Tag: row

Feed: All - O'Reilly Media. Author: Manu Jeevan, Suresh Chelladurai. Road signs (source: Pixabay) The full Jupyter Notebook for this post can be accessed here. Although there are many deep learning frameworks, including TensorFlow, Keras, Torch, and Caffe, Apache MXNet in particular is gaining popularity due to its scalability across multiple GPUs. In this blog post, we'll tackle a computer vision problem: classifying German traffic signs using a convolutional neural network. The network takes a color photo containing a traffic sign image as input, and tries to identify the type of sign. The full notebook can be found here In ... Read More

Feed: Percona Database Performance Blog. Author: Dehowe Feng. Dehowe Feng  | August 17, 2017 |  Posted In: Graph Database, JSON, open source databases, Percona Live PREVIOUS POST In this first of its kind, Percona welcomes Dehowe Feng, Software Developer from Bitnine as a guest blogger. In his blog post, Dehowe discusses how viewing imported data from IMDb into a graph database (AgensGraph) lets you quickly see how data nodes relate to each other. This blog echoes a talk given by Bitnine at the Percona Live Open Source Database Conference 2017. Graphs help illustrate the relationships between entities through nodes, drawing connections between ... Read More

Feed: Planet MySQL; Author: Keith Hollman; I’ve had some questions from people using MySQL Cluster GPL and wanting to move to using MySQL Cluster Carrier Grade Edition, i.e., they want to use MySQL Cluster Manager, MCM, to make their lives much easier, in particular, upgrading (as well as config change ease and backup history). All I want to do here is to share with you my personal experience on migrating what’s considered a ‘wild’ NDB Cluster to a MCM managed cluster. It’s just as simple to follow the manual chapter Importing a Cluster into MySQL Cluster Manager so at least ... Read More

Feed: Planet MySQL; Author: InsideMySQL.com; Dear MySQL users, MySQL Connector/Python 2.1.7 GA is a fifth GA version of 2.1 release series of the pure Python database driver for MySQL. It can be used for production environments. MySQL Connector/Python version 2.1.7 GA is compatible with MySQL Server versions 5.5 and greater. Python 2.6 and greater as well as Python 3.4 and greater are supported. Python 2.4, 2.5, and 3.1, 3.2, 3.3 are not supported. MySQL Connector/Python 2.1.7 is available for download from: http://dev.mysql.com/downloads/connector/python/#downloads MySQL Connector/Python 2.1.7 (Commercial) will be available for download on the My Oracle Support (MOS) website. This release ... Read More

Feed: Featured Blog Posts - Data Science Central. Author: Jesus Ramos. Data Denialism A common scenario that data analysts in general encounter is what I like to describe as "data denialism". Often, and especially while consulting, an analyst will find that the data tells a different story than what the customer holds to be true. It is also often the case that, when presenting this finding, the customer will outright deny the evidence, asserting that either the data or the analysis must be wrong. For example, it may be that a retailer focused on the low-end market is getting most ... Read More

Feed: R-bloggers. Author: Thinking inside the box. The bi-monthly RcppArmadillo release is out with a new version 0.7.960.1.0 which is now on CRAN, and will get to Debian in due course. And it is a big one. Lots of nice upstream changes from Armadillo, and lots of work on our end as the Google Summer of Code project by Binxiang Ni, plus a few smaller enhancements — see below for details. Armadillo is a powerful and expressive C++ template library for linear algebra aiming towards a good balance between speed and ease of use with a syntax deliberately close to ... Read More

Feed: R-bloggers. Author: Higher Order Functions. In this post, I describe a recent case where I used rlang’stidy evaluationsystem to do some data-cleaning. This example is not particularly involved, butit demonstrates is a basic but powerful idea: That we can capture theexpressions that a user writes, pass them around as data, and make some:dizzy: magic :sparkles: happen. This technique in R is callednonstandard evaluation. Strange eyetracking data Last week, I had to deal with a file with some eyetracking data from asequence-learning experiment. The eyetracker records the participant’s gazelocation at a rate of 60 frames per second—except for this weird ... Read More

Feed: Planet MySQL; Author: Jean-François Gagné; TL;DR: unless you know what you are doing, you should always have a primary key on your tables when replicating in RBR (and maybe even all the time). TL;DR2: MariaDB 10.1 has an interesting way to protect against missing a primary key (innodb_force_primary_key) but it could be improved.A few weeks ago, I was called off hours because replication delay on all the slaves from a replication chain was high and growing.  It was not the first time this happened on that chain, so I thought right away that this was probably an UPDATE or DELETE of many ... Read More

Feed: Planet big data. Author: Meg Blanchette. August 15th, 2017 An important architectural component of any data platform is those pieces that manage data ingestion. In many of today’s “big data” environments, the data involved is at such scale in terms of throughput (think of the Twitter “firehose”) or volume (e.g., the 1000 Genomes project) that approaches and tools must be carefully considered. In the last few years, Apache Kafka and Apache Spark have become popular tools in a data architect’s tool chest, as they are equipped to handle a wide variety of data ingestion scenarios and have been used ... Read More

Feed: IDERA Community Blog; Author: Beth Chauvin; Use IDERA Uptime Cloud Monitor (UCM) to monitor your PostgreSQL database for availability and performance. Uptime Cloud Monitor from IDERA offers a SAAS based out-of-the-box solution for monitoring PostgreSQL for performance and availability. If you are not familiar with the concept of custom metrics as used in Uptime Cloud Monitor, please go through Custom Metrics information once before continuing with this document.  Uptime Cloud Monitor account. If you don’t already have an account, you can sign up for a 14 day FREE TRIAL of Uptime Cloud Monitor here (no Credit Card required). PostgreSQL ... Read More