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Consider a ranked list of 5 documents for a search query. The relevance grades for each document are as follows: Relevance grades: 3 , 2

Consider a ranked list of 5 documents for a search query. The relevance grades for each document are as follows:
Relevance grades: 3,2,0,1,3
1. Calculate the Discounted Cumulative Gain (DCG) @ 3 for this ranked list.
2. Also, compute the Idealized DCG (IDCG) @ 3 assuming the perfect ranking of
documents.
3. Calculate the Normalized Discounted Cumulative Gain (NDCG) @ 1 and NDCG @ 3 for this scenario.

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