Intro to Predictive Coding: Overview & Interpretation of Terminology June 2014 | Page 25

Glossary
Elusion – an information retrieval measure of the
proportion of responsive documents that
have been missed. Most often used as a quality
assurance measure in which a sample of nonretrieved documents is evaluated to determine
whether a review has met reasonable criteria for
completeness.
Judgmental sampling – a sampling process where
the objects are selected on the basis of some
person’s judgments about their relative importance
rather than on a random basis. Judgmental
sampling sometimes refers to the use of a seed set
or preselected documents used to train predictive
coding systems.

Unlike random samples, judgmental samples are
not typically representative of the collection or
population from which they are drawn. It is not
possible to extrapolate from the characteristics of a
judgmental sample to the characteristics of the
population or collection.