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Chidera Maduka

Chidera Maduka

Video & Transcription Quality Evaluator — Project AdLoc — OneForma (Centific)

NIGERIA flag
Asaba, Nigeria
$20.00/hrExpertClickworkerOneformaToloka

Key Skills

Software

ClickworkerClickworker
OneFormaOneForma
TolokaToloka
TelusTelus
Internal/Proprietary Tooling

Top Subject Matter

AI video and speech datasets
NLP language model datasets
General AI training datasets

Top Data Types

AudioAudio
ImageImage
TextText
VideoVideo

Top Label Types

Entity Ner Classification
Evaluation Rating
Fine Tuning
Object Detection
Prompt Response Writing SFT
Data Collection
Classification
Audio Recording

Freelancer Overview

Video & Transcription Quality Evaluator — Project AdLoc — OneForma (Centific). Core strengths include OneForma, Silencio, and ATLAS Capture. AI-training focus includes data types such as Video, Text, and Audio and labeling workflows including Evaluation, Rating, and Data Collection.

ExpertEnglish

Labeling Experience

SAHARA AI

Internal Proprietary ToolingTextEntity Ner Classification
Scope: Annotated and labeled text datasets to support AI model development; contributed to multiple projects with hundreds of data entries. Tasks Performed: Classified text, tagged relevant features, and ensured consistency across datasets. Project Size: Large-scale, hundreds to thousands of entries per project cycle. Quality Measures: Followed internal guidelines, performed quality checks, and ensured high accuracy for AI training purposes.

Scope: Annotated and labeled text datasets to support AI model development; contributed to multiple projects with hundreds of data entries. Tasks Performed: Classified text, tagged relevant features, and ensured consistency across datasets. Project Size: Large-scale, hundreds to thousands of entries per project cycle. Quality Measures: Followed internal guidelines, performed quality checks, and ensured high accuracy for AI training purposes.

2025 - 2025

Field Data Collector & Video Annotator — ATLAS AI (atlascapture.io)

Data Collection
In this dual role, I collected real-world geospatial field data, including location imagery, and annotated video data for AI model training. Tasks involved on-site data verification and video labeling for accurate timing alignment and label precision. My actions contributed to high-quality datasets supporting geospatial AI development. • Gathered location and environmental imagery • Verified real-world data accuracy • Labeled video content for AI use • Maintained timing and label assignment standards

In this dual role, I collected real-world geospatial field data, including location imagery, and annotated video data for AI model training. Tasks involved on-site data verification and video labeling for accurate timing alignment and label precision. My actions contributed to high-quality datasets supporting geospatial AI development. • Gathered location and environmental imagery • Verified real-world data accuracy • Labeled video content for AI use • Maintained timing and label assignment standards

2023 - 2023

Multilingual Speech Data Collector — Silencio Voice AI

AudioAudio Recording
As a multilingual speech data collector, I recorded and submitted accurate voice samples for use in AI speech and language model training. I ensured proper pronunciation and high audio quality throughout all recordings. My work expanded the linguistic diversity and utility of the voice dataset for AI. • Prepared and recorded speech in multiple languages • Delivered clear, clean audio samples • Adhered to pronunciation and data quality guidelines • Supported wide-ranging AI speech model development

As a multilingual speech data collector, I recorded and submitted accurate voice samples for use in AI speech and language model training. I ensured proper pronunciation and high audio quality throughout all recordings. My work expanded the linguistic diversity and utility of the voice dataset for AI. • Prepared and recorded speech in multiple languages • Delivered clear, clean audio samples • Adhered to pronunciation and data quality guidelines • Supported wide-ranging AI speech model development

2023 - 2023
OneForma

General Data Annotation — OneForma (Centific)

OneformaTextClassification
In this position, I performed data labeling and annotation for various AI training datasets. My responsibilities included ensuring thorough quality checks and maintaining high accuracy standards. The role contributed to assembling reliable datasets for AI applications. • Labeled and annotated diverse text data • Enforced accuracy and labeling consistency • Participated in thorough quality reviews • Contributed to dataset reliability for AI use cases

In this position, I performed data labeling and annotation for various AI training datasets. My responsibilities included ensuring thorough quality checks and maintaining high accuracy standards. The role contributed to assembling reliable datasets for AI applications. • Labeled and annotated diverse text data • Enforced accuracy and labeling consistency • Participated in thorough quality reviews • Contributed to dataset reliability for AI use cases

2023 - 2023
OneForma

Text Data Contributor — Polaris Project — OneForma (Centific)

OneformaTextData Collection
As a text data contributor, I provided structured personal texts such as messaging exchanges, emails, and notes for NLP model training. I followed strict project guidelines to maximize consistency and data quality for AI language model development. My contributions ensured a rich dataset of realistic text for machine learning algorithms. • Submitted messaging, email, and note samples • Followed detailed project instructions • Focused on data diversity and privacy • Enhanced language model robustness

As a text data contributor, I provided structured personal texts such as messaging exchanges, emails, and notes for NLP model training. I followed strict project guidelines to maximize consistency and data quality for AI language model development. My contributions ensured a rich dataset of realistic text for machine learning algorithms. • Submitted messaging, email, and note samples • Followed detailed project instructions • Focused on data diversity and privacy • Enhanced language model robustness

2023 - 2023

Education

E

Ebonyi State University

Bachelor of Science, Physiology

Bachelor of Science
2018 - 2022

Work History

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