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What is Text Classification? - Definition & Meaning

Learn what text classification is, how AI automatically categorizes text, and why it is essential for email routing, tagging, and document processing.

Definition

Text classification is an NLP task where texts are automatically assigned to one or more predefined categories. It is one of the most common and useful NLP applications.

Technical explanation

Text classification includes binary classification (spam/not spam), multi-class (topic, intent), and multi-label (multiple tags per document). Methods: Naive Bayes, SVM, and modern transformers (BERT, RoBERTa) with a classification layer. Feature extraction: bag-of-words, TF-IDF, or encoder output. Fine-tuning on labeled data is standard. Use cases: email routing, support ticket categorization, content tagging, topic modeling, and intent detection for chatbots.

How AVARC Solutions applies this

AVARC Solutions builds text classification for email routing, ticket categorization, content tagging, and intent detection. We use transformer models and train on client-specific categories and Dutch-language data.

Practical examples

  • An email system classifying incoming messages as "sales", "support", or "general" for automatic routing.
  • A help desk tagging tickets by type (technical, billing, complaint) and priority based on content.
  • A content platform automatically tagging articles with topics for search and recommendations.

Related terms

sentiment analysisnlpnamed entity recognitionconversational ai

Further reading

What is Sentiment Analysis?What is NLP?What is NER?

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Frequently asked questions

Text classification assigns a whole document or sentence to a category (e.g., "support"). NER identifies and labels specific spans in the text (e.g., [Amsterdam]LOC). Both are NLP tasks but with different outputs.
With transfer learning (BERT etc.), 100–500 labeled examples per category can already yield good results. For complex or fine-grained categories, more data is recommended. AVARC Solutions helps determine what is needed.

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