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Data Science Blog

Machine learning & data science for beginners and experts alike.
Announcement | We’re thrilled to announce our newest Alteryx Designer Expert Certified users! Learn more.
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Alteryx
Alteryx

vacancy.jpg

Let's see if we can cut down our energy consumption - FROM 97.7 QUADRILLION BTU!

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Alteryx
Alteryx

BRAINS.PNG

Neural Networks are an approach to artificial intelligence that was first proposed in 1944.  Modeled loosely on the human brain, Neural Networks consist of a multitude of simple processing nodes (called neurons) that are highly interconnected and send data through these network connections to estimate a target variable. In this article, I will discuss the structure and training of simple neural networks (specifically Multilayer Perceptrons, aka "vanilla neural networks"), as well as demonstrate an example neural network created by the Alteryx Neural Network Tool.

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Alteryx
Alteryx

cheat sheet.PNG 

Who doesn’t love a good cheat sheet? Nobody, that’s who. Cheat sheets are awesome. They are a great reference for functions you need handy, but don’t have memorized by heart (yet). They can also be a fantastic way for learning and reinforcing components of a programming language. Some people like to keep them saved as a bookmark on their web browser. With all of that in mind, we are proud to present to you an Alteryx – R Cheat Sheet, which features Alteryx specific functions for use in the R Tool. With this cheat sheet, you should be better equipped to take on any R Tool challenges you encounter.

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Alteryx
Alteryx

titanic-c.png

Part 3 of 3: The final portion of predicting which Titanic passengers would survive.

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Alteryx
Alteryx

titanic-b.png

Part 2 of 3: The imputation portion of predicting which Titanic passengers would survive.

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Alteryx
Alteryx

titanic-a.png

Part 1 of 3: The feature engineering portion of predicting which Titanic passengers would survive.

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Alteryx
Alteryx

football.png

TLDR: the curse is real.

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Alteryx
Alteryx

Where we dive deep into the simulation techniques used, and see how we did.

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Alteryx
Alteryx

football.png

Just in time before the first game begins, Alteryx predicts which Teams Will Advance out of the Group Round.

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Alteryx
Alteryx

banner1.pngVoronoi Tesselation and Delaunay Trianglulation both perform spatial calculations on a set of irregular points. Voronoi Cells (sometimes referred to as Thiessen Polygons in the GIS world) make up a Voronoi Tesselation, which is the partitioning of a plane into polygons based on a set of points, so that for each point there is a corresponding polygon where the area in the polygon is closer to the corresponding point than any other point. Delaunay Triangulation is when a set of irregular points are divided into triangles, so that no point in the set is inside the circumcircle of any triangle created from the points.

 

Both of these processes have a bunch of really neat spatial analysis applications. In this article, we will talk about their implementation in Alteryx.

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gshotwell
Matter

 

r-excel-graph.pngWhy learning new things is hard, plus four fundamental differences between Excel and R

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Alteryx
Alteryx

 

r-to-python.jpgMoving from R to Python? Make sure you know about these packages.

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pm8k
Dark Matter

 

r_and_python.pngDiving into the RPy2 packages and using both R and Python in the same workspace.

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Alteryx
Alteryx

Have you ever tried to explore those mysterious tools with an R in the lower right-hand corner and been too confused to continue? Or have you not even installed the Predictive, Time Series, and Predictive Grouping tools? Well, here’s your chance to clear through your fog of confusion and utilize these powerful tools.

 

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Sr. Community Content Manager
Sr. Community Content Manager

We recently released a Microsoft Kit that included a text analytics tool. I wanted to compare the Microsoft sentiment analysis capability to a couple open source algorithms available. Here's how they stack up.

AzureMLicon.pngvs.pngSentimentAnalysis.png

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Alteryx
Alteryx

Does this sound familiar? You just watched a fantastic demonstration for advanced users on regression modeling. You think (who wouldn’t?!) “These tools look amazing…imagine what I can do!” So you jump into Alteryx and start plugging in your data! “BUT WAIT! What are all these error messages?!” Don't give up! Read this instead!

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Alteryx
Alteryx

Want a way to interactively explore the relationships between products based on their attributes? Trying to understand the results of a market basket analysis? Alteryx provides the solution by combining predictive tools with the Network Analysis Tool.

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Sr. Community Content Manager
Sr. Community Content Manager

You’ve blended your data. Cleansed it. Trained your model. Made more models. Tweaked them. Compared them. You’ve picked THE BEST model. It’s perfect. Now what? You need to get the rest of your organization using your model in a live production environment.

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Alteryx
Alteryx

 

british-aa-spotter.jpgROC curves are a great tool for binary classification. Learn more in this post!

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Alteryx
Alteryx

 

6-plot-iris.pngIntroduction to plotting and graphics in R (without ggplot2)

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Alteryx
Alteryx

Last Friday was a very busy day for several of us at Alteryx in the wake of the announcement that Microsoft and Revolution Analytics had agreed to have Microsoft acquire Revolution Analytics. In this post I won't go into the Alteryx angle of this story, other than to say we think this is a net positive. Instead, I wanted to provide a few words of appreciation for what Revolution Analytics has done for both R based technology and for their non-technology contributions to the R community since its creation (as REvolution Computing) in 2007.

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Alteryx
Alteryx

 

out-of-ram.pngRunning code in parallel is tricky. This post shows how to quickly (and easily) parallelize your R code.

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Alteryx
Alteryx

 

bloated-gopher.jpgR can be a bit bloated someitmes. Learn how to make your R models more effecient.

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Alteryx
Alteryx


In this blog post, I share an example module that demonstrates how to use a new Decision Tree macro, developed by Dr. Dan Putler.

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