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Royrobert Costa

Royrobert Costa

Freelance Data Annotation Specialist

USA flagUsa
ExpertLabelbox

Key Skills

Software

LabelboxLabelbox

Top Subject Matter

Nlp Domain Expertise
Sentiment Analysis
Computer Vision

Top Data Types

TextText
ImageImage
DocumentDocument

Top Task Types

ClassificationClassification

Freelancer Overview

Freelance Data Annotation Specialist. Core strengths include Labelbox. Education includes Bachelor of Science, University of Hertfordshire (2020). AI-training focus includes data types such as Text and labeling workflows including Classification.

Expert

Labeling Experience

Labelbox

Freelance Data Annotation Specialist

LabelboxTextClassification
Delivered high-accuracy annotation for text, image, and audio datasets supporting AI and ML applications. Enhanced machine learning model performance by ensuring consistent and precise labeling standards. Specialized in multilingual annotation, sentiment analysis, and large-scale dataset validation across NLP, computer vision, and classification projects. • Achieved and maintained over 98% annotation accuracy with strict QA benchmarks • Utilized Labelbox and CVAT for workflow management and large-scale data handling • Developed improved annotation workflows, reducing time and increasing consistency • Collaborated closely with data scientists to refine guidelines and reduce dataset ambiguity

Delivered high-accuracy annotation for text, image, and audio datasets supporting AI and ML applications. Enhanced machine learning model performance by ensuring consistent and precise labeling standards. Specialized in multilingual annotation, sentiment analysis, and large-scale dataset validation across NLP, computer vision, and classification projects. • Achieved and maintained over 98% annotation accuracy with strict QA benchmarks • Utilized Labelbox and CVAT for workflow management and large-scale data handling • Developed improved annotation workflows, reducing time and increasing consistency • Collaborated closely with data scientists to refine guidelines and reduce dataset ambiguity

2021 - Present

Education

U

University of Hertfordshire

Bachelor of Science, Information Technology

Bachelor of Science
2020 - 2020

Work History

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Royrobert C. hasn’t added any Work History to their OpenTrain profile yet.