| #------------------------------------------------------------- |
| # |
| # 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. |
| # |
| #------------------------------------------------------------- |
| |
| X = read($1) |
| k = $2; |
| |
| # one hot encoding |
| m = nrow(X) |
| n = ncol(X) |
| fdom = colMaxs(X); |
| foffb = t(cumsum(t(fdom))) - fdom; |
| foffe = t(cumsum(t(fdom))) |
| rix = matrix(seq(1,m)%*%matrix(1,1,n), m*n, 1) |
| cix = matrix(X + foffb, m*n, 1); |
| X2 = table(rix, cix); #one-hot encoded |
| |
| [PC, V] = pca(X=X2, K=k) |
| |
| write(PC, $3) |
| write(V, $4) |
