Wednesday, 6 December 2023

Natural Language Generation Process: An Overview of the Steps Involved in NLG


The field of natural language generation (NLG) has come a long way in recent years. With advancements in artificial intelligence and machine learning, it is now possible to automatically generate human-like text with a high degree of accuracy. In this article, we’ll take a closer look at the steps involved in the natural language generation process and how it works.

Understanding the Input Data

The first step in the natural language generation process is to understand the input data. This involves analyzing the data to determine the structure and content of the information. The data can come from a variety of sources, including databases, spreadsheets, and APIs. It is important to ensure that the data is clean, organized, and in a format that can be easily analyzed.

Data Pre-processing

Once the data has been analyzed, the next step is to pre-process it. This involves cleaning the data and removing any irrelevant information. The pre-processing step also involves transforming the data into a format that can be used for natural language generation. This may include converting the data into a structured format, such as a table or a spreadsheet, or converting it into a more natural language format, such as a sentence or a paragraph.

Rule-based Generation

The next step in the natural language generation process is rule-based generation. This involves using a set of rules to generate text based on the input data. The rules are based on the structure of the data and the desired output format. For example, if the data is in the form of a table, the rules may specify that each row of the table should be converted into a separate sentence.

Machine Learning-based Generation

In addition to rule-based generation, there is also machine learning-based generation. This involves using machine learning algorithms to generate text based on the input data. The algorithms are trained on a large corpus of text and use statistical models to generate text that is similar to the training data. This approach can produce more natural and human-like text than rule-based generation.

Evaluating the Output

The final step in the natural language generation process is evaluating the output. This involves checking the generated text for accuracy, completeness, and overall quality. The generated text may be compared to the input data to ensure that it accurately reflects the information. It may also be evaluated by human reviewers to assess its readability and naturalness.


The natural language generation process is an important tool for automatically generating human-like text. By understanding the steps involved and how it works, it is possible to generate high-quality text that accurately reflects the input data. Whether you’re using rule-based or machine learning-based generation, the key is to ensure that the output is accurate, complete, and of high quality.