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Top NLP Interview Questions to Keep a Note On


October 12, 2021


Artificial intelligence (AI), a vast and rapidly evolving area, has the potential to automate basic activities normally done by people, such as those requiring a grasp of linguistic and conversational subtleties. If you’re reading this, you’re presumably already aware of natural language processing (NLP), a branch of artificial intelligence that allows robots to communicate with people via language.

If you’re going for an NLP interview, you must know the answers to the most common NLP interview questions. Here are a few commonly asked NLP questions to give you a sense of what this topic is all about.


1. What Is Natural Language Processing?

While this may appear to be a simple NLP interview question, the manner you respond will reveal how well you understand NLP as a whole.

Natural language processing (NLP) is an automated method of understanding or analyzing the subtleties and significance of natural language by using machine learning algorithms to extract important information from written or spoken language. NLP aims to comprehend language beyond the basics and allow robots to learn via experience because meaning is mainly formed from its context.


2. What is an NLP pipeline?

When you use natural language processing on a text or speech, it transforms the entire input into strings, and then the prime string goes through a series of stages (the process called processing pipeline.) It supervises your input data using trained pipelines and reconstructs the entire string based on voice tone or phrase length.

The element returns to the main string after each pipeline. After that, it moves on to the next component. The elements, their models, and training determine the capacities and efficiency.


3. What does “parsing” mean in NLP?

In the field of NLP, “parsing” a document means deciphering its grammatical structure. An NLP program, for example, parses text by detecting the relationships between words and phrases inside it. Because the objective of parsing is to comprehend the grammar and what the author is attempting to express, it will vary from one batch of text to the next.


4. What is “named entity recognition”?

This is most likely going to be one of the NLP interviews questions you’ll be asked. Similarly, to sentence diagramming in elementary school, named entity recognition (NER) is an NLP technique that pulls apart the elements of a phrase to summarise it into its key elements. For e.g., the sentence “Sam moved to California in 1999” might be classified as:

  • Sam = name
  • California = city or location
  • 1999 = time

NER identifies facts linked to “who, what, when, and where” to assist machines to grasp the context of the content. In a customer service context, it’s great for scanning papers and reacting to chatbots.


5. What is a “stop” word?

“Stop” words are articles like “the” or “an,” as well as other filler words like “how,” “why,” and “is” that bond sentences together but don’t contribute much to the content. Stop words are frequently filtered out by search engines in order to get to the heart of a query and give the most relevant results.


6. What is “feature extraction”?

Feature extraction is the process of identifying important words or phrases that place them in a certain category, generally based on the author’s stated mood. A customer’s product evaluation, for example, may be characterized as a favorable review if the adjective “excellent” or the term “good quality” is used. The feature extraction method in NLP may be able to “tokenize” a phrase or use of specific terms into the favorable review category.


7. What is a Turing test?

Alan Turing devised the Turing test, which could tell the difference between people and machines. If a computer machine passes this test using language, it is called intelligent. Alan felt that a machine’s intellect could be demonstrated simply by its ability to utilize language in the same manner as humans do.


8. Name two applications of NLP that are used today?

  • Chatbots: Chatbots (powered by NLP) are frequently used to initiate customer service conversations, with the goal of resolving basic consumer questions and routing them to the appropriate staff if the chatbot is unable to do so. Companies benefit from increased efficiency and cost savings as a result of this.
  • Online Translation: NLP is used by services like Google Translate to transform written and spoken words into different languages, as well as to assist with pronunciation.


9. List a few Python libraries that you use for NLP.

GenSim, SpaCy, NLTK, Scikit-learn, CoreNLP, TextBlob.


10. What is the definition of collocation?

A collocation is a collection of two or more words that have a connection and may be used to express something in a traditional way. ‘Strong breeze,’ ‘the affluent and powerful,’ and ‘weapons of mass devastation,’ for example.


11. What is a neural network?

The term “network networks” refers to a collection of algorithms used to discover the links between datasets using a process similar to that of a human brain. These networks can adapt to changes in the input, allowing them to get the greatest outcomes without changing the output criterion. Artificial intelligence (AI) and machine learning (ML) technologies are the foundations of neural networks.

The neural network approach is similar to how a human brain works. In this context, a neuron is a mathematical operation that collects data and categorizes it according to a certain design.



NLP is one of the most promising fields for those with technical backgrounds since it is constantly evolving and expanding its effect across numerous industries. There are several NLP applications worth mentioning. To sit in an NLP interview, you must be familiar with a few specific themes as well as the fundamentals of artificial intelligence and NLP. However, the most crucial round for an applicant to concentrate on is the interview. However, you will find it challenging to pass the technical stages if you have no prior experience addressing real-world problems.

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