KwickClips Artificial Intelligence · 40 sec · free
Which k does the elbow suggest here?
Short answer. 2.
What else should you check?
Business needs.
Elbow method
| k | Spread |
|---|---|
| 1 | 5000 |
| 2 | 1200 |
| 3 | 900 |
Remember
| Pick k at the elbow |
| Check business needs |
Three clusters or four? Here is a simple test. Plot spread for each k. One gives five thousand. Two drops sharply to twelve hundred. Three drops little, so pick two. Pick k at the elbow. Check business needs.
This clip is from the full lesson: Clustering and the k-Means Algorithm — 7 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 11 Artificial Intelligence (843)
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