Background As part of our lab accreditation requirements, we have to provide measurement uncertianty estimates for all tests at all hospital sites. As you might imagine, with thousands of testcodes in Sunquest LIS, getting all the coefficients of variation (CVs) represents a daunting task for the quality technologist to accomplish. ...

Motivation The Life Changing Magic of Tidying Text is one of those post I keep re-reading from time to time and I wanted to try the analysis with songs. I shall use lp package, a small data package I had for experimental purposes. Note: If some images appear too small ...

Motivation The Life Changing Magic of Tidying Text is one of those post I keep re-reading from time to time and I wanted to try the analysis with songs. I shall use lp package, a small data package I had for experimental purposes. Note: If some images appear too small ...

I am currently wrestling with how to analyze data from a stepped-wedge designed cluster randomized trial. A few factors make this analysis particularly interesting. First, we want to allow for the possibility that between-period site-level correlation will decrease (or decay) over time. Second, there is possibly additional clustering at the ...

Today I’m departing a little from the problem/context/solution format of these posts to share some things I learned from last week’s rstudio::conf. When I started in R a few years ago, I never thought I would have any place at a coding conference for computer ...

The ‘gridRecords‘ function, which has just been added to the ‘fuzzySim‘ package (from version 2.6 on), takes a raster stack and a set of spatial coordinates of a species’ presence (and optionally absence) records, and returns a data frame with … Continue reading →

What is a survey? A systematic method for gathering information from a sample of entities for the purposes of constructing quantitative descriptors of the attributes of the larger population of which the entities are members Questions when identifying a survey data source: What is the target population? What is the ...

The latest version of the rOpenSci av package includes some useful new tools for working with audio data. We have added functions for reading, cutting, converting, transforming, and plotting audio data in any popular audio / video format (mp3, mkv, aac, etc). The functionality can either be used by itself, or ...

As of writing this blog-post, today is February 2nd, 2020. Or as I would say it, 2nd of February, 2020. There is nothing magical about it, it is just a sequence of numbers. On a boring Sunday evening, what could…Read more ›

Who are in our prisons? According to a study conducted by the Bureau of Justice Statistics in 2016, the United States has a prison population of approximately 2.2 million people, firmly cementing the United States as the nation with the highest incarceration rate in the world. To provide some context as to ...

Design: Dan LaBar

Introduction Using Machine Learning (ML) and past price data to predict the next periods price or direction in the stock market is not new, neither does it produce any meaningful predictions. In this post I collapse down a series of asset time series data into a simple classification problem and ...

Ooh, see the fire is sweepin’Our very street todayBurns like a red coal carpetMad bull lost its way(Gimme Shelter, The Rolling Stones) After following this easy tutorial, you will be able to create tiled images from a photograph. You may want to use your own portrait or some ...