Organizing Committee

Mathematical advances that reduce the complexity of models are complemented by algorithms that achieve the desired reduction in computational effort. This workshop focuses on the synthesis and development of algorithmic approaches to model order reduction. These methods tackle fundamental problems in structure- and topology-preserving reductions, low-rank models and dimension reduction, multi-level approaches, and empirical interpolation and approximations, etc. Complementary approaches that target computational efficiency include strategies with offline and online phases and divide-and-conquer algorithms.

Image for "Algorithms for Dimension and Complexity Reduction"

Confirmed Speakers & Participants

  • Speaker
  • Poster Presenter
  • Attendee

Workshop Schedule

Monday, March 23, 2020
8:30 - 8:55Registration - ICERM 121 South Main Street, Providence RI 0290311th Floor Collaborative Space,  
8:55 - 9:00Welcome - ICERM Director11th Floor Lecture Hall,  
9:00 - 9:45Structured Autoencoders for Operator-theoretic decomposition and Model reduction of Spatio-temporal dynamics - Karthik Duraisamy, Dept of Aerospace engineering11th Floor Lecture Hall,
10:00 - 10:30Coffee/Tea Break11th Floor Collaborative Space,  
10:30 - 11:15TBA - Laura Grigori, INRIA Paris11th Floor Lecture Hall,  
11:30 - 12:15Model Order Reduction of Energy Networks with a Focus on Hyperbolic Systems - Sara Grundel, Max Planck Institute for Dynamics of Complex Technical Systems Magdeburg11th Floor Lecture Hall,
12:30 - 2:30Break for Lunch / Free Time  
2:30 - 3:15Uncertainties in Randomized Dimension Reduction for Least Squares Regression - Ilse C.F. Ipsen, North Carolina State University11th Floor Lecture Hall,
3:30 - 4:00Coffee/Tea Break11th Floor Collaborate Space,  
4:00 - 4:45Reduced basis methods for linear fractional elliptic problems - Akil Narayan, University of Utah11th Floor Lecture Hall,
5:00 - 6:30Welcome Reception11th Floor Collaborative Space,  
Tuesday, March 24, 2020
9:00 - 9:45Kernel-based Surrogate Modelling for Dynamical Systems - Bernard Haasdonk, IANS, University of Stuttgart, Germany11th Floor Lecture Hall,
10:00 - 10:30Coffee/Tea Break11th Floor Collaborative Space,  
10:30 - 11:15Localized model order reduction - Kathrin Smetana, University of Twente11th Floor Lecture Hall,
11:30 - 12:15Goal-oriented adaptivity within the Generalized Multiscale Finite Element Method - Sara Pollock, University of Florida11th Floor Lecture Hall,
12:30 - 2:00Break for Lunch / Free Time  
2:00 - 2:45TBA - Serkan Gugercin, Virginia Tech11th Floor Lecture Hall,  
3:00 - 3:45A Time-Multiscale Model Order Reduction Method In Nonlinear Solid Mechanics - Pierre Ladeveze, Ens Paris-Saclay11th Floor Lecture Hall,
4:00 - 4:20Poster Session Blitz11th Floor Lecture Hall,  
4:30 - 6:30Algorithms for Dimension and Complexity Reduction Poster Session11th Floor Collaborate Space,  
Wednesday, March 25, 2020
9:00 - 9:45A Reduced Order Modeling approach for PDEs with bifurcating solutions - Annalisa Quaini, University of Houston11th Floor Lecture Hall,
10:00 - 10:30Coffee/Tea Break11th Floor Collaborative Space,  
10:30 - 11:15On the stability of projection-based model order reduction for convection-dominated laminar and turbulent flows - Charbel Farhat, Stanford University11th Floor Lecture Hall,
11:30 - 12:15Port-Reduced Reduced Basis Component for incompressible fluid flows - Amina Benaceur, MIT11th Floor Lecture Hall,
12:30 - 12:40Group Photo11th Floor Lecture Hall,  
12:40 - 2:30Break for Lunch / Free Time  
2:30 - 3:15Data-Driven Variational Multiscale Reduced Order Models - Traian Iliescu, Virginia Tech11th Floor Lecture Hall,
3:30 - 4:00Coffee/Tea Break11th Floor Collaborative Space 
4:00 - 4:45POD Reduced-Order Modeling of Complex Fluid Flows - Zhu Wang, University of South Carolina11th Floor Lecture Hall,
Thursday, March 26, 2020
9:00 - 9:45Reduced order models for complex fluid systems - Steve Brunton, University of Washington11th Floor Lecture Hall,
10:00 - 10:30Coffee/Tea Break11th Floor Collaborative Space,  
10:30 - 11:15TBA - Misha Kilmer, Tufts University11th Floor Lecture Hall,  
11:30 - 12:15Novel tensor framework for model reduction and neural networks - Shashanka Ubaru, IBM Research11th Floor Lecture Hall,
12:30 - 2:30Break for Lunch / Free Time  
2:30 - 3:15Sensor Selection for Bayesian Inverse Problems and Data Assimilation via Dimension Reduction - Nicole Nellesen, RWTH Aachen University11th Floor Lecture Hall,
3:30 - 4:00Coffee/Tea Break11th Floor Collaborative Space 
4:00 - 4:45Efficient randomized approach for eigensystem realization algorithm - Arvind Saibaba, North Carolina State University11th Floor Lecture Hall,
Friday, March 27, 2020
9:00 - 9:45Stochastic Reduced Models - $L_2$ projections and $L_1$ approximations - Roger Ghanem, University of Southern California11th Floor Lecture Hall,
10:00 - 10:30Coffee/Tea Break11th Floor Collaborative Space,  
10:30 - 11:15Randomization for the Efficient Reduced Order Models in Diffuse Optical Tomography - Selin Aslan, Argonne National Laboratory11th Floor Lecture Hall,
11:30 - 12:15Reliable and efficient model reduction of parametrized aerodynamics problems - error estimation and Adaptivity - Masayuki Yano, University of Toronto11th Floor Lecture Hall,
12:30 - 2:30Break for Lunch / Free Time  
2:30 - 3:15TBA - Benjamin Stamm, RWTH Aachen University11th Floor Lecture Hall,  
3:30 - 4:00Coffee/Tea Break11th Floor Collaborative Space 
4:00 - 4:45Raising Semantic and Syntactic Dimensionality for Model Complexity Reduction - John Michopoulos, U.S. Naval Research Laboratory11th Floor Lecture Hall,

