Feed: R-bloggers. Author: Bluecology blog. [This article was first published on Bluecology blog, 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. One powerful use of GAMs is for interpolating to unsampled locations. Wecan combine GAMs with raster package to conveniently predict a GAM modelto places we have not got data. Simulate some spatial data We’ll simulate some spatial data based on rasters. There are two spatialcovariates, x1 and x2. We use these to ... Read More

Feed: R-bloggers. Author: R on Chemometrics & Spectroscopy using R. I’m pleased to announce that ChemoSpec2D, a package for exploratory data analysis of 2D NMR spectra, has been updated on CRAN and is coming to a mirror near you. Barring user reports to the contrary, I feel like the package has pretty much stabilized and is pretty robust. The main area for future expansion is to add additional data import routines. Please feel free to ask about your specific use case! The most noteworthy user-facing improvements are: Function import2DSpectra can now handle JCAMP-DX files, Bruker files exported via the TopSpin ... Read More

Feed: R-bloggers. Author: R Views. [This article was first published on R Views, 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. Last week, Lancet published the paper Improving the prognosis of health care in the USA by Alison P Galvani, Alyssa S Parpia, Eric M Foster, Burton H Singer, Meagan C Fitzpatrick of CIDMA, the Center for Infectious Disease Modeling and Analysis, Yale School of Public Health. The paper, which, provides a detailed ... Read More

Feed: R-bloggers. Author: xi'an. [This article was first published on R – Xi'an's Og, 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. Two weeks ago, Kurcharski et al., from the at the London School of Hygiene and Tropical Medicine, published on medrXiv a statistical analysis via a stochastic SEIR model of the evolution of the 2019-2020 nCoV epidemics, with prediction of a peak outbreak by late February in Wuhan and a past outbreak ... Read More

Feed: R-bloggers. Author: arthur charpentier. A few months ago, I posted a note with some home made codes for quantile regression… there was something odd on the output, but it was because there was a (small) mathematical problem in my equation. So since I should teach those tomorrow, let me fix them. Median Consider a sample {y_1,cdots,y_n}. To compute the median, solvemin_mu leftlbracesum_{i=1}^n|y_i-mu|rightrbracewhich can be solved using linear programming techniques. More precisely, this problem is equivalent tomin_{mu,mathbf{a},mathbf{b}}leftlbracesum_{i=1}^na_i+b_irightrbracewith a_i,b_igeq 0 and y_i-mu=a_i-b_i, forall i=1,cdots,n. Heuristically, the idea is to write y_i=mu+varepsilon_i, and then define a_i‘s and b_i‘s so that varepsilon_i=a_i-b_i and ... Read More

Feed: Redis Labs. Author: Kyle Davis. Lua scripting is a hugely powerful feature of Redis. At the same time, though, Lua scripting can be tricky to “get right.”  There are many ways to run a script that works most of the time, which can also be articulated as a script that fails some of the time. Let’s take a look at a Lua scripting corner case in Python with RedisPy where your script can fail despite doing what looks correct. Of course, at the end, we’ll show you the bullet-proof way to do it when you need everything to always ... Read More

Feed: The Internet of Things on AWS – Official Blog. Author: Manish Talreja. Many embedded architectures include a connectivity processor connected to one or more secondary processors that perform business logic. The ability to perform secondary processor over-the-air (OTA) updates is just as critical as updating the connectivity processor. This is because it allows for low-cost patching of bugs and security vulnerabilities as well as delivering new features to the device. FreeRTOS is an open source, real-time operating system for microcontrollers that makes small, low-power edge devices easy to program, deploy, secure, connect, and manage. AWS IoT Device Management makes it ... Read More

Feed: Planet MySQL; Author: MySQL Performance Blog; In the last blog post of this series, we discussed in detail how Master Key encryption works. In this post, based on what we already know about Master Key encryption, we look into how Master Key rotation works.The idea behind Master Key rotation is that we want to generate a new Master Key and use this new Master Key to re-encrypt the tablespace key (stored in tablespace’s header).Let’s remind ourselves what a Master Key encryption header looks like (it is located in tablespace’s header):From the previous blog post, we know that when a ... Read More

Feed: All Oracle Press Releases. A wide array of individuals and organizations from across technology, arts and culture, government, advocacy, and academia filed amicus briefs this week supporting Oracle in the Supreme Court. This diverse group is speaking out to defend copyright protection and to reject Google’s attempts to excuse its theft of more than 11,000 lines of Oracle’s original code. Commenting on the briefs, Oracle General Counsel Dorian Daley said: “Google is attempting to rewrite the fundamental copyright protections that fuel innovation in this country. The amicus briefs make clear that to avoid significant consequences well beyond the software ... Read More

Feed: R-bloggers. Author: Achim Zeileis. [This article was first published on Achim Zeileis, 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 flexible framework for probabilistic forecasting of circular data is introduced, using distributional regression trees and random forests based on the von Mises distribution. Citation Lang MN, Schlosser L, Hothorn T, Mayr GJ, Stauffer R, Zeileis A (2020). “Circular Regression Trees and Forests with an Application to Probabilistic Wind Direction Forecasting”, arXiv:2001.00412, ... Read More