精排序

requirements.txt

@@ -3,6 +3,8 @@ DBUtils
 pandas
 numpy
 openpyxl
+xgboost
+requests
 
 tornado==6.2
 

src/core/recommender.py

@@ -26,17 +26,6 @@ from ydl_ai_recommender.src.utils.log import create_logger
 logger = create_logger(__name__, 'recommender.log', is_rotating=True)
 
 
-def cost_time(desc):
-    def the_func_cost_time(func):
-        def fun(*args,**kwargs):
-            t = time.perf_counter()
-            result = func(*args, **kwargs)
-            logger.info('函数:{},{} 耗时:{} ms'.format(str(func.__name__), desc, round((time.perf_counter()-t)*1000, 2)))
-            return result
-        return fun
-    return the_func_cost_time
-
-
 class Recommender:
 
     def __init__(self) -> None:
@@ -256,163 +245,8 @@ class ItemCFRecommender(Recommender):
             counselors = counselors[:size]
         return counselors
 
-
-class RecommendByXgboost(Recommender):
-    def __init__(self, top_n=5, k=20, is_use_db=True, u2c='combination', c2c=None) -> None:
-        super().__init__()
-
-        config = configparser.RawConfigParser()
-        config.read(get_conf_path())
-        self.dmp_url = config.get('DMP', 'url')
-
-        select_items = ['uid', 'ffrom_login', 'user_login_city', 'user_preference_cate']
-        self.select_fields = {k: True for k in select_items}
-        self.user_encoder_convert = read_user_encoder_dict()
-
-        self.all_counselors = read_counselors()
-
-        #self.recommender = UserCFRecommender(top_n=top_n, k=k, u2c=u2c)
-        self.params = {'n_estimators': 150, 'max_depth': 7, 'min_child_weight': 5, 'gamma': 0, 'subsample': 0.9,
-                       'colsample_bytree': 0.5, 'reg_alpha': 0, 'reg_lambda': 1, 'learning_rate': 0.1,
-                       'max_delta_step': 0,
-                       'scale_pos_weight': 1}
-        self.model = xgb.XGBClassifier(objective='binary:logistic', nthread=-1, **self.params)
-        self.model.load_model(os.path.join(get_project_path(), 'model_data/xgb_model.bin'))
-
-    @cost_time(desc='召回咨询师')
-    def recall_data(self, user_id, size=0, is_merge=True):
-        return self.recommender.recommend(user_id, size=size, is_merge=True)
-
-    @cost_time(desc='模型推荐整个流程')
-    def recommend(self, user_id, size=0, is_merge=True):
-        user_profile = self.get_user_profile(user_id)
-        if not user_profile:
-            return self._recommend_top(size)
-
-        # recommend_result = self.recall_data(user_id, size=size, is_merge=True)
-        recommend_result = None
-        data_time = time.time()
-        predit_data = self.trans_feature_data(user_id, user_profile, recommend_result)
-        doctor_ids = predit_data.pop('doctor_id')
-        doctor_ids = doctor_ids.to_numpy()
-
-        pre_time = time.time()
-        predit_result = self.model.predict_proba(predit_data)[:, 1]
-        self.logger.info('predit_time:{}ms'.format(int((time.time()-pre_time)*1000)))
-        result_dict = dict(zip(doctor_ids, predit_result))
-        result_dict = sorted(result_dict.items(), key=lambda x:x[1], reverse=True)
-        recommend_data = [{
-            'counselor': c_id,
-            'score': round(float(proba), 4),
-            'from': 'similar_users {}'.format(user_id),
-        } for (c_id, proba) in result_dict[0:50]]
-        return recommend_data
-
-    @cost_time(desc='')
-    def trans_feature_data(self, user_id, user_profile, counselor_data):
-        user_feature_data = self.trans_user_feature_data(user_id, user_profile)
-        counselor_feature_data = self.trans_counselor_feature_data(counselor_data)
-        counselor_num = len(counselor_feature_data)
-
-        user_feature_data_dataframe = pd.DataFrame([user_feature_data]*counselor_num, columns=['ffrom_login_encoder'\
-            , 'user_login_city_encoder', 'cate_id_1_encoder', 'cate_id_2_encoder', 'cate_id_3_encoder'\
-            , 'cate_id_4_encoder', 'cate_id_5_encoder'])
-
-        predit_feature_data = pd.concat([user_feature_data_dataframe, counselor_feature_data], axis=1)
