Please, Give a detailed explanation

2. For an information retrieval system (e.g., search engine), if the tf-idf weight scheme notation is: Inc.Itc, based on the following information, calculate the ranking result of the documents (data from textbook chapter 6, Figures 6.8 and 6.9). Term Doct Doc2 Doc3 Term dft idft car 27 4 24 car 18,165 1.65 auto 3 33 0 auto 6723 2.08 insurance 0 33 29 insurance 19,241 1.62 best 14 0 17 best 25,235 1.5 2. For an information retrieval system (e.g., search engine), if the tf-idf weight scheme notation is: Inc.Itc, based on the following information, calculate the ranking result of the documents (data from textbook chapter 6, Figures 6.8 and 6.9). Term Doct Doc2 Doc3 Term dft idft car 27 4 24 car 18,165 1.65 auto 3 33 0 auto 6723 2.08 insurance 0 33 29 insurance 19,241 1.62 best 14 0 17 best 25,235 1.5