Tag: Table

Feed: Recent Announcements. You can now use Amazon Elasticsearch Service as a target data store with AWS Glue Elastic Views. Now in limited preview, AWS Glue Elastic Views is a new capability of AWS Glue that makes it easy to combine and replicate data across multiple data stores without you having to write custom code. With AWS Glue Elastic Views, you can use familiar Structured Query Language (SQL) to quickly create a virtual table—called a view—from multiple different source data stores. Based on this view, AWS Glue Elastic Views copies data from each source data store and creates a replica—called ... Read More

Feed: Featured Blog Posts - Data Science Central. Author: Howard M Wiener. A recent Wall Street Journal article, entitled Coronavirus Pandemic Helps Speed More CIOs Toward Business Operations Accountability, observed: “Large businesses are starting to hold their chief information officers accountable for the results of corporate-wide digital business operations, giving them much wider responsibility within the organization. . . Gartner, which last month released its annual list of top strategic predictions, said that by 2024, a quarter of the CIOs working in large, traditional enterprises will effectively become, as the research and advisory firm calls it, ‘COO by proxy.’” The ... Read More

Feed: R-bloggers. Author: R, Econometrics, High Performance. There are several ways to forecast tax revenue. The IMF Financial Programming Manual reviews 3 of them: (i) the effective tax rate approach; (ii) the elasticity approach; and (iii) the regression approach. Approach (iii) typically results in the most accurate short-term forecasts. The simple regression approach regresses tax revenue on its own lags and GDP with some lags. In the absence of large abrupt shifts in the tax base, domestic revenue can be assumed to have a linear relationship with GDP. Since however both revenue and GDP are typically non-stationary series, this relationship ... 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. The Riddler has a variant on the classical (discrete) random walk around a circle where every state (but the starting point) has the same probability 1/(n-1) to be visited last. Surprising result that stems almost immediately from the property that, leaving from 0, state a is visited couterclockwise before state b>a ... Read More

Feed: R-bloggers. Author: Learning Machines. We already covered Neural Networks and Logistic Regression in this blog. If you want to gain an even deeper understanding of the fascinating connection between those two popular machine learning techniques read on! Let us recap what an artificial neuron looks like: Mathematically it is some kind of non-linear activation function of the scalar product of the input vector and the weight vector. One of the inputs the so-called bias (neuron), is fixed at 1. The activation function can e.g. be (and often is) the logistic function (which is an example of a sigmoid function): ... Read More

Feed: R-bloggers. Author: rOpenSci - open tools for open science. With this blog post, I show how to use the mcbette R package in an informal way. A more formal introduction on mcbette can be found in the Journal of Open Source Science . After introducing a concrete problem, I will show how mcbette can be used to solve it. After discussing mcbette, I will conclude with why I think rOpenSci is important and how enjoyable my experiences have been so far. The problem Imagine you are a field biologist. All around the world, you captured multiple bird species of ... Read More

Feed: R-bloggers. Author: Scott Stoltzman. Winners and LosersIn a similar manner to the last post, it took 3 more episodes for me to be able to muster up the courage to write a blog post. The drama level has, as usual, hit an all time high. However, we are going to take a look at what it means to be a contestant in terms of Instagram followers once you leave the show.Here’s a chart showing the followers of all contestants (scaled for comparison purposes) and you’ll notice the pink line changes to gray when the person gets the big ugly ... Read More

Feed: AWS Big Data Blog. Data is ubiquitous in businesses today, and the volume and speed of incoming data are constantly increasing. To derive insights from data, it’s essential to deliver it to a data lake or a data store and analyze it. Real-time or near-real-time data delivery can be cost prohibitive, therefore an efficient architecture is key for processing, and becomes more essential with growing data volume and velocity. In this post, we show you how to build a scalable producer and consumer application for Amazon Kinesis Data Streams running on AWS Fargate. Kinesis Data Streams is a fully ... Read More

Feed: AWS Partner Network (APN) Blog. Author: Jobin George. By Jobin George, Sr. Partner Solutions Architect at AWSBy Deepak Ram, Director, Strategic Solutions at InformaticaBy Louis-Noël Trapadoux, Principal Product Manager at Informatica Systems are growing more complex, cloud applications are growing in adoption, and cloud data lakes are being increasingly deployed. At the same time, organizations need to implement data cataloging solutions to provide data governance, data analytics, or pure metadata management. These cataloging solutions should be able to quickly start providing insights so they can drive adoption. This adoption would, in turn, provide additional insight into the data assets ... Read More

Feed: AWS Big Data Blog. When deploying data lakes on AWS, you can use multiple AWS accounts to better separate different projects or lines of business. In this post, we see how the AWS Lake Formation cross-account capabilities simplify securing and managing distributed data lakes across multiple accounts through a centralized approach, providing fine-grained access control to the AWS Glue Data Catalog and Amazon Simple Storage Service (Amazon S3) locations. Use case Keeping each business unit’s resources as compute and storage in its own AWS account allows for easier cost allocation and permissions governance. In the other hand, centralizing your ... Read More