| #------------------------------------------------------------- |
| # |
| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you under the Apache License, Version 2.0 (the |
| # "License"); you may not use this file except in compliance |
| # with the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, |
| # software distributed under the License is distributed on an |
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| # KIND, either express or implied. See the License for the |
| # specific language governing permissions and limitations |
| # under the License. |
| # |
| #------------------------------------------------------------- |
| |
| # Read command line arguments |
| args <- commandArgs(TRUE) |
| |
| # Set options for numeric precision |
| options(digits=22) |
| |
| # Load required libraries |
| library("Matrix") |
| library("matrixStats") |
| |
| # Read matrix X from Matrix Market format files |
| X = as.matrix(readMM(paste(args[1], "X.mtx", sep=""))) |
| |
| # Create a column vector of ones with the same number of rows as X |
| ones_vector = matrix(1, nrow(X), 1) |
| |
| # Create a diagonal matrix from the ones_vector |
| diag_matrix = diag(as.vector(ones_vector)) |
| |
| # Compute the column-wise cumulative sum (matching DML behavior) |
| cumsum_matrix = apply(diag_matrix, 2, cumsum) |
| |
| # Perform the element-wise multiplication of X with the cumsum_matrix |
| R = X * cumsum_matrix |
| |
| # Write the result R |
| writeMM(as(R, "CsparseMatrix"), paste(args[2], "R", sep="")) |
| |
