Expectdata is an R package that makes it easy to test assumptions about a data frame before conducting analyses. Below is a concise tour of some of the data assumptions expectdata can test for you. For example, Note: assertr is an ropensci project t...

How can we use data analytics to increase our self-knowledge? Along with biofeedback from digital devices like FitBit, less structured sources such as sent emails can provide insights. E.g. here it seems my communication took a sudden more positive tu...

Is your deep convolutional network misclassifying images? You can find out why with a heatmap of class activation overlaid on its misclassified pictures. A heatmap overlay shows parts of an image most activated in a neural network’s last convolution...

Apartment hunting in an expensive city is leading me to curses and exclamations. Following are some outstanding examples of insanely priced apartments in Portland, OR, run through Google Deep Dream in hopes of my understanding why people pay so much for a small box. These listings will be gone in ...

This has been a great Stanley Cup playoffs for Washington Capitals fans such as myself. With so much breath holding, I’ve paid more attention this year than recent years. As a former goalie myself, my curiosity grew towards: Who are these goalies so much better than me they beat ...

Some cities are more appealing for a data scientist to live than others. Several websites list best cities for data scientists, but their lists don’t agree and their methods are not explained, so the quality of the analysis and ability to determine which individuals their results can be inferred ...

Downloading data from Twitter in R, running it through Azure ML Studio and analyzing the output back in R. It turns out to be rather involved. Here are the steps I’ve taken so far. 1. Create a Twitter account Using Twitter’s API requires a Twitter account. Also need to ...

Highlights from Conference on Statistical Practice. Friday 2/16/2018 8:00 AM Keynote Address & 9:15 AM Working with Messy Data 11:00 AM Streamlining Your Work Using (Shiny) Apps 2:00 PM Data Mining Algorithms / Presenting and Storytelling 3:45 PM Working with Health Care Data Posters I Wish I’d Seen Additional Sessions I Wish I’d Attended Saturday 2/17/2018 9:15 AM ...

Highlights from Conference on Statistical Practice. Friday 2/16/2018 8:00 AM Keynote Address & 9:15 AM Working with Messy Data 11:00 AM Streamlining Your Work Using (Shiny) Apps 2:00 PM Data Mining Algorithms / Presenting and Storytelli...

Some highlights from Conference on Statistical Practice sessions: to keep it simple, just a few notes and my favorite slide per session I attended. I work in Population Health Analytics at Legacy Hospital System in Portland, Oregon, so some of these ...

Introduction Last few months I’ve gained some weight so I’m curious if analytics can give insight and show opportunities to get my BMI to normal weight. As a first step, an inquiry into a hypothesis about calories vs. sleep. Bottom line up fr...

This code simulates Normal(0,1), and this visualization shows smaller samples can vary much more than large samples from the true distribution. Maybe it’s not a fascinating picture although there is a deep mystery or two in there. Can we know the tru...