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Josephine Akpevwe Tadaferua

Josephine Akpevwe Tadaferua

AI Data Annotator - Machine Learning

UNITED_KINGDOM flag
Hull, United Kingdom
$20.00/hrIntermediateLabel Studio

Key Skills

Software

Label StudioLabel Studio

Top Subject Matter

No subject matter listed

Top Data Types

TextText

Top Label Types

Entity Ner Classification

Freelancer Overview

I am an experienced data annotator and data analyst with a strong background in supporting AI and machine learning projects through high-quality data labeling and annotation. I have worked extensively with platforms such as Label Studio, Surge AI, Labelbox, and Datasaur, delivering image and text classification, entity recognition, and sentiment analysis tasks with accuracy rates of up to 99%. My expertise covers NLP and computer vision domains, where I have processed and validated tens of thousands of data points, optimized annotation workflows for greater efficiency, and provided structured feedback to improve model performance and labeling standards. I am skilled in Python, SQL, Power BI, Excel, and Tableau, and bring a detail-oriented, reliable, and collaborative approach to every project, ensuring both data quality and compliance with project requirements.

IntermediateEnglishYoruba

Labeling Experience

Label Studio

NLP Text Classification & Entity Recognition Training Project

Label StudioTextEntity Ner Classification
I completed a structured, self-directed AI data labeling training project focused on both text classification and named entity recognition (NER). The project involved annotating over 3,000 short text samples covering topics such as sentiment, intent, and general subject classification. I also performed NER tagging for people, locations, and organizations while adhering to clear labeling rules and entity boundary guidelines. Throughout the project, I followed detailed annotation instructions, documented edge cases, and performed periodic quality checks to ensure consistent and accurate labeling. I used platform features such as taxonomy setup, span selection, and label validation tools to maintain a high-quality dataset suitable for LLM training and evaluation. This project strengthened my ability to interpret guidelines, manage annotation workflow efficiently, and deliver high-quality, reliable training data.

I completed a structured, self-directed AI data labeling training project focused on both text classification and named entity recognition (NER). The project involved annotating over 3,000 short text samples covering topics such as sentiment, intent, and general subject classification. I also performed NER tagging for people, locations, and organizations while adhering to clear labeling rules and entity boundary guidelines. Throughout the project, I followed detailed annotation instructions, documented edge cases, and performed periodic quality checks to ensure consistent and accurate labeling. I used platform features such as taxonomy setup, span selection, and label validation tools to maintain a high-quality dataset suitable for LLM training and evaluation. This project strengthened my ability to interpret guidelines, manage annotation workflow efficiently, and deliver high-quality, reliable training data.

2025 - 2025

Education

U

University of Hull

Master of Science, Data Science and Artificial Intelligence

Master of Science
2024 - 2025
D

Delta State University, Abraka

Bachelor of Science, Library and Information Science

Bachelor of Science
2014 - 2018

Work History

R

RWS

AI Data Annotator

United States
2025 - Present
M

Mercor

AI Data Annotator

Chicago
2025 - 2025