o
obeng_mensah

Obeng M. Enoch

@obeng_mensah

Data Scientist and Annotation Specialist

Gana
Inglês, Axante
Algumas informações são exibidas no idioma inglês.
Sobre mim
I am a results-driven Data Scientist and Data Annotation Specialist with practical experience in data cleaning, analysis, visualization, and AI dataset preparation. I help clients transform raw data into meaningful insights using tools such as Excel, Google Sheets, SQL, and Python. My expertise includes exploratory data analysis (EDA), data formatting, reporting, and quality assurance. I also bring extensive experience in annotation, and transcription, ensuring high-quality datasets for machine learning applications. Accuracy, attention to detail, and timely delivery are my top priorities.... Saiba mais

Habilidades

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obeng_mensah
Obeng M. Enoch
offline • 

Conheça meus serviços

BI Analytics
I will build an end to end data pipeline and analytics dashboard
A partir deUS$ 20 /projetoMais detalhes

Portfólio

Experiência profissional

Data Annotation Specialist

DataPLus • Freelance

Mar 2025 - Present • 1 yr 8 mos

2D & 3D Bounding Box Annotation ● Annotated 200,000+ 2D and 3D bounding boxes across vehicles, pedestrians, objects, and environmental structures with 99% accuracy. ● Reviewed and quality-checked 400,000+ annotations, ensuring compliance with strict annotation guidelines with 99% accuracy ● Worked with tools for frame-by-frame labeling, object tracking, and precision box alignment. ● Trained more than 20 people on this project. Video Annotation & Review ● Performed object tracking, movement labeling, and event identification in 2D video datasets. ● Reviewed team submissions, corrected inconsistencies, and flagged annotation errors to improve dataset quality. Point Cloud Annotation (LiDAR) ● Annotated undrivable areas, uneven terrains, construction zones, and obstacle regions in 3D LiDAR scans. ● Applied segmentation, region marking, and environment classification techniques used in autonomous driving datasets. Audio & Text Tasks – English Transcription ● Produced accurate English transcriptions with strong listening skills and strict adherence to formatting standards. Quality Assurance & Leadership ● Reviewed and quality-checked 200,000+ annotations, maintaining a 99% compliance rate. ● Trained and supervised 20+ annotators, improving labeling accuracy, guideline adherence, and task turnaround time. ● Provided feedback on edge cases and annotation ambiguities to improve team performance.

Data Analyst

Confucius Institute at the University of Ghana • Período integral

Oct 2024 - Sep 2025 • 11 mos

Conducted data-driven research using statistical and analytical tools to support insitutional decision-making Developed daily reports on reserach findings, helping improve academic and administrative efficiency. Assisted teachers by recording and analyzing students' marks to evaluate performance trends using Excel, SQL, and Power BI. Developed Google Forms to track attendance and gather on visitors' data, improving data collection and report processes. Leveraged data analysis to support informed decision-making and enhance the insititute's orgnizational efficiency.