Tag: R

Feed: R-bloggers. Author: Keith Goldfeld. I was recently contacted to see if simstudy can create a data set of correlated outcomes that are measured over time, but at different intervals for each individual. The quick answer is there is no specific function to do this. However, if you are willing to assume an “exchangeable” correlation structure, where measurements far apart in time are just as correlated as measurements taken close together, then you could just generate individual-level random effects (intercepts and/or slopes) and pretty much call it a day. Unfortunately, the researcher had something more challenging in mind: he wanted ... Read More

Feed: MariaDB Knowledge Base Article Feed. Author: . MariaDB replication can be used to replication between MariaDB Galera Cluster and MariaDB Server. This article will discuss how to do that. Configuring the Cluster Before we set up replication, we need to ensure that the cluster is configured properly. This involves the following steps: Configuring Wsrep GTID Mode If you want to use GTID replication, then you also need to configure some things to enable wsrep GTID mode. For example: wsrep_gtid_domain_id needs to be set to the same value on all nodes in the cluster, so that each cluster node uses ... Read More

Feed: Planet big data. Author: David Smith. RStudio Server Pro is now available on the Azure Marketplace, the company announced on the RStudio Blog earlier this month. This means you can launch RStudio Server Pro on an virtual machine with the memory, disk, and CPU configuration of your choice, and pay by the minute for the VM instance plus a the RStudio software charge. Then, you can use a browser to access the remote RStudio Server (the interface is nigh-indistinguishable from the desktop version), with access to the commercial features of RStudio including support for multiple R version and concurrent ... Read More

Feed: Planet MySQL; Author: João Gramacho; Starting in version 8.0.14, MySQL server can encrypt all new binary and relay log files on disk. In order to do so, you just need to enable the new binlog_encryption option (and also ensure that you have a keyring). Once enabling the option in a client session, the server will rotate both binary and relay logs to start using a new encrypted binary log file format. Only the data at rest is encrypted. The replication stream sent to replicas (and to mysqlbinlog client program) wasn’t changed. First of all, you need to have keyring ... Read More

Feed: SAS Blogs. Author: Edoardo Riva. You'll notice several changes in SAS Grid Manager with the release of SAS 9.4M6. For the first time, you can get a grid solution entirely written by SAS, with no dependence on any external or third-party grid provider. This post gives a brief architectural description of the new SAS grid provider, including all major components and their role. The “traditional” SAS Grid Manager for Platform has seen some architectural changes too; they are detailed at the bottom. A new kid in town SAS Grid Manager is a complex offering, composed of different layers of software. The ... Read More

Feed: All - O'Reilly Media. Author: Deepak Kanungo. Triangle (source: Pexels) Check out the live online training course "Probabilistic modeling with TensorFlow Probability" on February 27, 2019. This post originally published on Google's TensorFlow blog; it is republished here with permission. At Hedged Capital, an AI-first financial trading and advisory firm, we use probabilistic models to trade the financial markets. In this blog post, we explore three types of errors inherent in all financial models, with a simple example of a model in TensorFlow Probability (TFP). Finance is not physics Adam Smith, generally recognized as the founder of modern economics, ... Read More

Feed: Planet MySQL; Author: MySQL Server Dev Team; As listed in the release announcement of the latest MySQL InnoDB Cluster release, 8.0.14 brings exciting new features! This blog post is the first of a series detailing every single new feature added, starting by: “Changing cluster topology modes ‘live‘”. Cluster topology modes The AdminAPI provides the means to create an InnoDB cluster to run on single-primary mode or multi-primary mode. By default, a cluster setup runs in single-primary mode, i.e. the cluster has a single-primary server that accepts read and write queries (R/W), meanwhile all the remaining members accept only read ... Read More

Feed: R-bloggers. Author: Gavin L. Simpson. Recently I’ve been preparing my gratia package for submission to CRAN. During my pre-flight testing I noticed an issue under Windows checking the examples in the package against the reference output I generated on linux. In the latest release of the tibble package, the way tibbles are printed has changed subtly and in a way that leads to cross-platform differences. As I write this, tibbles with more than a set number of rows are printed in a truncated form, showing only the first 10 rows of data. In such cases, a final line is ... Read More

Feed: R-bloggers. Author: dan. WIND SPEEDS UP HEAT LOSS Twenty years ago, a German colleague asked me what the deal was with wind chill. I guess they didn’t have it in Germany. I explained it was an attempt to communicate how it feels when there is a low temperature combined with wind.  But my colleague wanted to know how they get the values in charts like these: If you look closely at the first chart, it gives the formula for wind chill. It looks pretty hairy but it’s just a function of two things: wind speed and temperature. The windchill ... Read More

Feed: R-bloggers. Author: hfrick. Last week RStudio hosted their conference, rstudio::conf, in Austin and a whole lot of members of the R community came to see what’s new, where the community and the field might be heading and to enjoy tacos. R in production A major theme from this conference was R in production. Joe Cheng kicked this one off in his keynote about Shiny in production, presenting how the answer to “Can Shiny be used for production?” changed from “Yes, it’s quite possible” (in 2015) to “Yes, it’s quite easy” (in 2019). Of course, it isn’t all easy yet. There are still cultural challenges ... Read More