Identitas Mahasiswa
NIM: 2302050826
Nama: Vicky Dawud N
Prodi: Sistem Informasi
Kelas: SI-A
Data Rating Pengguna
| User | Interstellar | Inception | Titanic | Avatar | Matrix |
|---|---|---|---|---|---|
| U1 | 5 | 5 | 3 | 4 | 4 |
| U2 | 4 | 4 | 5 | 3 | 0 |
| U3 | 5 | 4 | 2 | 3 | 4 |
| U4 | 0 | 0 | 4 | 5 | 2 |
| U5 | 3 | 3 | 4 | 4 | 4 |
| U6 | 4 | 5 | 0 | 2 | 3 |
| U7 | 2 | 3 | 5 | 5 | 4 |
| U8 | 5 | 5 | 2 | 1 | 0 |
| U9 | 4 | 4 | 4 | 2 | 1 |
| U10 | 3 | 2 | 5 | 0 | 1 |
| U11 | 1 | 1 | 5 | 5 | 1 |
| U12 | 5 | 5 | 0 | 0 | 5 |
| U13 | 4 | 4 | 4 | 3 | 3 |
| U14 | 0 | 0 | 3 | 5 | 1 |
| U15 | 3 | 2 | 2 | 2 | 2 |
| U16 | 5 | 5 | 5 | 4 | 4 |
| U17 | 4 | 5 | 1 | 2 | 5 |
| U18 | 2 | 2 | 4 | 4 | 1 |
| U19 | 3 | 3 | 5 | 5 | 2 |
| U20 | 5 | 4 | 1 | 1 | 4 |
Langkah 3: Hitung Prediksi Rating
Gunakan rumus Item-Based Collaborative Filtering:
r̂ = (0.715 × 4) + (0.707 × 3) + (0.905 × 2) + (0.643 × 5)
————————————————————————————————
0.715 + 0.707 + 0.905 + 0.643
r̂ = 2.86 + 2.121 + 1.81 + 3.215 / 2.97
r̂ = 10.006 / 2.97 ≈ 3.41
Langkah 4: Interpretasi Hasil
Hasil prediksi rating untuk U6 terhadap Titanic adalah 3.41
Dibulatkan menjadi: 3
Kategori: Buruk