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From Mining of Massive dataset book Exercise 3.9.3 : Suppose we have a string s of length 15, and we wish to index its prefix

From Mining of Massive dataset book

Exercise 3.9.3 : Suppose we have a string s of length 15, and we wish to index its prefix as in Section 3.9.4.

(a) How many positions are in the prefix if J = 0.85?

(b) How many positions are in the prefix if J = 0.95?

! (c) For what range of values of J will s be indexed under its first four symbols, but no more?

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