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Stephen Lyle Greenough

Stephen Lyle Greenough

AI Data Annotation Specialist - Technology & Internet

USA flag
GULFPORT, Usa
$20.00/hrExpertCVAT

Key Skills

Software

CVATCVAT

Top Subject Matter

No subject matter listed

Top Data Types

ImageImage

Top Label Types

Polygon

Freelancer Overview

I am an AI data annotation and language quality specialist with a PhD in English and Applied Language Studies, and extensive experience in labeling and validating high-volume datasets for AI training. My expertise spans image, text, audio, video, and 3D sensor data, with a strong focus on computer vision and NLP tasks such as bounding box annotation, semantic segmentation, keypoints, classification, and OCR validation. I am proficient in leading annotation tools including CVAT, SuperAnnotate, Labelbox, and AWS SageMaker Ground Truth, and excel at reviewing multimodal datasets to ensure precise alignment between visual and textual outputs. My background in linguistic analysis and quality assurance allows me to deliver consistently accurate, high-quality annotations and to identify and correct errors efficiently in remote workflows. I am highly adaptable to new tools and domains, and am committed to maintaining rigorous standards in every project I undertake.

ExpertEnglish

Labeling Experience

CVAT

Multimodal Image Annotation and Language Validation for AI Training Data

CVATImagePolygon
Performed high accuracy data labeling and validation of multimodal AI training data that used image and textual inputs. Applied bounding boxes, polygon annotations and semantic segmentation and keypoint labeling to assist object detection and classification models. Edited and approved annotation results to make sure that visual data and related textual answers are matched. Ascertained and confirmed text in images with high regard to grammatical correctness, readability and completeness. Conducted quality assurance activities such as error identification, relabeling and testing of dataset consistency. Replied the answers in understandable and independent answers without references to the visual context and recorded the cases of ambiguity or an unanswerable question. Regularly achieved productivity and quality standards in remote annotation processes and worked within the project specifications.

Performed high accuracy data labeling and validation of multimodal AI training data that used image and textual inputs. Applied bounding boxes, polygon annotations and semantic segmentation and keypoint labeling to assist object detection and classification models. Edited and approved annotation results to make sure that visual data and related textual answers are matched. Ascertained and confirmed text in images with high regard to grammatical correctness, readability and completeness. Conducted quality assurance activities such as error identification, relabeling and testing of dataset consistency. Replied the answers in understandable and independent answers without references to the visual context and recorded the cases of ambiguity or an unanswerable question. Regularly achieved productivity and quality standards in remote annotation processes and worked within the project specifications.

2020 - 2021

Education

U

University of Wisconsin–Madison

Doctor of Philosophy, English and Applied Language Studies

Doctor of Philosophy
2019 - 2023
B

Boston University

Master of Arts, English and Writing Studies

Master of Arts
2017 - 2019

Work History

H

Horizon Academic Consulting

Academic Writing Consultant

Seattle
2019 - 2022
H

Horizon Academic Consulting

Academic Writing Consultant

Seattle
2019 - 2022