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Nuona Chen

Nuona Chen

Data Annotation Analyst - AI & Machine Learning

USA flag
FISHERS, Usa
$21.00/hrExpertOther

Key Skills

Software

Other

Top Subject Matter

No subject matter listed

Top Data Types

AudioAudio
DocumentDocument

Top Label Types

Classification
Question Answering

Freelancer Overview

I am a Data Annotation Analyst with hands-on experience in large-scale AI data labeling and quality assurance, supporting machine learning training pipelines for projects involving voice data and web search relevance. My background includes applying complex annotation guidelines, exercising sound judgment in ambiguous cases, and ensuring data integrity by identifying inconsistencies that impact downstream ML performance. I am skilled in Python, R, SQL, and Excel for data management, analysis, and visualization, and have practical experience with tools like NumPy, Pandas, seaborn, matplotlib, and PowerBI. My academic training in Biostatistics and Computer Science, coupled with experience in statistical modeling and machine learning, enables me to contribute effectively to data-centric AI projects, including those in healthcare and natural language processing domains.

ExpertEnglishChinese MandarinCantonese

Labeling Experience

General AI Data Annotator

OtherAudioClassificationQuestion Answering
There are two main tasks. One task is comparing two AI-generated audios based on audio quality, naturalness, expressiveness, and content relevance toward user request. This task size is about 20 jobs per hour. The other task is checking if AI response understands and answers user voice request and if response is factually true or false. The quality measure is maintained through accuracy of labeling. This task size is about 10 jobs per hour depending on complexity of request and response.

There are two main tasks. One task is comparing two AI-generated audios based on audio quality, naturalness, expressiveness, and content relevance toward user request. This task size is about 20 jobs per hour. The other task is checking if AI response understands and answers user voice request and if response is factually true or false. The quality measure is maintained through accuracy of labeling. This task size is about 10 jobs per hour depending on complexity of request and response.

2024

Language Data Analyst

OtherDocumentClassification
There are several tasks, such as evaluating images, videos, and web pages from Bing search engine. The main scope of the tasks is to check if the search engine results are relevant to user search key words and satisfy their intents.

There are several tasks, such as evaluating images, videos, and web pages from Bing search engine. The main scope of the tasks is to check if the search engine results are relevant to user search key words and satisfy their intents.

2021 - 2024

Education

U

University of Michigan Ann Arbor

Master of Science, Biostatistics

Master of Science
2021 - 2024
I

Indiana University Bloomington

Bachelor of Science, Public Health – Epidemiology

Bachelor of Science
2016 - 2021

Work History

R

RWS

GENERAL AI DATA ANNOTATOR

Fishers
2024 - Present
V

Volga Partners

LANGUAGE DATA ANALYST

Kirkland
2021 - 2024