Chizobam Robert

Key Skills

Software

Mindrift

Appen

Top Subject Matter

No subject matter listed

Top Data Types

Audio

Document

Image

Text

Top Label Types

Action Recognition

Audio Recording

Bounding Box

Cuboid

Evaluation Rating

Freelancer Overview

AI training specialist with experience in data annotation, labelling, and egocentric video data collection for robotics and computer vision models. My background includes annotating text for classification, sentiment analysis, and object detection, as well as evaluating search engine results and AI model outputs for safety, accuracy, and relevance. I have worked on projects supporting LLM improvement, content moderation, and compliance review, ensuring high-quality data for machine learning system.

Labeling Experience

Data Annotator/QA Expert

MindriftTextClassification

As a Data Annotator/QA Expert at Mindrift, I performed data labeling for machine learning models, improving model safety and accuracy. My tasks included annotating data for text classification, object detection, and sentiment analysis, and comparing AI responses for safety, helpfulness, and factuality. I evaluated and reviewed product data to ensure accurate category placement and improved search engine results for algorithm enhancement. • Annotated, classified, and evaluated various text data types for AI model training. • Verified alignment of shopping website products to correct categories. • Performed pair-wise search engine result evaluation for algorithm optimization. • Ensured annotation quality met project standards and requirements.

As a Data Annotator/QA Expert at Mindrift, I performed data labeling for machine learning models, improving model safety and accuracy. My tasks included annotating data for text classification, object detection, and sentiment analysis, and comparing AI responses for safety, helpfulness, and factuality. I evaluated and reviewed product data to ensure accurate category placement and improved search engine results for algorithm enhancement. • Annotated, classified, and evaluated various text data types for AI model training. • Verified alignment of shopping website products to correct categories. • Performed pair-wise search engine result evaluation for algorithm optimization. • Ensured annotation quality met project standards and requirements.

2023 - 2025

AI Data Rater/Transcription Specialist

AppenTextEvaluation Rating

As an AI Data Rater/Transcription Specialist with Crowdgen (Appen), I supported LLM improvement tasks through prompt evaluation and search relevance scoring. I analyzed multimedia content to validate accuracy, sentiment, and policy adherence, while also transcribing complex audio materials. My linguistic knowledge enhanced the quality of data annotation, translation, and digital safety compliance. • Performed rating, scoring, and evaluation of search engine and prompt results. • Transcribed diverse audio data, including interviews and academic content. • Analyzed sentiment, intent, and correctness in multimedia data outputs. • Provided linguistic and cultural insights vital for accurate annotation.

As an AI Data Rater/Transcription Specialist with Crowdgen (Appen), I supported LLM improvement tasks through prompt evaluation and search relevance scoring. I analyzed multimedia content to validate accuracy, sentiment, and policy adherence, while also transcribing complex audio materials. My linguistic knowledge enhanced the quality of data annotation, translation, and digital safety compliance. • Performed rating, scoring, and evaluation of search engine and prompt results. • Transcribed diverse audio data, including interviews and academic content. • Analyzed sentiment, intent, and correctness in multimedia data outputs. • Provided linguistic and cultural insights vital for accurate annotation.

2021 - 2023

Education

Work History