How to Build a Private ChatGPT Using Open-Source Technology? Download our free white paper.

The Importance of Disambiguation in Natural Language Processing

We spend 20+ hours disambiguating every week at Lettria. Here’s why it’s an important part of building an NLP pipeline, including all of its uses and benefits.

Talk to a GraphRAG expert

Have you ever read a sentence and wondered what the author really meant? Sometimes, words can have multiple meanings, depending on the context in which they are used. This can cause ambiguity, making it difficult for both humans and machines to understand the intended meaning. Disambiguation is the process of deciphering the true meaning of a word or phrase within a particular context. In other words, disambiguation helps us to "dis-ambiguate" text.

Why Disambiguation is Necessary

Disambiguation is a critical aspect of natural language processing (NLP) because it allows us to accurately detect sentiment, emotion, and recognize named entities. Without properly understanding the meaning of words in context, NLP systems can make mistakes, leading to misinterpretations and inaccurate results.

Sentiment Analysis

Lettria offers a range of modules that benefit from disambiguation. Let's explore some of these modules in more detail.

Sentiment analysis is the process of determining the sentiment expressed in a piece of text, be it positive, negative, or neutral. Disambiguation helps ensure that sentiment analysis accurately reflects the author's intended meaning, rather than getting confused by words with multiple meanings.

For example, consider the sentence: "I had a really hard time at the gym today." The word "hard" could be interpreted as either negative or positive, depending on the context. Disambiguation helps the sentiment analysis module to understand that, in this case, "hard" implies a challenging workout and not necessarily a negative experience.

We’ve written a more comprehensive article on sentiment analysis on our blog, which you can read for more knowledge on this topic.

Emotion Analysis

Emotion analysis takes sentiment analysis a step further, identifying specific emotions like joy, anger, or sadness conveyed in a text. Accurate emotion analysis relies on disambiguation to understand the context and meaning of words.

For instance, the word "love" can express different emotions depending on the context. Disambiguation helps to determine whether the word "love" refers to a romantic feeling or a general appreciation for something, which can then influence the emotion analysis result.

Named Entity Recognition

Named Entity Recognition (NER) is the process of identifying and classifying entities like people, organizations, or locations in a text. Disambiguation plays a key role in distinguishing between entities with similar names or when a word can refer to both a named entity and a common noun.

For example, "Apple" could refer to the technology company or the fruit. Disambiguation ensures that the NER module can accurately identify the correct entity within a specific context.

Natural Language Understanding

Natural Language Understanding (NLU) is a broader aspect of NLP that involves comprehending the meaning and intent behind a piece of text. Disambiguation is essential for accurate NLU, as it helps to clarify the context and meaning of words, phrases, and sentences.

For example, in the sentence "Can you book a flight to Paris?", disambiguation helps the NLU module understand that "book" means to reserve, rather than referring to a physical book.


Structuration is the process of organizing and structuring unstructured text data, making it easier to analyze and understand. Disambiguation plays a vital role in structuration, ensuring that the correct meaning and context of words and phrases are preserved as the text is reorganized.

For instance, consider a news article about a merger between two companies. Disambiguation can help the structuration module to correctly identify and categorize key information such as the names of the companies, the nature of the deal, and the financial terms.

Disambiguation is a crucial component of NLP that enables accurate understanding and analysis of text data. By implementing disambiguation in various modules like sentiment analysis, emotion analysis, named entity recognition, natural language understanding, and structuration, Lettria ensures that its users receive precise and reliable results.

This not only enhances the quality of insights gained from textual data but also paves the way for more advanced applications of NLP in various domains. By appreciating the importance of disambiguation, we can unlock the true potential of natural language processing and make more informed decisions based on textual data.

How We're Improving Disambiguation at Lettria

Some of our team performing weekly annotation in the office.

At Lettria, we are dedicated to continually enhancing our natural language processing (NLP) tools to make them more accurate, faster, and efficient. To achieve this, we collectively dedicate over 20 hours per week to manually annotating and disambiguating databases of English and French text. Our entire team meets for an hour and a half each week to work together on this important task.

Though it requires significant effort, this process is well worth it. By investing time in refining our disambiguation capabilities, we can consistently improve our tools and make the lives of our customers much easier.

Utilizing Our Own No-Code Platform for Annotation

A key aspect of our approach is that we use our own Lettria no-code platform to perform all the annotation as a team. By using our own tools, we not only streamline the annotation process but also constantly improve the user experience (UX) and user interface (UI) of our platform.

This hands-on experience with our platform allows us to identify areas for improvement and make necessary adjustments to ensure that our customers have the best possible experience when using our tools. In essence, we practice what we preach and are dedicated to making our platform user-friendly, efficient, and effective.

How We Train Our NLP Modules

Our approach to training NLP modules involves disambiguating both nouns and verbs in English and French. Over the past three years, our in-house linguistics experts have developed comprehensive graphs of all possible types of nouns (divided into abstract and concrete categories) and verbs.

To maintain the quality of our model, multiple annotators collaborate on a single annotation. We ensure that everyone agrees on the annotations before using them to train our model. This process, known as "consensus," guarantees that our NLP tools continue to deliver reliable results.

By focusing on improving disambiguation, Lettria is committed to providing exceptional NLP solutions. Our dedication to refining our tools and using our own no-code platform for annotation ensures that our customers can extract valuable insights from textual data, leading to better decision-making and more efficient workflows. Through constant innovation and a collaborative approach, we continue to push the boundaries of what's possible in the world of natural language processing.

Want to learn how to build a private ChatGPT using open-source technology?


What is AutoLettria

AutoML, in greater detail, is a powerful technology that simplifies the process of developing, optimizing, and deploying machine learning models by automating various aspects of the machine learning pipeline. It streamlines tasks such as data preprocessing, feature engineering, model selection, hyperparameter optimization, and model evaluation, making it accessible to a wider audience, including those with limited machine learning expertise.

AutoLettria is our very own AutoML solution, designed specifically to train our NLP tools using the annotations we create as a team. By leveraging the power of AutoML, AutoLettria significantly reduces the time and effort required to create highly accurate NLP models, ensuring that our solutions stay at the cutting edge of the field.

The exciting news is that we'll soon be launching AutoLettria within our platform, allowing users to label, annotate, and train their own NLP models without writing a single line of code. This seamless integration will enable anyone to develop and deploy customized NLP solutions in one single place.

How This Will Help You

With the upcoming launch of AutoLettria, you'll not only benefit from our pre-trained models but also have the ability to create your own machine learning and pattern-based solutions tailored to your specific needs. This all-in-one approach will empower you to harness the power of NLP in a more efficient and user-friendly way.


We hope this article provided valuable insights into the importance of disambiguation at Lettria and our commitment to constant improvement through our team-driven approach and the upcoming AutoLettria feature. If you're interested in launching your own NLP projects in a fraction of the time and cost compared to traditional methods, reach out to us, and we'll get you set up. Together, we can unlock the full potential of natural language processing to drive better decision-making and innovative solutions.


Build your NLP pipeline for free
Get started ->