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Yossi Apeji

Research Assistant – Data Cleaning and Annotation (Peer-Reviewed Publication)

United Kingdom flagLagos, United Kingdom
$20.00/hrIntermediateOther

Key Skills

Software

Other

Top Subject Matter

Economics Domain Expertise
Academic Research
Causal Inference

Top Data Types

TextText

Top Task Types

ClassificationClassification

Freelancer Overview

Research Assistant – Data Cleaning and Annotation (Peer-Reviewed Publication). Brings 8+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other. Education includes Doctor of Philosophy, City, University of London (2025) and Master of Science, Girne American University (2017). AI-training focus includes data types such as Text and labeling workflows including Classification, Evaluation, and Rating.

IntermediateEnglish

Labeling Experience

Data Labeller

TextPrompt Response Writing SFT
Writing prompts in 4 - 6 to six turns and Identify the model that is better by selecting weaknesses

Writing prompts in 4 - 6 to six turns and Identify the model that is better by selecting weaknesses

2026 - Present

PhD Candidate – Microdata Annotation and Evaluation

OtherText
Applied difference-in-differences methodology to large administrative microdata, requiring design and evaluation of synthetic counterfactual scenarios. Systematically assessed outputs of economic models against rigorous academic criteria. Created annotated datasets for causal inference and quality evaluation in AI-supported econometric research. • Built evaluation protocols for microdata output quality • Specified annotation requirements and conditions in research workflows • Reviewed outputs for accuracy and compliance with research standards • Automated aspects of the evaluation process using structured tools

Applied difference-in-differences methodology to large administrative microdata, requiring design and evaluation of synthetic counterfactual scenarios. Systematically assessed outputs of economic models against rigorous academic criteria. Created annotated datasets for causal inference and quality evaluation in AI-supported econometric research. • Built evaluation protocols for microdata output quality • Specified annotation requirements and conditions in research workflows • Reviewed outputs for accuracy and compliance with research standards • Automated aspects of the evaluation process using structured tools

2025 - Present

Research Assistant – Data Cleaning and Annotation (Peer-Reviewed Publication)

OtherTextClassification
Conducted detailed econometric analysis involving systematic identification and classification of data inconsistencies. Led data cleaning, regression modeling, and robustness checks on large-scale, complex text datasets. Developed quality assessment criteria for consistency and reliability in annotated output. • Designed annotation protocols for structured economic datasets • Identified and corrected labeling errors using manual and automated checks • Applied advanced econometric models to classified text data • Ensured data integrity through rigorous review processes

Conducted detailed econometric analysis involving systematic identification and classification of data inconsistencies. Led data cleaning, regression modeling, and robustness checks on large-scale, complex text datasets. Developed quality assessment criteria for consistency and reliability in annotated output. • Designed annotation protocols for structured economic datasets • Identified and corrected labeling errors using manual and automated checks • Applied advanced econometric models to classified text data • Ensured data integrity through rigorous review processes

2016 - 2017

Education

G

Girne American University

Master of Science, Economics

Master of Science
2017 - 2017
A

Ahmadu Bello University

Bachelor of Science, Economics

Bachelor of Science
2012 - 2012

Work History

D

DLA Piper Africa

Executive Assistant & Strategic Projects Lead

Lagos
2024 - 2025
M

Manufacturing Partnering Group

Project Manager – Operations & Procurement

Lagos
2023 - 2023