diff --git a/ChangeLog.md b/ChangeLog.md
index 7c7c60b..475d6a6 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -5,6 +5,7 @@
 1. 支持多个userdict载入，多词典路径用英文冒号(:)作为分隔符，就当是向环境变量PATH致敬，哈哈。
 2. userdict是不带权重的，之前对于新的userword默认设置词频权重为最大值，现已支持可配置，默认使用中位值。
 3. 【兼容性预警】修改一些代码风格，比如命名空间小写化，从CppJieba变成cppjieba。
+4. 【兼容性预警】弃用Application.hpp, 取而代之使用Jieba.hpp ，接口也进行了大幅修改，函数风格更统一，和python版本的Jieba分词更一致。
 
 ## v3.2.1
 
diff --git a/src/DictTrie.hpp b/src/DictTrie.hpp
index 192fa94..e46878b 100644
--- a/src/DictTrie.hpp
+++ b/src/DictTrie.hpp
@@ -44,7 +44,7 @@ class DictTrie {
       return false;
     }
     active_node_infos_.push_back(node_info);
-    trie_->insertNode(node_info.word, &active_node_infos_.back());
+    trie_->InsertNode(node_info.word, &active_node_infos_.back());
     return true;
   }
 
@@ -120,7 +120,7 @@ class DictTrie {
         }
       }
     }
-    LogInfo("load userdicts[%s] ok. lines[%u]", filePaths.c_str(), lineno);
+    LogInfo("Load userdicts[%s] ok. lines[%u]", filePaths.c_str(), lineno);
   }
 
   bool MakeNodeInfo(DictUnit& node_info,
diff --git a/src/FullSegment.hpp b/src/FullSegment.hpp
index 0464e05..bf70751 100644
--- a/src/FullSegment.hpp
+++ b/src/FullSegment.hpp
@@ -26,7 +26,7 @@ class FullSegment: public SegmentBase {
       delete dictTrie_;
     }
   }
-  void cut(const string& sentence, 
+  void Cut(const string& sentence, 
         vector<string>& words) const {
     PreFilter pre_filter(symbols_, sentence);
     PreFilter::Range range;
@@ -34,11 +34,11 @@ class FullSegment: public SegmentBase {
     uwords.reserve(sentence.size());
     while (pre_filter.HasNext()) {
       range = pre_filter.Next();
-      cut(range.begin, range.end, uwords);
+      Cut(range.begin, range.end, uwords);
     }
     TransCode::encode(uwords, words);
   }
-  void cut(Unicode::const_iterator begin, 
+  void Cut(Unicode::const_iterator begin, 
         Unicode::const_iterator end, 
         vector<Unicode>& res) const {
     //resut of searching in trie tree
diff --git a/src/HMMModel.hpp b/src/HMMModel.hpp
index 625507c..a58cfd6 100644
--- a/src/HMMModel.hpp
+++ b/src/HMMModel.hpp
@@ -26,11 +26,11 @@ struct HMMModel {
     emitProbVec.push_back(&emitProbE);
     emitProbVec.push_back(&emitProbM);
     emitProbVec.push_back(&emitProbS);
-    loadModel(modelPath);
+    LoadModel(modelPath);
   }
   ~HMMModel() {
   }
-  void loadModel(const string& filePath) {
+  void LoadModel(const string& filePath) {
     ifstream ifile(filePath.c_str());
     if (!ifile.is_open()) {
       LogFatal("open %s failed.", filePath.c_str());
@@ -38,9 +38,9 @@ struct HMMModel {
     string line;
     vector<string> tmp;
     vector<string> tmp2;
-    //load startProb
-    if (!getLine(ifile, line)) {
-      LogFatal("load startProb");
+    //Load startProb
+    if (!GetLine(ifile, line)) {
+      LogFatal("Load startProb");
     }
     split(line, tmp, " ");
     if (tmp.size() != STATUS_SUM) {
@@ -50,10 +50,10 @@ struct HMMModel {
       startProb[j] = atof(tmp[j].c_str());
     }
 
-    //load transProb
+    //Load transProb
     for (size_t i = 0; i < STATUS_SUM; i++) {
-      if (!getLine(ifile, line)) {
-        LogFatal("load transProb failed.");
+      if (!GetLine(ifile, line)) {
+        LogFatal("Load transProb failed.");
       }
       split(line, tmp, " ");
       if (tmp.size() != STATUS_SUM) {
@@ -64,27 +64,27 @@ struct HMMModel {
       }
     }
 
