| #------------------------------------------------------------- |
| # |
| # 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. |
| # |
| #------------------------------------------------------------- |
| |
| num_records = $1; |
| num_features = $2; |
| |
| p = $3; #sparsity |
| num_categories = $4; #num classes |
| is_intercept = $5==1; |
| |
| stdevLT = 1.0; |
| beta_range = 3.0 * stdevLT / sqrt (num_features * p); |
| |
| if (is_intercept) { |
| intercept = Rand (rows = 1, cols = num_categories - 1, min = -1.0, max = 1.0); |
| } |
| |
| X = Rand( rows = num_records, |
| cols = num_features, |
| min = 1, |
| max = 5, |
| pdf = "uniform", |
| sparsity = p ); |
| |
| B = Rand (rows = num_features, |
| cols = num_categories - 1, |
| min = -1.0, |
| max = 1.0, |
| pdf = "uniform", |
| sparsity = 1.0) * beta_range; |
| |
| LT = X %*% B; |
| if (is_intercept) { |
| LT = LT + matrix (1, rows = num_records, cols = 1) %*% intercept; |
| } |
| |
| Prob = exp (LT); |
| Prob = Prob / (1.0 + rowSums(Prob)); |
| Prob = t(cumsum (t(Prob))); |
| |
| r = Rand (rows = num_records, cols = 1, min = 0, max = 1, pdf = "uniform"); |
| Y = 1 + rowSums (Prob < r); |
| |
| # ensure all classes are represented |
| Y[(num_records-num_categories+1):num_records,1] = seq(1,num_categories); |
| |
| write(X, $6, format=$8) |
| write(Y, $7, format=$8); |