Named Entity Recognition: An Easy Overview In 2021


NER or Named Entity Recognition (otherwise called entity extraction, entity chunking, and named entity identification) is a subtask of data extraction that looks to locate and order named entities referenced in unstructured text into pre-characterized classes, for example, percentages, monetary values, quantities, time expressions, medical codes, locations, organizations, person names, and so on.

NER model, likewise called entity extraction or entity identification, is a NER NLP (Natural Language Processing) procedure that consequently distinguishes named elements in the text and classifies them into predefined classifications.

In this article let us look at:

  1. How Does Named Entity Recognition Work?
  2. What Is Named Entity Recognition (NER) Used For?
  3. How to Perform Named Entity Recognition?

1. How Does Named Entity Recognition Work?

At the point when we read a text, we normally perceive named substances like locations, values, people, etc. For NER example, in the sentence “‎Larry Page‎ is one of the founders of Google, an organization from the United States”, we can recognize three kinds of substances: 

  1. Location”: United States
  2. Company”: Google
  3. Person”: ‎Larry Page‎

For PCs, in any case, we need to assist them with perceiving substances first so they can order them. 

This is done through Natural Language Processing (NLP) and Machine Learning (ML). Named Entity Recognition algorithm that extricates information from unstructured text data and sorts it into groups.

Natural Language Processing examines the structure and rules of language and makes clever frameworks equipped for getting significance from speech and text, while ML assists machines with learning and improve over the long haul.

To see how does NER work read the interaction examined beneath with different segments:

  • Extracting the Information

The initial phase in named entity recognition is extricating the data by recognizing and setting up the named elements referenced in the texts, sentence, paragraph and document. 

  • Searching the Entities

The following interaction is named entity recognition, which is looking through the element possibility to refer to in the document. Multiple pages, names, and instructive pages pseudonyms additionally considered to get the equivalent words.

2. What Is Named Entity Recognition (NER) Used For?

Applications of named entity recognition assist you with recognizing the vital components in text, similar to monetary values, brands, places, names of people, and many more.

Separating the primary elements in text aids sort unstructured data and recognize significant data, which is pivotal if you need to manage a huge NER dataset.

Here are some intriguing named entity recognitions to use cases:

  • Research Papers
  • Customer Support
  • Powering Content Recommendations
  • Efficient Search Algorithms
  • Process Resumes
  • Classifying content for news providers
  • Research Papers

A publication site or online journal holds a huge number of scholarly articles and research papers. There can be many papers on a solitary subject with slight adjustments. Coordinating this information in an all-around organized way can get fiddly. “Skimming” through that amount of information internet, searching for specific data is most likely not the most ideal choice.

  • Customer Support

There are a few different ways to make the cycle of customer feedback taking care of smooth, and Named Entity Recognition could be one of them. On the off chance that you are taking care of the customer assistance division of an electronic store with numerous branches around the world, you experience a few notices in your customers’ feedback.

  • Powering Content Recommendations

Numerous advanced applications, like YouTube and Netflix, depend on recommendation frameworks to make ideal user experiences. A ton of these frameworks depend on  Named Entity Recognition which can make ideas dependent on user search history.

  • Efficient Search Algorithms

With this methodology, a search term will be coordinated with just the little entities of substances examined in each article, prompting quicker hunt execution.

  • Process Resumes

Enrolment specialists spend numerous hours of their day experiencing resumes, searching for the right candidate. Each resume contains a similar kind of data, yet they’re regularly coordinated and designed unexpectedly. 

By utilizing a Named Entity Recognition, recruitment groups can immediately extract the most applicable data about candidates, from individual information to data identified with their experience and training.

  • Classifying content for news providers

Publishing and news houses create a lot of online substance every day, and overseeing them effectively is vital to get the most utilization of each article. Named Entity Recognition can naturally check whole articles and uncover which are the significant individuals, associations, and spots talked about in them.

3. How to Perform Named Entity Recognition?

The most straightforward approach to begin with NER is by utilizing an Application Programming Interface. Fundamentally, you can pick between two kinds:

  • SaaS named entity recognition APIs

SaaS tools are cost-effective, low-code, and ready-to-use solutions. Also, they are not difficult to coordinate with other well-known code. 

MonkeyLearn, for instance, is a text analysis Software as a Service platform that you can use for various Natural Language Processing undertakings, one of which is NERR.

  • Open-Source named entity recognition APIs

Open-source APIs are for developers: they are free, adaptable, and involve a delicate learning curve. Here are a couple of alternatives: 

  1. Natural Language Toolkit (NLTK)
  2. SpaCy Named Entity Recognizer
  3. Stanford Named Entity Recognizer (SNER)

Named Entity Recognition Tools:

  • Dataturks
  • Dandelion API
  • Lionbridge
  • Appen
  • Prodigy
  • LightTag
  • Tagtog
  • ParallelDots
  • Figure Eight
  • Scale


There are numerous techniques like natural language processing, topic modelling, and named entity recognition accessible for separating information from unstructured data. Among them, NER is a strategy for extricating information from unstructured content data.

There are no right or wrong ways of learning AI and ML technologies – the more, the better! These valuable resources can be the starting point for your journey on how to learn Artificial Intelligence and Machine Learning. Do pursuing AI and ML interest you? If you want to step into the world of emerging tech, you can accelerate your career with this Machine Learning And AI Courses by Jigsaw Academy.



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