-    //load emitProbB
-    if (!getLine(ifile, line) || !loadEmitProb(line, emitProbB)) {
-      LogFatal("load emitProbB failed.");
+    //Load emitProbB
+    if (!GetLine(ifile, line) || !LoadEmitProb(line, emitProbB)) {
+      LogFatal("Load emitProbB failed.");
     }
 
-    //load emitProbE
-    if (!getLine(ifile, line) || !loadEmitProb(line, emitProbE)) {
-      LogFatal("load emitProbE failed.");
+    //Load emitProbE
+    if (!GetLine(ifile, line) || !LoadEmitProb(line, emitProbE)) {
+      LogFatal("Load emitProbE failed.");
     }
 
-    //load emitProbM
-    if (!getLine(ifile, line) || !loadEmitProb(line, emitProbM)) {
-      LogFatal("load emitProbM failed.");
+    //Load emitProbM
+    if (!GetLine(ifile, line) || !LoadEmitProb(line, emitProbM)) {
+      LogFatal("Load emitProbM failed.");
     }
 
-    //load emitProbS
-    if (!getLine(ifile, line) || !loadEmitProb(line, emitProbS)) {
-      LogFatal("load emitProbS failed.");
+    //Load emitProbS
+    if (!GetLine(ifile, line) || !LoadEmitProb(line, emitProbS)) {
+      LogFatal("Load emitProbS failed.");
     }
   }
-  double getEmitProb(const EmitProbMap* ptMp, uint16_t key, 
+  double GetEmitProb(const EmitProbMap* ptMp, uint16_t key, 
         double defVal)const {
     EmitProbMap::const_iterator cit = ptMp->find(key);
     if (cit == ptMp->end()) {
@@ -92,7 +92,7 @@ struct HMMModel {
     }
     return cit->second;
   }
-  bool getLine(ifstream& ifile, string& line) {
+  bool GetLine(ifstream& ifile, string& line) {
     while (getline(ifile, line)) {
       trim(line);
       if (line.empty()) {
@@ -105,7 +105,7 @@ struct HMMModel {
     }
     return false;
   }
-  bool loadEmitProb(const string& line, EmitProbMap& mp) {
+  bool LoadEmitProb(const string& line, EmitProbMap& mp) {
     if (line.empty()) {
       return false;
     }
diff --git a/src/HMMSegment.hpp b/src/HMMSegment.hpp
index 839a610..aa9480f 100644
--- a/src/HMMSegment.hpp
+++ b/src/HMMSegment.hpp
@@ -23,7 +23,7 @@ class HMMSegment: public SegmentBase {
     }
   }
 
-  void cut(const string& sentence, 
+  void Cut(const string& sentence, 
         vector<string>& words) const {
     PreFilter pre_filter(symbols_, sentence);
     PreFilter::Range range;
@@ -31,11 +31,11 @@ class HMMSegment: public SegmentBase {
     uwords.reserve(sentence.size());
     while (pre_filter.HasNext()) {
       range = pre_filter.Next();
-      cut(range.begin, range.end, uwords);
+      Cut(range.begin, range.end, uwords);
     }
     TransCode::encode(uwords, words);
   }
-  void cut(Unicode::const_iterator begin, Unicode::const_iterator end, vector<Unicode>& res) const {
+  void Cut(Unicode::const_iterator begin, Unicode::const_iterator end, vector<Unicode>& res) const {
     Unicode::const_iterator left = begin;
     Unicode::const_iterator right = begin;
     while (right != end) {
@@ -132,7 +132,7 @@ class HMMSegment: public SegmentBase {
 
     //start
     for (size_t y = 0; y < Y; y++) {
-      weight[0 + y * X] = model_->startProb[y] + model_->getEmitProb(model_->emitProbVec[y], *begin, MIN_DOUBLE);
+      weight[0 + y * X] = model_->startProb[y] + model_->GetEmitProb(model_->emitProbVec[y], *begin, MIN_DOUBLE);
       path[0 + y * X] = -1;
     }
 
