Table of Contents

## What is distance based clustering?

In distance-based clustering, a distance metric is used to determine. similarity between data objects. The distance metric can be used to cluster observations by. considering the distances between objects directly or by considering distances between.

**Are clustering methods which are based on distance?**

Distance based methods optimize a global criteria based on the distance between patterns. Some of the popular distance based clustering methods are k-means [5], CLARA [6], and CLARANS [7]. Density based partitional clustering methods optimize local criteria based on density distribution of patterns.

**How is geodesic distance calculated?**

The simplest way to calculate geodesic distance is to find the angle between the two points, and multiply this by the circumference of the earth. The formula is: angle = arccos(point1 * point2) distance = angle * pi * radius.

### What is distance based clustering in machine learning?

In this type, the dataset is divided into a set of k groups, where K is used to define the number of pre-defined groups. The cluster center is created in such a way that the distance between the data points of one cluster is minimum as compared to another cluster centroid.

**What are the different types of clustering techniques?**

The various types of clustering are:

- Connectivity-based Clustering (Hierarchical clustering)
- Centroids-based Clustering (Partitioning methods)
- Distribution-based Clustering.
- Density-based Clustering (Model-based methods)
- Fuzzy Clustering.
- Constraint-based (Supervised Clustering)

**What is clustering in data warehouse?**

Clustering is the process of making a group of abstract objects into classes of similar objects. Points to Remember. A cluster of data objects can be treated as one group. While doing cluster analysis, we first partition the set of data into groups based on data similarity and then assign the labels to the groups.

#### What is a geodesic in graph theory?

In the mathematical field of graph theory, the distance between two vertices in a graph is the number of edges in a shortest path (also called a graph geodesic) connecting them. This is also known as the geodesic distance or shortest-path distance.

**What is average geodesic distance?**

The average geodesic distance is 6.41, and, interestingly, distances normally distribute around this peak. The largest distance is also remarkably small: 23 (there are 8 different geodesics with this length).

**What is clustering in data structure?**

Clustering is the task of dividing the population or data points into a number of groups such that data points in the same groups are more similar to other data points in the same group than those in other groups. In simple words, the aim is to segregate groups with similar traits and assign them into clusters.

## How many types of clustering methods are there in big data analytics?

There are two different types of clustering, which are hierarchical and non-hierarchical methods.