90 lines
2.6 KiB
C++
90 lines
2.6 KiB
C++
#ifndef CPPJIEBA_QUERYSEGMENT_H
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#define CPPJIEBA_QUERYSEGMENT_H
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#include <algorithm>
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#include <set>
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#include <cassert>
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#include "limonp/Logging.hpp"
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#include "DictTrie.hpp"
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#include "SegmentBase.hpp"
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#include "FullSegment.hpp"
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#include "MixSegment.hpp"
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#include "Unicode.hpp"
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namespace cppjieba {
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class QuerySegment: public SegmentBase {
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public:
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QuerySegment(const string& dict, const string& model, const string& userDict = "")
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: mixSeg_(dict, model, userDict),
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trie_(mixSeg_.GetDictTrie()) {
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}
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QuerySegment(const DictTrie* dictTrie, const HMMModel* model)
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: mixSeg_(dictTrie, model), trie_(dictTrie) {
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}
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~QuerySegment() {
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}
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void Cut(const string& sentence, vector<string>& words) const {
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Cut(sentence, words, true);
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}
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void Cut(const string& sentence, vector<string>& words, bool hmm) const {
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vector<Word> tmp;
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Cut(sentence, tmp, hmm);
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GetStringsFromWords(tmp, words);
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}
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void Cut(const string& sentence, vector<Word>& words, bool hmm = true) const {
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PreFilter pre_filter(symbols_, sentence);
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PreFilter::Range range;
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vector<WordRange> wrs;
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wrs.reserve(sentence.size()/2);
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while (pre_filter.HasNext()) {
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range = pre_filter.Next();
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Cut(range.begin, range.end, wrs, hmm);
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}
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words.clear();
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words.reserve(wrs.size());
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GetWordsFromWordRanges(sentence, wrs, words);
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}
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void Cut(RuneStrArray::const_iterator begin, RuneStrArray::const_iterator end, vector<WordRange>& res, bool hmm) const {
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//use mix Cut first
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vector<WordRange> mixRes;
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mixSeg_.Cut(begin, end, mixRes, hmm);
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vector<WordRange> fullRes;
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for (vector<WordRange>::const_iterator mixResItr = mixRes.begin(); mixResItr != mixRes.end(); mixResItr++) {
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if (mixResItr->Length() > 2) {
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for (size_t i = 0; i + 1 < mixResItr->Length(); i++) {
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WordRange wr(mixResItr->left + i, mixResItr->left + i + 1);
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if (trie_->Find(wr.left, wr.right + 1) != NULL) {
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res.push_back(wr);
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}
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}
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}
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if (mixResItr->Length() > 3) {
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for (size_t i = 0; i + 2 < mixResItr->Length(); i++) {
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WordRange wr(mixResItr->left + i, mixResItr->left + i + 2);
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if (trie_->Find(wr.left, wr.right + 1) != NULL) {
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res.push_back(wr);
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}
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}
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}
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res.push_back(*mixResItr);
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}
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}
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private:
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bool IsAllAscii(const Unicode& s) const {
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for(size_t i = 0; i < s.size(); i++) {
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if (s[i] >= 0x80) {
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return false;
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}
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}
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return true;
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}
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MixSegment mixSeg_;
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const DictTrie* trie_;
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}; // QuerySegment
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} // namespace cppjieba
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#endif
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