create keyword_extract in Jieba

ChangeLog.md

@@ -1,5 +1,9 @@
 # CppJieba ChangeLog
 
+## next version
+
++ Notice(**api changed**) : Jieba class 3 arguments -> 5 arguments, and use KeywordExtractor in Jieba
+
 ## v4.8.1
 
 + add TextRankExtractor by [@questionfish] in [pull request 65](https://github.com/yanyiwu/cppjieba/pull/65)

include/cppjieba/Jieba.hpp

@@ -2,22 +2,25 @@
 #define CPPJIEAB_JIEBA_H
 
 #include "QuerySegment.hpp"
-//#include "LevelSegment.hpp"
+#include "KeywordExtractor.hpp"
 
 namespace cppjieba {
 
 class Jieba {
  public:
-  Jieba(const string& dict_path, const string& model_path, const string& user_dict_path) 
+  Jieba(const string& dict_path, 
+        const string& model_path,
+        const string& user_dict_path, 
+        const string& idfPath, 
+        const string& stopWordPath) 
     : dict_trie_(dict_path, user_dict_path),
       model_(model_path),
       mp_seg_(&dict_trie_),
       hmm_seg_(&model_),
       mix_seg_(&dict_trie_, &model_),
       full_seg_(&dict_trie_),
-      query_seg_(&dict_trie_, &model_)
+      query_seg_(&dict_trie_, &model_),
-      //level_seg_(&dict_trie_),
+      extractor(&dict_trie_, &model_, idfPath, stopWordPath) {
-      {
   }
   ~Jieba() {
   }
@@ -84,7 +87,7 @@ class Jieba {
   const HMMModel* GetHMMModel() const {
     return &model_;
   }
- 
+
  private:
   DictTrie dict_trie_;
   HMMModel model_;
@@ -95,8 +98,9 @@ class Jieba {
   MixSegment mix_seg_;
   FullSegment full_seg_;
   QuerySegment query_seg_;
-  //LevelSegment level_seg_;
 
+ public:
+  KeywordExtractor extractor;
 }; // class Jieba
 
 } // namespace cppjieba

include/cppjieba/KeywordExtractor.hpp

@@ -3,10 +3,12 @@
 
 #include <cmath>
 #include <set>
-#include "Jieba.hpp"
+#include "MixSegment.hpp"
 
 namespace cppjieba {
+
 using namespace limonp;
+using namespace std;
 
 /*utf8*/
 class KeywordExtractor {
@@ -34,13 +36,6 @@ class KeywordExtractor {
     LoadIdfDict(idfPath);
     LoadStopWordDict(stopWordPath);
   }
-  KeywordExtractor(const Jieba& jieba, 
-        const string& idfPath, 
-        const string& stopWordPath) 
-    : segment_(jieba.GetDictTrie(), jieba.GetHMMModel()) {
-    LoadIdfDict(idfPath);
-    LoadStopWordDict(stopWordPath);
-  }
   ~KeywordExtractor() {
   }
 

test/demo.cpp

@@ -1,5 +1,4 @@
 #include "cppjieba/Jieba.hpp"
-#include "cppjieba/KeywordExtractor.hpp"
 
 using namespace std;
 
@@ -12,7 +11,9 @@ const char* const STOP_WORD_PATH = "../dict/stop_words.utf8";
 int main(int argc, char** argv) {
   cppjieba::Jieba jieba(DICT_PATH,
         HMM_PATH,
-        USER_DICT_PATH);
+        USER_DICT_PATH,
+        IDF_PATH,
+        STOP_WORD_PATH);
   vector<string> words;
   vector<cppjieba::Word> jiebawords;
   string s;
@@ -69,13 +70,10 @@ int main(int argc, char** argv) {
   cout << s << endl;
   cout << tagres << endl;;
 
-  cppjieba::KeywordExtractor extractor(jieba,
-        IDF_PATH,
-        STOP_WORD_PATH);
   cout << "[demo] Keyword Extraction" << endl;
   const size_t topk = 5;
   vector<cppjieba::KeywordExtractor::Word> keywordres;
-  extractor.Extract(s, keywordres, topk);
+  jieba.extractor.Extract(s, keywordres, topk);
   cout << s << endl;
   cout << keywordres << endl;
   return EXIT_SUCCESS;

test/unittest/jieba_test.cpp

@@ -5,8 +5,10 @@ using namespace cppjieba;
 
 TEST(JiebaTest, Test1) {
   cppjieba::Jieba jieba("../dict/jieba.dict.utf8",
-                            "../dict/hmm_model.utf8",
+                        "../dict/hmm_model.utf8",
-                            "../dict/user.dict.utf8");
+                        "../dict/user.dict.utf8",
+                        "../dict/idf.utf8",
+                        "../dict/stop_words.utf8");
   vector<string> words;
   string result;
 
@@ -40,8 +42,10 @@ TEST(JiebaTest, Test1) {
 }
 TEST(JiebaTest, WordTest) {
   cppjieba::Jieba jieba("../dict/jieba.dict.utf8",
-                            "../dict/hmm_model.utf8",
+                        "../dict/hmm_model.utf8",
-                            "../dict/user.dict.utf8");
+                        "../dict/user.dict.utf8",
+                        "../dict/idf.utf8",
+                        "../dict/stop_words.utf8");
   vector<Word> words;
   string result;
 
@@ -80,8 +84,10 @@ TEST(JiebaTest, WordTest) {
 
 TEST(JiebaTest, InsertUserWord) {
   cppjieba::Jieba jieba("../dict/jieba.dict.utf8",
-                            "../dict/hmm_model.utf8",
+                        "../dict/hmm_model.utf8",
-                            "../dict/user.dict.utf8");
+                        "../dict/user.dict.utf8",
+                        "../dict/idf.utf8",
+                        "../dict/stop_words.utf8");
   vector<string> words;
   string result;
 
@@ -114,4 +120,14 @@ TEST(JiebaTest, InsertUserWord) {
   jieba.Cut("同一个世界，同一个梦想", words);
   result = Join(words.begin(), words.end(), "/");
   ASSERT_EQ(result, "同一个世界，同一个梦想");
+
+  {
+    string s("一部iPhone6");
+    string res;
+    vector<KeywordExtractor::Word> wordweights;
+    size_t topN = 5;
+    jieba.extractor.Extract(s, wordweights, topN);
+    res << wordweights;
+    ASSERT_EQ(res, "[{\"word\": \"iPhone6\", \"offset\": [6], \"weight\": 11.7392}, {\"word\": \"\xE4\xB8\x80\xE9\x83\xA8\", \"offset\": [0], \"weight\": 6.47592}]");
+  }
 }