| #------------------------------------------------------------- |
| # |
| # 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. |
| # |
| #------------------------------------------------------------- |
| |
| args <- commandArgs(TRUE) |
| library("Matrix") |
| |
| X = readMM(paste(args[1], "X.mtx", sep="")); |
| W = readMM(paste(args[1], "W.mtx", sep="")); |
| H = readMM(paste(args[1], "H.mtx", sep="")); |
| |
| k = as.integer(args[2]); |
| eps = as.double(args[3]); |
| max_iter = as.integer(args[4]); |
| iter = 1; |
| |
| while( iter < max_iter ) { |
| H = (H*(t(W)%*%(X/(W%*%H+eps)))) / (colSums(W)%*%matrix(1,1,ncol(H))); |
| W = (W*((X/(W%*%H+eps))%*%t(H))) / (matrix(1,nrow(W),1)%*%t(rowSums(H))); |
| obj = sum(W%*%H) - sum(X*log(W%*%H+eps)); |
| print(paste("obj=", obj)) |
| iter = iter + 1; |
| } |
| |
| writeMM(as(W,"CsparseMatrix"), paste(args[5], "W", sep="")); |
| writeMM(as(H,"CsparseMatrix"), paste(args[5], "H", sep="")); |