The vector-Space Model Assumptions: words are uncorrelated Given 1.n documents and a query TT 2. Query considered a document 1 012 too DD 2. Each represented by t terms 202122 3. Each term in document i has weight 4. We will deal with how to compute the weights later10 The Vector-Space Model ◼ Assumptions: words are uncorrelated T1 T2 …. Tt D1 d11 d12 … d1t D2 d21 d22 … d2t : : : : : : : : Dn dn1 dn2 … dnt Given: 1. N documents and a Query 2. Query considered a document too 2. Each represented by t terms 3. Each term j in document i has weight 4. We will deal with how to compute the weights later ij d Q q q qt ... 1 2