# How do you validate K means clustering?

## How do you validate K means clustering?

The way kmeans algorithm works is as follows:

- Specify number of clusters K.
- Initialize centroids by first shuffling the dataset and then randomly selecting K data points for the centroids without replacement.
- Keep iterating until there is no change to the centroids.

### How do you implement K means clustering in Python?

K means clustering algorithm steps

- Choose a random number of centroids in the data.
- Choose the same number of random points on the 2D canvas as centroids.
- Calculate the distance of each data point from the centroids.
- Allocate the data point to a cluster where its distance from the centroid is minimum.

**Why do we use K-means clustering?**

The K-means clustering algorithm is used to find groups which have not been explicitly labeled in the data. This can be used to confirm business assumptions about what types of groups exist or to identify unknown groups in complex data sets.

**Why K-means clustering is used?**

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

K-means clustering algorithm computes the centroids and iterates until we it finds optimal centroid. In this algorithm, the data points are assigned to a cluster in such a manner that the sum of the squared distance between the data points and centroid would be minimum.

### What does k mean in terms of clustering?

K-Means Clustering is a concept that falls under Unsupervised Learning. This algorithm can be used to find groups within unlabeled data.

**Which is the best algorithm for clustering data?**

Clustering algorithms seek to learn, from the properties of the data, an optimal division or discrete labeling of groups of points. Many clustering algorithms are available in Scikit-Learn and elsewhere, but perhaps the simplest to understand is an algorithm known as k-means clustering, which is implemented in sklearn.cluster.KMeans.

**How is k-modes clustering used in direct marketing?**

The data is related with direct marketing campaigns of a Portuguese banking institution. Cluster customers on the basis of attributes. Note: This python demonstration is for understanding the use of K-Modes clustering algorithm.

## What does it mean to cluster a group of data?

A cluster is a group of data that share similar features. We can say, clustering analysis is more about discovery than a prediction. The machine searches for similarity in the data.