Data Annotation Contributor (Freelance)
As a freelance Data Annotation Contributor for OpenTrain AI and similar platforms, I performed structured content analysis and AI training data preparation. My primary focus was text classification, named entity recognition, sentiment labeling, text summarization, and RLHF-style evaluation of AI responses. I specialized in annotating scientific and STEM content to reduce error rates on domain-specific tasks. • Annotated over 500 diverse text datasets for classification, NER, and sentiment analysis. • Evaluated AI-generated responses for accuracy, adherence to instruction, helpfulness, and safety via RLHF-style tasks. • Maintained over 98% annotation accuracy through careful quality self-review. • Leveraged M.Sc. Physics expertise to excel in STEM-focused annotation projects.