Data Science Austria

Bayesian Modeling for Ford GoBike Ridership with PyMC3 — Part I

Photo by Andrew Gook on Unsplash Bike shares are a large part of the transport equation for cities around the world. In San Francisco, one of the major players in the bike share game is Ford with its GoBike program. Conveniently, they kindly release their data for people like me to … Read moreBayesian Modeling for Ford GoBike Ridership with PyMC3 — Part I

Identifying rooftops on low-resolution images with Masked R-CNN model

The work is done by Smriti Bahuguna and Rasika Joshi. In my previous post, I wrote how we are using the U-Net model to identify rooftops in low-resolution satellite images. I also wrote how are we using a community of ML enthusiast to build the solution. In this article, I … Read moreIdentifying rooftops on low-resolution images with Masked R-CNN model

Hashes power Probabilistic Data Structures

Photo by Ryan Thomas Ang on Unsplash Hash functions are used all over computer science but I want to mention they usefulness within probabilistic data structures and algorithms. We all know that data structures are the building blocks of most algorithms. A bad choice could lead to hard and inefficient solutions … Read moreHashes power Probabilistic Data Structures

First neural network for beginners explained (with code)

Creating our own simple neural network Let’s create a neural network from scratch with Python (3.x in the example below). import numpy, random, osa = 1 #learning ratebias = 1 #value of biasweights = [random.random(),random.random(),random.random()] #weights generated in a list (3 weights in total for 2 neurons and the bias) The … Read moreFirst neural network for beginners explained (with code)

Setting Up AWS EC2 Instance for Beginners

Access Your EC2 Instance via SSH EC2 instance, check; .pem key, check. Before proceeding, you need to locate your public DNS highlighted in green. Click on your newly created instance and a description box should appear like the own below. You use the ssh (secure shell) command to access your instance. … Read moreSetting Up AWS EC2 Instance for Beginners

Effect of Cambridge Analytica’s Facebook ads on the 2016 US Presidential Election

Cambridge Analytica an advertising company, and an offshoot of the SCL group was founded in 2013 but has gone defunct as of May 1st, 2018. The company had a political and a commercial wing, and from their website, the political wing “combines the predictive data analytics, behavioral sciences, and innovative … Read moreEffect of Cambridge Analytica’s Facebook ads on the 2016 US Presidential Election

Web Development of NLP Model in Python & Deployed in Flask

Source Google Introduction on NLP spam Architecture Considering a system using machine learning to detect spam SMS text messages. Our ML systems workflow is like this: Train offline -> Make model available as a service -> Predict online. A classifier is trained offline with spam and non-spam messages. The trained … Read moreWeb Development of NLP Model in Python & Deployed in Flask