NLP vs NLU vs NLG Know what you are trying to achieve NLP engine Part-1 by Chethan Kumar GN

The process by which NLP uses unstructured data sets to arrange said data into forms is underpinned by several different components. A sophisticated NLU solution should be able to rely on a comprehensive bank of data and analysis to help it recognize entities and the relationships between them. It should be able to understand complex sentiment and pull out emotion, effort, intent, motive, intensity, and more easily, and make inferences and suggestions as a result. It should also have training and continuous learning capabilities built in.

Difference Between NLU And NLP

This component responds to the user in the same language in which the input was provided say the user asks something in English then the system will return the output in English. Natural Language Processing is a subset of Artificial intelligence which involves communication between a human and a machine using a natural language than a coded or byte language. It provides the ability to give instructions to machines in a more easy and efficient manner. According to various industry estimates only about 20% of data collected is structured data. The remaining 80% is unstructured data—the majority of which is unstructured text data that’s unusable for traditional methods. Just think of all the online text you consume daily, social media, news, research, product websites, and more.


NLP is also used whenever you ask Alexa, Siri, Google, or Cortana a question, and anytime you use a chatbot. The program is analyzing your language against thousands of other similar queries to give you the best search results or answer to your question. These terms are often confused because they’re all part of the singular process of reproducing human communication in computers.

Natural Language Understanding deconstructs human speech using trained algorithms until it forms a structured ontology, or a set of concepts and categories that have established relationships with one another. This computational linguistics data model is then applied to text or speech as in the example above, first identifying key parts of the language. Question answering is a subfield of NLP and speech recognition that uses NLU to help computers automatically understand natural language questions. Text analysis solutions enable machines to automatically understand the content of customer support tickets and route them to the correct departments without employees having to open every single ticket. Not only does this save customer support teams hundreds of hours,it also helps them prioritize urgent tickets.

Research Services

Contact us today to learn how Lucidworks can help your team create powerful search and discovery applications for your customers and employees. Different components underpin the way NLP takes sets of unstructured data in order to structure said data into formats. Before booking a hotel, customers want to learn more about the potential accommodations. People start asking questions about the pool, dinner service, towels, and other things as a result.

  • Yes, that’s almost tautological, but it’s worth stating, because while the architecture of NLU is complex, and the results can be magical, the underlying goal of NLU is very clear.
  • Recommendations on Spotify or Netflix, auto-correct and auto-reply, virtual assistants, and automatic email categorization, to name just a few.
  • Together, these two competencies allow artificial intelligence to understand what people say and answer back coherently.
  • Internal ChatbotsOne use case for chatbots that is often overlooked is the internal chatbot for employees within a company…
  • For this task daily, you have to research and collect text, create reports, and post them on a website.
  • Even the best NLP systems are only as good as the training data you feed them.

NLP APIs can be an unpredictable black box—you can’t be sure why the system returned a certain prediction, and you can’t troubleshoot or adjust the system parameters. You can see the source code, modify the components, and understand why your models behave the way they do. So, if you’re Google, you’re using natural language processing to break down human language and better understand the true meaning behind a search query or sentence in an email. You’re also using it to analyze blog posts to match content to known search queries.


In the 1970s and 1980s, the natural language processing group at SRI International continued research and development in the field. However, with the advent of mouse-driven graphical user interfaces, Symantec changed direction. A number of other commercial efforts were started around the same time, e.g., Larry R. Harris at the Artificial Intelligence Corporation and Roger Schank and his students at Cognitive Systems Corp. In 1983, Michael Dyer developed Difference Between NLU And NLP the BORIS system at Yale which bore similarities to the work of Roger Schank and W. The program STUDENT, written in 1964 by Daniel Bobrow for his PhD dissertation at MIT, is one of the earliest known attempts at natural-language understanding by a computer. Eight years after John McCarthy coined the term artificial intelligence, Bobrow’s dissertation showed how a computer could understand simple natural language input to solve algebra word problems.

  • Ideally, your NLU solution should be able to create a highly developed interdependent network of data and responses, allowing insights to automatically trigger actions.
  • Also known as natural language interpretation, natural language understanding is a data science competency that allows artificial intelligence to understand human communication.
  • It should also have training and continuous learning capabilities built in.
  • NLU also enables computers to communicate back to humans in their own languages.
  • While the awareness of entities in a body of text may be remarkable, the true wonder of NLU is its capacity for intent classification.
  • Understanding the key difference between NLU and NLP will empower your software development journey.

Includes NLU training data to get you started, as well as features like context switching, human handoff, and API integrations. Rasa Open Source is the most flexible and transparent solution for conversational AI—and open source means you have complete control over building an NLP chatbot that really helps your users. The system also needs theory from semantics to guide the comprehension. The interpretation capabilities of a language-understanding system depend on the semantic theory it uses.

What is NLP?

After all, different sentences can mean the same thing, and, vice versa, the same words can mean different things depending on how they are used. A natural language is one that has evolved over time via use and repetition. Latin, English, Spanish, and many other spoken languages are all languages that evolved naturally over time.

What is the difference between ML and NLP?

Machine learning is primarily concerned with accuracy and pattern recognition. NLP is concerned with computer-human language interactions, specifically how to program computers to process, and analyze large amounts of natural language data.

NLP attempts to analyze and understand the text of a given document, and NLU makes it possible to carry out a dialog with a computer using natural language. Named entities are grouped into categories — such as people, companies and locations. Numeric entities are recognized as numbers, currencies and percentages. In conclusion, I hope now you have a better understanding of the key differences between NLU and NLP.

Solutions for Government

In the real world, user messages can be unpredictable and complex—and a user message can’t always be mapped to a single intent. Rasa Open Source is equipped to handle multiple intents in a single message, reflecting the way users really talk. ” Rasa’s NLU engine can tease apart multiple user goals, so your virtual assistant responds naturally and appropriately, even to complex input. It takes data from a search result, for example, and turns it into understandable language. So whenever you ask your smart device, “What’s it like on I-93 right now?

Difference Between NLU And NLP