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   <subfield code="a">Đề tài “Hệ thống gợi ý nhạc dựa vào đặc trưng nhân khẩu học” được thực hiện trên tập dữ liệu của lastfm. Để đưa ra gợi ý, mô hình đề xuất sử dụng giải thuật phân cụm kmeans để gom nhóm những người dùng có cùng đặc trưng nhân khẩu học và phương pháp lọc cộng tác để đưa ra danh sách các bài hát gợi ý. Phân cụm kmeans được tiến hành với thông tin tuổi, giới tính, và quốc tịch của người dùng. Với người dùng trong cùng một cụm sẽ được tiến hành phương pháp lọc cộng tác nhằm gợi ý bài hát mới cho người dùng. Qua thực nghiệm trên tập dữ liệu cho thấy rằng với việc gom nhóm người dùng trước khi thực hiện phương pháp lọc cộng tác sẽ rút ngắn ½ thời gian để gợi ý bài hát cho người dùng. Với việc phân chia dữ liệu theo đặc điểm nhân khẩu học thành 56 nhóm, mô hình đề xuất giảm thời gian huấn luyện và đưa ra gợi ý vẫn đảm bảo độ chính xác không thay đổi nhiều so với không gom cụm. Qua đó thấy được nhân khẩu học có ảnh hưởng sở thích nghe nhạc của thính giả.</subfield>
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   <subfield code="a">Âm nhạc,Music</subfield>
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