Valentine W.

Key Skills

Software

CVAT

Top Subject Matter

Natural language processing (NLP) dataset annotation

Top Data Types

Text

Image

Top Task Types

Entity (NER) Classification

Freelancer Overview

AI Data Trainer / Annotation Specialist (Freelance / Remote). Brings 3+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include CVAT. Education includes Bachelor of Science, Mount Kenya University (2022). AI-training focus includes data types such as Text and labeling workflows including Entity (NER) Classification.

Labeling Experience

AI Data Trainer / Annotation Specialist (Freelance / Remote)

CVATTextEntity (NER) Classification

Served as an AI Data Trainer / Annotation Specialist, creating and annotating labeled datasets to train NLP models using text-based inputs. Conducted masking and labeling for large-scale text datasets while following annotation guidelines. Performed data quality checks to improve model training accuracy and reduce labeling errors. • Annotated text datasets for NLP training. • Applied masking during the labeling process. • Performed QA and guideline validation checks. • Collaborated with ML engineers to refine annotation guidelines.

2024 - Present

Education

Work History