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What is Natural Language Generation (NLG) with Example

  • October 12, 2023
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Meet the Author : Mr. Bharani Kumar

Bharani Kumar Depuru is a well known IT personality from Hyderabad. He is the Founder and Director of Innodatatics Pvt Ltd and 360DigiTMG. Bharani Kumar is an IIT and ISB alumni with more than 18+ years of experience, he held prominent positions in the IT elites like HSBC, ITC Infotech, Infosys, and Deloitte. He is a prevalent IT consultant specializing in Industrial Revolution 4.0 implementation, Data Analytics practice setup, Artificial Intelligence, Big Data Analytics, Industrial IoT, Business Intelligence and Business Management. Bharani Kumar is also the chief trainer at 360DigiTMG with more than Ten years of experience and has been making the IT transition journey easy for his students. 360DigiTMG is at the forefront of delivering quality education, thereby bridging the gap between academia and industry.

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Have you ever wondered how machines can write text that sounds just like a human wrote it? Welcome to the fascinating world of Natural Language Generation (NLG).

Imagine a future where artificial intelligence can effortlessly churn out engaging stories, reports, and even personalized responses to your queries. NLG is the key that unlocks this exciting possibility.

Did you know that NLG is the driving force behind the chatbots and virtual assistants you interact with daily? Discover the magic that makes these AI-powered interactions possible.

From news articles to personalized product descriptions, NLG is reshaping the way we consume content online. Get ready to delve into the innovative technology behind automated content creation.

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Have you ever wondered how machines can effortlessly translate languages in real-time, bridging communication gaps across the globe? NLG holds the secret to breaking down language barriers.

In the age of artificial intelligence, Natural Language Generation (NLG) has emerged as a ground-breaking technology that empowers machines to generate human-like text. NLG is an essential subfield of Natural Language Processing (NLP) that focuses on converting structured data or information into coherent and expressive narratives, just like a human would write. As NLG continues to advance rapidly, its applications span across various domains, revolutionizing content creation, customer service, data analysis, and more. This blog explores the intricacies of NLG, its underlying techniques, its vast array of applications, and its potential impact on various industries.

Natural Language Generation

Understanding Natural Language Generation (NLG)

Natural Language Generation is an artificial intelligence technique that enables machines to produce human-like text that is grammatically correct, coherent, and contextually appropriate. NLG systems are designed to interpret structured data or information, such as databases, spreadsheets, or JSON files, and transform it into a narrative format that can be easily understood by humans. The process involves multiple steps, including data preprocessing, content planning, sentence generation, and post-processing.

NLG is a subset of Artificial Intelligence (AI) that focuses on converting structured data into human-readable text or speech. It involves algorithms and models that analyse data, extract relevant information, and generate text in a natural, language-like manner. The goal of NLG is to bridge the gap between humans and machines by allowing machines to communicate effectively with users.

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How Does NLG Work?

NLG systems follow a multi-step process. Firstly, the system collects and pre-processes the data from various sources. Next, it uses AI techniques, such as machine learning and natural language processing (NLP), to understand the underlying patterns and relationships within the data. Once the analysis is complete, the NLG system generates coherent and contextually relevant narratives, tailored to the intended audience.

Understanding NLG in AI

NLG is a subfield of AI that focuses on converting structured data into human-readable text or speech. It acts as a bridge between data analysis and human communication, allowing machines to transform complex information into coherent narratives that can be easily understood by humans. The primary goal of NLG is to enable machines to communicate more effectively with users, fostering a seamless and natural interaction.

Natural Language Generation

How NLG Works in AI?

The NLG process involves several essential steps

  • Data Pre-processing: NLG systems start by collecting and pre-processing data from diverse sources, such as databases, spreadsheets, and text documents.
  • Information Extraction: AI techniques, including machine learning and natural language processing, are employed to analyse the data and extract relevant insights and patterns.
  • Content Generation: Once the analysis is complete, the NLG system generates text that presents the extracted information in a coherent and contextually relevant manner.
  • Post-Processing: Additional refinement may be applied to enhance the naturalness and readability of the generated text.

The Role of NLG in NLP

In the realm of NLP, NLG acts as a complementary technology to Natural Language Understanding (NLU). While NLU allows machines to comprehend human language, NLG enables machines to effectively communicate with humans in a language they understand. By bridging the gap between data analysis and human communication, NLG completes the full cycle of NLP, creating a seamless and dynamic interaction between humans and machines.

The NLG Process in NLP

NLG in NLP involves several key stages:

  • Data Pre-processing: NLG systems begin by gathering and pre-processing data from various sources, which could include structured datasets, databases, or unstructured text.
  • Information Extraction: NLP techniques, such as machine learning and text mining, are employed to analyse and extract essential insights and patterns from the data.
  • Content Generation: Once the information is extracted, NLG systems use predefined rules and models to generate coherent narratives that convey the extracted insights.
  • Post-Processing: Additional refinement may be applied to the generated text to enhance its naturalness and readability.
Natural Language Generation

What are NLG Tools?

