multivariate statistics

Using the right tool for the job: Understanding the difference between unsupervised and supervised analyses of multivariate ecological data

Ecologists often collect multivariate data with the aim of determining which of many possible predictor variables are associated with a response. Unsupervised analyses (e.g. principal components analysis, PCA) find axes that explain variation in …

My first R package is on CRAN!

I woke up this morning to an email saying my first R package, holodeck, was on it’s way to CRAN! It’s a humble package, providing a framework for quickly slapping together test data with different degrees of correlation between variables and differentiation among levels of a categorical variable.

Cupcakes vs Muffins: Round 2

Have you ever pondered whether a muffin is really a breakfast food and not just an excuse to eat cake first thing in the morning? Well, you’ve come to the right blog post!

Interactive effects of drought severity and simulated herbivory on tea (Camellia sinensis) volatile and non-volatile metabolites

Plants often experience multiple sources of stress simultaneously, yet little is known about interactive effects of multiple stressors on plant metabolic responses. Plants are well known to respond to both drought and insect herbivory through the …

Use of partial least squares regression (PLS) in ecology

PLS is a powerful multivariate regression method that has many applications for ecological data. When is it best used, what are its advantages, and how should you report your results?

Interactive effects of drought severity and herbivory on tea (Camellia sinensis) volatile and non-volatile metabolites.

Poster presentation. Plants often experience multiple sources of stress simultaneously, yet little is known about interactive effects of multiple stressors on plant metabolic responses. Plants are well known to respond to both drought and insect …

Can pests rescue tea quality from climate change?

Insect attack is usually considered bad for tea yield and quality. However, it is well known that plants produce many secondary metabolites in response to insect attack. Many of these secondary metabolites are important for tea quality, and some …

Cupcake Update

I know you’re all waiting on the edge of your seats for an update on the cupcakes vs. muffins data science project, but unfortunately I don’t have any answers to that age-old question* yet.

Cupcakes vs. Muffins

One thing I’ve learned from my PhD at Tufts is that I really enjoy working data wrangling, visualization, and statistics in R. I enjoy it so much, that lately I’ve been strongly considering a career in data science after graduation.

Combined Effects of Drought and Herbivory on Tea Metabolism