Application Information

ICERM welcomes applications from faculty, postdocs, graduate students, industry scientists, and other researchers who wish to participate. Some funding may be available for travel and lodging. Graduate students who apply must have their advisor submit a statement of support in order to be considered.

Your Visit to ICERM

ICERM Facilities
ICERM is located on the 10th & 11th floors of 121 South Main Street in Providence, Rhode Island. ICERM's business hours are 8:30am - 5:00pm during this event. See our facilities page for more info about ICERM and Brown's available facilities.
Traveling to ICERM
ICERM is located at Brown University in Providence, Rhode Island. Providence's T.F. Green Airport (15 minutes south) and Boston's Logan Airport (1 hour north) are the closest airports. Providence is also on Amtrak's Northeast Corridor. In-depth directions and transportation information are available on our travel page.
To secure ICERM's preferred hotel rate at the Hampton Inn & Suites Providence Downtown, use this link. ICERM regularly works with two additional area hotels for short visits. The Graduate Hotel and Hilton Garden Inn both have discounted rates available. Contact before booking outside of the preferred rate or if you would like to book alternate accommodations.
The only way ICERM participants should book a room is through the hotel reservation links located on this page or through links emailed to them from an ICERM email address ( ICERM never works with any conference booking vendors and never collects credit card information.
Those traveling with family who are interested in information about childcare and/or schools should contact
Technology Resources
Wireless internet access ("Brown-Guest") and wireless printing is available for all ICERM visitors. Eduroam is available for members of participating institutions. Thin clients in all offices and common areas provide open access to a web browser, SSH terminal, and printing capability. See our Technology Resources page for setup instructions and to learn about all available technology.
Discrimination and Harassment Policy
ICERM is committed to creating a safe, professional, and welcoming environment that benefits from the diversity and experiences of all its participants. Both the Brown University "Code of Conduct" and the "Discrimination and Workplace Harassment Policy" apply to all ICERM participants and staff. Participants with concerns or requests for assistance on a discrimination or harassment issue should contact the ICERM Director or Assistant Director; they are the responsible employees at ICERM under this policy.
Exploring Providence
Providence's world-renowned culinary scene provides ample options for lunch and dinner. Neighborhoods near campus, including College Hill Historic District, have many local attractions. Check out the map on our Explore Providence page to see what's near ICERM.

