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#include "Mismatch.h"
#include <fstream>
#include <iostream>
#include <cstring>
#include <string>
#include <cstdlib>
#include "SuffixArray.h"
#include "TargetCorpus.h"
#include "Alignment.h"
#include "Vocabulary.h"
using namespace std;
enum {
UNANNOTATED = 0,
PRE_ALIGNED = 1,
POST_ALIGNED = 2,
UNALIGNED = 3,
MISALIGNED = 4,
ALIGNED = 5
};
Mismatch::Mismatch( SuffixArray *sa, TargetCorpus *tc, Alignment *a, INDEX sentence_id, INDEX position, int source_length, int target_length, int source_start, int source_end )
:m_suffixArray(sa)
,m_targetCorpus(tc)
,m_alignment(a)
,m_sentence_id(sentence_id)
,m_source_length(source_length)
,m_target_length(target_length)
,m_source_position(position)
,m_source_start(source_start)
,m_source_end(source_end)
,m_unaligned(true)
{
// initialize unaligned indexes
for (int i = 0; i < m_source_length; i++) {
m_source_unaligned[i] = true;
}
for (int i = 0; i < m_target_length; i++) {
m_target_unaligned[i] = true;
}
m_num_alignment_points =
m_alignment->GetNumberOfAlignmentPoints( sentence_id );
for(INDEX ap=0; ap<m_num_alignment_points; ap++) {
m_source_unaligned[ (int)m_alignment->GetSourceWord( sentence_id, ap ) ] = false;
m_target_unaligned[ (int)m_alignment->GetTargetWord( sentence_id, ap ) ] = false;
}
for(int i = source_start; i <= source_end; i++) {
if (!m_source_unaligned[ i ]) {
m_unaligned = false;
}
}
}
Mismatch::~Mismatch () {}
void Mismatch::PrintClippedHTML( ostream* out, int width )
{
int source_annotation[256], target_annotation[256];
vector< string > label_class;
label_class.push_back( "" );
label_class.push_back( "mismatch_pre_aligned" );
label_class.push_back( "mismatch_post_aligned" );
label_class.push_back( "null_aligned" );
label_class.push_back( "mismatch_misaligned" );
label_class.push_back( "mismatch_aligned" );
for(int i=0; i<m_source_length; i++) source_annotation[i] = UNANNOTATED;
for(int i=0; i<m_target_length; i++) target_annotation[i] = UNANNOTATED;
if (m_unaligned) {
// find alignment points for prior and next word(s) and
// center target phrase around those.
bool found_aligned = false;
for(int i=1; i<m_source_length && !found_aligned; i++) {
if (m_source_start-i >= 0) {
int word_id = m_source_start-i;
source_annotation[ word_id ] = UNALIGNED;
if (!m_source_unaligned[ word_id ]) {
found_aligned = true;
LabelSourceMatches( source_annotation, target_annotation, word_id, PRE_ALIGNED );
}
}
if (m_source_end+i < m_source_length) {
int word_id = m_source_end+i;
source_annotation[ word_id ] = UNALIGNED;
if (!m_source_unaligned[ word_id ]) {
found_aligned = true;
LabelSourceMatches( source_annotation, target_annotation, word_id, POST_ALIGNED );
}
}
}
}
// misalignment
else {
// label aligned output words
for(int i=m_source_start; i<=m_source_end; i++)
LabelSourceMatches( source_annotation, target_annotation, i, ALIGNED );
// find first and last
int target_start = -1;
int target_end = -1;
for(int i=0; i<m_target_length; i++)
if (target_annotation[i] == ALIGNED) {
if (target_start == -1)
target_start = i;
target_end = i;
}
// go over all enclosed target words
for(int i=target_start; i<=target_end; i++) {
// label other target words as unaligned or misaligned
if (m_target_unaligned[ i ])
target_annotation[ i ] = UNALIGNED;
else {
if (target_annotation[ i ] != ALIGNED)
target_annotation[ i ] = MISALIGNED;
// loop over aligned source words
for(INDEX ap=0; ap<m_num_alignment_points; ap++) {
if (m_alignment->GetTargetWord( m_sentence_id, ap ) == i) {
int source_word = m_alignment->GetSourceWord( m_sentence_id, ap );
// if not part of the source phrase -> also misaligned
if (source_word < m_source_start || source_word > m_source_end)
source_annotation[ source_word ] = MISALIGNED;
}
}
}
}
// closure
bool change = true;
while(change) {
change = false;
for(INDEX ap=0; ap<m_num_alignment_points; ap++) {
int source_word = m_alignment->GetSourceWord( m_sentence_id, ap );
int target_word = m_alignment->GetTargetWord( m_sentence_id, ap );
if (source_annotation[source_word] != UNANNOTATED &&
target_annotation[target_word] == UNANNOTATED) {
target_annotation[target_word] = MISALIGNED;
change = true;
}
if (source_annotation[source_word] == UNANNOTATED &&
target_annotation[target_word] != UNANNOTATED) {
