👋 PETAL Lab

The Pittsburgh EducaTional And Language technology lab
at the University of Pittsburgh focuses on Speech and Natural Language Technology for Educational Applications. Led by Prof. Diane J. Litman, our NLP research currently focuses on argument mining, multi-party dialogue, revision analysis, and summarization, applied to educational applications such as writing evaluation systems, dialogue tutors, and teacher dashboards.

Learn with each other ☕️

Share your knowledge with the group and explore exciting new topics together! Feel free to reach out to the group memebers for collaboration

Recent News

Tweets by PetalNLP

[June 2026] Tools Competition winner for the Multimodal College-Level Writing and Feedback Dataset

The Multimodal College-Level Writing and Feedback Dataset received a 2026 Tools Competition prize.

Jun 23, 2026 1 min read

[2026] Prof. Litman is included in Research.com's Best Computer Scientists ranking

Prof. Litman was included in Research.com’s 12th edition of Best Computer Scientists in the US and World.

Jan 1, 2026 1 min read

Nhat defended his dissertation! Congratuations Dr. Tran!

Nhat Tran successfully defended his dissertation, Automated Assessment of Classroom Discussion Quality with Large Language Models. See the defense announcement.

Dec 8, 2025 1 min read

Nhat defended his dissertation! Congratuations Dr. Tran!

Zhexiong completed his PhD Defense! Congratuations Dr. Liu!

Zhexiong Liu successfully defended his dissertation, Understanding and Generating Text Revisions with Intention-Adaptive Large Language Models. See the defense announcement.

Nov 21, 2025 1 min read

Zhexiong completed his PhD Defense! Congratuations Dr. Liu!

[August 2025] New NSF grant on learning technologies

Prof. Litman received a new NSF grant on learning technologies.

Aug 1, 2025 1 min read