Array Operations
Provides support functions enabling fast array operations
Data Type Transformations
Encoding Categorical Variables
Coding categorical variables into one-hot, dummy, effects, orthogonal, and Helmert
Low-Rank Matrix Factorization
Represent an incomplete matrix using a low-rank approximation
Matrix Operations
Provides basic matrix operations for matrices that are too big to fit in memory
Norms and Distance Functions
Useful utility functions for basic linear algebra operations
Path
Performs regular pattern matching over a sequence of rows
Pivot
Perform basic OLAP type operations on data
Sessionize
Performs time-oriented session reconstruction on a data set comprising a sequence of events
Single Value Decomposition
Factorization of a real or complex matrix, with many useful applications in signal processing and statistics
Sparse Vectors
Provides compressed storage of vectors that have many duplicate elements
Stemming
Provides a basic stemming operation for text input using the Porter Stemming Algorithm
Last modified March 11, 2024 at 3:25 PM EST: Creation of the expression expression library (3110a17)