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Unggul S.

Unggul S.

AI Data Annotator & Core Logical Evaluator (Freelance)

Indonesia flagSemarang City, Indonesia

Key Skills

Software

Label StudioLabel Studio

Top Subject Matter

Named Entity Recognition (NER) annotation for NLP text datasets

Top Data Types

TextText

Top Task Types

Entity (NER) ClassificationEntity (NER) Classification

Freelancer Overview

As a final-year Computer Science student, I approach AI data training with a strong foundational understanding of how high-quality data directly impacts machine learning models. I have practical experience working with industry-standard tools like Label Studio. My background includes handling Computer Vision tasks, where I am highly meticulous in creating accurate polygon annotations and bounding boxes for object detection and image segmentation workflows.

Labeling Experience

Computer Vision Data Annotator (Polygon Segmentation)

ImageImagePolygonPolygon

xecuted high-precision polygon annotations on image datasets to train computer vision models for object detection and image segmentation. Utilized Label Studio to accurately outline and segment complex objects, ensuring high-quality training data delivery and strict adherence to project guidelines

2026 - Present
Label Studio

AI Data Annotator & Core Logical Evaluator (Freelance)

Label StudioLabel StudioTextTextEntity (NER) ClassificationEntity (NER) Classification

Freelance AI Data Annotator performed precision data labeling for NLP datasets in support of Named Entity Recognition (NER) tasks. The work included span annotation and custom multi-class XML labeling interface configuration to extract entity categories such as PERSON, ORGANIZATION, LOCATION, DATE, and MISC. The annotator also evaluated ground-truth logic and handled edge cases to reduce linguistic ambiguities while resolving XML/JSON syntax anomalies that affected parsing reliability. • Labeled entity spans for NER using Label Studio • Built custom XML labeling interfaces for multi-class extraction • Conducted edge-case evaluation to improve training data fidelity • Debugged XML/JSON structured errors during environment setup to ensure reliable parsing

2026 - Present

Education

U

Universitas Dian Nuswantoro

Bachelor of Computer Science, Computer Science

Bachelor of Computer Science
2022

Work History

A

Academic & Personal Projects

Data Engineering & Analytical Sandbox

Location not specified
2022 - 2026