internal static List <Tin> LocTinTuc(SinhVien sv)
        {
            List <Tin> kq = new List <Tin>();

            foreach (Tin baiviet in BaiVietMoi)
            {
                if (NewsRecommenderSystem.IsAppropriate(sv, baiviet))
                {
                    kq.Add(baiviet);
                }
            }
            return(kq);
        }
 private static bool CanThongBao(SinhVien sv, Tin tinMoi)
 {
     return(NewsRecommenderSystem.IsAppropriate(sv, tinMoi));
 }