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Let's assume I have a collection of 10 documents,so |D| = 10 and a collection of relevant documents R , where |R| = 3 & R = {d1,d3,d8}. Then I make a query,q, to a random retrieval system and it returns this. Ans(S1,q) = < d1,d3,{d2,d5,d8},d4} Then d2,d5,d8 are in the same position.

Pos.       | Relevant
d1         | 1
d3         | 1
d2,d5,d8   | 1
d4         | 0

So R-Precision in the first 3 positions is R-Precision = 1, right? Or do I count them as:

Pos.       | Relevant
d1         | 1
d3         | 1
d2         | 1
d5         | 0
d8         | 0
d5         | 0
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