-        return predit_feature_data
-
-    def trans_user_feature_data(self, user_id, user_profile):
-        if not user_profile:
-            user_profile = self.get_user_profile(user_id)
-        from_login_encoder = self.get_encoder_from_dict('ffrom_login', user_profile['ffrom_login'])
-        user_login_city_encoder = self.get_encoder_from_dict('user_login_city', user_profile['user_login_city'])
-
-        user_preference_cate = user_profile['user_preference_cate']
-        user_preference_cate_top_5_encoder = self.process_user_preference_cate(user_preference_cate)
-
-        user_feature_data = [from_login_encoder, user_login_city_encoder]
-        user_feature_data.extend(user_preference_cate_top_5_encoder)
-
-        return user_feature_data
-
-    def trans_counselor_feature_data(self, counselor_data):
-        # counselor_ids = [str(item['counselor']) for item in counselor_data]
-        # counselor_profiles = self.all_counselors[self.all_counselors['doctor_id'].isin(counselor_ids)].reset_index(drop=True)
-        # return counselor_profiles
-        return self.all_counselors
-
-    @cost_time(desc='获取用户画像')
-    def get_user_profile(self, user_id):
-        if user_id == '0':
-            return []
-
-        headers = {
-            'X-App-Id': 'plough_cloud',
-            'Content-Type': 'application/json'
-        }
-
-        payload = {
-            "filter": {
-                "uid": user_id,
-            },
-            "fields": self.select_fields,
-            "limit": 10
-        }
-
-        try:
-            get_profile_time = time.time()
-            response = requests.request('POST', self.dmp_url, headers=headers, json=payload)
-            resp = response.json()
-            return resp['data']['objects'][0]
-        except Exception as e:
-            self.logger.error('获取用户画像数据失败: %s', e, exc_info=True)
-            try:
-                self.logger.exception('response json data %s', resp)
-            except:
-                pass
-            return []
-
-    def process_user_preference_cate(self, preference_cate):
-        result = [0, 0, 0, 0, 0]
-        ids = []
-        if isinstance(preference_cate, str):
-            pref_data = json.loads(preference_cate)
-            for info in pref_data:
-                ids.append(info['cate_id'])
-            ids = ids[0:min(5, len(ids))]
-        for ind, val in enumerate(ids):
-            result[ind] = val
-        encoder_result = []
-        for ind, val in enumerate(result):
-            value_convert_dict = self.user_encoder_convert.get('cate_id_{}_encoder'.format(ind+1))
-            if value_convert_dict is not None:
-                encoder_result.append(value_convert_dict.get(val, 0))
-        if len(encoder_result)<5:
-            encoder_result.extend([0]*(5-len(encoder_result)))
-        return encoder_result
-
-    def get_encoder_from_dict(self, feature_name, feature_value):
-        value_convert_dict = self.user_encoder_convert.get('{}_encoder'.format(feature_name))
-        if value_convert_dict is None:
-            return 0
-        return value_convert_dict.get(str(feature_value), 0)
-
-
 if __name__ == '__main__':
-    # s_time = time.time()
-    # recommender1 = UserCFRecommender()
-    # recommender1.recommend('30004410')
-    # print('all cost time: {}'.format(time.time() - s_time), recommender1.recommend('12047'))
-
-    print()
-    print()
     s_time = time.time()
-    recommender = RecommendByXgboost()
-    recommender.recommend('3251227')
-    print('all cost time: '.format(time.time()-s_time), recommender.recommend('12047'))
-
-    # print()
-    # print()
-    # s_time = time.time()
-    # recommender.recommend('37298')
-    # print('all cost time: '.format(time.time() - s_time), recommender.recommend('12047'))
+    recommender1 = UserCFRecommender()
+    recommender1.recommend('30004410')
+    print('all cost time: {}'.format(time.time() - s_time), recommender1.recommend('12047'))
\ No newline at end of file

