This is the package for paper: "ISLET: Fast and Optimal Low-Rank Tensor Regression via Importance Sketching" by Anru Zhang, Yuetian Luo, Garvesh Raskutti and Ming Yuan (2020) SIAM Journal on Mathematics of Data Science.
You can install it directly from GitHub through devtools:
library(devtools)
devtools::install_github("yuetianluo/ISLET")
library(ISLET)
See "manual.pdf" and "ISLET-example.R" for reference.