Text Analysis

Text Analysis: Statistical analysis when the observation is a text document of some kind.

Supervised Learning

Supervised Learning: Estimating the average in a category vs. individual classification, dealing with measurement error, extensions to an apparently unrelated application in epidemiology and public health.

2012 Lecture Notes: Slides [to print] 

Videos ( PDF iconPrintable slides to accompany videos )

 Quantities of Interest in Text Analysis and Representing Text as Numbers (22:27)
  Existing Statistical Approaches to Estimating Proportions in Categories (10:22)
 Using Misclassification Rates to Correct Proportions (12:55)
  Verbal Autopsy Methods (07:18)

Unsupervised Learning

Unsupervised Learning: fully automated vs computer assisted cluster analysis; why humans are incapable of learning from text as well as computers & why computers can't do it without humans.

2012 Lecture Notes: Slides (no 'to print' version)

Videos ( PDF iconPrintable slides to accompany videos )

 New Strategy for Cluster Analysis (28:22)
  Applications of Cluster Analysis (19:33)