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Which of the following is a recommended way to initialize u; in k-means? Set μ E R to a random value between -e and e, for some small €. a. b. c. Od. Pick k distinct random integers i₁, ..., ik from {1,..., m}. Set μ₁ = x(i₁), µ₂ = x(¹₂), ..., µx = x(ix). Mk Pick k distinct random integers i₁, ..., ik from {1,..., k}. Set μ₁ = x(¹₁), μ₂ = x(¹₂),..., Mk = x(ik). Pick a random integer i from {1,..., k}. Set μ₁ = M₂ = ... = Mk = x(i).

Which of the following is a recommended way to initialize u; in k-means? Set μ E R to a random value between -e and e, for some small €. a. b. c. Od. Pick k distinct random integers i₁, ..., ik from {1,..., m}. Set μ₁ = x(i₁), µ₂ = x(¹₂), ..., µx = x(ix). Mk Pick k distinct random integers i₁, ..., ik from {1,..., k}. Set μ₁ = x(¹₁), μ₂ = x(¹₂),..., Mk = x(ik). Pick a random integer i from {1,..., k}. Set μ₁ = M₂ = ... = Mk = x(i).

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Which of the following is a recommended way to initialize µ; in k-means? Set μ¿ E R¹ to a random value between-e and e, for some small €. a. b. C. d. ·9 ... 9 Pick k distinct random integers i₁, ..., ik from {1, Set μ₁ = x(¹₁), µ₂ = x(²₂),..., Mk = x(ik). m}. Pick k distinct random integers i₁, ..., ik from {1, Set μ₁ = x(¹₁), µ₂ = x(¹₂),..., µk = . = Mk x( x(ik). Pick a random integer i from {1,..., k}. Set μ₁ = M₂ = = µk = x(¹), k}.
Transcribed Image Text:Which of the following is a recommended way to initialize µ; in k-means? Set μ¿ E R¹ to a random value between-e and e, for some small €. a. b. C. d. ·9 ... 9 Pick k distinct random integers i₁, ..., ik from {1, Set μ₁ = x(¹₁), µ₂ = x(²₂),..., Mk = x(ik). m}. Pick k distinct random integers i₁, ..., ik from {1, Set μ₁ = x(¹₁), µ₂ = x(¹₂),..., µk = . = Mk x( x(ik). Pick a random integer i from {1,..., k}. Set μ₁ = M₂ = = µk = x(¹), k}.
Suppose we have run k-means with k = 5 and k = 10 We find that the cost function value is much larger for k= 10 than k 5. What is the reason? a There must be a bug in the code. b. In the run with k = 10 k-means got stuck in a bad local minimum. We should consider re-running k-means with multiple random initializations. c. The ideal number of clusters is k = 5 d. In the run with k = 5 k-means got lucky. We should consider re-running k-means with k 5 and different random initializations until it performs worse than with k = 10
Transcribed Image Text:Suppose we have run k-means with k = 5 and k = 10 We find that the cost function value is much larger for k= 10 than k 5. What is the reason? a There must be a bug in the code. b. In the run with k = 10 k-means got stuck in a bad local minimum. We should consider re-running k-means with multiple random initializations. c. The ideal number of clusters is k = 5 d. In the run with k = 5 k-means got lucky. We should consider re-running k-means with k 5 and different random initializations until it performs worse than with k = 10
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