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Christian Ezennia

AI Data Labeling Specialist

Nigeria flagabuja, Nigeria
$7.00/hrExpertOtherCVATDoccano

Key Skills

Software

Other
CVATCVAT
DoccanoDoccano
Label StudioLabel Studio
ProdigyProdigy

Top Subject Matter

AI/ML Model Training
NLP/Conversational AI
Conversational AI/NLP

Top Data Types

TextText
ImageImage

Top Task Types

ClassificationClassification
Entity (NER) ClassificationEntity (NER) Classification

Freelancer Overview

AI Data Labeling Specialist. Brings 2+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other. Education includes Bachelor of Engineering, Anambra State University for Science and Technology (2020). AI-training focus includes data types such as Text and Image and labeling workflows including Classification and Entity (NER) Classification.

ExpertEnglish

Labeling Experience

AI Data Labeling Specialist

OtherTextClassification
As a freelance AI Data Labeling Specialist, I was responsible for annotating and labeling datasets involving text classification, sentiment analysis, and image tagging. I reviewed and corrected mislabeled data, ensuring consistent and high-quality annotations to support machine learning model training. My adherence to strict annotation guidelines helped maintain uniformity across diverse datasets. • Labeled datasets for AI training tasks. • Performed quality checks and corrected data inconsistencies. • Managed workload to meet tight deadlines with high accuracy. • Supported model improvements through precise annotations.

As a freelance AI Data Labeling Specialist, I was responsible for annotating and labeling datasets involving text classification, sentiment analysis, and image tagging. I reviewed and corrected mislabeled data, ensuring consistent and high-quality annotations to support machine learning model training. My adherence to strict annotation guidelines helped maintain uniformity across diverse datasets. • Labeled datasets for AI training tasks. • Performed quality checks and corrected data inconsistencies. • Managed workload to meet tight deadlines with high accuracy. • Supported model improvements through precise annotations.

2024 - Present

Chatbot Training Dataset Project

OtherTextEntity Ner Classification
I contributed to a chatbot training dataset project by annotating over 5,000 conversational data points to improve response accuracy and overall user interaction quality. My work focused on classifying user intent and identifying key entities within text to support natural language processing (NLP) model training. I followed strict annotation guidelines to ensure consistency and high-quality outputs across the dataset. This helped improve the model’s ability to understand user queries, extract relevant information, and generate more accurate responses in real-world applications. • Labeled and structured large-scale conversational datasets • Classified user intents across diverse query types • Performed entity recognition to extract key information from text • Maintained high accuracy and consistency in annotations • Contributed to improving chatbot understanding and response quality

I contributed to a chatbot training dataset project by annotating over 5,000 conversational data points to improve response accuracy and overall user interaction quality. My work focused on classifying user intent and identifying key entities within text to support natural language processing (NLP) model training. I followed strict annotation guidelines to ensure consistency and high-quality outputs across the dataset. This helped improve the model’s ability to understand user queries, extract relevant information, and generate more accurate responses in real-world applications. • Labeled and structured large-scale conversational datasets • Classified user intents across diverse query types • Performed entity recognition to extract key information from text • Maintained high accuracy and consistency in annotations • Contributed to improving chatbot understanding and response quality

2024 - 2024

AI Trainer / Content Annotator

OtherTextEntity Ner Classification
At TechAssist Solutions, I worked as an AI Trainer and Content Annotator, providing structured data and feedback for model improvement. My responsibilities included annotating chatbot conversations and conducting quality assurance on labeled data. I also supported transcription projects involving speech-to-text dataset annotation. • Annotated user intents and entities in chatbot conversations. • Performed quality control and flagged dataset inconsistencies. • Contributed to speech-to-text training data preparation. • Enhanced the accuracy of natural language understanding models.

At TechAssist Solutions, I worked as an AI Trainer and Content Annotator, providing structured data and feedback for model improvement. My responsibilities included annotating chatbot conversations and conducting quality assurance on labeled data. I also supported transcription projects involving speech-to-text dataset annotation. • Annotated user intents and entities in chatbot conversations. • Performed quality control and flagged dataset inconsistencies. • Contributed to speech-to-text training data preparation. • Enhanced the accuracy of natural language understanding models.

2023 - 2023

Image Classification Project

OtherImageClassification
For the Image Classification Project, I tagged and categorized images to support object detection systems. High annotation accuracy and consistency were prioritized to improve model training outcomes. I maintained detailed annotation records and followed strict project guidelines. • Tagged objects and classified images for AI training datasets. • Maintained detailed documentation of dataset annotations. • Ensured annotation quality and consistency across images. • Followed established guidelines for image classification.

For the Image Classification Project, I tagged and categorized images to support object detection systems. High annotation accuracy and consistency were prioritized to improve model training outcomes. I maintained detailed annotation records and followed strict project guidelines. • Tagged objects and classified images for AI training datasets. • Maintained detailed documentation of dataset annotations. • Ensured annotation quality and consistency across images. • Followed established guidelines for image classification.

Not specified

Education

A

Anambra State University for Science and Technology

Bachelor of Engineering, Electrical and Electronics Engineering

Bachelor of Engineering
2020

Work History

B

BrightData Services

Data Entry & Quality Control Assistant

Lagos
2022 - 2023