Academic Publications

Research at the intersection of machine learning, public transit economics, and generative models. Follow links below to read preprint PDFs, access open-source code repositories, or copy BibTeX citations.

280+ Total Citations

8 h-index

7 Core Papers

2 OS Libraries

Generative AI 2025

TransitGPT: A Generative AI-based framework for interacting with GTFS data using Large Language Models

Saipraneeth Devunuri, Lewis Lehe

Public Transport (Journal)

LLMs Generative AI GTFS NLP

PDF Code

@article{devunuri2025transitgpt,
  title={TransitGPT: a generative AI-based framework for interacting with GTFS data using large language models},
  author={Devunuri, Saipraneeth and Lehe, Lewis},
  journal={Public Transport},
  volume={17},
  number={2},
  pages={319--345},
  year={2025},
  publisher={Springer},
  doi={10.1007/s12469-024-00366-6}
}

Computer Vision 2025

A Pipeline and NIR-Enhanced Dataset for Parking Lot Segmentation

Shirin Qiam, Saipraneeth Devunuri, Lewis J. Lehe

IEEE/CVF Winter Conference on Applications of Computer Vision (WACV)

Computer Vision Deep Learning Segmentation

PDF Code

@inproceedings{qiam2025pipeline,
  title={A Pipeline and NIR-Enhanced Dataset for Parking Lot Segmentation},
  author={Qiam, Shirin and Devunuri, Saipraneeth and Lehe, Lewis J.},
  booktitle={Proceedings of the IEEE/CVF Winter Conference on Applications of Computer Vision (WACV)},
  pages={1227--1236},
  year={2025}
}

Generative AI 2024

ChatGPT for GTFS: Benchmarking LLMs on GTFS Semantics and Retrieval

Saipraneeth Devunuri, Shirin Qiam, Lewis J. Lehe

Public Transport (Journal)

LLMs Benchmarking GTFS Prompt Engineering

PDF

@article{devunuri2024chatgpt,
  title={ChatGPT for GTFS: benchmarking LLMs on GTFS semantics and retrieval},
  author={Devunuri, Saipraneeth and Qiam, Shirin and Lehe, Lewis J.},
  journal={Public Transport},
  volume={16},
  number={2},
  pages={333--357},
  year={2024},
  publisher={Springer},
  doi={10.1007/s12469-024-00354-x}
}

Transportation Systems 2024

GTFS Segments: A Fast and Efficient Library to Generate Bus Stop Spacings

Saipraneeth Devunuri, Lewis Lehe

The Journal of Open Source Software

Software Library GTFS GIS Python

PDF Code

@article{Devunuri2024,
  title={GTFS Segments: A Fast and Efficient Library to Generate Bus Stop Spacings},
  author={Devunuri, Saipraneeth and Lehe, Lewis},
  journal={Journal of Open Source Software},
  volume={9},
  number={95},
  pages={6306},
  year={2024},
  publisher={The Open Journal},
  doi={10.21105/joss.06306},
  url={https://doi.org/10.21105/joss.06306}
}

Transportation Systems 2024

Bus Stop Spacings Statistics: Theory and Evidence

Saipraneeth Devunuri, Lewis J. Lehe, Shirin Qiam, Ayush Pandey, Dana Monzer

Journal of Public Transportation

GTFS Public Transit Statistics

PDF

@article{devunuri2024bus,
  title={Bus Stop Spacings: Statistics, Theory and Evidence},
  author={Devunuri, Saipraneeth and Lehe, Lewis J. and Qiam, Shirin and Pandey, Ayush and Monzer, Dana},
  journal={Journal of Public Transportation},
  volume={26},
  pages={100085},
  year={2024},
  publisher={Elsevier},
  doi={10.1016/j.jpt.2024.100085}
}

Transportation Systems 2024

A Survey of Errors in GTFS Static Feeds from the United States

Saipraneeth Devunuri, Lewis Lehe

Transport Findings

Data Quality GTFS Public Transit

PDF

@article{devunuri2024survey,
  title={A Survey of Errors in GTFS Static Feeds from the United States},
  author={Devunuri, Saipraneeth and Lehe, Lewis},
  journal={Findings},
  year={2024},
  doi={10.32866/001c.116694},
  url={https://doi.org/10.32866/001c.116694}
}

Transportation Systems 2023

Scale Effects in Ridesplitting: A Case Study of the City of Chicago

Hao Liu, Saipraneeth Devunuri, Lewis Lehe, Vikash V. Gayah

Transportation Research Part A: Policy and Practice

Ridesharing Economics Simulation

PDF

@article{Liu2023ScaleEffects,
  title={Scale effects in ridesplitting: A case study of the City of Chicago},
  author={Liu, Hao and Devunuri, Saipraneeth and Lehe, Lewis and Gayah, Vikash V.},
  journal={Transportation Research Part A: Policy and Practice},
  volume={173},
  year={2023},
  doi={10.1016/j.tra.2023.103690},
  url={https://doi.org/10.1016/j.tra.2023.103690}
}

Transportation Systems 2022

An unsupervised learning framework for detecting adaptive cruise control operated vehicles in a vehicle trajectory data

Mohammadreza Khajeh Hosseini, Alireza Talebpour, Saipraneeth Devunuri, Samer H. Hamdar

Expert Systems with Applications

Unsupervised Learning Machine Learning ACC Trajectory Data

PDF

@article{hosseini2022unsupervised,
  title={An unsupervised learning framework for detecting adaptive cruise control operated vehicles in a vehicle trajectory data},
  author={Khajeh Hosseini, Mohammadreza and Talebpour, Alireza and Devunuri, Saipraneeth and Hamdar, Samer H.},
  journal={Expert Systems with Applications},
  volume={208},
  pages={118060},
  year={2022},
  publisher={Elsevier},
  doi={10.1016/j.eswa.2022.118060}
}

Transportation Systems 2022

Large elasticity at introduction

Lewis J. Lehe, Saipraneeth Devunuri

Research in Transportation Economics

Transportation Economics Congestion Pricing Elasticity Urban Planning

PDF

@article{lehe2022large,
  title={Large elasticity at introduction},
  author={Lehe, Lewis and Devunuri, Saipraneeth},
  journal={Research in Transportation Economics},
  volume={94},
  pages={101183},
  year={2022},
  publisher={Elsevier},
  doi={10.1016/j.retrec.2022.101183}
}

Computer Vision 2022

CrackSeg9k: A Collection and Benchmark for Crack Segmentation Datasets and Frameworks

Shreyas Kulkarni, Shreyas Singh, Dhananjay Balakrishnan, Siddharth Sharma, Saipraneeth Devunuri, Sai Chowdeswara Rao Korlapati

European Conference on Computer Vision (ECCV) Workshops

Computer Vision Deep Learning Segmentation Infrastructure

PDF Code

@inproceedings{kulkarni2022crackseg9k,
  title={CrackSeg9k: a collection and benchmark for crack segmentation datasets and frameworks},
  author={Kulkarni, Shreyas and Singh, Shreyas and Balakrishnan, Dhananjay and Sharma, Siddharth and Devunuri, Saipraneeth and Korlapati, Sai Chowdeswara Rao},
  booktitle={European Conference on Computer Vision},
  pages={179--195},
  year={2022},
  organization={Springer}
}