Text & Audio Annotation94.5% Accuracy

Conversational AI Training Dataset

Large-scale annotation of customer service conversations, chat logs, and voice recordings to train intent classification, entity extraction, and sentiment analysis models for conversational AI platform.

Client:Enterprise Software Company
1.2M
Conversations Annotated
Across text, chat, and voice channels
92%
Intent Accuracy
For intent classification model performance
12 languages
Language Coverage
Including low-resource languages
45%
NLU Improvement
Reduction in conversation failure rate

The Challenge

Needed to annotate 1 million+ customer conversations across 12 languages with complex intent hierarchies, nested entities, and contextual sentiment. Annotations required understanding domain-specific terminology, handling code-switching, and maintaining consistency across languages.

Our Solution

Assembled multilingual annotation team of 80 linguists with customer service domain expertise. Developed comprehensive annotation schema covering 150+ intents and 45 entity types. Implemented inter-annotator agreement monitoring and continuous guideline refinement achieving 0.87 Cohen's Kappa.

Project Specifications

Data Volume

1.2M conversations, 15K audio hours

Team Size

80 multilingual linguists

Duration

5 months

Accuracy

94.5%

Annotation Types

Intent Classification
Entity Extraction
Sentiment Analysis
Dialogue Act Tagging
Transcription

Tools & Technologies

ProdigyDoccanoAudacityCustom NLP ToolsAgreement Calculators

Deliverables

Annotated Conversations
Intent Taxonomy
Entity Guidelines
Multilingual Models
Quality Metrics

Sample Annotations

Intent Hierarchies

Multi-level intent classification covering customer inquiries, complaints, requests, and feedback

Entity Extraction

Precise span annotation for dates, locations, product names, order IDs, and custom domain entities

Sentiment & Emotion

Fine-grained sentiment scoring with emotion detection (frustrated, satisfied, confused, etc.)

Ready to Start Your Annotation Project?

Let's discuss your data annotation needs and how we can deliver high-quality labeled data for your AI initiatives.

KodeNerds - AI, ML, and Software Development Services