My research interests are into several problems in machine learning and computational statistics. My PhD dissertation was about designing nonparametric Bayesian models for learning low-dimensional latent structures from high-dimensional data (e.g., for learning latent features), and from multiple related learning tasks (e.g., for learning latent shared predictive structures). In addition, I also work on designing efficient inference methods for nonparametric Bayesian models, and probabilistic graphical models (structure learning and approximate inference).
Apart from these, some of my other previous works have been on designing label-efficient algorithms (e.g., domain adaptation, transfer learning, semi-supervised learning, active learning), learning with heterogeneous/multi-modal data (multiview learning), and large-scale learning (online learning, feature hashing).
Teaching:
- Machine Learning (Fall 2011)
- Machine Learning Seminar (Fall 2010)
Publications
Conferences/Journals
Stochastic Blockmodel with Cluster Overlap, Relevance Selection, and Similarity-Based Smoothing [pdf]
With: Joyce Whang and Inderjit Dhillon
ICDM 2013, Dallas, Texas
Simultaneously Leveraging Output and Task Structures for Multiple-Output Regression [pdf]
With: Abhishek Kumar and Hal Daumé III
NIPS 2012, Lake Tahoe, Nevada
Flexible Modeling of Latent Task Structures in Multitask Learning [pdf]
With: Alexandre Passos, Jacques Wainer and Hal Daumé III
ICML 2012, Edinburgh, Scotland
Co-regularized Multi-view Spectral Clustering [pdf]
With: Abhishek Kumar and Hal Daumé III
NIPS 2011, Granada, Spain
Message-Passing for Approximate MAP Inference with Latent Variables [pdf]
With: Jiarong Jiang and Hal Daumé III
NIPS 2011, Granada, Spain
A preliminary version appeared in the Learning Workshop 2010
Beam Search based MAP Estimates for the Indian Buffet Process [pdf][bib]
With: Hal Daumé III
ICML 2011, Bellevue, USA
Online Learning of Multiple Tasks and Their Relationships [pdf][bib]
With: Avishek Saha, Hal Daumé III, and Suresh Venkatasubramanian
AISTATS 2011, Ft. Lauderdale, Florida
Active Supervised Domain Adaptation [pdf][bib]
With: Avishek Saha, Hal Daumé III, Suresh Venkatasubramanian, and Scott L. DuVall
ECML 2011, Athens, Greece
Leveraging Social Bookmarks from Partially Tagged Corpus for Improved Webpage Clustering
[pdf][bib]
With: Anusua Trivedi, Hal Daumé III, and Scott L. DuVall
ACM Transactions on Intelligent Systems and Technology 2011
Distinguishing Locations Across Perimeters Using Wireless Link Measurements (to appear) [bib]
With: Junxing Zhang, Sneha Kasera and Neal Patwari
INFOCOM 2011, Shanghai, China
Infinite Predictor Subspace Models for Multitask Learning [pdf][bib]
With: Hal Daumé III
AISTATS 2010, Sardinia, Italy
Multi-Label Prediction via Sparse Infinite CCA [pdf][bib]
With: Hal Daumé III
NIPS 2009, Vancouver, Canada
Streamed Learning: One-Pass SVMs [pdf][bib]
With: Hal Daumé III, and Suresh Venkatasubramanian
IJCAI 2009, Pasadena, CA
A preliminary version appeared in the Learning Workshop 2008
The Infinite Hierarchical Factor Regression Model [pdf][bib]
With: Hal Daumé III
NIPS 2008, Vancouver, Canada
A preliminary version appeared in the Learning Workshop 2008
Refereed Workshop and Misc. Papers
Multiple Hash Functions for Learning
With: Amit Goyal and Hal Daumé III
NIPS 2011: Big Learning Workshop, Sierra Nevada, Spain
Co-regularized Spectral Clustering with Multiple Kernels
[pdf][bib]
With: Abhishek Kumar and Hal Daumé III
NIPS 2010: Workshop on New Directions in Multiple Kernel Learning,Whistler, Canada
Multiview Clustering with Incomplete Views
[pdf][bib]
With: Anusua Trivedi, Hal Daumé III, and Scott L. DuVall
NIPS 2010: Workshop on Machine Learning for Social Computing, Whistler, Canada
Domain Adaptation meets Active Learning [pdf][bib]
With: Avishek Saha, Hal Daumé III, and Suresh Venkatasubramanian
NAACL-HLT 2010: Active Learning for NLP Workshop , Los Angeles
Active Online Multitask Learning [pdf][bib]
With: Avishek Saha, Hal Daumé III, and Suresh Venkatasubramanian
ICML 2010: Budgeted Learning Workshop, Haifa, Israel
Exploiting Tag and Word Correlations for Improved Webpage Clustering
[pdf][bib]
With: Anusua Trivedi, Hal Daumé III, and Scott L. DuVall
CIKM 2010: Workshop on Search and Mining User-Generated Content, Toronto, Canada
Multitask Learning using Nonparametrically Learned Predictor Subspaces [pdf][bib]
With:Hal Daumé III
NIPS 2009: Workshop on Learning from Multiple Sources, Whistler, Canada
Factor Regression Combining Heterogeneous Sources of Information [pdf][bib]
With: Amrish Kapoor and Hal Daumé III
NIPS 2009: Workshop on Learning from Multiple Sources, Whistler, Canada
Enhancing the Perception of Collaborative Actions with Virtual Gestures [pdf][bib]
With: Patrick Horain, José Marques Soares, and André Bideau
AFVR 2006, Rocquencourt, France
Virtually Enhancing the Perception of User Actions [pdf][bib]
With: Patrick Horain, José Marques Soares, and André Bideau
ICAT 2005, Christchurch, New Zealand
A Cost-effective Multiple Camera Vision System using Firewire Cameras and Software Synchronization [pdf][bib]
With: Kamal Tiwari, Prithwijit Guha, and Amitabha Mukerjee
HiPC 2003, Hyderabad, India