Professor Jia Xu

Home Page of Jia Xu

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Biography

I am a faculty member at Stevens Institute of Technology, specializing in natural language processing and machine learning. Previously, I served as an Associate Professor at the Chinese Academy of Sciences and as an Assistant Professor and Ph.D. advisor at Tsinghua University. I earned my Ph.D. from RWTH Aachen University under Prof. Hermann Ney, with research visits to Microsoft Research and IBM Watson. My work includes approximately 50 publications, 12 patents and provisional patents, and contributions to 18 top-ranking teams in major NLP competitions, including second place in the Amazon Alexa Prize Social Bot Challenge.

Publications

Research Paper 2

System Description of ICT/Dublin NIST-15 Machine Translation System

J. Xu

June 2015, Workshop of Open Machine Translation

Research Paper 2

Synchronous Learning of Chinese Word Segmentation and Word Alignment

J. Xu, J. Gao, K. Toutanova and H. Ney

2011, Handbook of Natural Language Processing and Machine Translation (Book chapter)

Research Paper 2

A Computational Model for Sound Processing in the Human Auditory System

J. Xu

November 2002, Dissertation of Master of Computer Science

Competitions

Alexa Prize 2023

Alexa Prize

representing SIT. Socialbot Challenge 5 at Amazon, team advisor.

WMT 2022

WMT

(Hinglish→English), team advisor at SIT. (w.r.t. WER) in Hindi+English→Hinglish, team advisor.

WMT 2018

WMT

representing Hunter. French-English Biomedical track, team leader.

WMT 2017

WMT

(w.r.t. BLEU) representing Hunter. Finnish-English News track, team leader.

NIST 2015

NIST

(academic) and 4th place (overall) with ICT-DCU. Team leader and main contributor.

WMT 2011

WMT

(w.r.t. BLEU) with DFKI. English-German News track, Official result.

NIST 2008

NIST

1st place with MSR. Official result.

GALE 2006–2008

GALE

2nd place in NightInGale 3 years running with RWTH-Aachen.

GALE 2006–2008

GALE

2nd place in NightInGale 3 years running with RWTH-Aachen.

GALE 2006–2008

GALE

2nd place in NightInGale 3 years running with RWTH-Aachen.

NIST 2006–2004

NIST

4th place with RWTH-Aachen. Official results.

NIST 2006–2004

NIST

4th place with RWTH-Aachen. Official results.

NIST 2006–2004

NIST

2nd place with RWTH-Aachen. Official results.

TC-Star

TC-Star

1st place for three consecutive years with RWTH-Aachen.

TC-Star

TC-Star

1st place for three consecutive years with RWTH-Aachen.

TC-Star

TC-Star

1st place for three consecutive years with RWTH-Aachen.

Funding

eBay Grant

eBay Research Grant

Principal Investigator. Project: Retailer Linked Dialogues: Chatting, Carting, and Caring.

CCDC Grant

CCDC Quantum-AI Project

Co-PI. Project on Quantum Technology Assisted with AI.

Amazon Grant

Amazon Alexa Prize Grant

Principal Investigator. Project: Never Alone with Me (NAM).

NSF CRAFT

NSF CRAFT Pilot

Principal Investigator. Project: Center for Research toward Advanced Financial Technologies (CRAFT).

NSF CARTA

NSF CARTA Grant

Co-PI. Project: Center for Accelerated Real Time Analytics (IUCRC Phase I, Rutgers).
Grant No. 1747728

NSF-China

NSF-China (NSFC) Grant

Co-PI. Project: Key Problems for Tightly-Coupled, Multi-Signal Fusion-based SLAM.
Grant No. 61672524

ICT-CAS

ICT-CAS Innovation Grant

Principal Investigator. Project: Ensemble Learning in Machine Translation.
Grant No. 20156020

KLIIP-ICT

KLIIP-ICT-CAS Grant

Principal Investigator. Project: Novel Machine Learning Methods.
Grant No. 20156020

NSFC Grant

NSFC Grant on Reasoning

Co-PI. Project: New Approaches to the Limits of Efficient Propositional Reasoning.
Grant No. 20131351464

IIIS-Tsinghua

IIIS-Tsinghua Internal Grant

Principal Investigator. Project: Machine Learning and Machine Translation.

Teaching

Alexa Prize 2023

Quantum Machine Learning 810

Graduate course on quantum-enhanced machine learning methods.

Alexa Prize 2023

Deep Learning Competition 810

Graduate course.

Alexa Prize 2023

Deep Learning CS 583

Graduate course.

Alexa Prize 2023

Deep Learning CS 583

Graduate course.

Alexa Prize 2023

Data Structures CS 284D

Graduate course.

Alexa Prize 2023

Deep Learning CS 583A

Graduate course.

Alexa Prize 2023

Data Structures CS 284D

Undergraduate course.

Alexa Prize 2023

Deep Learning 583B

Graduate course.

Alexa Prize 2023

Deep Learning CSCI 79522 & 49377

Graduate & Undergraduate course.

Alexa Prize 2023

Natural Language Processing C-SC 74040

Graduate course.

Alexa Prize 2023

Supervised Research CSCI 49600

Undergraduate course.

Alexa Prize 2023

Language Technology CSCI 49362

Undergraduate course.

Research

Individual Study C-SC 79000 35822

Graduate course.

Alexa Prize 2023

Language Technology CSCI 49362

Graduate course.

