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Ask America Anything Results: How the US Feels about Gun Control & Domestic Violence

Ask America Anything Results: How the US Feels about Gun Control & Domestic Violence

by Ola T.

In December, we invited nonprofits to Ask America Anything by giving away two questions on our weekly national representative survey of 2,500 Americans. While we received many excellent submissions from great organizations, making it difficult to choose our winner, Civis Analytics selected the National Domestic Violence Hotline (The Hotline) as our contest winner. The Hotline wanted to gauge public opinion...

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Viewing the US Presidential Primary Through the Lens of Twitter

Viewing the US Presidential Primary Through the Lens of Twitter

by Civis Analytics

Some of our work on social media analytics was highlighted in a recent Wall Street Journal article, and it gives us a great opportunity to talk about some of the methods we use for making sense of the Twitter firehose. Civis Analytics takes a different approach from many companies in that we have a general methodology for imposing interpretable structure...

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Workflows in Python: Using Pipeline and GridSearchCV for More Compact and Comprehensive Code

Workflows in Python: Using Pipeline and GridSearchCV for More Compact and Comprehensive Code

by Katie M.

The last two posts in this series have been about getting a data science analysis quickly up and running, and then circling back to improve it or understand the patterns I find, for example, which algorithms are working best and why. The upshot was a better handle on my workflow, but I’m left with a lot of free parameters of...

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Workflows in Python: Curating Features and Thinking Scientifically about Algorithms

Workflows in Python: Curating Features and Thinking Scientifically about Algorithms

by Katie M.

This is the second post in a series about end-to-end data analysis in Python using scikit-learn Pipeline and GridSearchCV. In the first post, I got my data formatted for machine learning by encoding string features as integers, and then used the data to build several different models. I got things running really fast, which is great, but at the cost...

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Workflows in Python: Getting data ready to build models

Workflows in Python: Getting data ready to build models

by Katie M.

A couple of weeks ago, I had the opportunity to host a workshop at the Open Data Science Conference in San Francisco. During the workshop, I shared the process of rapid prototyping followed by iterating on the model I’ve built. When I’m building a machine learning model in scikit-learn, I usually don’t know exactly what my final model will look...

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Data Storytelling and Feature Creation

Data Storytelling and Feature Creation

by Civis Analytics

Employees at Civis have many interests; three at the top of the list are data, Chicago and biking to work. At the intersection of those three is the Divvy dataset, which details some of the rider information for the Chicago bicycle-sharing program. It is a fun dataset to play around with, even if it has a limited number of fields....

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The Healthcare Discussion on Twitter after the ACA Decision: Are we back to Square One?

The Healthcare Discussion on Twitter after the ACA Decision: Are we back to Square One?

by Keith I.

Here at Civis, we’re very interested in studying how events shape public opinion. Survey research is one great way to track public discourse, but ambient data from social media provides an excellent look at the organic conversation around an issue or event. We’ve been using Twitter to track US discussion on access to healthcare for months now, and the overall...

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A Tale of Two Recruiters

by Civis Analytics

Last Wednesday, Annie and I headed up to Carnegie Mellon University (my alma mater! Go Tartans!) for the Spark Start-Up Career Fair to find the next batch of Cives. Because we have a tendency to (over)analyze any data we can find, here are some interesting facts about our trip. According to CMU’s Career and Professional Development Center, 400 students registered...

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A Menagerie of Tattoos

A Menagerie of Tattoos

by Civis Analytics

When it comes to tattoos, Florida’s male inmates are five times more likely to get a dog tattoo than their female counterparts. Female inmates prefer cats two to one over men. I know this because one of the great things about working for Civis is finding and working with interesting datasets and a favorite of mine has been from the...

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