What is Text Mining and How it is Used in Data Science?

In the field of data science, text mining is a valuable technique used to extract valuable insights from unstructured data. This method involves extracting qualitative information from written text such as emails, social media posts and customer reviews. In this article, we will explore what text mining is, how it is used in data science, and provide some code examples.

Table of Contents

1 – Introduction

2 – What is Text Mining?

3 – The Process of Text Mining

  • Data Collection
  • Data Pre-processing
  • Data Exploration
  • Feature Extraction
  • Model Building
  • Evaluation

4- Applications of Text Mining in Data Science

5- Code Examples in Text Mining with Python

6- Conclusion


Text mining, also known as text analytics, is a technique used to gain high-quality information from written text using computational and statistical methods. Text mining is a crucial aspect of data science as it enables organizations to extract worthful insights from unstructured data that would otherwise be difficult or impossible to obtain.

What is Text Mining?

Text mining involves extracting useful insights and patterns from unstructured text data. This may include information from a variety of sources, including social media posts, customer reviews, emails and more. The purpose of text mining is to analyze large volumes of data and extract insights that can be used to improve business processes, improve customer experience and gain a competitive advantage.

The Process of Text Mining

The text mining work involves several steps, including data collection, pre-processing, data exploration, feature extraction, simulate building, and evaluation.

Data Collection

The first step in text mining is to collect the data  to be analyzed. This may include multiple data sources such as social media posts, customer reviews, or other text-based data. It is important to ensure that data is collected in a structured format that is easy to process and analyze.

Data Preprocessing

Once the data is collected, the next step is to pre-process the data to ensure that it is ready for analysis. This can include tasks such as removing stop words, stemming and lemmatization. These tasks help standardize the data and eliminate noise that may affect the analysis.

Data Exploration

Once the data is pre-processed, the next step is to explore the data to gain insights and identify patterns. This may include tasks such as word frequency analysis, sentiment analysis and topic modelling.

Feature Extraction

The next step in text mining is feature extraction. This involves identifying the key features or attributes of the text data which are most relevant to the analysis. Common techniques for feature extraction include bag-of-words, term frequency-inverse document frequency (TF-IDF), and word embeddings.

Model Building

Once the features have been extracted, the next step is to build a model that can be used to analyze the data. This can include techniques such as clustering, classification, and regression.


The final step in the text mining process is to evaluate the performance of the model. This requires testing the model on a separate dataset to ensure its accuracy and reliability.

Applications of Text Mining in Data Science

Text mining has a wide range of applications in data science. Some common applications include:

1 – Customer sentiment analysis
2 – Social media analytics
3 – Email Classification
4 – Topic modelling
5 – Classification of texts


In this article, we discussed about Text mining is a powerful technique for gaining insights from large text data. Python has become a popular text mining language due to its extensive NLP and machine learning libraries.

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