Tag: News

Feed: R-bloggers. Author: Maëlle Salmon. At my day job I’m a data manager and statistician for an epidemiology project called CHAI lead by Cathryn Tonne. CHAI means “Cardio-vascular health effects of air pollution in Telangana, India” and you can find more about it in our recently published protocol paper . At my institute you could also find the PASTA and TAPAS projects so apparently epidemiologists are good at naming things, or obsessed with food… But back to CHAI! This week Sean Lopp from RStudio wrote an interesting blog post about internal packages. I liked reading it and feeling good because ... Read More

Feed: R-bloggers. Author: John Mount. seplyr is an R package that makes it easy to program over dplyr 0.7.*. To illustrate this we will work an example. Suppose you had worked out a dplyr pipeline that performed an analysis you were interested in. For an example we could take something similar to one of the examples from the dplyr 0.7.0 announcement. suppressPackageStartupMessages(library("dplyr")) packageVersion("dplyr") ## [1] '0.7.2' cat(colnames(starwars), sep='n') ## name ## height ## mass ## hair_color ## skin_color ## eye_color ## birth_year ## gender ## homeworld ## species ## films ## vehicles ## starships starwars %>% group_by(homeworld) %>% summarise(mean_height = ... Read More

Feed: R-bloggers. Author: Peter's stats stuff - R. I recently read the high quality book Global Inequality by Branko Milanovic. When reading this sort of thing, I often find I can increase my engagement with a topic by playing around with the data myself. In this day and age, this is much more likely to be possible than a couple of decades back! I remember when I first studied development economics, typing into Lotus 123 the data from tables in the back of a World Development Report. These days to get the same data we just fire up R and ... Read More

Feed: Planet MySQL; Author: Baron Schwartz (xaprb); Mon, Jul 10, 2017 in Databases Humor The removal of the query cache in MySQL 8.0 improves user experience and has been celebrated by many members of the MySQL community. With this good news, obviously, Hitler isn’t happy. (Parody Video). I'm Baron Schwartz, the founder and CEO of VividCortex. I am the author of High Performance MySQL and lots of open-source software for performance analysis, monitoring, and system administration. I contribute to various database communities such as Oracle, PostgreSQL, Redis and MongoDB. More about me. Comments ... Read More

Feed: Hadoop – Cloudera Engineering Blog. Author: Justin Kestelyn. Welcome to our fourth edition of “This Month in the Ecosystem,” a digest of highlights from October 2013 (never intended to be comprehensive; for completeness, see Hadoop Weekly). For generating sheer excitement, that month installed a high bar to meet in the future: Hadoop 2 Became Stable with the 2.2 (“GA”) ReleaseThe idea that this news could be done justice in a few sentences strains credulity. (Furthermore, it has been covered elsewhere widely and thoroughly at this point.) Suffice to say here that this release will transform the Big Data ecosystem ... Read More

Feed: Hadoop – Cloudera Engineering Blog. Author: Justin Kestelyn. We are just a weekend away from the Biggest. Strata + Hadoop World. Ever. Not to make non-attendees feel bad — the show sold out a couple weeks ago — but some great things are in store for technical end-users (as well as everyone else): Hear keynotes from Mike Olson and Doug Cutting: Be prepared to hear two of the most influential voices in Big Data make some Big News.  Learn “How to Develop a Hadoop Data Application” (via the CDK) from Tom White, Eric Sammer, and Joey Echeverria. No pressure! The ... Read More

Feed: Cognitive Class Author: Janice Darling Posted on May 30, 2017 by Janice Darling Here’s this week’s news in Data Science and Big Data. Don’t forget to subscribe if you find this useful! Interesting Data Science Articles and News Featured Courses From Cognitive Class Upcoming Data Science Events Big Data Toronto 2017 –June 20, 2017 – June 21, 2017 all-day Metro Toronto Convention Center, 255 Front Street West Toronto, Ontario M5V 2W6 Canada Share this: Related Tags: analytics, Big Data, data science, events, weekly roundup ... Read More

Feed: Cognitive Class Author: Janice Darling Posted on May 23, 2017 by Janice Darling Here’s this week’s news in Data Science and Big Data. Don’t forget to subscribe if you find this useful! Interesting Data Science Articles and News Upcoming Data Science Events Featured Courses From Cognitive Class Share this: Related Tags: analytics, Big Data, data science, weekly roundup ... Read More

Feed: R-bloggers. Author: R Views. This is the third post in our series on portfolio volatility, variance and standard deviation. If you want to start at the beginning with calculating portfolio volatility, have a look at the first post here – Intro to Volatility. The second post on calculating rolling standard deviations is here: Intro to Rolling Volatility. Today we will visualize rolling standard deviations with highcharter using two objects from that second post. The charts, which are the fun payoff after all of the equations and functions that we have ground out in the previous posts, should highlight any ... Read More

Feed: Planet big data. Author: David Smith. Cryptocurrencies have been in the news quite a bit lately. Bitcoin prices have been soaring recently after the community narrowly avoided the need for a fork, while $32M in rival currency Etherium was recently stolen, thanks to a coding error in wallet application Purity. But what is a crypto-currency, and what does a "wallet" or a "fork" mean in that context? The video below gives the best explanation I've seen for how cryptocurrencies work. It's 25 minutes long, but it's a complex and surprisingly subtle topic, made easy to understand by math explainer ... Read More