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Feed: Featured Blog Posts - Data Science Central. Author: Vincent Granville. Monday newsletter published by Data Science Central. Previous editions can be found here. The contribution flagged with a + is our selection for the picture of the week. To subscribe, follow this link.   Announcement Data Scientist + Data Scientist = Free mock interview on Pramp. Increase your chances of success with extra practice. Pramp is the world’s largest peer-to-peer mock interviewing platform. Now you can practice not only DS&A, system design, and behavioral interviews but also data science interviews. Get ready for your next interview!. Featured Resources and Technical Contributions  Featured Articles ... Read More

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: Planet MySQL; Author: MySQL Server Dev Team; The newest release of MySQL 8.0.14 includes the ability to control the number and location of UNDO tablespaces using SQL. Users can now manage UNDO tablespaces using SQL from the MySQL client. Background More undo tablespaces help busy systems handle a larger number of read-write concurrent transactions by having more rollback segments available to provide undo logs to those transactions.  Users can now create up to  127 UNDO tablespaces and the minimum number of UNDO tablespaces required for MySQL 8.0 is 2. UNDO logs are no longer stored in the InnoDB system ... Read More

Feed: Featured Blog Posts - Data Science Central. Author: Vincent Granville. Bill Schmarzo, also known as the “Dean of Big Data” is CTO at Hitachi Vantara, and former CTO at Dell EMC. He authored a series of articles on analytic applications, and is on the faculty of TDWI teaching a course on "Thinking Like A Data Scientist". Bill is the author of “Big Data: Understanding How Data Powers Big Business” and "Big Data MBA: Driving Business Strategies with Data Science." Bill is also an Executive Fellow at the University of San Francisco School of Management, and Honorary Professor at NUI Galway at NUI ... Read More

Feed: All - O'Reilly Media. Author: Nikki McDonald, John Devins. Connections (source: Geralt via Pixabay) If your job or business relies on systems engineering and operations, be sure to keep an eye on the following trends in the months ahead. AIOps Artificial intelligence for IT operations (AIOps) will allow for improved software delivery pipelines in 2019. This practice incorporates machine learning in order to make sense of data and keep engineers informed about both patterns and problems so they can address them swiftly. Rather than replace current approaches, however, the goal of AIOps is to enhance these processes by consolidating, ... 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: The Information Lab. Author: Jonathan MacDonald. 22 January, 2019 | Jonathan MacDonald How to use TabCMD & the Tableau Server REST API when using SAML authentication This is just a quick blog post from me on a common question that I tend to come across fairly often. When you have configured SAML authentication on your Tableau Server, you essentially hand off the authentication part of a user login to a third-party system, typically referred to as an identity provider, or IdP. This third-party IdP authenticates the user, and passes them back to Tableau Server to log them into the ... Read More

Feed: Neo4j Graph Database Platform. Author: Jocelyn Hoppa. Graph algorithms provide the means to understand, model and predict complicated dynamics such as the flow of resources or information, the pathways through which contagions or network failures spread, and the influences on and resiliency of groups.This blog series is designed to help you better utilize graph analytics and graph algorithms so you can effectively innovate and develop intelligent solutions faster using a graph database.Last week we finished our look at pathfinding and graph search algorithms, with a focus on Minimum Weight Spanning Tree. This week we begin our exploration of Centrality ... 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