The Advanced R Series: Clustering & Classification

Data rarely comes neatly labeled or structured, yet patterns still exist—even when they are not immediately obvious. Clustering and classification methods allow researchers to uncover structure in their data, group similar observations, and reduce dimensionality without imposing rigid assumptions about the underlying relationships.

This series introduces researchers to statistical and machine-learning methods for grouping, modeling, and interpreting high-dimensional data. Participants will learn a broad range of approaches—from hierarchical and centroid-based models to probabilistic, fuzzy, density-based, graph-based, and mixed-type clustering techniques—along with strategies for dimensionality reduction and fairness considerations. Emphasis is placed on understanding model assumptions, evaluating model performance, and selecting methods that align with the characteristics of the data rather than forcing data to fit inappropriate models.

All workshops will use R and RStudio, so some experience with R or other programming languages is encouraged but not required. See the R Fundamentals for Data Analysis for an introduction to R and RStudio. Attendees without prior experience are encouraged to review this content.

Fuzzy Clustering (workshop 3 of 11): This workshop introduces fuzzy clustering methods, with emphasis on the Fuzzy C-Means algorithm. We discuss how partial membership values are assigned, how the objective function governs cluster formation, and when fuzzy approaches are preferable to hard partitions. Participants will learn to implement fuzzy clustering in R, interpret membership matrices, and evaluate how uncertainty can be incorporated into cluster structure.

Application: Image Segmentation Data

Questions? Please reach out to the Centre for Scholarly Communication at csc.ok@ubc.ca.

A full schedule of workshops can be found at csc.ok.ubc.ca/workshops/