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Chukwu Raphael

Chukwu Raphael

AI Trainer | Data Annotation Specialist | NLP & Model Evaluation

NIGERIA flag
Abakaliki, Nigeria
$10.00/hrIntermediateScale AI

Key Skills

Software

Scale AIScale AI

Top Subject Matter

No subject matter listed

Top Data Types

TextText

Top Label Types

Classification
Text Summarization

Freelancer Overview

I am a detail-oriented Computer Science graduate with a strong passion for Artificial Intelligence, specializing in data annotation, labeling, and AI model training. My hands-on experience includes labeling and categorizing datasets to enhance model accuracy, designing and optimizing prompts to improve AI responses, and providing structured feedback to refine chatbot outputs. I am skilled in Python, prompt engineering, and machine learning fundamentals, and I excel at identifying and correcting inaccuracies or biases in AI-generated data. I am eager to contribute my critical thinking, problem-solving abilities, and attention to detail to innovative AI teams focused on developing intelligent systems.

IntermediateEnglishIgbo

Labeling Experience

Scale AI

Prompt Engineering Practice

Scale AITextClassificationText Summarization
Worked on optimizing prompts and evaluating AI responses for clarity, accuracy, and bias.

Worked on optimizing prompts and evaluating AI responses for clarity, accuracy, and bias.

2024
Scale AI

AI Data Annotation & Model Evaluation Project

Scale AITextClassificationAction Recognition
Performed text data annotation and response evaluation for AI language models. Reviewed AI-generated outputs for accuracy, bias, and relevance. Provided structured feedback to improve model performance and ensure high-quality training data. Followed strict quality guidelines and maintained consistency across labeling tasks.

Performed text data annotation and response evaluation for AI language models. Reviewed AI-generated outputs for accuracy, bias, and relevance. Provided structured feedback to improve model performance and ensure high-quality training data. Followed strict quality guidelines and maintained consistency across labeling tasks.

2024

Education

F

Federal University Ndufu-Alike (FUNAI)

Bachelor of Science, Computer Science

Bachelor of Science
2019 - 2023

Work History

F

Freelance / Self-Employed

AI Trainer / Data Annotator

Abakaliki
2024 - Present