Ni Lao (劳逆)

I've graduated from Language Technologies Institute, School of Computer Science at Carnegie Mellon University. My advisor was professor William W. Cohen. Now I work at Google Research.

I work on machine learning, information retrieval, and natural language processing. I am generally interested in models with rich structures, and am currently studying relational models for IR/NLP applications. Previously I have studied a wide range of topics such as robotic soccer, computer system diagnosis, product search, and question answering.

My CV, research statement, and thesis. My collection of interesting stuff

I TAed classes Machine Learning with Large Datasets, 2012 and Machine Learning, 2010.


My DBLP page and Google Scholar page

Ni Lao, Einat Minkov and William Cohen, Learning relational features with backward random walks , ACL 2015. poster

William Yang Wang, Kathryn Mazaitis, Ni Lao, Tom M. Mitchell, William W. Cohen, Efficient Inference and Learning in a Large Knowledge Base: Reasoning with Extracted Information using a Locally Groundable First-Order Probabilistic Logic, Machine Learning Journal (MLJ 2015), Springer.

T. Mitchell, W. Cohen, E. Hruscha, P. Talukdar, J. Betteridge, A. Carlson, B. Dalvi, M. Gardner,B. Kisiel,J. Krishnamurthy, N. Lao, K. Mazaitis, T. Mohammad, N. Nakashole, E. Platanios,A. Ritter, M. Samadi, B. Settles, R.Wang, D.Wijaya, A. Gupta, X. Chen, A. Saparov, M. Greaves, J.Welling (2015): Never-Ending Learning in AAAI-2015.

Ni Lao, Jun Zhu: Contrastive Feature Induction for Efficient Structure Learning of Conditional Random Fields. CoRR abs/1406.7445 (2014) code

Xin Luna Dong, Evgeniy Gabrilovich, Geremy Heitz, Wilko Horn, Ni Lao, Kevin Murphyy, Thomas Strohmann, Shaohua Sun, Wei Zhang Knowledge Vault: A Web-Scale Approach to Probabilistic Knowledge Fusion. KDD, 2014

Kevyn B Collins-thompson, Ni Lao, Context-Aware Query Alteration, US Patent 20120233140, 2012

Ni Lao, Amarnag Subramanya, Fernando Pereira, William W. Cohen Reading The Web with Learned Syntactic-Semantic Inference Rules. EMNLP, 2012

Ni Lao, William W. Cohen, Personalized Reading Recommendations for Saccharomyces Genome Database. DILS, 2012 poster

Ni Lao, Tom Mitchell, William W. Cohen, Random Walk Inference and Learning in A Large Scale Knowledge Base. EMNLP, 2011 slides poster AMT labels of 16 relations Distant Supervision labels of 96 relations

Jun Zhu, Ni Lao, Ning Chen, Eric P. Xing Conditional Topical Coding: an Efficient Topic Model Conditioned on Rich Features. KDD, 2011

Ni Lao, William W. Cohen, Relational retrieval using a combination of path-constrained random walks Machine Learning, 2010, Volume 81, Number 1, Pages 53-67  (ECML, 2010 slides poster )

Ni Lao, Jun Zhu, Liu Liu, Yandong Liu, William W. Cohen, Efficient Relational Learning with Hidden Variable Detection. NIPS, 2010 poster

Ni Lao, William W. Cohen, Fast Query Execution for Retrieval Models based on Path Constrained Random Walks. KDD, 2010

Jun Zhu, Ni Lao, E. P. Xing, Grafting-Light: Fast, Incremental Feature Selection and Structure Learning of Markov Random Fields. KDD, 2010

Lao, Ni, Hideki Shima, Teruko Mitamura and Eric Nyberg. 2008. Query Expansion and Machine Translation for Robust Cross-Lingual Information Retrieval , in Proceedings of NTCIR-7 Workshop, Japan.

Shima, Hideki, Ni Lao, Eric Nyberg and Teruko Mitamura. 2008. Complex Cross-lingual Question Answering as Sequential Classification and Multi-Document Summarization Task , in Proceedings of NTCIR-7 Workshop, Japan.

