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Calistus Ogbodo

Calistus Ogbodo

Data Annotator

Nigeria flagIbadan, Nigeria
$15.00/hrIntermediateAppenClickworker

Key Skills

Software

AppenAppen
ClickworkerClickworker

Top Subject Matter

No subject matter listed

Top Data Types

DocumentDocument
ImageImage
TextText

Top Task Types

Classification
Evaluation Rating
Segmentation

Freelancer Overview

I have hands-on experience in data labeling and the preparation of AI training data, with a strong emphasis on ensuring data quality, accuracy, and consistency across various projects. My background includes working with both structured and unstructured datasets, where I applied techniques such as annotation, categorization, text tagging, and validation to create reliable datasets for machine learning models. I am skilled in following annotation guidelines, maintaining attention to detail, and utilizing tools like Excel, Google Sheets, and labeling platforms to streamline the process. I possess strong analytical skills gained from my experience in data analysis and machine learning, which enable me to recognize the critical role of clean, well-labeled data in developing effective models. My work on projects involving classification, natural language processing, and supervised learning has taught me how mislabeled data can negatively affect model performance.

IntermediateIgbo

Labeling Experience

No Data Labeling experience added

Calistus O. hasn’t added any AI Training or Data Labeling experience to their OpenTrain profile yet.

Education

G

Google

Certification, Advanced Data Analytics Certificate

Certification
2025 - 2025
G

Google

Certification, Data Analytics Professional Certificate

Certification
2024 - 2025

Work History

A

Appen Crowd Projects

Content Moderator

Bellevue
2023 - Present
G

Globalkonnet

Search Performance Analyst

Ibadan
2025 - 2025