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API&#xff0c;\u652f\u6301\u6309\u9700\u751f\u6210\u4e2a\u6027\u5316\u63a8\u8350\u5217\u8868&#xff0c;\u5e76\u8fd4\u56de\u53ef\u89e3\u91ca\u7684\u6587\u672c\u8bf4\u660e&#xff0c;\u4f9b\u524d\u7aef\u6216\u7b2c\u4e09\u65b9\u7cfb\u7edf\u8c03\u7528\u3002\u524d\u7aef\u4ea4\u4e92\u754c\u9762\u6a21\u5757\u5b9e\u73b0\u591a\u6a21\u6001\u5c55\u793a&#xff0c;\u5305\u62ec\u6587\u5b57\u3001\u56fe\u7247\u3001\u5730\u56fe\u4e0e\u8bed\u97f3\u4ea4\u4e92&#xff0c;\u5e76\u63d0\u4f9b\u53ef\u89c6\u5316\u7684\u63a8\u8350\u7406\u7531\u4e0e\u8fc7\u6ee4\u5668&#xff0c;\u63d0\u5347\u7528\u6237\u4f53\u9a8c\u3002\u76d1\u63a7\u4e0e\u8bc4\u4f30\u6a21\u5757\u5b9e\u65f6\u6536\u96c6\u79bb\u7ebf\u6307\u6807&#xff08;\u51c6\u786e\u7387\u3001\u53ec\u56de\u7387\u3001NDCG&#xff09;\u4e0e\u5728\u7ebf\u6307\u6807&#xff08;\u70b9\u51fb\u7387\u3001\u505c\u7559\u65f6\u957f\u3001\u8f6c\u5316\u7387&#xff09;&#xff0c;\u652f\u6301A\/B\u6d4b\u8bd5\u4e0e\u6a21\u578b\u5728\u7ebf\u66f4\u65b0&#xff0c;\u4ee5\u6301\u7eed\u4f18\u5316\u63a8\u8350\u8d28\u91cf\u3002\u5b89\u5168\u4e0e\u9690\u79c1\u4fdd\u969c\u6a21\u5757\u91c7\u7528\u5dee\u5206\u9690\u79c1\u3001\u6570\u636e\u8131\u654f\u53ca\u8bbf\u95ee\u63a7\u5236\u6280\u672f&#xff0c;\u786e\u4fdd\u7528\u6237\u6570\u636e\u5728\u91c7\u96c6\u3001\u5b58\u50a8\u4e0e\u5904\u7406\u8fc7\u7a0b\u4e2d\u7684\u5b89\u5168\u5408\u89c4\u3002\u901a\u8fc7\u4e0a\u8ff0\u529f\u80fd\u6a21\u5757\u7684\u534f\u540c\u5de5\u4f5c&#xff0c;\u7cfb\u7edf\u80fd\u591f\u5b9e\u73b0\u9ad8\u6548\u3001\u7cbe\u51c6\u4e14\u53ef\u89e3\u91ca\u7684\u65c5\u6e38\u4e2a\u6027\u5316\u63a8\u8350\u670d\u52a1\u3002<\/p>\n<p>\u4e5d\u3001\u6570\u636e\u5e93\u8bbe\u8ba1<\/p>\n<p>\u5b57\u6bb5\u540d(\u82f1\u6587) | \u8bf4\u660e(\u4e2d\u6587) | \u5927\u5c0f | \u7c7b\u578b | \u4e3b\u5916\u952e | \u5907\u6ce8 \u00a0<br \/>\n&#8212;|&#8212;|&#8212;|&#8212;|&#8212;|&#8212; \u00a0<br \/>\nuser_id | \u7528\u6237\u552f\u4e00\u6807\u8bc6 | 36 | CHAR(36) | PK | \u00a0<br \/>\nusername | \u7528\u6237\u540d | 50 | VARCHAR(50) | \u00a0| \u00a0<br \/>\nemail | \u90ae\u7bb1\u5730\u5740 | 100 | VARCHAR(100) | \u00a0| \u00a0<br \/>\npassword_hash | \u5bc6\u7801\u54c8\u5e0c\u503c | 64 | CHAR(64) | \u00a0| \u00a0<br \/>\ncreated_at| \u6ce8\u518c\u65f6\u95f4|19|DATETIME| \u00a0<\/p>\n<p>user_profile_id|\u7528\u6237\u753b\u50cf\u552f\u4e00\u6807\u8bc6|36|CHAR(36)|PK| \u00a0<br \/>\nuser_id|\u6240\u5c5e\u7528\u6237ID|36|CHAR(36)|FK:Users.user_id| \u00a0<br \/>\ninterest_vector | \u5174\u8da3\u5411\u91cf&#xff08;JSON\u5b58\u50a8&#xff09; | 512 | TEXT | \u00a0| \u00a0<br \/>\nlast_updated | \u6700\u8fd1\u66f4\u65b0\u65f6\u95f4 |19|DATETIME|<\/p>\n<p>user_interaction_id|\u7528\u6237\u4ea4\u4e92\u552f\u4e00\u6807\u8bc6|36|CHAR(36)|PK| \u00a0<br \/>\nuser_id|\u6240\u5c5e\u7528\u6237ID|36|CHAR(36)|FK:Users.user_id| \u00a0<br \/>\ndestination_id|\u76f8\u5173\u666f\u70b9ID|36|CHAR(36)|FK:Destinations.destination_id| \u00a0<br \/>\ninteraction_type | \u4ea4\u4e92\u7c7b\u578b&#xff08;click, view, book&#xff09; |20 |VARCHAR(20)| | \u00a0<br \/>\ninteraction_time | \u4ea4\u4e92\u65f6\u95f4 |19|DATETIME|<\/p>\n<p>destination_id | \u666f\u70b9\u552f\u4e00\u6807\u8bc6 |36|CHAR(36)|PK| \u00a0<br \/>\nname | \u666f\u70b9\u540d\u79f0 |100|VARCHAR(100)| \u00a0<br \/>\ncategory | \u666f\u70b9\u7c7b\u522b&#xff08;\u6587\u5316\u3001\u81ea\u7136\u3001\u5a31\u4e50&#xff09;|30|VARCHAR(30)| \u00a0<br \/>\nlocation_latitude | \u7eac\u5ea6 |10|DECIMAL(9,6)| \u00a0<br \/>\nlocation_longitude | \u7ecf\u5ea6 |10|DECIMAL(9,6)| \u00a0<br \/>\ndescription | \u7b80\u77ed\u63cf\u8ff0 |500|TEXT|<\/p>\n<p>destination_image_id | \u56fe\u7247\u552f\u4e00\u6807\u8bc6 |36|CHAR(36)|PK| \u00a0<br \/>\ndestination_id | \u6240\u5c5e\u666f\u70b9ID |36|CHAR(36)|FK:Destinations.destination_id| \u00a0<br \/>\nimage_url | \u56fe\u7247URL |200|VARCHAR(200)| \u00a0<br \/>\ncaption | \u56fe\u7247\u8bf4\u660e |200|VARCHAR(200)| \u00a0<\/p>\n<p>destination_info_id | \u8be6\u7ec6\u4fe1\u606f\u552f\u4e00\u6807\u8bc6 |36|CHAR(36)|PK| \u00a0<br \/>\ndestination_id | \u6240\u5c5e\u666f\u70b9ID |36|CHAR(36)|FK:Destinations.destination_id| \u00a0<br \/>\nopening_hours | \u5f00\u653e\u65f6\u95f4 |100|VARCHAR(100)| \u00a0<br \/>\nticket_price | \u95e8\u7968\u4ef7\u683c&#xff08;\u5143&#xff09; |10|DECIMAL(10,2)| \u00a0<br \/>\nweather_advisory | \u5929\u6c14\u63d0\u793a |200|VARCHAR(200)| \u00a0<\/p>\n<p>itinerary_id | \u884c\u7a0b\u552f\u4e00\u6807\u8bc6 |36|CHAR(36)|PK| \u00a0<br \/>\nuser_id | \u5f52\u5c5e\u7528\u6237ID |36|CHAR(36)|FK:Users.user_id| \u00a0<br \/>\nstart_date | \u5f00\u59cb\u65e5\u671f |10|DATE| \u00a0<br \/>\nend_date | \u7ed3\u675f\u65e5\u671f |10|DATE|<\/p>\n<p>itinerary_item_id | \u884c\u7a0b\u9879\u552f\u4e00\u6807\u8bc6 |36|CHAR(36)|PK| \u00a0<br \/>\nitinerary_id | \u6240\u5c5e\u884c\u7a0bID |36|CHAR(36)|FK:Itineraries.itinerary_id| \u00a0<br \/>\ndestination_id | \u76ee\u7684\u5730ID |36|CHAR(36)|FK:Destinations.destination_id| \u00a0<br \/>\nvisit_time | \u8bbf\u95ee\u65f6\u95f4 |19|DATETIME|<\/p>\n<p>recommendation_log_id | \u63a8\u8350\u65e5\u5fd7\u552f\u4e00\u6807\u8bc6 |36|CHAR(36)|PK| \u00a0<br \/>\nuser_id | \u7528\u6237ID |36|CHAR(36)|FK:Users.user_id| \u00a0<br \/>\ndestination_id | \u63a8\u8350\u666f\u70b9ID |36|CHAR(36)|FK:Destinations.destination_id| \u00a0<br \/>\nscore | \u63a8\u8350\u5206\u6570 |5|FLOAT| \u00a0<br \/>\ngenerated_at | \u751f\u6210\u65f6\u95f4 |19|DATETIME|<\/p>\n<p>kg_entity_id | \u77e5\u8bc6\u56fe\u8c31\u5b9e\u4f53\u552f\u4e00\u6807\u8bc6 |36|CHAR(36)|PK| \u00a0<br \/>\nentity_name | \u5b9e\u4f53\u540d\u79f0 |100|VARCHAR(100)| \u00a0<br \/>\nentity_type | \u5b9e\u4f53\u7c7b\u578b&#xff08;\u666f\u70b9\u3001\u4e3b\u9898\u3001\u4ea4\u901a&#xff09;|30|VARCHAR(30)|<\/p>\n<p>kg_relation_id | \u77e5\u8bc6\u56fe\u8c31\u5173\u7cfb\u552f\u4e00\u6807\u8bc6 |36|CHAR(36)|PK| \u00a0<br \/>\nsource_entity_id | \u6e90\u5b9e\u4f53ID |36|CHAR(36)|FK:KG_Entities.kg_entity_id| \u00a0<br \/>\ntarget_entity_id | \u76ee\u6807\u5b9e\u4f53ID |36|CHAR(36)|FK:KG_Entities.kg_entity_id| \u00a0<br \/>\nrelation_type | \u5173\u7cfb\u7c7b\u578b&#xff08;\u4f4d\u4e8e\u3001\u5c5e\u4e8e\u3001\u5f00\u653e\u65f6\u95f4&#xff09;|30|VARCHAR(30)|<\/p>\n<p>\u4ee5\u4e0a\u8868\u7ed3\u6784\u9075\u5faa\u7b2c\u4e00\u8303\u5f0f\u4e0e\u7b2c\u4e8c\u8303\u5f0f&#xff0c;\u907f\u514d\u4e86\u6570\u636e\u5197\u4f59\u4e0e\u66f4\u65b0\u5f02\u5e38\u3002\u6240\u6709\u4e3b\u952e\u5747\u4e3aUUID\u5f62\u5f0f&#xff0c;\u5916\u952e\u901a\u8fc7\u663e\u5f0f\u7ea6\u675f\u4fdd\u8bc1\u53c2\u7167\u5b8c\u6574\u6027\u3002<\/p>\n<p>\u5341\u3001\u5efa\u8868\u8bed\u53e5<\/p>\n<p>CREATE DATABASE IF NOT EXISTS tourism_recommendation CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;<br \/>\nUSE tourism_recommendation;<\/p>\n<p>&#8212; \u7528\u6237\u57fa\u672c\u4fe1\u606f\u8868<br \/>\nCREATE TABLE IF NOT EXISTS users (<br \/>\n\u00a0 \u00a0 user_id CHAR(36) NOT NULL,<br \/>\n\u00a0 \u00a0 username VARCHAR(50) NOT NULL,<br \/>\n\u00a0 \u00a0 email VARCHAR(100) NOT NULL,<br \/>\n\u00a0 \u00a0 password_hash CHAR(64) NOT NULL,<br \/>\n\u00a0 \u00a0 created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,<br \/>\n\u00a0 \u00a0 PRIMARY KEY (user_id),<br \/>\n\u00a0 \u00a0 UNIQUE KEY uq_users_email (email),<br \/>\n\u00a0 \u00a0 UNIQUE KEY uq_users_username (username)<br \/>\n) ENGINE&#061;InnoDB DEFAULT CHARSET&#061;utf8mb4;<\/p>\n<p>&#8212; \u7528\u6237\u753b\u50cf\u8868<br \/>\nCREATE TABLE IF NOT EXISTS user_profiles (<br \/>\n\u00a0 \u00a0 user_profile_id CHAR(36) NOT NULL,<br \/>\n\u00a0 \u00a0 user_id CHAR(36) NOT NULL,<br \/>\n\u00a0 \u00a0 interest_vector TEXT NOT NULL,<br \/>\n\u00a0 \u00a0 