5. Consider the following table of relevant items in ranked order where zero mea
ID: 657469 • Letter: 5
Question
5. Consider the following table of relevant items in ranked order where zero means it was on the hit list but not relevant. NV = not viewed which means it was on hit ist and relevant or not if it has value of zero but not looked at by the user. It also has all the relevant documents from the database in the first 10 hits.
D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
Query 1 0 0 (NV) 3 0 2 2 5 0 0 4
Query 2 4 0 3 (NV) 0 2 0 4 0 1 2
d. For Query 1 calculate the DCG and Normalized DCG at 10 items.
Use the formula: DCG = rel1 + ?????????2i/log2 (i)
Log(2) = 1
Log(3) = 1.58
Log(4) = 2
Log(5) = 2.32
Log(6) = 2.58
Log(7) = 2.80
Log(8) = 3
Log(9) = 3.17
Log(10) = 3.32
Explanation / Answer
5. Consider the following table of relevant items in ranked order where zero mea
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