src/service/rank_service.py

@@ -11,11 +11,12 @@ from tornado.concurrent import run_on_executor
 
 from ydl_ai_recommender.src.utils.log import create_logger
 from ydl_ai_recommender.src.core.rank.ranker import Ranker
+from ydl_ai_recommender.src.core.rank.ranker import RankByXGB
 
 
 logger = create_logger(__name__, 'rank_service.log', is_rotating=True)
 ranker = Ranker()
-
+rankByXgb = RankByXGB()
 
 class RankHandler(tornado.web.RequestHandler):
     executor = ThreadPoolExecutor(1)
@@ -69,12 +70,64 @@ class RankHandler(tornado.web.RequestHandler):
         return ret
 
 
-if __name__ == '__main__':
+class RankByXgboostHandler(tornado.web.RequestHandler):
+    executor = ThreadPoolExecutor(1)
+
+    @tornado.gen.coroutine
+    def get(self):
+        uid = self.get_argument('uid', None)
+        if uid is None:
+            logger.warn('请求参数不正确，无uid')
+
+        counselors = self.get_argument('counselors', '')
+
+        ret = yield self.run(uid, counselors)
+        self.write(ret)
+
+
+    @tornado.gen.coroutine
+    def post(self):
+        param = json.loads(self.request.body.decode('utf-8'))
+        uid = param.get('uid', None)
+        counselors = param.get('counselors', '')
+        if uid is None:
+            logger.warn('请求参数不正确，无uid')
+
+        ret = yield self.run(uid, counselors)
+        self.write(ret)
 
-    tornado.options.define('port', default=8868, type=int, help='服务启动的端口号')
 
+    @run_on_executor
+    def run(self, uid, counselors=''):
+        logger.info('request@@uid=%s@@counselors=%s', uid, counselors)
+        try:
+            rank_result = rankByXgb.rank(uid, counselors)
+            ret = {
+                'status': 'success',
+                'code': 0,
+                'data': rank_result,
+                'total_count': len(rank_result),
+            }
+        except Exception as e:
+            logger.error('执行精排报错', exc_info=True)
+            ret = {
+                'status': 'error',
+                'code': 1,
+                'data': [],
+                'total_count': 0,
+            }
+
+        ret_str = json.dumps(ret, ensure_ascii=False)
+        logger.info('response@@uid=%s@@counselors=%s@@ret=%s', uid, counselors, ret_str)
+        return ret
+
+
+if __name__ == '__main__':
+    tornado.options.define('port', default=8868, type=int, help='服务启动的端口号')
     tornado.options.parse_command_line()
-    app = tornado.web.Application(handlers=[(r'/ai_counselor_rank', RankHandler)], autoreload=False, debug=False)
+    app = tornado.web.Application(handlers=[(r'/ai_counselor_rank', RankHandler),
+                                            (r'/ai_counselor_rank/xgb/v1', RankByXgboostHandler)],
+                                  autoreload=False, debug=False)
     http_server = tornado.httpserver.HTTPServer(app)
     http_server.listen(tornado.options.options.port)
     tornado.ioloop.IOLoop.instance().start()

src/service/recommend_service.py

@@ -138,9 +138,8 @@ if __name__ == '__main__':
     tornado.options.define('port', default=8868, type=int, help='服务启动的端口号')
 
     tornado.options.parse_command_line()
-    app = tornado.web.Application(handlers=[(r'/ai_counselor_recommend', RecommendHandler),
-                                            (r'/ai_counselor_recommend/xgb/v1', RecommendXgbHandler)]
-                                  , autoreload=True, debug=False)
+    app = tornado.web.Application(handlers=[(r'/ai_counselor_recommend', RecommendHandler), ]
+                                  , autoreload=False, debug=False)
     http_server = tornado.httpserver.HTTPServer(app)
     http_server.listen(tornado.options.options.port)
     tornado.ioloop.IOLoop.instance().start()