Data Science

Showing 19-27 of 29 results
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Data Mining for Predictive Social Network Analysis

by Elder Santos

Analysts have come to recognize social network data as a virtual treasure trove of information for sensing public opinion trends and groundswells of support. In this article, Toptal Engineer Elder Santos describes the techniques he employed for a proof-of-concept that effectively analyzed Twitter Trend Topics to predict, as a sample test case, regional voting patterns in the 2014 Brazilian presidential election.

7 minute readContinue Reading
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Azure Tutorial: Predicting Gas Prices Using Azure Machine Learning Studio

by Ivan Matec

Machine learning has changed the way we deal with data. Data driven problems, that are difficult to solve using standard methods, can often be tackled with much more ease using machine learning algorithms. In this article, we will explore Azure Machine Learning features and capabilities through solving one of the problems that we face in our everyday lives.

5 minute readContinue Reading
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Business Intelligence Platform: Tutorial Using MongoDB Aggregation Pipeline

by Avinash Kaza

In today’s data-driven world, researchers are busy answering interesting questions by churning through huge volumes of data. Some obvious challenges they face are due to the sheer size of the dataset they have to deal with. In this article, we take a peek at a simple business intelligence platform implemented on top of the MongoDB Aggregation Pipeline.

7 minute readContinue Reading
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Blockchain Technology Explained: Powering Bitcoin

by Nermin Hajdarbegovic

Bitcoin blockchain is the backbone of the network and provides a tamper-proof data structure, providing a shared public ledger open to all. This article provides insight in blockchain technology, current status and its potential.

6 minute readContinue Reading
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3D Data Visualization with Open Source Tools: A Tutorial Using VTK

by Benjamin Hopfer

How do we understand and interpret the huge amounts of data coming out of simulations? How do we visualize potential gigabytes of datapoints in a large dataset? In this article I will give a quick introduction to VTK and its pipeline architecture, and go on to discuss a real-life visualization example.

12 minute readContinue Reading
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MetaDapper: Data Mapping and Conversion Made Easy With the Right Tools

by Richard Rozsa

Data conversion, translation, and mapping is by no means rocket science, but it is by all means tedious. This article introduces MetaDapper, a .NET library that strives to simplify, streamline, and automate the data conversion process to the greatest extent possible.

10 minute readContinue Reading
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A Guide to UTF-8 Encoding in PHP and MySQL

by Francisco Clariá

Once you step beyond the comfortable confines of English-only character sets, you quickly find yourself entangled in the wonderfully wacky world of UTF-8. Indeed, navigating through UTF-8 related issues can be a frustrating and hair-pulling experience. This post provides a concise cookbook for addressing these issues when working with PHP and MySQL in particular, based on practical experience and lessons learned.

10 minute readContinue Reading
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A Deep Learning Tutorial: From Perceptrons to Deep Networks

by Ivan Vasilev

The recent resurgence in Artificial Intelligence has been powered in no small part by a new trend in machine learning, known as "Deep Learning". In this article, I'll introduce you to the key concepts and algorithms behind Deep Learning, beginning with the simplest building block.

21 minute readContinue Reading
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Forex Algorithmic Trading: A Practical Tale for Engineers

by Rogelio Nicolas Mengual

A few years ago, driven by my curiosity, I took my first steps into the world of Forex by creating a demo account and playing out simulations (with fake money) using the Meta Trader 4 trading platform. After a week of 'trading', I'd almost doubled my 'money'. Spurred on by my own success, I dug deeper and eventually signed up for a number of forums. Soon, I was spending hours reading about trading systems (i.e., rule sets that determine whether you should buy or sell), custom indicators, market moods, and more.

8 minute readContinue Reading

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