Operational document stores require backups for disaster recovery and data migration. Elasticsearch uses the term snapshot for their backups. Amazon Web Services (AWS) provides a fully managed Elasticsearch service that includes both automatic...

Elastic Architects designed the distributed Elasticsearch platform to follow NoSql principles. In the traditional Relational Database Management System (RDBMS) world, SQL databases use GROUP BY syntax to group rows with similar values into...

In this HOWTO, I will describe the process to connect an Ubuntu EC2 instance to the Amazon Web Services (AWS) provided Elasticsearch Service via the boto3 Python library. This blog updates my incredibly popular original post on this topic which...

FastAI provides Jupyter notebooks to wrangle data, train models, optimize models and then serve models. I recommended FastAI to my Data Scientist friends and they found the FastAI Jupyter layout and workflow both cumbersome and confusing. GCP...

This blog post describes how to configure Flask to emit form data to your own personal Gmail account. You don't need to use Gmail, in fact, you can configure Flask to send data to any email account you have access to. This architecture uses...

InfluxDB provides an exciting Time Series database with tons of industry momentum and enthusiasm behind it. InfluxData, the parent company that distributes the product overhauled the classic InfluxDB service with their new InfluxDB 2.0 offering....

Fastai provides helper functions on top of Pytorch to help us wrangle, clean, and process data. In this HOWTO we will accomplish the following: Deploy an AWS g3.8xlarge instance Compile and install NVIDIA drivers on our g3.8xlarge instance Use a...

In this blog post you will deploy your own personal Kraken terminal using the InfluxDB Cloud 2.0 platform. With this terminal you can quickly filter data, plot data and apply math. The first section provides a Hello World project to get up and...

Flask, Lambda, API Gateway, IAM and S3 enable massively scalable web database applications. Flask provides a simple, Pythonic Model View Controller (MVC) framework to develop the application logic. Lambda and API Gateway provide pay-per-use...

I deployed my first web database application back in 2002 thanks to the seminal O'Reilly book Web Database Applications with PHP and Mysql by David Lane and Hugh E. Williams. In the past sixteen years, the industry developed tons of frameworks...

OpenDaylight allows cloud engineers to programmatically deploy, configure and control virtual network services. As written on the OpenDaylight website, ODL helps Internet Service Providers, Academics and Cloud Service Providers to enable the...

In this HOWTO, I will demonstrate a very quick and dirty method to transcribe customer service voicemails to text and emit the text to an Elasticsearch NoSQL document store. Once in Elasticsearch, you can search the voicemails for Keywords and...

Introduction Machine Learning engineers use Probabilistic Neural Networks (PNN) for classification and pattern recognition tasks. PNN use a Parzen Window along with a non-negative kernel function to estimate the probability distribution function...

This blog post summarizes the first three chapters of Bernard Sklar's Digital Communication - Fundamentals and Applications textbook. Signals A Digital Communication System (DCS) transmitter (XMT) sends a waveform selected from a finite set of...

Introduction I investigate the effectiveness of a Reduced Coulomb Energy (RCE) Neural Network on the classification of the University of California, Irvine (UCI) Bupa liver disorder data set. I investigate seven (7) different versions of the data...

Introduction OpenDaylight provides a Software Defined Network (SDN) controller that allows network engineers to programmatically direct network services via a Representational state transfer (REST) Application Programming Interface (API). When I...

Part Two of this HOWTO demonstrates how to secure your S3 hosted website with HTTPS. If you haven't completed part one yet, be sure to click here. Once you complete this HOWTO, you will have a secure website, that Google approves, as seen in the...

This HOWTO demonstrates how to secure your Simple Storage Service (S3) hosted website via Hypertext Transfer Protocol Secure (HTTPS). While the S3 Representational State Transfer (REST) enpoint supports native HTTPS, an S3 bucket configured to...

In this HOWTO, I will demonstrate how to easily integrate the Google reCAPTCHA service into a Flask web application using Flask-WTF. The following cartoon depicts the end result. A Flask application server provides a simple (beautified) survey to...

In this HOWTO, we expand upon the simple Elasticsearch proxy we deployed in our first Lambda tutorial. In that tutorial, we showed you how to create a proxy in front of the AWS Elasticsearch service using a Lambda function and an API Gateway. We...

Introduction Last month, I followed the example of Full Stack Python and migrated this blog from Wordpress to Amazon Web Services (AWS) Simple Storage Service (S3). The S3 hosting approach gives me the following features: Global caching via...

From the land of Nintendo and Samurai comes Monacoin, a Japanese cryptographic currency based on Litecoin. If you look at www.coinmarketcap.com you will see that Monacoin increased about 30x in the past three months. I found it a bit challenging...

Caution! Math Ahead! For the Math-phobic, I explain how I crunch the test results in a math-free, simple and focused blog post here. I use math here, so this may be your last chance to escape! Still with me? Excellent! The bullets below outline...

Do you have big data chops? Quick, what do these three things have in common? Yankees, Giants, Rangers, Knicks What about these? Beatles, Monkees, Beach Boys Do you have an answer for each? "New York," for example, for the first list and "Rock...

All production databases require backups. The AWS Elasticsearch documentation states: Amazon Elasticsearch Service (Amazon ES) takes daily automated snapshots of the primary index shards in an Amazon ES domain... However, you must contact the AWS...