1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/***********************************************************************
Moses - factored phrase-based language decoder
Copyright (C) 2011- University of Edinburgh
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
***********************************************************************/
#include <iostream>
#include <sstream>
#include <boost/functional/hash.hpp>
#include "util/file_piece.hh"
#include "util/tokenize_piece.hh"
#include "FeatureArray.h"
#include "FeatureDataIterator.h"
using namespace std;
using namespace util;
namespace MosesTuning
{
int ParseInt(const StringPiece& str )
{
char* errIndex;
//could wrap?
int value = static_cast<int>(strtol(str.data(), &errIndex,10));
if (errIndex == str.data()) {
throw util::ParseNumberException(str);
}
return value;
}
float ParseFloat(const StringPiece& str)
{
char* errIndex;
float value = static_cast<float>(strtod(str.data(), &errIndex));
if (errIndex == str.data()) {
throw util::ParseNumberException(str);
}
return value;
}
bool operator==(FeatureDataItem const& item1, FeatureDataItem const& item2)
{
return item1.dense==item1.dense && item1.sparse==item1.sparse;
}
size_t hash_value(FeatureDataItem const& item)
{
size_t seed = 0;
boost::hash_combine(seed,item.dense);
boost::hash_combine(seed,item.sparse);
return seed;
}
FeatureDataIterator::FeatureDataIterator() {}
FeatureDataIterator::FeatureDataIterator(const string& filename)
{
m_in.reset(new FilePiece(filename.c_str()));
readNext();
}
FeatureDataIterator::~FeatureDataIterator() {}
void FeatureDataIterator::readNext()
{
m_next.clear();
try {
StringPiece marker = m_in->ReadDelimited();
if (marker != StringPiece(FEATURES_TXT_BEGIN)) {
throw FileFormatException(m_in->FileName(), marker.as_string());
}
// size_t sentenceId =
m_in->ReadULong();
size_t count = m_in->ReadULong();
size_t length = m_in->ReadULong();
m_in->ReadLine(); //discard rest of line
for (size_t i = 0; i < count; ++i) {
StringPiece line = m_in->ReadLine();
m_next.push_back(FeatureDataItem());
for (TokenIter<AnyCharacter, true> token(line, AnyCharacter(" \t")); token; ++token) {
TokenIter<AnyCharacterLast,false> value(*token,AnyCharacterLast("="));
if (!value) throw FileFormatException(m_in->FileName(), line.as_string());
StringPiece first = *value;
++value;
if (!value) {
//regular feature
float floatValue = ParseFloat(first);
m_next.back().dense.push_back(floatValue);
} else {
//sparse feature
StringPiece second = *value;
float floatValue = ParseFloat(second);
m_next.back().sparse.set(first.as_string(),floatValue);
}
}
if (length != m_next.back().dense.size()) {
throw FileFormatException(m_in->FileName(), line.as_string());
}
}
StringPiece line = m_in->ReadLine();
if (line != StringPiece(FEATURES_TXT_END)) {
throw FileFormatException(m_in->FileName(), line.as_string());
}
} catch (EndOfFileException &e) {
m_in.reset();
}
}
void FeatureDataIterator::increment()
{
readNext();
}
bool FeatureDataIterator::equal(const FeatureDataIterator& rhs) const
{
if (!m_in && !rhs.m_in) {
return true;
} else if (!m_in) {
return false;
} else if (!rhs.m_in) {
return false;
} else {
return m_in->FileName() == rhs.m_in->FileName() &&
m_in->Offset() == rhs.m_in->Offset();
}
}
const vector<FeatureDataItem>& FeatureDataIterator::dereference() const
{
return m_next;
}
}
|
