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DTSTART:20070311T020000
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DTSTAMP:20250127T090445
DTSTART;TZID=America/Detroit:20250415T160000
DTEND;TZID=America/Detroit:20250415T170000
SUMMARY:Meeting:Psycholinguistics
DESCRIPTION:The psycholinguistics discussion group is a meeting of several lab groups from Linguistics\, Psychology\, and other departments that all share common interests in language processing\, including comprehension\, production\, and acquisition. The discussion group is an informal venue for presenting research findings\, for developing new ideas\, and for connecting with the many language scientists across the University who are interested in the psychology and neuroscience of human language.
UID:131899-21869377@events.umich.edu
URL:https://events.umich.edu/event/131899
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Discussion Group,Language Processing,Psychology
LOCATION:Off Campus Location - 403 Lorch
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20250321T082539
DTSTART;TZID=America/Detroit:20250415T160000
DTEND;TZID=America/Detroit:20250415T170000
SUMMARY:Workshop / Seminar:Ziwet Colloquium Lecture: From Phase Separation in Heterogeneous Media to Learning Training Schemes for Image Denoising
DESCRIPTION:What do these two themes have in common? Both are treated variationally\, both deal with energies of different dimensionalities\, concepts of geometric measure theory prevail in both\, and higher order penalizations are considered. Will learning training schemes for choosing these penalizations in imaging may be of use in phase transitions?\n\nPhase Separation in Heterogeneous Media: Modern technologies and biological systems\, such as temperature-responsive polymers and lipid rafts\, take advantage of engineered inclusions\, or natural heterogeneities of the medium\, to obtain novel composite materials with specific physical properties. To model such situations using a variational approach based on the gradient theory of phase transitions\, the potential and the wells may have to depend on the spatial position\, even in a discontinuous way\, and different regimes should be considered.\n\nIn the critical case where the scale of the small heterogeneities is of the same order of the scale governing the phase transition and the wells are fixed\, the interaction between homogenization and the phase transitions process leads to an anisotropic interfacial energy. The supercritical case for fixed wells is also addressed\, now leading to an isotropic interfacial energy. In the subcritical case with moving wells\, where the heterogeneities of the material are of a larger scale than that of the diffuse interface between different phases\, it is observed that there is no macroscopic phase separation and that thermal fluctuations play a role in the formation of nanodomains.\n\nLearning Training Schemes for Image Denoising: Due to their ability to handle discontinuous images while having a well-understood behavior\, regularizations with total variation (TV) and total generalized variation (TGV) are some of the best known methods in image denoising. However\, like other variational models including a fidelity term\, they crucially depend on the choice of their tuning parameters. A remedy is to choose these automatically through multilevel approaches\, for example by optimizing performance on noisy/clean image training pairs. Such methods with space-dependent parameters which are piecewise constant on dyadic grids are considered\, with the grid itself being part of the minimization. Existence of minimizers for discontinuous parameters is established\, and it is shown that box constraints for the values of the parameters lead to existence of finite optimal partitions. Improved performance on some representative test images when compared with constant optimized parameters is demonstrated.
UID:123915-21852177@events.umich.edu
URL:https://events.umich.edu/event/123915
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Free,Lecture,Mathematics,seminar
LOCATION:East Hall - 1360
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20250415T162026
DTSTART;TZID=America/Detroit:20250415T163000
DTEND;TZID=America/Detroit:20250415T180000
SUMMARY:Workshop / Seminar:Org Basics 2024-25
DESCRIPTION:
UID:125167-21858861@events.umich.edu
URL:https://events.umich.edu/event/125167
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Sessions
LOCATION:Michigan Union - 2210 ABC (2nd Floor)
CONTACT:
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