@@ -143,7 +143,7 @@ class HMMSegment: public SegmentBase {
         now = x + y*X;
         weight[now] = MIN_DOUBLE;
         path[now] = HMMModel::E; // warning
-        emitProb = model_->getEmitProb(model_->emitProbVec[y], *(begin+x), MIN_DOUBLE);
+        emitProb = model_->GetEmitProb(model_->emitProbVec[y], *(begin+x), MIN_DOUBLE);
         for (size_t preY = 0; preY < Y; preY++) {
           old = x - 1 + preY * X;
           tmp = weight[old] + model_->transProb[preY][y] + emitProb;
diff --git a/src/Jieba.hpp b/src/Jieba.hpp
index bbe88fc..724abb3 100644
--- a/src/Jieba.hpp
+++ b/src/Jieba.hpp
@@ -23,25 +23,25 @@ class Jieba {
   }
 
   void Cut(const string& sentence, vector<string>& words, bool hmm = true) const {
-    mix_seg_.cut(sentence, words, hmm);
+    mix_seg_.Cut(sentence, words, hmm);
   }
   void CutAll(const string& sentence, vector<string>& words) const {
-    full_seg_.cut(sentence, words);
+    full_seg_.Cut(sentence, words);
   }
   void CutForSearch(const string& sentence, vector<string>& words, bool hmm = true) const {
-    query_seg_.cut(sentence, words, hmm);
+    query_seg_.Cut(sentence, words, hmm);
   }
   void CutHMM(const string& sentence, vector<string>& words) const {
-    hmm_seg_.cut(sentence, words);
+    hmm_seg_.Cut(sentence, words);
   }
   void CutLevel(const string& sentence, vector<string>& words) const {
-    level_seg_.cut(sentence, words);
+    level_seg_.Cut(sentence, words);
   }
   void CutLevel(const string& sentence, vector<pair<string, size_t> >& words) const {
-    level_seg_.cut(sentence, words);
+    level_seg_.Cut(sentence, words);
   }
   void CutSmall(const string& sentence, vector<string>& words, size_t max_word_len) const {
-    mp_seg_.cut(sentence, words, max_word_len);
+    mp_seg_.Cut(sentence, words, max_word_len);
   }
   bool InsertUserWord(const string& word, const string& tag = UNKNOWN_TAG) {
     return dict_trie_.InsertUserWord(word, tag);
diff --git a/src/KeywordExtractor.hpp b/src/KeywordExtractor.hpp
index 6977fdd..79ec81b 100644
--- a/src/KeywordExtractor.hpp
+++ b/src/KeywordExtractor.hpp
@@ -44,7 +44,7 @@ class KeywordExtractor {
 
   bool extract(const string& sentence, vector<pair<string, double> >& keywords, size_t topN) const {
     vector<string> words;
-    segment_.cut(sentence, words);
+    segment_.Cut(sentence, words);
 
     map<string, double> wordmap;
     for (vector<string>::iterator iter = words.begin(); iter != words.end(); iter++) {
diff --git a/src/LevelSegment.hpp b/src/LevelSegment.hpp
index 0fc14dc..ceff9b8 100644
--- a/src/LevelSegment.hpp
+++ b/src/LevelSegment.hpp
@@ -18,14 +18,14 @@ class LevelSegment: public SegmentBase{
   ~LevelSegment() {
   }
 
-  void cut(Unicode::const_iterator begin,
+  void Cut(Unicode::const_iterator begin,
         Unicode::const_iterator end, 
         vector<pair<Unicode, size_t> >& res) const {
     res.clear();
     vector<Unicode> words;
     vector<Unicode> smallerWords;
     words.reserve(end - begin);
-    mpSeg_.cut(begin, end, words);
+    mpSeg_.Cut(begin, end, words);
     smallerWords.reserve(words.size());
     res.reserve(words.size());
 
@@ -35,7 +35,7 @@ class LevelSegment: public SegmentBase{
       for (size_t i = 0; i < words.size(); i++) {
         if (words[i].size() >= 3) {
           size_t len = words[i].size() - 1;
-          mpSeg_.cut(words[i].begin(), words[i].end(), smallerWords, len); // buffer.push_back without clear 
+          mpSeg_.Cut(words[i].begin(), words[i].end(), smallerWords, len); // buffer.push_back without clear 
         }
         if (words[i].size() > 1) {
           res.push_back(pair<Unicode, size_t>(words[i], level));
@@ -47,13 +47,13 @@ class LevelSegment: public SegmentBase{
     }
   }
 
-  void cut(const string& sentence, 
+  void Cut(const string& sentence, 
         vector<pair<string, size_t> >& words) const {
     words.clear();
     Unicode unicode;
     TransCode::decode(sentence, unicode);
     vector<pair<Unicode, size_t> > unicodeWords;
-    cut(unicode.begin(), unicode.end(), unicodeWords);
+    Cut(unicode.begin(), unicode.end(), unicodeWords);
     words.resize(unicodeWords.size());
     for (size_t i = 0; i < words.size(); i++) {
       TransCode::encode(unicodeWords[i].first, words[i].first);
@@ -61,10 +61,10 @@ class LevelSegment: public SegmentBase{
     }
   }
 
