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Văn Hải Hà

Văn Hải Hà

AI Engineer | LLM Optimization & NLP Specialist

VIETNAM flag
Ho Chi Minh City, Vietnam
$20.00/hrIntermediateOther

Key Skills

Software

Other

Top Subject Matter

Technology & Software Development
Professional Services (Legal & Tax)
Media & Communications

Top Data Types

TextText
AudioAudio

Top Task Types

Fine Tuning

Freelancer Overview

PhoBERT Sentiment Analysis Fine-tuner. Brings 2+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other. Education includes Bachelor of Science, Đại Học Công Nghệ TP.HCM (2025). AI-training focus includes data types such as Text and labeling workflows including Fine-tuning.

IntermediateVietnameseEnglish

Labeling Experience

PhoBERT Sentiment Analysis Fine-tuner

OtherTextFine Tuning
Fine-tuned the PhoBERT model for sentiment analysis on Vietnamese social media comments. The task involved supervised training of the model for accurate emotion/sentiment prediction and comprehensive evaluation using F1-score and ROC-AUC metrics. The main objective was to improve the model's performance on real-world Vietnamese-language text data. • Collected and prepared text comments from social media for model training and validation. • Performed fine-tuning of the PhoBERT base model to classify sentiment polarity. • Evaluated modeling results, achieving an average F1-score of 0.85 and ROC-AUC of 0.92. • Documented the process and published results on Github.

Fine-tuned the PhoBERT model for sentiment analysis on Vietnamese social media comments. The task involved supervised training of the model for accurate emotion/sentiment prediction and comprehensive evaluation using F1-score and ROC-AUC metrics. The main objective was to improve the model's performance on real-world Vietnamese-language text data. • Collected and prepared text comments from social media for model training and validation. • Performed fine-tuning of the PhoBERT base model to classify sentiment polarity. • Evaluated modeling results, achieving an average F1-score of 0.85 and ROC-AUC of 0.92. • Documented the process and published results on Github.

2025 - 2025

Education

Đ

Đại Học Công Nghệ TP.HCM

Bachelor of Science, Artificial Intelligence

Bachelor of Science
2021 - 2025

Work History

D

Datacurve

Machine Learning Challenge Creator & Solver

san francisco
2026 - Present
B

Be Earning Co., Ltd

AI Engineer

Ho Chi Minh City
2025 - 2026