10.3 vs. MySQL 8.0 at 9:00 AM PDT (UTC-7) / 12:00 PM EDT ... Read More

Feed: Planet MySQL; Author: ScaleGrid.io; MySQL semisynchronous replication provides improved data integrity because when a commit returns successfully, it’s known that the data exists in at least two places – the master and its slave. In this blog post, we review some of the MySQL configurations that influence the data integrity and performance aspects of semisynchronous replication. We’ll be using InnoDB storage engine and GTID-based replication in a 3-node replica set (master and 2 slaves), which will ensure there is redundancy in the slaves. This means that if there are issues with one slave, we can fall back on the ... Read More

Feed: R-bloggers. Author: Lorenz Walthert. I am currently experiencing problems with getting my posts in full length onr-bloggers. You can continue here withreading in case only the first paragraph is rendered. One cool thing that happens if you work resonates in the community is that yousee other people using it. In this blog post I am going to address a typicalquestion people have when they want to use a source code formatter – inparticular styler: I don’t like rule xyz of the tidyverse style guide, which is the defaultstyle guide implemented in styler. How can I tell styler not to ... Read More

Feed: R-bloggers. Author: R on Gianluca Baio. I was trying to find an apt image to accompany this post, but googling “sleek and shiny” mostly brought up images of women with ridiculously, well, sleek and shiny hair (and magical products to achieve just that), which has nothing to do with what I want to talk about here (not that this has ever stopped me including pics that have nothing to do with the actual post, of course…). Anyway, Andrea has been doing lots of work and has suggested an upgrade to the BCEAweb webapp, mainly involving a move towards Shiny ... Read More

Feed: R-bloggers. Author: xi'an. “We demonstrate HMC’s sensitivity to these parameters by sampling from a bivariate Gaussian with correlation coefficient 0.99. We consider three settings (ε,L) = {(0.16; 40); (0.16; 50); (0.15; 50)}” Ziyu Wang, Shakir Mohamed, and Nando De Freitas. 2013 In an experiment with my PhD student Changye Wu (who wrote all R codes used below), we looked back at a strange feature in an 2013 ICML paper by Wang, Mohamed, and De Freitas. Namely, a rather poor performance of an Hamiltonian Monte Carlo (leapfrog) algorithm on a two-dimensional strongly correlated Gaussian target, for very specific values of ... Read More

Feed: SAS Blogs. Author: Federico Alberto Pozzi. In the new era of online visual communication, when you have to be fast and clear, emojis are getting a strong relevance as the main language that allows us to communicate with anyone globally. Customers know it and brands too. Collecting and analyzing data on emojis give companies useful insights on how customers are feeling about a new product, a new campaign, or about the brand itself. Emojis can even help identify where there is a need to improve consumer engagement by picturing users’ moods, attitudes, and opinions. And to do that, companies ... Read More

Feed: R-bloggers. Author: filip Schouwenaars. The problem pkgdown is an R package that can create a beautifully looking website for your own R package. Built and maintained by Hadley Wickham and his gang of prolific contributors, this package can parse the documentation files and vignettes for your package and builds a website from them with a single command: build_site(). This is what such a pkgdown-generated website looks like in action. The html files that pkgdown generated are stored in a docs folder. If your source code is hosted on GitHub, you just have to commit this folder to GitHub, navigate ... Read More

Feed: R-bloggers. Author: nsaunders. In summary: The code that generated the report (which I’ve used heavily and written about before) is at Github too. A few changes required compared with previous reports, due to changes in the rtweet package, and a weird issue with kable tables breaking markdown headers. I love that the most popular media attachment is a screenshot of a Github repo. Related R-bloggers.com offers daily e-mail updates about R news and tutorials on topics such as: Data science, Big Data, R jobs, visualization (ggplot2, Boxplots, maps, animation), programming (RStudio, Sweave, LaTeX, SQL, Eclipse, git, hadoop, Web Scraping) ... Read More

Feed: R-bloggers. Author: Carmen Chan. These include both global methods, which involve fitting a regression over the whole time series; and more flexible local methods, where we relax the constraint by a single parametric function. Further details about how to construct estimated smooths in R can be found here. 1. Global trends over time i. Linear One of the simplest methods to identify trends is to fit the time series to the linear regression model. ii. Quadratic For more flexibility, we can also fit the time series to a quadratic expression — that is, we use linear regression with the expanded ... Read More

Feed: R-bloggers. Author: Thinking inside the box. A new maintenance release, now at version 0.9.11, of the RcppClassic package arrived earlier today on CRAN. This package provides a maintained version of the otherwise deprecated initial Rcpp API which no new projects should use as the normal Rcpp API is so much better. Per another request from CRAN, we updated the source code in four places to no longer use dynamic exceptions specification. This is something C++11 deprecated, and g++-7 and above now complain about each use. No other changes were made. CRANberries also reports the changes relative to the previous ... Read More