Ranking approach | \(P(i_j|q)\) |
---|---|
Description tags | \(\eta \times RD_{j,q}\) |
Meta tags | \(\eta \times RM_{j,q}\) |
Passage/full text | \(\eta \times RP_{j,q}\) |
Description + meta tags | \(\eta \times [1-(1-RD_{j,q}) \times (1-RM_{j,q})]\) |
Description + passage/full text | \(\eta \times [1-(1-RD_{j,q}) \times (1-RP_{j,q})]\) |
Passage/full text + meta tags | \(\eta \times [1-(1-RP_{j,q}) \times (1-RM_{j,q})]\) |
Description + meta tags + passage/full text | \(\eta \times [1-(1-RD_{j,q}) \times (1-RM_{j,q})\times (1-RP_{j,q})]\) |