Visa Information

Contact for assistance.

Eligible to be reimbursed
B-1 or Visa Waiver Business (WB)
Ineligible to be reimbursed
B-2 or Visa Waiver Tourist (WT)
Already in the US?

F-1 and J-1 not sponsored by ICERM: need to obtain a letter approving reimbursement from the International Office of your home institution PRIOR to travel.

H-1B holders do not need letter of approval.

All other visas: alert ICERM staff immediately about your situation.

ICERM does not reimburse visa fees. This chart is to inform visitors whether the visa they enter the US on allows them to receive reimbursement for the items outlined in their invitation letter.

Financial Support

As this program is funded by the National Science Foundation (NSF), ICERM is required to collect your ORCID iD if you are receiving funding to attend this program. Be sure to add your ORCID iD to your Cube profile as soon as possible to avoid delaying your reimbursement.
Acceptable Costs
  • 1 roundtrip between your home institute and ICERM
  • Flights on U.S. or E.U. airlines – economy class to either Providence airport (PVD) or Boston airport (BOS)
  • Ground Transportation to and from airports and ICERM.
Unacceptable Costs
  • Flights on non-U.S. or non-E.U. airlines
  • Flights on U.K. airlines
  • Seats in economy plus, business class, or first class
  • Change ticket fees of any kind
  • Multi-use bus passes
  • Meals or incidentals
Advance Approval Required
  • Personal car travel to ICERM from outside New England
  • Multiple-destination plane ticket; does not include layovers to reach ICERM
  • Arriving or departing from ICERM more than a day before or day after the program
  • Multiple trips to ICERM
  • Rental car to/from ICERM
  • Flights on a Swiss, Japanese, or Australian airlines
  • Arriving or departing from airport other than PVD/BOS or home institution's local airport
  • 2 one-way plane tickets to create a roundtrip (often purchased from Expedia, Orbitz, etc.)
Reimbursement Request Form

Refer to the back of your ID badge for more information. Checklists are available at the front desk.

Reimbursement Tips
  • Scanned original receipts are required for all expenses
  • Airfare receipt must show full itinerary and payment
  • ICERM does not offer per diem or meal reimbursement
  • Allowable mileage is reimbursed at prevailing IRS Business Rate and trip documented via pdf of Google Maps result
  • Keep all documentation until you receive your reimbursement!
Reimbursement Timing

6 - 8 weeks after all documentation is sent to ICERM. All reimbursement requests are reviewed by numerous central offices at Brown who may request additional documentation.

Reimbursement Deadline

Submissions must be received within 30 days of ICERM departure to avoid applicable taxes. Submissions after thirty days will incur applicable taxes. No submissions are accepted more than six months after the program end.

Associated Semester Workshops

Mathematics of Reduced Order Models
Image for "Mathematics of Reduced Order Models "
Computational Statistics and Data-Driven Models
Image for "Computational Statistics and Data-Driven Models"