Welcome to Intelligent Information Processing Lab (IIPL)

The Intelligent Information Processing Lab (IIPL) at the University of Iowa investigates fundamental mathematical principles governing information systems, and provides computational solutions to designing future machine intelligence. Active research areas include high dimensional geometry, machine intelligence, and signal processing. Our lab enjoys close collaborations with theoretical and experimental investigators.

The lab is led by Dr. Weiyu Xu. 

Recent News

  • Myung Cho's journal paper "Fast Dose Optimization for rotating shield brachytherapy" is accepted to Medical Physics with minor mandatory revision, May, 2017. 
  • Myung Cho successfully defended his Ph. D. thesis! Congratulations, Dr. Cho!
  • Haider Alshamary will be an assistant professor at the University of Diyala, Iraq. Congratulations, Dr. Alshamary!
  • Suhui Liu (AMCS) successfully defended his Ph. D. thesis!  Dr.  Liu will be a faculty member at WuHan Institute of Technology. Congratulaitons, Dr. Liu!
  • Myung Cho's and Kaustubh's two  works are accepted for oral presentations at AAPM (The American Association of Physicists in Medicine) Annual Meeting, 2017. Oral presentations acceptance rate: 23.6 % for AAPM 2016. Congratulations!
  • Ph.D. student Cai, Hanqin is awarded the Graduate College Summer Fellowship, 2017.
  • Weiyu Xu is giving an invited talk at SPIE Wavelets and Sparsity XVII conference in San Diego, 2017. Paper "2D Phaseless Superresolution" is accepted.
  • Weiyu Xu is organizing a minisymposium "Super-resolution in imaging and inverse problems" at the 9th Applied Inverse Problems conference in Hangzhou, 2017.  He is also giving an invited talk at the AIP conference.
  • Three papers are accepted to  2017 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2017) in New Orleans. Congratulations to Myung Cho and Yang Yang!
  • Weiyu Xu receives the Renewable Energy Impact Award from Iowa Energy Center at the 2016 Iowa Energy Summit, October 26th, 2016.
  • Weiyu's journal paper, "Quickest Sequential Multi-Band Spectrum Sensing with Mixed Observations" has been accepted to IEEE Transactions on Signal Processing, August 2016.
  • National Science Foundation (NSF, Division Of Mathematical Sciences) has awaded us "Collaborative Research: Wavelet Frames for Variational Models in Imaging: Bridging Discrete and Continuum", with Weiyu Xu as PI.
  • IIPL welcomes new group members Ms. Haiye Huo, and  Mr. Jirong Yi as Ph. D. students, starting in Fall, 2016!
  • Weiyu's journal paper, "Distributed Channel Estimation and Pilot Contamination Analysis for Massive MIMO-OFDM Systems" has been accepted to IEEE Transactions on Communications, 2016.
  • Haider Alshamary successfully defended his doctoral dissertation on massive MIMO in May, 2016. Congratulations to Haider, the 2nd IIPL Ph. D., and the 1st IIPL Ph. D. with Weiyu as sole advisor!
  • Haider Alshamary's paper, "Efficient optimal joint channel estimation and data detection for massive MIMO systems" is accepted to 2016 IEEE International Symposium on Information Theory (ISIT), Barcelona, Spain. Congratulations! 
  • Haider Alshamary receives BALLARD AND SEASHORE DISSERTATION FELLOWSHIP from graduate college, University of Iowa, 2016.
  • Weiyu Xu's journal paper "Robust recovery of complex exponential signals from random Gaussian measurements via low rank Hankel matrix reconstruction" is accepted to Applied and Computational Harmonic Analysis, 2016.
  • Lab alumnus Kumar Vijay Mishra  starts his new postdoc position at Technion - Israel Institute of Technology, working with Prof. Yonina Eldar. Congratulations!
  • Myung Cho is awarded a competitive NSF-funded travel grant to ICASSP 2016, based on ranking of paper quality.
  • Three papers by Myung Cho, Bingwen Zhang, and Weiyu Xu have been accepted to ICASSP 2016.  Myung Cho will also present his IEEE Signal Processing Letters paper at ICASSP.
  • Weiyu Xu will be an invited speaker at Institute for Mathematics and its Applications (IMA) Workshop "Optimization and Parsimonious Modeling".  http://www.ima.umn.edu/2015-2016/W1.25-29.16/W1.25-29.16_poster.pdf
  • Myung Cho and Kumar Vijay Mishra's journal paper,  "Block Iterative Reweighted Algorithms for Super-Resolution of Spectrally Sparse Signals" has been accepted to IEEE Signal Processing Letters, 2015.
  • We are looking for a postdoctoral fellow and one graduate student RA in convex optimization for medical applications (and one more graduate student RA in biomedical aspect of radiation oncology). Welcome to apply for these positions!
  • National Institutes of Health (NIH) has funded our NIH R01 research project on brachytherapy for cancer treatment, with total project budget at $ 1.48 million dollars (subject to 10% institute budget cut).
  • Weiyu has joined the faculty of the Applied and Computational Mathematical Sciences program at University of Iowa!
  • Weiyu's paper, "Detection of Correlated Components in Multivariate Gaussian Models" accepted to 2015 IEEE Information Theory Workshop, Jeju Island.
  • Weiyu's journal paper, "Improving the Thresholds of Sparse Recovery: An Analysis of a Two-Step Reweighted Basis Pursuit Algorithm" accepted to IEEE Transactions on Information Theory, 2015.
  • Weiyu's journal paper, "Paddle-based rotating-shield brachytherapy" accepted to Medical Physics, 2015.
  • Kumar Vijay Mishra and Myung Cho's journal paper "Spectral super-resolution with prior knowledge" accepted to IEEE Transactions on Signal Processing, 2015.
  • Haider Alshamary's paper "Optimal Non-coherent Data Detection for Massive SIMO Wireless Systems: A Polynomial Complexity Solution" accepted to IEEE Signal Processing Workshop and Signal Processing Education Workshop, 2015.
  • Weiyu's journal paper, "Guarantees of Total Variation Minimization for Signal Recovery" accepted to  Information and Inference, a journal published by Institute of Mathematics and its Applications (IMA), UK. 
  • Myung Cho and Kumar Vijay Mishra's work won Best Poster Award at the College of Engineering research open house!  
  • Grant  "Achieving Full Potentials of Massive MIMO Systems: Theories and Algorithms" awarded. Weiyu serves as co-PI. 
  • Hema Kumari Achanta successfully defended her doctoral dissertation. She will work as a postdoc at the University of Texas at Dallas. She is Weiyu's first graduated Ph.D. student (coadvised with Professor Soura Dasgupta). 
  • Weiyu's journal paper "Sparse recovery with graph constraints''  accepted to IEEE Transactions on Information Theory.  
  • Grant from Iowa Energy Center.
  • Myung Cho's journal paper  "System identification in the presence of outliers and random noises: A compressed sensing approach"  accepted to  Automatica.
  • Haider Ali Jasim Alshamary's journal paper "Optimized Markov Chain Monte Carlo for Signal Detection in MIMO Systems: An Analysis of the Stationary Distribution and Mixing Time" accepted to IEEE Transactions on Signal Processing.       
  • Grant from the Simons Foundation for mathematicians.