source_annotation[source_word] = MISALIGNED;
change = true;
}
}
}
}
// print source
// shorten source context if too long
int sentence_start = m_source_position - m_source_start;
int context_space = width/2;
for(int i=m_source_start; i<=m_source_end; i++)
context_space -= m_suffixArray->GetWord( sentence_start + i ).size() + 1;
context_space /= 2;
int remaining = context_space;
int start_word = m_source_start;
for(; start_word>0 && remaining>0; start_word--)
remaining -= m_suffixArray->GetWord( sentence_start + start_word-1 ).size() + 1;
if (remaining<0 || start_word == -1) start_word++;
remaining = context_space;
int end_word = m_source_end;
for(; end_word<m_source_length && remaining>0; end_word++)
remaining -= m_suffixArray->GetWord( sentence_start + end_word ).size() + 1;
end_word--;
// output with markup
*out << "<tr><td class=\"pp_source_left\">";
char current_label = UNANNOTATED;
if (start_word>0) {
current_label = source_annotation[start_word-1];
*out << "... ";
}
for(int i=start_word; i<=end_word; i++) {
// change to phrase block
if (i == m_source_start) {
if (current_label != UNANNOTATED && i!=start_word)
*out << "</span>";
*out << "</td><td class=\"pp_source\">";
current_label = UNANNOTATED;
}
// change to labeled word
else if (source_annotation[i] != current_label &&
source_annotation[i] != ALIGNED) {
if (current_label != UNANNOTATED && i!=start_word)
*out << "</span>";
if (source_annotation[i] != UNANNOTATED)
*out << "<span class=\""
<< label_class[ source_annotation[i] ]
<< "\">";
current_label = source_annotation[i];
}
// output word
*out << m_suffixArray->GetWord( sentence_start + i ) << " ";
// change to right context block
if (i == m_source_end) {
*out << "</td><td class=\"pp_source_right\">";
current_label = UNANNOTATED;
}
}
if (current_label != UNANNOTATED && end_word>m_source_end)
*out << "</span>";
if (end_word<m_source_length-1)
*out << "... ";
// print target
// shorten target context if too long
int target_start = -1;
int target_end=0;
for(int i=0; i<m_target_length; i++)
if (target_annotation[i] != UNANNOTATED) {
if (target_start == -1)
target_start = i;
target_end = i;
}
context_space = width/2;
for(int i=target_start; i<=target_end; i++)
context_space -= m_targetCorpus->GetWord( m_sentence_id, i ).size() + 1;
while (context_space < 0) { // shorten matched part, if too long
context_space +=
m_targetCorpus->GetWord( m_sentence_id, target_start ).size() +
m_targetCorpus->GetWord( m_sentence_id, target_end ).size() + 2;
target_start++;
target_end--;
}
context_space /= 2;
remaining = context_space;
start_word = target_start;
for(; start_word>0 && remaining>0; start_word--) {
//cerr << "remaining: " << remaining << ", start_word: " << start_word << endl;
remaining -= m_targetCorpus->GetWord( m_sentence_id, start_word-1 ).size() + 1;
}
if (remaining<0 || start_word == -1) start_word++;
remaining = context_space;
end_word = target_end;
for(; end_word<m_target_length && remaining>0; end_word++) {
//cerr << "remaining: " << remaining << ", end_word: " << end_word << endl;
remaining -= m_targetCorpus->GetWord( m_sentence_id, end_word ).size() + 1;
}
end_word--;
// output with markup
*out << "</td><td class=\"mismatch_target\">";
current_label = UNANNOTATED;
if (start_word>0) {
current_label = target_annotation[start_word-1];
*out << "... ";
}
for(int i=start_word; i<=end_word; i++) {
if (target_annotation[i] != current_label) {
if (current_label != UNANNOTATED && i!=start_word)
*out << "</span>";
if (target_annotation[i] != UNANNOTATED)
*out << "<span class=\""
<< label_class[ target_annotation[i] ]
<< "\">";
current_label = target_annotation[i];
}
// output word
*out << m_targetCorpus->GetWord( m_sentence_id, i ) << " ";
}
if (current_label != UNANNOTATED && end_word>target_end)
*out << "</span>";
if (end_word<m_target_length-1)
*out << "... ";
*out << "</td></tr>";
}
void Mismatch::LabelSourceMatches(int *source_annotation, int *target_annotation, int source_id, int label )
{
for(INDEX ap=0; ap<m_num_alignment_points; ap++) {
if (m_alignment->GetSourceWord( m_sentence_id, ap ) == source_id) {
source_annotation[ source_id ] = label;
target_annotation[ m_alignment->GetTargetWord( m_sentence_id, ap ) ] = label;
}
}
}
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