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Bongdata
Bongdata
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xcvcxhuu
102 posts
May 22, 2026
7:58 AM
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Tim Hieu Chi So Ban Thang Ky Vong (xG) – Cong Cu Phan Tich Hien Dai Tren Bongdata
Trong ky nguyen bong da so hoa va bung no cua khoa hoc du lieu, cac chuyen gia va huan luyen vien hang dau the gioi khong con chi nhin vao so cu sut don thuan de danh gia hang cong. Ho su dung mot chi so tien tien va co do chinh xac cao hon rat nhieu mang ten "Ban thang ky vong" (Expected Goals - xG). De giup nguoi ham mo Viet Nam tiep can voi tieu chuan phan tich the gioi, kèo nhà cái Bongdata da tich hop chi so xG vao he thong thong ke nang cao cua minh.
Chi so xG la gi va tai sao no lai lam thay doi bong da?
Ban thang ky vong (xG) la mot chi so thong ke dung de do luong chat luong cua mot co hoi dut diem. Moi cu sut cua cau thu se duoc he thong may tinh gan cho mot gia tri xG nam trong khoang tu 0 den 1. Chi so nay duoc tinh toan dua tren hang van du lieu lich su tuong tu, phu thuoc vao cac yeu to: Khoang cach den khung thanh, goc sut, tu the dut diem (sut chan thuan, chan nghich hay danh dau), va vi tri cua cac hau ve doi phuong.
Vi du: Mot qua phat den (Penalty) luon co gia tri xG co dinh la 0.76 (nghia la co 76% co hoi chuyen hoa thanh ban thang). Trong khi do, mot cu sut xa tu khoang cach 30 met co the chi co gia tri xG la 0.02 (chi co 2% co hoi thanh ban). Neu mot doi bong sut toi 20 lan nhung tong xG chi dat 0.5, dieu do chung to cac pha dut diem cua ho deu o vi tri bat loi va co chat luong rat thap.
Cach ung dung chi so xG tren Bongdata de phan tich tran dau
Khi xem thong so ky thuat sau tran hoac truc tuyen tren Bongdata, chi so xG se giup ban boc tach ban chat tran dau mot cach sau sac:
Nhan dien su bat cong cua bang ty so: Co nhung tran dau ket thuc voi ty so hoa 0-0, nhung nhin vao Bongdata ban thay tong xG cua doi A len toi 3.5. Dieu nay phan anh doi A da choi cuc ky hay, tao ra hang loat co hoi ngon an nhung cac tien dao cua ho qua vo duyen hoac thu mon doi phuong da co mot ngay thi dau xuat than.
Danh gia dang cap thuc su cua cac tien dao: Bang cach so sanh so ban thang thuc te (Goals) va chi so xG cua mot cau thu tren Bongdata, ban se biet ai la sat thu vong cam thuc thu. Neu mot tien dao ghi duoc 10 ban thang tu muc xG chi la 5.0, anh ta la mot thien tai co kha nang chuyen hoa nhung co hoi khong ro rang thanh ban thang.
Du bao xu huong phong do trong tuong lai: Mot doi bong dang co chuoi tran thang lien tiep nhung chi so xG nhan ve moi tran deu rat thap chung to ho dang gap may man. Theo quy luat toan hoc, su may man nay se som ket thuc va doi bong do se som sa sut. Day la thong tin cuc ky dat gia cho cac cuoc thu.
Phan tich he thong phong ngu: Chi so xG cua doi phuong (xGA - Expected Goals Against) hien thi tren Bongdata phan anh nang luc cua hang thu. Doi bong co xGA thap chung to he thong phong ngu cua ho hoat dong rat tot, boc lot kin ke va khong cho doi thu co khong gian dut diem nguy hiem.
Nang tam tu duy xem bong da cung Bongdata
Hay xoa bo cach xem bong da truyen thong cam tinh va trang bi cho minh lang kinh khoa hoc cua cac chuyen gia. Bongdata tu hao mang den nhung cong cu cong nghe hien dai nhat, giup ban thau hieu sau sac tung milimet chien thuat tren san co.
Thong tin chi tiet: Dia Chi: 50 Nguyen Van Troi, Phuong 8, Quan Phu Nhuan, TP. Ho Chi Minh Hotline: 0702 731 948 Email: bongdata@gmail.com #bongdata #bongdataapp #kqbd #lichthidau
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