Feed: R-bloggers. Author: George Pipis. [This article was first published on R – Predictive Hacks, 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. Few words about Thompson Sampling Thompson Sampling is an algorithm for decision problems where actions are taken in sequence balancing between exploitation which maximizes immediate performance and exploration which accumulates new information that may improve future performance. There is always a trade-off between exploration and exploitation in all Multi-armed bandit ... Read More

Feed: O'Reilly Media, Inc. Upcoming Titles. Author: O'Reilly Media, Inc.. by Matthew MacDonald Released September 2020 Publisher(s): O'Reilly Media, Inc. ISBN: 9781492074168 Explore a preview version of WordPress: The Missing Manual, 3rd Edition right now. O’Reilly members get unlimited access to live online training experiences, plus books, videos, and digital content from 200+ publishers ... Read More

Feed: Planet PostgreSQL. This diary-of-an-engineer post from our Citus open source engineering team was originally published on the Azure Postgres Blog. When working on the internals of Citus, an open source extension to Postgres that transforms Postgres into a distributed database, we often get to talk with customers that have interesting challenges you won’t find everywhere. Just a few months back, I encountered an analytics workload that was a really good fit for Citus. But we had one problem: the percentile calculations on their data (over 300 TB of data) could not meet their SLA of 30 seconds. To make ... Read More

Feed: R-bloggers. Author: R | Quantum Jitter. [This article was first published on R | Quantum Jitter, 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.Reading news articles on the will-they-won’t-they post-Brexit trade negotiations with the EU sees days of optimism jarred by days of gloom. Do negative news articles, when one wants a positive outcome, leave a deeper impression?I wondered if I could get a more objective view from quantitative analysis of textual data ... Read More

Feed: R-bloggers. Author: R on OSM. [This article was first published on R on OSM, 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.In our last post, we ran simulations on our 1,000 randomly generated return scenarios to compare the average and risk-adjusted return for satisfactory, naive, and mean-variance optimized (MVO) maximum return and maximum Sharpe ratio portfolios. We found that you can shoot for high returns or high risk-adjusted returns, but rarely both. Assuming ... Read More

Feed: R-bloggers. Author: » R. [This article was first published on R, 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.I first got to grips with the R coding language to do the statistical analysis for my dissertation, but I still did all my actual writing in more traditional word processing apps. This became a pain any time I needed to copy-paste an update into a table or, even worse, change a plot and re-export ... Read More

Feed: Recent Announcements. CodeCommit is a fully-managed source control service that makes it easy for companies to host secure and highly scalable private Git repositories. CodeCommit eliminates the need to operate your own source control system or worry about scaling its infrastructure. You can use CodeCommit to securely store anything from source code to binaries, and it works seamlessly with your existing Git tools.   ... Read More

Feed: Recent Announcements. Amazon Elasticsearch Service Audit Logs allows customers to log all of their user activity on their Elasticsearch clusters, including keeping a history of user authentication success and failures, logging all requests to Elasticsearch, modifications to indices, recording incoming search queries and much more. Audit Logs provides a default configuration that covers a popular set of user actions to be tracked. Administrators can further configure and fine tune the settings to meet their needs. Audit Logs is integrated with Fine Grained Access Control, allowing you the ability to log access or modification requests to sensitive documents or fields, ... Read More

Feed: Recent Announcements. For example, marketing FAQs can be uploaded with a “marketing” tag to ensure Kendra targets marketing related FAQs, and excludes unrelated content to generate more accurate answers. To use custom tags at time of search, customers can leverage Amazon Kendra’s existing filtering capabilities, which will now apply to both documents and FAQs ... Read More

Feed: Recent Announcements. Amazon EKS is a managed Kubernetes service that makes it easy for you to run Kubernetes on AWS without needing to install, operate, and maintain your own Kubernetes control plane or worker nodes. Amazon EKS is certified Kubernetes conformant, so existing applications running on upstream Kubernetes are compatible with Amazon EKS. You can also easily migrate any standard Kubernetes application to EKS without needing to refactor your code.  ... Read More