Text & NLP Annotation Services for Language AI

Build NLP, search, chatbot and LLM training data across 30+ languages with native reviewers, Indic and code-mixed coverage, and measured agreement.

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What Is Text & NLP Annotation?

Text annotation adds structured meaning to written language. If position matters, use Document & OCR Annotation. To judge model output, use LLM & RLHF Annotation.

Text Annotation Types We Deliver

Named Entity Recognition

Taxonomy-tested labels delivered with measured quality.

Nested and Overlapping Entities

Taxonomy-tested labels delivered with measured quality.

Relation Extraction

Taxonomy-tested labels delivered with measured quality.

Coreference Resolution

Taxonomy-tested labels delivered with measured quality.

Text Classification

Taxonomy-tested labels delivered with measured quality.

Sentiment and Aspect Sentiment

Taxonomy-tested labels delivered with measured quality.

Intent and Slot Filling

Taxonomy-tested labels delivered with measured quality.

Part-of-Speech and Syntax

Taxonomy-tested labels delivered with measured quality.

Text Span Extraction

Taxonomy-tested labels delivered with measured quality.

Search Relevance

Taxonomy-tested labels delivered with measured quality.

Machine Translation Post-Editing

Taxonomy-tested labels delivered with measured quality.

Semantic Similarity and RAG Quality

Taxonomy-tested labels delivered with measured quality.

The Label Set Matters More Than the Annotator Count

We test mutual exclusivity, exhaustiveness, learnability, boundary rules, granularity and real-corpus grounding before scale.

Our Text Annotation Process

  1. Corpus review
  2. Taxonomy stress-test
  3. Guidelines
  4. Calibration
  5. Pilot
  6. Production and QA
  7. Delivery and iteration

Quality You Can Measure

Cohen's kappa, Krippendorff's alpha, strict and relaxed span F1, boundary agreement, blind duplicates, gold sets and adjudication.

Indic and Code-Mixed Language Annotation

Hindi, Bengali, Tamil, Telugu, Marathi, Gujarati, Kannada, Malayalam, Punjabi, Odia, Assamese and Urdu, plus 18 more languages.

Related Services

Text Data Collection Translation Services Localization Services Data Cleaning & Validation

Frequently Asked Questions

What is text annotation?

Text annotation adds structured meaning to written language so models can learn entities, sentiment, intent, relations and categories.

Do you support Indic and code-mixed text?

Yes. Native reviewers handle Hinglish, romanised Indic, script switching, dialect and register across 30+ languages.

How do you measure quality?

We report inter-annotator agreement, span F1, boundary agreement, blind duplicates and expert-adjudicated gold sets.

How do we start?

Share a representative sample and taxonomy, or ask eQOURSE to design one, for a pilot and agreement report.