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S
Sylvia

Sylvia

Data Annotation Specialist (Freelance)

Nigeria flagLagos, Nigeria

Key Skills

Software

CVATCVAT
LabelboxLabelbox
AppenAppen
ClickworkerClickworker
iMeritiMerit
LionbridgeLionbridge
OneFormaOneForma
TelusTelus
TolokaToloka

Top Subject Matter

AI training data for machine learning models
AI-enabled video platforms
Audio data for speech recognition AI models

Top Data Types

TextText
VideoVideo
AudioAudio
ImageImage
DocumentDocument

Top Task Types

Entity (NER) ClassificationEntity (NER) Classification
ClassificationClassification
TranscriptionTranscription
Bounding BoxBounding Box
SegmentationSegmentation
Text GenerationText Generation
Question AnsweringQuestion Answering
Text SummarizationText Summarization
Evaluation/RatingEvaluation/Rating
Data CollectionData Collection
Prompt + Response Writing (SFT)Prompt + Response Writing (SFT)
Object DetectionObject Detection

Freelancer Overview

Data Annotation Specialist (Freelance). Brings 2+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include CVAT and Labelbox. Education includes Bachelor of Science, N/A (2020). AI-training focus includes data types such as Text, Video, and Audio and labeling workflows including Entity (NER) Classification, Classification, and Transcription.

Labeling Experience

CVAT

Data Annotation Specialist (Freelance)

CVATCVATImageImageBounding BoxBounding Box

I annotated images with bounding boxes and polygons to facilitate computer vision model training. I was responsible for ensuring detailed and consistent image annotations under specified guidelines. My work contributed to the enhancement of AI object detection and image recognition systems. • Annotated images with bounding boxes and polygons. • Implemented precise image segmentation. • Maintained accurate labeling per guidelines. • Contributed to computer vision dataset quality and usability.

2022 - 2022
CVAT

Data Annotation Specialist (Freelance)

CVATCVATAudioAudioTranscriptionTranscription

I transcribed audio content and evaluated the accuracy of speech-to-text data for use in machine learning models. I ensured the precision and reliability of annotated audio data for downstream AI tasks. I participated in the quality control process for audio transcription and labeling. • Annotated and transcribed audio content. • Conducted quality checks on transcribed data. • Maintained high accuracy standards for annotated audio datasets. • Provided input for continuous improvement of AI models relying on audio data.

2022 - 2022
CVAT

Data Annotation Specialist (Freelance)

CVATCVATVideoVideoClassificationClassification

In this role, I evaluated videos across various platforms to gauge user engagement and preferences. I tagged and categorized video content accurately to aid AI-driven content recommendation systems. I contributed to the overall performance and accuracy of video-based AI models. • Tagged and classified video content. • Evaluated video content for user engagement and preferences. • Ensured data consistency and quality through regular checks. • Provided feedback on content categorization for system improvements.

2022 - 2022
CVAT

Data Annotation Specialist (Freelance)

CVATCVATTextTextEntity (NER) ClassificationEntity (NER) Classification

As a Data Annotation Specialist, I was responsible for analyzing and labeling textual data. I provided accurately categorized and annotated information to support machine learning model development. I validated model outputs and ensured that the training data met high quality standards. • Identified and labeled named entities in text. • Assessed content to meet quality standards and user intent. • Contributed to machine learning model reliability. • Maintained accuracy and consistency throughout the annotation process.

2022 - 2022

Education

N

N/A

Bachelor of Science, Economics and Statistics

Bachelor of Science
2016 - 2020

Work History

F

Freelance

Data Analyst

Lagos
2021 - 2022