W. Zuo, N. Lao, Y. Geng, and K. Ma. 2008. GeoSVM: an efficient and effective tool to predict species' potential distributions. Journal of Plant Ecology, 1(2): 143-145.

Yiming Yang,Abhimanyu Lad, Ni Lao, Abhay Harpale, Bryan Kisiel, Monica Rogati, Utility-based information distillation over temporally sequenced documents, SIGIR, pp. 31-38, 2007.

Chun Yuan; Ni Lao; Ji-Rong Wen; Jiwei Li; Zheng Zhang; Yi-Min Wang; Wei-Ying Ma, Automated Known Problem Diagnosis with Event Traces, EuroSys, 2006.

Ni Lao, Ji-Rong Wen, Wei-Ying Ma, Yi-Min Wang, Combine High Level Symptom and Low Level State Information for Configuration Fault Diagnosis, LISA, 2004.

Ji-Rong Wen, Ni Lao, Wei-Ying Ma, Probabilistic Model for Contextual Retrieval, SIGIR, 2004.

Archana Ganapathi, Yi-Min Wang, Ni Lao, Ji-Rong Wen, Why PCs Are Fragile and What We Can Do About It: A Study of Windows Registry Problems, Dependable System and Network (DSN), 2004.

Jinyi Yao, Lao Ni, Fan Yang, Yunpeng Cai, Zengqi Sun, Technical Solutions of TsinghuAeolus for Robotic Soccer. Robocup 2003: 205-213,RoboCup, pp. 205-213, 2003

Unpublished Manuscript and Presentations

(a few interesting ideas which I wish I have time to pursuit)

Ni Lao, NIPS 2016 Overview . 2016.

Ni Lao, Neural Symbolic Machines . 2016.

Ni Lao, New Development in Knowledge Acquisition, Inference, and Applications . 2015. (This is a lecture at CCF ADL65. I added my take on the relationship between connectionism and symbolism, which seems to be an important issue at the moment.)

Ni Lao, Elephant and AI . LTI Colloquium Report, Spring 2012.

Ni Lao, Programming by Demonstrations and Verbal Commands. LTI Colloquium Report, Spring 2012

Ni Lao, Beyond Shallow Semantics. LTI Colloquium Report, Fall 2011.

Ni Lao, CCG, Fractal, and Emergence. LTI Colloquium Report, Spring 2011.

Ni Lao, Reinforcement Learning In An Unknown Domain (slides). 2011.

Ni Lao, Probablistic Ontology Model. LTI Colloquium Report Fall 2010.

Ni Lao, Split-Emit Process for Natural Language Generation. Advanced NLP seminar 2009.

Ni Lao, Jun Zhu, Contrastive Feature Induction for Efficient Structure Learning of Conditional Random Fields . 2009.

Ni Lao, T. Mitamura, E. Nyberg, Tree Representations for Chinese Semantic Role Labeling. 2009.

Ni Lao, Read The Web (slides). Advanced IR seminar 2007.

Ni Lao, Schema Extraction Model . Advanced IR seminar 2007.

Ni Lao, Knowledge Acquisition From Text--A Survey Statistical NLP class 2007.



PhD thesis, 2012. Efficient Random Walk Inference with Knowledge Bases (slides). Carnegie Mellon University

Master thesis, 2006. Data Mining Problems in Automatic Computer Diagnosis. Tsinghua University

Bachelor thesis, 2003. Mining Spatial-Temporal Data Using Constructive Induction. Tsinghua University


2012, Path Ranking Algorithm A system for relational retrieval on heterogamous graphs

2006, geoSVM A predictive system for modeling species potential distributions based on SVM. See details at Wenyun's page

Data Sets

2012, NELL v165 NELL Knowledge graph in both triple format and PRA format

2010, yeast2 updated yeast data with extra information about Mesh heading, chemicals and affiliations etc. (321K entities and 6.1M links)

2010, fly a biological literature graph with 770K entities and 3.5M links

2010, yeast a biological literature graph with 164K entities and 2.8M links

Reviewer Services



2014: KDD, CIKM

2013: CIKM

2012: KDD, Neurocomputing Journal, SIGIR, JCST, TKDD

2011: NIPS, Transactions on Fuzzy Systems

2010: CIKM