Alexa Prize 2023

Supervised Research CSCI 49600

Undergraduate course.

Research

Individual Study C-SC 79000 35822

Graduate course.

Alexa Prize 2023

Software Design and Analysis III CSCI 33500

Undergraduate course.

Alexa Prize 2023

Language Technology CSCI 49362

Undergraduate course.

Research

Individual Study C-SC 79000 35822

Graduate course.

Alexa Prize 2023

Supervised Research CSCI 49600

Undergraduate course.

Alexa Prize 2023

Natural Language Processing C-SC 74040

Graduate course.

Alexa Prize 2023

Language Technology LING 83600 32100

Graduate course.

Alexa Prize 2023

Software Analysis and Design I CSCI 13500

Undergraduate course.

Alexa Prize 2023

Machine Learning and Translation

Graduate course.

Speech & ML

Speech Communication for Humans & Machines

Undergraduate course, co-taught with multiple professors.

Alexa Prize 2023

Machine Learning and Pattern Recognition

Undergraduate course.

ML & Translation

Machine Learning and Translation

Undergraduate course.

Language Tech

Language Technology

Graduate course, co-taught with Hans Uszkoreit and Martin Kay.

Patents

Patent 1

Latent Concept Analysis Method

Hassan Sajjad, Fahim Dalvi, Firoj Alam, Nadir Durrani, Abdul Rafae Khan, and Jia Xu


Patent 2

Unsupervised Chinese Word Segmentation for Statistical Machine Translation

Jianfeng Gao, Kristina Nikolova Toutanova, and Jia Xu

Invited Talks

Alexa Prize 2023

SIT


Alexa Prize 2023

NYU


Alexa Prize 2023

CUNY GC


Alexa Prize 2023

JSALT


Alexa Prize 2023

MTMA


Alexa Prize 2023

Google Research NYC


Alexa Prize 2023

Columbia University


Alexa Prize 2023

University of Washington


Alexa Prize 2023

USC


Alexa Prize 2023

CWMT


Alexa Prize 2023

RWTH-Aachen University


Alexa Prize 2023

Aarhus University


Alexa Prize 2023

Stanford University


Alexa Prize 2023

Facebook


Current Students

Abdul Rafae Khan

Abdul Rafae Khan

Postdoctoral researcher at Stevens Institute of Technology.

Nikhil Reddy

Nikhil Reddy

Ph.D. student at Stevens Institute of Technology.

Joao Luis Lins

Joao Luis Lins

Ph.D. student (Full-time Researcher at Meta from May 2025).

Hongbo Liu

Hongbo Liu

Ph.D. student (co-advised) at Stevens Institute of Technology.

Ella Crabtree

Ella Crabtree

M.Sc. student at Stevens Institute of Technology.

Shudhanshu Ranjan

Shudhanshu Ranjan

M.Sc. student at Stevens Institute of Technology.

Nikhil Naik

Nikhil Naik

M.Sc. student at Stevens Institute of Technology.

Alumni

Research Paper 2

Mengjiao Zhang (Stevens)

Thesis: Privacy in Federated Learning
Now at Microsoft

Research Paper 2

Xuting Tang (Stevens)

Thesis: Trust in the AI-R
Now at ICE

Research Paper 2

Abdul Khan (CUNY GC)

Thesis: Robust Neural Machine Translation
Now at Stevens

Cuong Huang

Cuong Huang (CUNY)

Thesis: (Research) Quality Estimation
Now at Amazon

Research Paper 2

Abhijeet Gusain (Stevens)

Thesis: Chatbot for Student Mental Health
Now at Meta

Research Paper 2

Yeshwanth Reddy (Stevens)

Thesis: Reducing the Randomness in Chatbot Evaluation with Test-retest Match
Now at InfoSys

Research Paper 2

Madhuri Paluri (Stevens)

Thesis: Efficient Sub-sentence Classification
Now at Minnesota Government Agency

Research Paper 2

Md Kowsher (Stevens)

Thesis: Efficient Machine Learning Methods

Research Paper 2

Sattvik Sahai (Stevens)

Thesis: Pairwise Tracklet Association for Long-term Multiple Object
Now at Amazon

Research Paper 2

Sejal Vyas (Stevens)

Thesis: Cross-domain Machine Translation
Now at Barclays

Geliang Chen

Geliang Chen (Tsinghua)

Thesis: Phrase-based Language Model for Statistical Machine Translation (SMT)

Xiaojun Zhang

Xiaojun Zhang (U. Saarland)

Thesis: Two-level Parallel Text Extraction from Comparable Corpora
Now at Xi’an Jiaotong-Liverpool University

Nan Chen

Nan Chen (Stevens)

Thesis: Efficiency and Security Calls Out Graph Partition Schemes in Federated Learning
Now at Yuanfudao

Yong Cheng

Yong Cheng (NJTU)

Thesis: Analysis of User Behaviors in Social Network
Now at Google

Shun Zheng

Shun Zheng (BUPT)

Thesis: Improvements on Word Alignment Models in SMT
Now at Microsoft

Research Paper 2

Zhengping Che (Tsinghua)

Thesis: Dirichlet Process Model for Phrase-based MT
Now at Midea Group

Yulong Zeng

Yulong Zeng (Tsinghua)

Thesis: A Comparative Study of Generative Model and Discriminative Model
Now at YeeZ Technology

Zhibo Zhang

Zhibo Zhang (Tsinghua)

Thesis: Machine Learning-based Crime Prediction

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