R中的多维稀疏数组(3路张量) [英] Multidimensional sparse array (3-way tensor) in R

问题描述

使用 Matrix 包，我可以创建一个二维稀疏矩阵.

Using the Matrix package I can create a two-dimensional sparse matrix.

有人可以推荐一个可以让我在 R 中创建多维(特别是 3 维)稀疏矩阵(数组，或技术上的三向张量)的包吗?

Can someone suggest a package that would allow me to create a multidimensional (specifically a 3-dimensional) sparse matrix (array, or technically a three-way tensor) in R?

推荐答案

slam 包有一个 simple_sparse_array 类:http://finzi.psych.upenn.edu/R/library/slam/html/array.html ，虽然它只是支持索引和强制(如果你想做张量运算或元素算术，而不转换回常规的密集数组，你必须自己实现它们......)

The slam package has a simple_sparse_array class: http://finzi.psych.upenn.edu/R/library/slam/html/array.html , although it only has support for indexing and coercion (if you wanted to do tensor operations, or elementwise arithmetic, without converting back to a regular dense array, you'd have to implement them yourself ...)

我通过这样做找到了这个

I found this by doing

library("sos")
findFn("{sparse array}")

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