-  bool cut(const string& sentence, 
+  bool Cut(const string& sentence, 
         vector<string>& res) const {
     vector<pair<string, size_t> > words;
-    cut(sentence, words);
+    Cut(sentence, words);
     res.clear();
     res.reserve(words.size());
     for (size_t i = 0; i < words.size(); i++) {
diff --git a/src/MPSegment.hpp b/src/MPSegment.hpp
index f031fdc..449834a 100644
--- a/src/MPSegment.hpp
+++ b/src/MPSegment.hpp
@@ -27,7 +27,7 @@ class MPSegment: public SegmentBase {
     }
   }
 
-  void cut(const string& sentence, 
+  void Cut(const string& sentence, 
         vector<string>& words, 
         size_t max_word_len = MAX_WORD_LENGTH) const {
     PreFilter pre_filter(symbols_, sentence);
@@ -36,11 +36,11 @@ class MPSegment: public SegmentBase {
     uwords.reserve(sentence.size());
     while (pre_filter.HasNext()) {
       range = pre_filter.Next();
-      cut(range.begin, range.end, uwords, max_word_len);
+      Cut(range.begin, range.end, uwords, max_word_len);
     }
     TransCode::encode(uwords, words);
   }
-  void cut(Unicode::const_iterator begin,
+  void Cut(Unicode::const_iterator begin,
            Unicode::const_iterator end,
            vector<Unicode>& words,
            size_t max_word_len = MAX_WORD_LENGTH) const {
@@ -53,7 +53,7 @@ class MPSegment: public SegmentBase {
     CutByDag(dags, words);
   }
 
-  const DictTrie* getDictTrie() const {
+  const DictTrie* GetDictTrie() const {
     return dictTrie_;
   }
 
diff --git a/src/MixSegment.hpp b/src/MixSegment.hpp
index 5732654..5d38fe8 100644
--- a/src/MixSegment.hpp
+++ b/src/MixSegment.hpp
@@ -21,47 +21,47 @@ class MixSegment: public SegmentBase {
   ~MixSegment() {
   }
 
-  void cut(const string& sentence, vector<string>& words, bool hmm = true) const {
+  void Cut(const string& sentence, vector<string>& words, bool hmm = true) const {
     PreFilter pre_filter(symbols_, sentence);
     PreFilter::Range range;
     vector<Unicode> uwords;
     uwords.reserve(sentence.size());
     while (pre_filter.HasNext()) {
       range = pre_filter.Next();
-      cut(range.begin, range.end, uwords, hmm);
+      Cut(range.begin, range.end, uwords, hmm);
     }
     TransCode::encode(uwords, words);
   }
 
-  void cut(Unicode::const_iterator begin, Unicode::const_iterator end, vector<Unicode>& res, bool hmm) const {
+  void Cut(Unicode::const_iterator begin, Unicode::const_iterator end, vector<Unicode>& res, bool hmm) const {
     if (!hmm) {
-      mpSeg_.cut(begin, end, res);
+      mpSeg_.Cut(begin, end, res);
       return;
     }
     vector<Unicode> words;
     words.reserve(end - begin);
-    mpSeg_.cut(begin, end, words);
+    mpSeg_.Cut(begin, end, words);
 
     vector<Unicode> hmmRes;
     hmmRes.reserve(end - begin);
     Unicode piece;
     piece.reserve(end - begin);
     for (size_t i = 0, j = 0; i < words.size(); i++) {
-      //if mp get a word, it's ok, put it into result
+      //if mp Get a word, it's ok, put it into result
       if (1 != words[i].size() || (words[i].size() == 1 && mpSeg_.IsUserDictSingleChineseWord(words[i][0]))) {
         res.push_back(words[i]);
         continue;
       }
 
-      // if mp get a single one and it is not in userdict, collect it in sequence
+      // if mp Get a single one and it is not in userdict, collect it in sequence
       j = i;
       while (j < words.size() && 1 == words[j].size() && !mpSeg_.IsUserDictSingleChineseWord(words[j][0])) {
         piece.push_back(words[j][0]);
         j++;
       }
 
-      // cut the sequence with hmm
-      hmmSeg_.cut(piece.begin(), piece.end(), hmmRes);
+      // Cut the sequence with hmm
+      hmmSeg_.Cut(piece.begin(), piece.end(), hmmRes);
 
       //put hmm result to result
       for (size_t k = 0; k < hmmRes.size(); k++) {
@@ -77,8 +77,8 @@ class MixSegment: public SegmentBase {
     }
   }
 
