In the recent GDAT class, confidence intervals (CI) for performance data were discussed. Their generalization to confidence bands (CB) for scalability projections using the USL model also came up informally. I showed a prototype plot but it was an ugly hack. Later requests from GDAT attendees to apply CBs to their own data meant I had...
In the recent GDAT class, confidence intervals (CI) for performance data were discussed. Their generalization to confidence bands (CB) for scalability projections using the USL model also came up informally. I showed a prototype plot but it was an ugly hack. Later requests from GDAT attendees to apply CBs to their own data meant I had...
The ggplot2 package for R is an amazing system for creating entirely new visualizations of data. It allows data analysts to tell a detailed, meaningful and yet easy-to-interpret story about complex and/or unusual data sets. To promote more data stories being told, ggplot2 author Hadley Wickham has organized a ggplot2 case study competition. Simply create a new visualization of...
So if you had a robot that was an expert at botany - would you have a bot botanist? Among other things, it would need to to distinguish flowers through vision and image processing, and be able to classify various kinds of plants based upon specif...
So if you had a robot that was an expert at botany - would you have a bot botanist? Among other things, it would need to to distinguish flowers through vision and image processing, and be able to classify various kinds of plants based upon specif...
The NIST's The Engineering Statistics Handbook includes an Introduction to Time Series Analysis which provides a great way of demonstrating how R can be used to make such calculations. This post replicates the analys...
The NIST's The Engineering Statistics Handbook includes an Introduction to Time Series Analysis which provides a great way of demonstrating how R can be used to make such calculations. This post replicates the analys...
So after yesterday’s post on Simple Simulation using Copulas I got a very nice email that basically begged the question, “Dude, why are you making this so hard?” The author pointed out that if what I really want is a Gaussian correlation structure for Gaussian distributions then I could simply use the mvrnorm() function from
Last week I was asked to visualise some heart rate data from an experiment. ... The standard way of displaying a time series (that is, a numeric variable that changes over time) is with a line plot. ... The experimenters, however, wanted a bar chart. I hadn't considered this use of a barchart before, so it was interesting...
The Democratic major-party vote share of US House elections 2002-2008 visualized 5 different ways.
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
