Computers and Technology, 13.02.2021 22:30, renegade2020
For the following vectors, x and y, calculate the indicated similarity or distance measures = (2, β1,0,2,0, β3), = (β1,1, β1,0,0, β1) cosine, correlation, Taxicab, Euclidean, and Supremum
Answers: 2
Computers and Technology, 23.06.2019 10:20, chonawilson4
Suppose there is a relation r(a, b, c) with a b+-tree index with search keys (a, b).1. what is the worst-case cost of finding records satisfying 10 < a < 50 using this index, in terms of the number of records n1, retrieved and the height h of the tree? 2. what is the worst-case cost of finding records satisfying 10 < a < 50 and 5 < b < 10 using this index, in terms of the number of records n2 that satisfy this selection, as well as n1 and h defined above? 3. under what conditions on n1 and n2, would the index be an efficient way of finding records satisfying the condition from part (2)?
Answers: 1
For the following vectors, x and y, calculate the indicated similarity or distance measures = (2, β1...
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