NLG tools are software applications or platforms that leverage AI and NLP techniques to generate human-readable text or speech from structured data. These tools act as powerful assistants, converting complex data sets, insights, or templates into coherent narratives, saving time and effort for content creators and analysts. NLG tools play a pivotal role in automating content generation and enabling machines to communicate more effectively with humans.

Functionalities of NLG Tools

  • Data-to-Text Conversion: NLG tools excel at transforming structured data, such as charts, tables, and statistics, into meaningful and informative narratives, making data-driven insights more accessible to non-experts.
  • Personalization: Many NLG tools offer personalized content generation, tailoring the output based on user preferences, historical data, or individual behaviour.
  • Report Automation: NLG tools are widely used to automate the generation of reports, summaries, and business intelligence dashboards, enabling businesses to stay informed and make data-driven decisions.
  • Language Translation: Some NLG tools incorporate machine translation capabilities, allowing users to produce content in multiple languages.
  • Chatbot Integration: NLG tools are integrated into chatbots and virtual assistants, making conversations with these AI-powered systems more natural and engaging.

Understanding NLG Algorithms

NLG algorithms are a subset of Artificial Intelligence (AI) and Natural Language Processing (NLP) techniques that convert structured data into coherent narratives in natural language. They enable machines to understand and generate human-like text or speech, bridging the gap between data analysis and human communication. NLG algorithms are designed to mimic the language generation process of humans, allowing machines to produce content that is contextually relevant and linguistically accurate.

Natural Language Generation

Types of NLG Algorithms

  • Template-Based NLG: The simplest form of NLG involves using predefined templates to insert data into specific slots. This method works well for generating repetitive content, like weather forecasts or financial reports.
  • Rule-Based NLG: Rule-based NLG systems utilize a set of linguistic rules and templates to generate text. These rules govern the selection of words, grammar, and sentence structure. While effective for straightforward applications, rule-based NLG may lack the flexibility needed for complex scenarios.
  • Statistical NLG: This approach employs statistical models, such as n-grams or language models like GPT-3, to predict and generate text based on patterns observed in large datasets. These models have shown significant improvements in generating more natural-sounding language.
  • Machine Learning-based NLG: Advanced machine learning algorithms, such as deep learning and recurrent neural networks (RNNs), have revolutionized NLG by enabling the creation of more contextually aware and creative language models.

Applications of NLG

  • Content Creation: NLG systems are being widely used to automate content creation in various industries, including journalism, e-commerce, and advertising. News agencies utilize NLG to generate news summaries quickly, while e-commerce platforms use it to create product descriptions at scale. Natural Language Generation
  • Business Intelligence and Reporting: NLG finds extensive use in generating automated business reports, performance summaries, and financial analyses. This helps organizations make data-driven decisions more efficiently.
  • Customer Service: NLG-powered chatbots enhance customer service by providing personalized responses to user queries, addressing frequently asked questions, and handling routine interactions, all while imitating human conversation. Natural Language Generation
  • Language Translation: NLG is leveraged in machine translation systems, enabling real-time translation between languages, making communication across borders and cultures smoother.
  • Personal Assistants and Voice Interfaces: Virtual assistants like Siri, Alexa, and Google Assistant employ NLG to provide voice-based responses, assist with tasks, and interact with users naturally. Natural Language Generation
  • Accessibility and Inclusivity: NLG technology plays a vital role in improving accessibility for individuals with visual or reading impairments by converting text content into speech.
  • Data Analysis and Interpretation: NLG can transform complex data sets into human-readable summaries, making it easier for non-technical stakeholders to understand the insights and implications of the data.

Challenges and Ethical Considerations

While NLG offers numerous advantages, it also presents some challenges and ethical concerns.

  • Bias in Language Generation: NLG models can inadvertently amplify existing biases present in the training data. This can lead to the generation of biased, prejudiced, or offensive content.
  • Disinformation and Misuse: The ease of generating human-like text could potentially be exploited to create false information or deep fake content, leading to trust and security issues.
  • Lack of Creativity: While NLG models can produce coherent text, they often struggle to exhibit true creativity, humour, or nuanced emotions.
  • Privacy Concerns: The data used to train NLG models might contain sensitive information, raising privacy concerns if not handled properly.


The future of NLG holds immense potential, as ongoing research and development continue to improve the capabilities of language models. Efforts to mitigate bias and enhance model creativity are essential to ensure responsible and ethical use. With the increasing demand for automated content generation and personalized experiences, NLG is poised to become an integral part of various industries.

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As we embrace NLG technology, it is crucial to maintain a balance between the convenience it offers and the potential risks it poses. By leveraging NLG responsibly, we can unlock its power to enhance productivity, accessibility, and communication, creating a more connected and inclusive world. As NLG technology evolves, it will undoubtedly shape the way we interact with AI-driven systems, turning them into valuable assistants that empower us with the gift of language.

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