https://DevOpsCloud.io -- Cloud Monk Losang Jinpa

“A vector that is used in the representation of a *ragged array. For example, the elements of a row-ragged array, A, would be stored row by row in a vector B. The ith element of the access vector would then point to the position in B where the first element of the ith row of A was stored. A column-ragged array would be similarly represented using an access vector referring to the beginning of columns and a listing of the elements column by column.” (Fair Use ODCS)