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Dorcas Zakari

Dorcas Zakari

Data Labeling & AI Training Specialist

Ghana flagAccra, Ghana
$15.00/hrExpertLabelboxScale AILabel Studio

Key Skills

Software

LabelboxLabelbox
Scale AIScale AI
Label StudioLabel Studio
ProdigyProdigy
ArgillaArgilla

Top Subject Matter

AI Training
Data Annotation
Model Evaluation

Top Data Types

TextText
DocumentDocument
AudioAudio

Top Task Types

ClassificationClassification
Entity (NER) ClassificationEntity (NER) Classification
RLHFRLHF
Question AnsweringQuestion Answering
Evaluation/RatingEvaluation/Rating

Freelancer Overview

Data Labeling & AI Training Specialist with 3+ years of experience in high-precision workflows and data integrity. I specialize in Text Classification, RLHF, and Intent Analysis, bringing a "zero-error" mindset from my backgrounds in laboratory science and digital analytics. I am an expert at following complex guidelines to identify subtle edge cases that improve model factuality and safety. Currently pursuing a BSc in Applied Business Management at BYU-Idaho, I combine academic rigor with professional expertise in proprietary annotation tools. I am dedicated to delivering high-volume, production-grade datasets with the superior accuracy scores required for advanced LLM development.

ExpertEnglishYoruba

Labeling Experience

Multi-Modal Text Evaluation & RLHF Quality Assurance

TextRLHF
Performed sentiment analysis, text classification, and named entity recognition (NER) for various data labeling projects, with additional experience in ranking and comparison tasks. Evaluated model responses for factuality, safety, coherence, and verbosity as part of reinforcement learning from human feedback (RLHF). Ensured strict guideline adherence and edge-case identification to maintain high-quality annotated datasets. Specialized in multi-label text categorization and accuracy validation. Applied guideline-driven analysis to diverse text datasets. Conducted model evaluation using RLHF best practices. Ensured high-volume, detail-oriented data verification with a focus on 99% accuracy.

Performed sentiment analysis, text classification, and named entity recognition (NER) for various data labeling projects, with additional experience in ranking and comparison tasks. Evaluated model responses for factuality, safety, coherence, and verbosity as part of reinforcement learning from human feedback (RLHF). Ensured strict guideline adherence and edge-case identification to maintain high-quality annotated datasets. Specialized in multi-label text categorization and accuracy validation. Applied guideline-driven analysis to diverse text datasets. Conducted model evaluation using RLHF best practices. Ensured high-volume, detail-oriented data verification with a focus on 99% accuracy.

2020 - 2023

Education

B

Brigham Young University–Idaho

Bachelor of Science, Applied Business Management

Bachelor of Science
2023 - 2026

Work History

S

Stanioch Ghana Limited

Digital Marketing Specialist Intern

Accra
2020 - 2021
C

Cyrex Modern Care Ventures

Laboratory Assistant

Accra
2015 - 2017