Suppose you have run k-means using k=2 and k=5. You find that the cost function J is much higher for k=5 than k=2. What can you conclude? O a. In the run with k=5, k-means got stuck in a bad local minimum. You should try re-running k-means with multiple random initializations. O b. The ideal number of clusters is k=2. O c. In the run with k=2, k-means got lucky. You should try re-running k-means with k=2 and different random initializations until it performs no better than with k=5. O d. This is mathematically impossible. There must be a bug in the code.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
icon
Related questions
Question
Suppose you have run k-means using k=2 and k=5. You find that the cost function J is
much higher for k=5 than k=2. What can you conclude?
a. In the run with k=5, k-means got stuck in a bad local minimum. You should try
re-running k-means with multiple random initializations.
O b. The ideal number of clusters is k=2.
O c. In the run with k=2, k-means got lucky. You should try re-running k-means with k=2
and different random initializations until it performs no better than with k=5.
O d. This is mathematically impossible. There must be a bug in the code.
Transcribed Image Text:Suppose you have run k-means using k=2 and k=5. You find that the cost function J is much higher for k=5 than k=2. What can you conclude? a. In the run with k=5, k-means got stuck in a bad local minimum. You should try re-running k-means with multiple random initializations. O b. The ideal number of clusters is k=2. O c. In the run with k=2, k-means got lucky. You should try re-running k-means with k=2 and different random initializations until it performs no better than with k=5. O d. This is mathematically impossible. There must be a bug in the code.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 1 images

Blurred answer
Knowledge Booster
Bellman operator
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Database System Concepts
Database System Concepts
Computer Science
ISBN:
9780078022159
Author:
Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:
McGraw-Hill Education
Starting Out with Python (4th Edition)
Starting Out with Python (4th Edition)
Computer Science
ISBN:
9780134444321
Author:
Tony Gaddis
Publisher:
PEARSON
Digital Fundamentals (11th Edition)
Digital Fundamentals (11th Edition)
Computer Science
ISBN:
9780132737968
Author:
Thomas L. Floyd
Publisher:
PEARSON
C How to Program (8th Edition)
C How to Program (8th Edition)
Computer Science
ISBN:
9780133976892
Author:
Paul J. Deitel, Harvey Deitel
Publisher:
PEARSON
Database Systems: Design, Implementation, & Manag…
Database Systems: Design, Implementation, & Manag…
Computer Science
ISBN:
9781337627900
Author:
Carlos Coronel, Steven Morris
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Computer Science
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education