Introduction In natural language processing, particularly text mining, topic modeling is a very important technique used commonly for identifying topics from a text source to enable informed decision making. Topic modeling is an unsupervised statistical modeling technique used for finding out a group of words, which collectively represent a topic in a large collection of documents. The article focusses on…

# Category: Unsupervised Learning

## Implementing Principal Component Analysis using Python

This article is in continuation of my previous article on Mathematics of Principal Component Analysis (PCA). It is advised to go through that article before moving into this article. In this post, I will explain how to implement PCA using Python. I have taken the wholesale customer distribution dataset from UCI Machine Learning repository. This dataset refers to clients of…

## Mathematics of Principal Component Analysis (PCA)

Understanding Principal Component Analysis In this part of the article, I will try to explain the mathematics and intuition behind Principal Component Analysis and in the next part, I will show how to implement Principal Component Analysis (PCA) using Python. PCA is an unsupervised machine learning technique which creates a low dimensional representation of a dataset. PCA is used to…