last_updated DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,<br \/>\n\u00a0 \u00a0 PRIMARY KEY (user_profile_id),<br \/>\n\u00a0 \u00a0 UNIQUE KEY uq_user_profiles_user_id (user_id),<br \/>\n\u00a0 \u00a0 CONSTRAINT fk_user_profiles_user_id FOREIGN KEY (user_id) REFERENCES users(user_id) ON DELETE CASCADE ON UPDATE CASCADE<br \/>\n) ENGINE&#061;InnoDB DEFAULT CHARSET&#061;utf8mb4;<\/p>\n<p>&#8212; \u7528\u6237\u4ea4\u4e92\u8868<br \/>\nCREATE TABLE IF NOT EXISTS user_interactions (<br \/>\n\u00a0 \u00a0 user_interaction_id CHAR(36) NOT NULL,<br \/>\n\u00a0 \u00a0 user_id CHAR(36) NOT NULL,<br \/>\n\u00a0 \u00a0 destination_id CHAR(36) NOT NULL,<br \/>\n\u00a0 \u00a0 interaction_type VARCHAR(20) NOT NULL,<br \/>\n\u00a0 \u00a0 interaction_time DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,<br \/>\n\u00a0 \u00a0 PRIMARY KEY (user_interaction_id),<br \/>\n\u00a0 \u00a0 INDEX idx_user_interactions_user_id (user_id),<br \/>\n\u00a0 \u00a0 INDEX idx_user_interactions_destination_id (destination_id),<br \/>\n\u00a0 \u00a0 CONSTRAINT fk_user_interactions_user_id FOREIGN KEY (user_id) REFERENCES users(user_id) ON DELETE CASCADE ON UPDATE CASCADE,<br \/>\n\u00a0 \u00a0 CONSTRAINT fk_user_interactions_destination_id FOREIGN KEY (destination_id) REFERENCES destinations(destination_id) ON DELETE CASCADE ON UPDATE CASCADE<br \/>\n) ENGINE&#061;InnoDB DEFAULT CHARSET&#061;utf8mb4;<\/p>\n<p>&#8212; \u666f\u70b9\u57fa\u672c\u4fe1\u606f\u8868<br \/>\nCREATE TABLE IF NOT EXISTS destinations (<br \/>\n\u00a0 \u00a0 destination_id CHAR(36) NOT NULL,<br \/>\n\u00a0 \u00a0 name VARCHAR(100) NOT NULL,<br \/>\n\u00a0 \u00a0 category VARCHAR(30) NOT NULL,<br \/>\n\u00a0 \u00a0 location_latitude DECIMAL(9,6) NOT NULL,<br \/>\n\u00a0 \u00a0 location_longitude DECIMAL(9,6) NOT NULL,<br \/>\n\u00a0 \u00a0 description TEXT,<br \/>\n\u00a0 \u00a0 PRIMARY KEY (destination_id),<br \/>\n\u00a0 \u00a0 INDEX idx_destinations_name (name),<br \/>\n\u00a0 \u00a0 INDEX idx_destinations_category (category)<br \/>\n) ENGINE&#061;InnoDB DEFAULT CHARSET&#061;utf8mb4;<\/p>\n<p>&#8212; \u666f\u70b9\u56fe\u7247\u8868<br \/>\nCREATE TABLE IF NOT EXISTS destination_images (<br \/>\n\u00a0 \u00a0 destination_image_id CHAR(36) NOT NULL,<br \/>\n\u00a0 \u00a0 destination_id CHAR(36) NOT NULL,<br \/>\n\u00a0 \u00a0 image_url VARCHAR(200) NOT NULL,<br \/>\n\u00a0 \u00a0 caption VARCHAR(200),<br \/>\n\u00a0 \u00a0 PRIMARY KEY (destination_image_id),<br \/>\n\u00a0 \u00a0 INDEX idx_destination_images_destination_id (destination_id),<br \/>\n\u00a0 \u00a0 CONSTRAINT fk_destination_images_destination_id FOREIGN KEY (destination_id) REFERENCES destinations(destination_id) ON DELETE CASCADE ON UPDATE CASCADE<br \/>\n) ENGINE&#061;InnoDB DEFAULT CHARSET&#061;utf8mb4;<\/p>\n<p>&#8212; \u666f\u70b9\u8be6\u7ec6\u4fe1\u606f\u8868<br \/>\nCREATE TABLE IF NOT EXISTS destination_infos (<br \/>\n\u00a0 \u00a0 destination_info_id CHAR(36) NOT NULL,<br \/>\n\u00a0 \u00a0 destination_id CHAR(36) NOT NULL,<br \/>\n\u00a0 \u00a0 opening_hours VARCHAR(100),<br \/>\n\u00a0 \u00a0 ticket_price DECIMAL(10,2),<br \/>\n\u00a0 \u00a0 weather_advisory VARCHAR(200),<br \/>\n\u00a0 \u00a0 PRIMARY KEY (destination_info_id),<br \/>\n\u00a0 \u00a0 INDEX idx_destination_infos_destination_id (destination_id),<br \/>\n\u00a0 \u00a0 CONSTRAINT fk_destination_infos_destination_id FOREIGN KEY (destination_id) REFERENCES destinations(destination_id) ON DELETE CASCADE ON UPDATE CASCADE<br \/>\n) ENGINE&#061;InnoDB DEFAULT CHARSET&#061;utf8mb4;<\/p>\n<p>&#8212; \u884c\u7a0b\u8868<br \/>\nCREATE TABLE IF NOT EXISTS itineraries (<br \/>\n\u00a0 \u00a0 itinerary_id CHAR(36) NOT NULL,<br \/>\n\u00a0 \u00a0 user_id CHAR(36) NOT NULL,<br \/>\n\u00a0 \u00a0 start_date DATE NOT NULL,<br \/>\n\u00a0 \u00a0 end_date DATE NOT NULL,<br \/>\n\u00a0 \u00a0 PRIMARY KEY (itinerary_id),<br \/>\n\u00a0 \u00a0 INDEX idx_itineraries_user_id (user_id),<br \/>\n\u00a0 \u00a0 CONSTRAINT 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DELETE CASCADE ON UPDATE CASCADE<br \/>\n) ENGINE&#061;InnoDB DEFAULT CHARSET&#061;utf8mb4;<\/p>\n<p>&#8212; \u63a8\u8350\u65e5\u5fd7\u8868<br \/>\nCREATE TABLE IF NOT EXISTS recommendation_logs (<br \/>\n\u00a0 \u00a0 recommendation_log_id CHAR(36) NOT NULL,<br \/>\n\u00a0 \u00a0 user_id CHAR(36) NOT NULL,<br \/>\n\u00a0 \u00a0 destination_id CHAR(36) NOT NULL,<br \/>\n\u00a0 \u00a0 score FLOAT NOT NULL,<br \/>\n\u00a0 \u00a0 generated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,<br \/>\n\u00a0 \u00a0 PRIMARY KEY (recommendation_log_id),<br \/>\n\u00a0 \u00a0 INDEX idx_recommendation_logs_user_id (user_id),<br \/>\n\u00a0 \u00a0 INDEX idx_recommendation_logs_destination_id (destination_id),<br \/>\n\u00a0 \u00a0 CONSTRAINT fk_recommendation_logs_user_id FOREIGN KEY (user_id) REFERENCES users(user_id) ON DELETE CASCADE ON UPDATE CASCADE,<br \/>\n\u00a0 \u00a0 CONSTRAINT fk_recommendation_logs_destination_id FOREIGN KEY (destination_id) REFERENCES destinations(destination_id) ON 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