Beginner

Introduction to spaCy

Discover the industrial-strength NLP library designed for production use, built by Explosion AI.

What is spaCy?

spaCy is an open-source library for advanced Natural Language Processing in Python. Unlike academic-focused libraries, spaCy is designed specifically for production use - it's fast, efficient, and provides pre-trained models for 75+ languages.

Created by Explosion AI, spaCy is written in Cython for maximum performance and provides a streamlined API that makes NLP accessible without sacrificing power.

Core Capabilities

📝

Tokenization

Rule-based tokenization with support for 75+ languages, handling contractions, URLs, emails, and special cases.

🏷

Named Entities

Recognize people, organizations, locations, dates, money amounts, and 15+ entity types out of the box.

🔗

Dependency Parsing

Understand grammatical structure with state-of-the-art dependency parsing and POS tagging.

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Transformers

Use transformer models (BERT, RoBERTa) as pipeline components via spacy-transformers integration.

spaCy vs Alternatives

FeaturespaCyNLTKTransformers (HF)Stanza
FocusProduction NLPEducation/ResearchDeep Learning NLPResearch
SpeedVery fast (Cython)Slow (Python)GPU-dependentModerate
PipelineIntegrated pipelineMix-and-matchTask-specificIntegrated
ModelsEfficient CNN/TRFRule-basedLarge transformersNeural
Trainingspacy train CLIManualTrainer APIManual
Best forProduction appsLearning NLPState-of-the-artMultilingual

A Quick Example

Python - spaCy in 5 lines
import spacy

nlp = spacy.load("en_core_web_sm")
doc = nlp("Apple is looking at buying U.K. startup for $1 billion")

for ent in doc.ents:
    print(f"{ent.text:20} {ent.label_:10} {spacy.explain(ent.label_)}")
# Apple                ORG        Companies, agencies, institutions
# U.K.                 GPE        Countries, cities, states
# $1 billion           MONEY      Monetary values
When to choose spaCy: Use spaCy when you need fast, reliable NLP in production. Choose NLTK for learning and experimentation. Choose Hugging Face Transformers when you need state-of-the-art accuracy on specific tasks and have GPU resources.
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Prerequisites: Basic Python knowledge. Familiarity with NLP concepts (tokens, entities, parts of speech) is helpful but not required - we'll cover everything from the ground up.

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