Term	Book	Chapter	Definition
Principal Component Analysis (PCA)	Semantic Vectors and Cognitive Science	Chapter 1: Introduction to Semantic VectorsSemantic vectors are a fundamental concept in the field of natural language processing (NLP) and cognitive science. They represent words, phrases, or even entire documents as points in a high-dimensional vector s	A statistical procedure that uses an orthogonal transformation to convert a set of observations of possibly correlated variables into a set of values of linearly uncorrelated variables.
Principal Component Analysis (PCA)	Semantic Vectors and Cognitive Science	Chapter 2: Mathematical Foundations	A linear technique that transforms the original data into a new coordinate system where the greatest variances by any projection of the data come to lie on the first few coordinates (called principal components).