void SimpleWordMapper::update_map(const Term& term, size_t count,
std::map<Term, size_t>& map, Output& output) {
std::map<Term, size_t>::iterator iter = map.find(term);
if (iter == map.end()) {
map[output.copy_term(term)] = count;
}
else {
map[term] += count;
}
}
