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Marina Ershova

AI Data Annotator (Linguistics/NLP)

Russia flagSt Petersburg, Russia
$35.00/hrIntermediateLabelboxSuperannotate

Key Skills

Software

LabelboxLabelbox
SuperAnnotateSuperAnnotate

Top Subject Matter

NLP
Generative AI

Top Data Types

TextText

Top Task Types

Entity (NER) ClassificationEntity (NER) Classification

Freelancer Overview

I have over 4 years of experience in QA and AI-related workflows, with a strong focus on data labeling, content evaluation, and quality control. In my role, I regularly reviewed large-scale datasets (500+ items per day), ensuring accuracy, consistency, and logical coherence across AI-generated and human-labeled content. I am experienced in identifying subtle errors, inconsistencies, and edge cases, and in applying detailed guidelines and evaluation criteria to maintain high-quality outputs. My background in linguistics (Bachelor’s degree in English) and advanced English proficiency (C1–C2), combined with my current experience teaching English, allows me to work confidently with language nuance, clarity, and structure. I have hands-on experience using AI/LLM tools for content analysis and improvement, and I am comfortable providing clear, structured feedback to enhance model performance. I am highly detail-oriented, reliable in repetitive high-volume tasks, and able to work independently while maintaining consistent quality.

IntermediateEnglishRussian

Labeling Experience

Ai trainer

TextEntity Ner Classification
Project: Acronym Disambiguation for AI Model Training (Droice Labs) Role: Linguistic Data Annotator Objective: Improve the AI's accuracy in interpreting acronyms by disambiguating their meanings based on context. Key Responsibilities: Acronym Identification & Annotation: Identifying acronyms in text and tagging their meanings according to the context (e.g., "AI" as "Artificial Intelligence" or "Active Ingredient"). Contextual Analysis: Analyzing surrounding text to ensure accurate interpretation of acronyms in different fields. Quality Assurance: Ensuring correctness and consistency of annotations to enhance model training. Team Collaboration: Working with other annotators and engineers to refine guidelines and resolve ambiguous cases. Feedback for Model Improvement: Providing constructive feedback to improve the model's understanding of acronyms. Productivity: Handling large volumes of data (500+ items daily) while maintaining high accuracy standards. Outcome: My contribution helped enhance the AI's ability to correctly interpret acronyms, improving the model's performance in natural language processing tasks.

Project: Acronym Disambiguation for AI Model Training (Droice Labs) Role: Linguistic Data Annotator Objective: Improve the AI's accuracy in interpreting acronyms by disambiguating their meanings based on context. Key Responsibilities: Acronym Identification & Annotation: Identifying acronyms in text and tagging their meanings according to the context (e.g., "AI" as "Artificial Intelligence" or "Active Ingredient"). Contextual Analysis: Analyzing surrounding text to ensure accurate interpretation of acronyms in different fields. Quality Assurance: Ensuring correctness and consistency of annotations to enhance model training. Team Collaboration: Working with other annotators and engineers to refine guidelines and resolve ambiguous cases. Feedback for Model Improvement: Providing constructive feedback to improve the model's understanding of acronyms. Productivity: Handling large volumes of data (500+ items daily) while maintaining high accuracy standards. Outcome: My contribution helped enhance the AI's ability to correctly interpret acronyms, improving the model's performance in natural language processing tasks.

2020 - 2020

Education

S

Saint Petersburg State University

master, IT in linguistics

master
2015 - 2017

Work History

D

Droice Labs

NLP Engineer

Moscow
2017 - 2024