-  const DictTrie* getDictTrie() const {
-    return mpSeg_.getDictTrie();
+  const DictTrie* GetDictTrie() const {
+    return mpSeg_.GetDictTrie();
   }
  private:
   MPSegment mpSeg_;
diff --git a/src/PosTagger.hpp b/src/PosTagger.hpp
index 8148a10..04c42fe 100644
--- a/src/PosTagger.hpp
+++ b/src/PosTagger.hpp
@@ -26,14 +26,14 @@ class PosTagger {
   }
 
   bool tag(const string& src, vector<pair<string, string> >& res) const {
-    vector<string> cutRes;
-    segment_.cut(src, cutRes);
+    vector<string> CutRes;
+    segment_.Cut(src, CutRes);
 
     const DictUnit *tmp = NULL;
     Unicode unico;
-    const DictTrie * dict = segment_.getDictTrie();
+    const DictTrie * dict = segment_.GetDictTrie();
     assert(dict != NULL);
-    for (vector<string>::iterator itr = cutRes.begin(); itr != cutRes.end(); ++itr) {
+    for (vector<string>::iterator itr = CutRes.begin(); itr != CutRes.end(); ++itr) {
       if (!TransCode::decode(*itr, unico)) {
         LogError("decode failed.");
         return false;
diff --git a/src/QuerySegment.hpp b/src/QuerySegment.hpp
index 7c95035..2248b1f 100644
--- a/src/QuerySegment.hpp
+++ b/src/QuerySegment.hpp
@@ -17,7 +17,7 @@ class QuerySegment: public SegmentBase {
  public:
   QuerySegment(const string& dict, const string& model, const string& userDict = "", size_t maxWordLen = 4)
     : mixSeg_(dict, model, userDict),
-      fullSeg_(mixSeg_.getDictTrie()),
+      fullSeg_(mixSeg_.GetDictTrie()),
       maxWordLen_(maxWordLen) {
     assert(maxWordLen_);
   }
@@ -26,27 +26,27 @@ class QuerySegment: public SegmentBase {
   }
   ~QuerySegment() {
   }
-  void cut(const string& sentence, vector<string>& words, bool hmm = true) const {
+  void Cut(const string& sentence, vector<string>& words, bool hmm = true) const {
     PreFilter pre_filter(symbols_, sentence);
     PreFilter::Range range;
     vector<Unicode> uwords;
     uwords.reserve(sentence.size());
     while (pre_filter.HasNext()) {
       range = pre_filter.Next();
-      cut(range.begin, range.end, uwords, hmm);
+      Cut(range.begin, range.end, uwords, hmm);
     }
     TransCode::encode(uwords, words);
   }
-  void cut(Unicode::const_iterator begin, Unicode::const_iterator end, vector<Unicode>& res, bool hmm) const {
-    //use mix cut first
+  void Cut(Unicode::const_iterator begin, Unicode::const_iterator end, vector<Unicode>& res, bool hmm) const {
+    //use mix Cut first
     vector<Unicode> mixRes;
-    mixSeg_.cut(begin, end, mixRes, hmm);
+    mixSeg_.Cut(begin, end, mixRes, hmm);
 
     vector<Unicode> fullRes;
     for (vector<Unicode>::const_iterator mixResItr = mixRes.begin(); mixResItr != mixRes.end(); mixResItr++) {
-      // if it's too long, cut with fullSeg_, put fullRes in res
+      // if it's too long, Cut with fullSeg_, put fullRes in res
       if (mixResItr->size() > maxWordLen_) {
-        fullSeg_.cut(mixResItr->begin(), mixResItr->end(), fullRes);
+        fullSeg_.Cut(mixResItr->begin(), mixResItr->end(), fullRes);
         for (vector<Unicode>::const_iterator fullResItr = fullRes.begin(); fullResItr != fullRes.end(); fullResItr++) {
           res.push_back(*fullResItr);
         }
diff --git a/src/Trie.hpp b/src/Trie.hpp
index 4fbaa11..8f1759a 100644
--- a/src/Trie.hpp
+++ b/src/Trie.hpp
@@ -117,7 +117,7 @@ class Trie {
     }
   }
 
-  void insertNode(const Unicode& key, const DictUnit* ptValue) {
+  void InsertNode(const Unicode& key, const DictUnit* ptValue) {
     if (key.begin() == key.end()) {
       return;
     }
@@ -150,7 +150,7 @@ class Trie {
     assert(keys.size() == valuePointers.size());
 
     for (size_t i = 0; i < keys.size(); i++) {
-      insertNode(keys[i], valuePointers[i]);
+      InsertNode(keys[i], valuePointers[i]);
     }
   }