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J

Jojo

Freelance Data Analyst & AI Data Annotator - Text Annotation

NIGERIA flag
Lagos, Nigeria
$12.00/hrExpertOtherClickworkerCloudfactory

Key Skills

Software

Other
ClickworkerClickworker
CloudFactoryCloudFactory
CrowdSourceCrowdSource
CVATCVAT
Data Annotation TechData Annotation Tech
iMeritiMerit
LabelboxLabelbox
LionbridgeLionbridge
MercorMercor
Micro1
MindriftMindrift
OneFormaOneForma
OpenCV AI Kit (OAK)OpenCV AI Kit (OAK)
TelusTelus
AppenAppen
RoboflowRoboflow
Anno-MageAnno-Mage
DatumboxDatumbox
DatasaurDatasaur
Figure EightFigure Eight
ArgillaArgilla
Axiom AI

Top Subject Matter

AI/NLP/Data Science
Speech/asr/ai Domain Expertise
Video Analytics/Computer Vision/AI

Top Data Types

TextText
AudioAudio
DocumentDocument

Top Task Types

Entity Ner Classification
Transcription
Object Detection
Bounding Box
Polygon
Segmentation
Classification
Cuboid
Text Generation
Question Answering
Text Summarization
Fine Tuning
Red Teaming
Evaluation Rating
Data Collection
Prompt Response Writing SFT

Freelancer Overview

Freelance Data Analyst & AI Data Annotator - Text Annotation. Core strengths include Other. Education includes Bachelor of Science, N/A (2021). AI-training focus includes data types such as Text, Audio, and Video and labeling workflows including Entity (NER) Classification, Transcription, and Object Detection.

ExpertEnglishFrench

Labeling Experience

Freelance Data Analyst & AI Data Annotator - Video Annotation

OtherVideoObject Detection
During my engagement as a Data Annotator, I was tasked with video label annotation, object detection, and activity recognition. I utilized video frame annotation tools to identify and tag objects and actions at a granular level. All work was completed per client instructions, ensuring dataset usability for training computer vision models. • Labeled objects in videos using frame-level annotation. • Conducted activity and action recognition tasks. • Maintained precise annotation under strict deadlines. • Supported model improvement via frame-level accuracy.

During my engagement as a Data Annotator, I was tasked with video label annotation, object detection, and activity recognition. I utilized video frame annotation tools to identify and tag objects and actions at a granular level. All work was completed per client instructions, ensuring dataset usability for training computer vision models. • Labeled objects in videos using frame-level annotation. • Conducted activity and action recognition tasks. • Maintained precise annotation under strict deadlines. • Supported model improvement via frame-level accuracy.

2021 - Present

Freelance Data Analyst & AI Data Annotator - Audio Transcription

OtherAudioTranscription
In this role, I performed audio transcription, speaker segmentation, and timestamp alignment for large datasets. The transcriptions were prepared for machine learning training, with careful attention to accuracy and linguistic detail. Quality checks and reviews were conducted to ensure consistent results. • Managed audio data with challenging accents and dialects. • Segmented speakers and created time-aligned transcriptions. • Reviewed peer transcriptions for QA and inter-annotator agreement. • Facilitated high-quality ASR annotation for AI models.

In this role, I performed audio transcription, speaker segmentation, and timestamp alignment for large datasets. The transcriptions were prepared for machine learning training, with careful attention to accuracy and linguistic detail. Quality checks and reviews were conducted to ensure consistent results. • Managed audio data with challenging accents and dialects. • Segmented speakers and created time-aligned transcriptions. • Reviewed peer transcriptions for QA and inter-annotator agreement. • Facilitated high-quality ASR annotation for AI models.

2021 - Present

Freelance Data Analyst & AI Data Annotator - Text Annotation

OtherTextEntity Ner Classification
As a Freelance Data Analyst & AI Data Annotator, I labeled and validated text datasets for various AI training purposes. This included sentiment analysis, intent identification, entity recognition, and semantic categorization under strict project guidelines and QA benchmarks. My work consistently achieved high accuracy rates and contributed to robust AI model development. • Conducted sentiment and intent classification on textual data. • Performed entity recognition and semantic categorization tasks. • Consistently maintained labeling accuracy above 98%. • Adhered to detailed project guidelines for annotation quality.

As a Freelance Data Analyst & AI Data Annotator, I labeled and validated text datasets for various AI training purposes. This included sentiment analysis, intent identification, entity recognition, and semantic categorization under strict project guidelines and QA benchmarks. My work consistently achieved high accuracy rates and contributed to robust AI model development. • Conducted sentiment and intent classification on textual data. • Performed entity recognition and semantic categorization tasks. • Consistently maintained labeling accuracy above 98%. • Adhered to detailed project guidelines for annotation quality.

2021 - Present

Education

O

Open University of Nigeria

Bachelor of Science, Data Science

Bachelor of Science
2021 - 2024

Work History

W

Web3 Flux

Social media manager

Lagos
2018 - 2020