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Named Entity Recognition

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May 1, 2024 Updated June 18, 2025 22 minute read

A Comprehensive Guide to Named Entity Recognition

Named Entity Recognition, often abbreviated as NER, is a fundamental task in the field of Natural Language Processing (NLP). At its core, NER involves identifying and categorizing key pieces of information—known as "named entities"—within unstructured text. These entities can be anything from names of people, organizations, and locations to dates, monetary values, quantities, and even more specialized terms depending on the domain. Essentially, NER systems read text and tell you not just what words are present, but what those words represent in the real world or a specific context.

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Reading list

We've selected two books that we think will supplement your learning. Use these to develop background knowledge, enrich your coursework, and gain a deeper understanding of the topics covered in Named Entity Recognition.
Provides a comprehensive overview of NER techniques, with a focus on machine learning approaches. It covers various NER algorithms, feature engineering, and evaluation metrics. Written by leading researchers in the field, it is an invaluable resource for researchers and advanced learners.
Offers a solid foundation in natural language processing using the spaCy library in Python. It covers NER techniques as well as many other NLP tasks. Suitable for beginners to intermediate users, it provides a holistic view of NLP from data preprocessing to advanced techniques like sentiment analysis.
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