source: trunk/test/nni_test.cc @ 1726

Last change on this file since 1726 was 1726, checked in by Jari Häkkinen, 12 years ago

Fixes #476. Improved estimate() doc and added test on estimate() return value.

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File size: 4.8 KB
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1// $Id: nni_test.cc 1726 2009-01-15 21:15:26Z jari $
2
3/*
4  Copyright (C) 2004 Jari Häkkinen
5  Copyright (C) 2005 Jari Häkkinen, Peter Johansson
6  Copyright (C) 2006 Jari Häkkinen
7  Copyright (C) 2007, 2008 Jari Häkkinen, Peter Johansson
8
9  This file is part of the yat library, http://dev.thep.lu.se/yat
10
11  The yat library is free software; you can redistribute it and/or
12  modify it under the terms of the GNU General Public License as
13  published by the Free Software Foundation; either version 3 of the
14  License, or (at your option) any later version.
15
16  The yat library is distributed in the hope that it will be useful,
17  but WITHOUT ANY WARRANTY; without even the implied warranty of
18  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19  General Public License for more details.
20
21  You should have received a copy of the GNU General Public License
22  along with yat. If not, see <http://www.gnu.org/licenses/>.
23*/
24
25#include "Suite.h"
26
27#include "yat/utility/FileUtil.h"
28#include "yat/utility/Matrix.h"
29#include "yat/utility/kNNI.h"
30#include "yat/utility/WeNNI.h"
31
32#include <cmath>
33#include <iostream>
34#include <fstream>
35#include <string>
36
37using namespace theplu::yat;
38
39void check_file_access(std::string& str)
40{
41  if (utility::FileUtil(str).permissions("r")) {
42    std::cerr << "test_nni: Cannot access file " << str << std::endl;
43    exit(-1);
44  }
45}
46
47int main(int argc, char* argv[])
48{
49  test::Suite suite(argc, argv);
50
51  unsigned int neighbours=3;
52  std::string knni_data(test::filename("data/knni_matrix.data"));
53  std::string knni_result(test::filename("data/knni_result.data"));
54  std::string knni_weight(test::filename("data/knni_weight.data"));
55  std::string wenni_data(test::filename("data/knni_matrix.data"));
56  std::string wenni_result(test::filename("data/wenni_result.data"));
57  std::string wenni_weight(test::filename("data/wenni_weight.data"));
58  check_file_access(knni_data);
59  check_file_access(knni_result);
60  check_file_access(knni_weight);
61  check_file_access(wenni_data);
62  check_file_access(wenni_result);
63  check_file_access(wenni_weight);
64
65  // test kNNI
66  std::ifstream data_stream(knni_data.c_str());
67  std::ifstream weight_stream(knni_weight.c_str());
68  utility::Matrix data(data_stream);
69  utility::Matrix weight(weight_stream);
70  utility::kNNI knni(data,weight,neighbours);
71  unsigned int nonimputed=knni.estimate();
72  if (!suite.equal(nonimputed,15)) {
73    suite.err() << "kNNI FAILED, unexpected number of non imputed rows" << std::endl;
74    suite.add(false);
75  }
76  std::ifstream control_stream(knni_result.c_str());
77  utility::Matrix control(control_stream);
78  double error_bound = 1e-11;
79  for (unsigned int i=0; i<control.rows(); i++)
80    for (unsigned int j=0; j<control.columns(); j++)
81      if (!suite.equal_fix(knni.imputed_data()(i,j),control(i,j),error_bound)) {
82        suite.err() << "kNNI FAILED, error on row " << i << " and " 
83                    << "column " << j << " is" << std::endl;
84        suite.add(false); // calculation result out of accepted error bounds
85      }
86  control_stream.close();
87  data_stream.close();
88  weight_stream.close();
89
90  // test WeNNI
91  data_stream.open(wenni_data.c_str());
92  data=utility::Matrix(data_stream);
93  weight_stream.open(wenni_weight.c_str());
94  weight=utility::Matrix(weight_stream);
95  utility::WeNNI wenni(data,weight,neighbours);
96  nonimputed=wenni.estimate();
97  if (!suite.equal(nonimputed,15)) {
98    suite.err() << "WeNNI FAILED, unexpected number of non imputed rows" << std::endl;
99    suite.add(false);
100  }
101  control_stream.open(wenni_result.c_str());
102  control=utility::Matrix(control_stream);
103  for (unsigned int i=0; i<control.rows(); i++)
104    for (unsigned int j=0; j<control.columns(); j++)
105      if (!suite.equal_fix(wenni.imputed_data()(i,j),control(i,j),error_bound)){
106        suite.err() << "WeNNI FAILED, error on row " << i << " and " 
107                    << "column " << j << std::endl;
108        suite.add(false); // calculation result out of accepted error bounds
109      }
110  control_stream.close();
111  data_stream.close();
112  weight_stream.close();
113
114  // test WeNNI with binary weights
115  data_stream.open(knni_data.c_str());
116  data=utility::Matrix(data_stream);
117  weight_stream.open(knni_weight.c_str());
118  weight=utility::Matrix(weight_stream);
119  utility::WeNNI wenni2(data,weight,neighbours);
120  nonimputed=wenni2.estimate();
121  if (!suite.equal(nonimputed,15)) {
122    suite.err() << "binary WeNNI FAILED, unexpected number of non imputed rows"
123                << std::endl;
124    suite.add(false);
125  }
126  control_stream.open(knni_result.c_str());
127  control=utility::Matrix(control_stream);
128  for (unsigned int i=0; i<control.rows(); i++)
129    for (unsigned int j=0; j<control.columns(); j++)
130      if (!suite.equal_fix(wenni2.imputed_data()(i,j),control(i,j),error_bound)){
131        suite.err() << "WeNNI binary weight test FAILED.\nError on row " << i
132                    << " and column " << j << std::endl;
133        suite.add(false); // calculation result out of accepted error bounds
134      }
135  control_stream.close();
136  data_stream.close();
137  weight_stream.close();
138
139  return suite.return_value();
140}
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