Tag: statistics

Feed: R-bloggers. Author: R on datawookie. Related To leave a comment for the author, please follow the link and comment on their blog: R on datawookie. 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) statistics (regression, PCA, time series, trading) and more... If you got this far, why not subscribe for updates from the site? Choose your flavor: e-mail, twitter, RSS, or facebook ... Read More

Feed: Planet big data. Author: James Staten. Every company needs edge computing on its technology road map starting in 2019. While many of you may see edge as exclusive to IoT, its value is much wider and will prove as critical to driving up customer experience as content delivery networks (CDN) were in the early days of the web . . . . . . which explains why you are now seeing edge compute and AI services from all the major cloud vendors and on the road maps of the leading telecom companies. Twenty-seven percent of global telecom decision makers, ... Read More

Feed: R-bloggers. Author: R on kieranhealy.org. Data Visualization: A Practical Introduction will begin shipping next week. I’ve written an R package that contains datasets, functions, and a course packet to go along with the book. The socviz package contains about twenty five datasets and a number of utility and convenience functions. The datasets range in size from things with just a few rows (used for purely illustrative purproses) to datasets with over 120,000 observations, for practicing with and exploring. A course packet is also included the package. This is a zipped file containing an R Studio project consisting of nine ... Read More

Feed: Big Data Made Simple. Author: Alyssa Johnson. Cloud computing skills are in high demand right now. However, on the down-side, statistics have shown that there is a shortage of cybersecurity professionals. Today, 40 percent of businesses are looking for ways to find employees who are qualified in this kind of computing.  By 2019, there will be 1.5 million job openings and the talent market are not expected to catch up to this demand. However, that doesn’t stop educators and organizations from bridging that gap. Thousands of quality resources are available to help both established engineers and budding techies get ... Read More

Feed: SAS Blogs. Author: Rick Wicklin. This article describes best practices and techniques that every data analyst should know before bootstrapping in SAS. The bootstrap method is a powerful statistical technique, but it can be a challenge to implement it efficiently. An inefficient bootstrap program can take hours to run, whereas a well-written program can give you an answer in an instant. If you prefer "instants" to "hours," this article is for you! I’ve compiled dozens of resources that explain how to compute bootstrap statistics in SAS. Overview: What is the bootstrap method? Recall that a bootstrap analysis enables you ... Read More

Feed: R-bloggers. Author: Jakob Gepp. We at STATWORX work a lot with R and we often use the same little helper functions within our projects. These functions ease our daily work life by reducing repetitive code parts or by creating overviews of our projects. At first, there was no plan to make a package, but soon I realised, that it will be much easier to share and improve those functions, if they are within a package. Up till the 24th December I will present one function each day from helfRlein. So, on the 12th day of Christmas my true love ... Read More

Feed: Blog. Author: leopicasso; Today’s blog post concludes our four-part look into SQL performance and optimization. Part one introduced and explained relational optimization; part two reviewed query analysis and introduced single-table access path formulation; part three took a look at multi-table SQL optimization… and today we conclude with a quick overview of several additional aspects of SQL optimization that we have yet to discuss.Using Indexes to Avoid Sorts To satisfy certain types of SQL requests it may be necessary for the DBMS to sort data. But sorting is cost prohibitive and should be avoided if at all possible. The relational ... Read More

Feed: R-bloggers. Author: Sean Justice. Motivation for Project Around the time that I was selecting a topic for this project, my parents and my hometown found themselves in the path of a Category 1 hurricane. Thankfully, everyone was ok, and there was only minor damage to their property. But this event made me think about how long it had been since the last time my hometown had been in the path of a Category 1 hurricane. I also wanted to study trends in hurricane intensity over time to see if it corresponds to the popular impression that storms have grown ... Read More

Feed: R-bloggers. Author: Daniel Marcelino's Blog. I have several tables that I would like to load as a sole data frame. Derived functions from read. table () have a lot of convenient features, but it seems like there is a lot of steps in the implementation that would slow things down. The gain in performance of reading 29 CSV files (about 2.2 GB) shows quite different picture. While the parallelization process does bring some improvement considering the ‘user time’, i.e. the CPU time charged for the process execution at the machine level, the ‘elapsed time’, i.e. the ‘real’ elapsed time ... Read More

Feed: R-bloggers. Author: kjytay. I’m a casual NBA fan: I don’t have time to watch the games but enjoy viewing the highlights on Instagram/Youtube (especially Shaqtin’ A Fool!); I sometimes read game articles and analyses (e.g. Blogtable). Apart from the game being an amazing visual spectacle, it’s fun to drink in the deluge of stats that each game brings. I’m not even talking about advanced stats and “ABPRmetrics“: there’s something exciting about seeing how many different statistical records can be broken on a given night. As a data/stats person, I’ve been wanting to get my hands on NBA data and ... Read More