# How do you explain K-means?

## How do you explain K-means?

K-means clustering aims to partition data into k clusters in a way that data points in the same cluster are similar and data points in the different clusters are farther apart. It is calculated using the square of the difference between x and y coordinates of the points.

### What is K-means algorithm explain with example?

K-Means Clustering is an Unsupervised Learning algorithm, which groups the unlabeled dataset into different clusters. Here K defines the number of pre-defined clusters that need to be created in the process, as if K=2, there will be two clusters, and for K=3, there will be three clusters, and so on.

#### What does the letter K in k-means clustering stand for?

4.2 The Algorithm The letter k has different meanings in the two methods (kNN and K-means): in the kNN method the k stands for the number of nearest neigbours with which the object to be classified is compared, and in K-means, k signifies the number of clusters (groups) that we want to form.

Is k-means supervised or unsupervised?

K-Means clustering is an unsupervised learning algorithm. There is no labeled data for this clustering, unlike in supervised learning. K-Means performs the division of objects into clusters that share similarities and are dissimilar to the objects belonging to another cluster.

What is k-means in machine learning?

k-means is a technique for data clustering that may be used for unsupervised machine learning. It is capable of classifying unlabeled data into a predetermined number of clusters based on similarities (k).

## What does K stands for in K nearest neighbors classification?

It takes a bunch of unlabeled points and tries to group them into “k” number of clusters. It is unsupervised because the points have no external classification. The “k” in k-means denotes the number of clusters you want to have in the end.

### How is k-means performance measured?

You can evaluate the performance of k-means by convergence rate and by the sum of squared error(SSE), making the comparison among SSE. It is similar to sums of inertia moments of clusters.

#### Why does “K” stand for a strikeout in baseball?

In baseball scorekeeping, a swinging strikeout is recorded as a K, or a K-S. A strikeout looking (where the batter does not swing at a pitch that the umpire then calls strike three) is often scored with a backward K, and sometimes as a K-L, CK, or Kc (the ‘c’ for ‘called’ strike).

What does ‘k’ mean in a text message?

The letter ‘k’ in text messages is used as a shortened form of the word “Okay” or “OK”. I personally avoid using it in my conversations because I find ‘OK’ a more suitable and clearer form of communication when it comes to it. “Kay” is the shortened version of “okay”.

What does the acronym K stand for?

The “K” in “100K” can stand for a few things; it could mean kilometers, indicating a 100 kilometer foot race, commonly called an ultra-marathon. Alternately, it could simply refer to the prefix “kilo,” meaning one thousand.

## Why does the letter “K” stand for thousand?

The letter “K” is used to represent 1000, because it represents the prefix “kilo,” which means 1000 of something in the metric system. For instance, kilogram means 1000 grams. The prefix “kilo” was taken from the Greek word chilioi or khilioi, which means thousand.

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