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Upcoming Events

  • Ahmed Mohammed Abdelsadek Ahmed, MSc Thesis Defence, Computing Science
    10:00 AM - 12:00 PM
    October 27, 2014
    M.SC. THESIS DEFENCE Ahmed Mohammed Abdelsadek Ahmed BSc. in Computer Science, Cairo University, Egypt, 2010 Monday, October 27 th , 2014 SURREY CAMPUS Room Title DISTRIBUTED INDEX FOR MATCHING MULTIMEDIA OBJECTS Abstract This thesis presents the design and evaluation of DIMO, a distributed system for matching multimedia objects. DIMO provides multimedia applications with the function of finding the nearest neighbors on large-scale datasets. It also allows multimedia applications to define application-specific functions to further process the computed nearest neighbors. DIMO presents novel methods for partitioning, searching, and storing high-dimensional datasets on distributed infrastructures that support the MapReduce programming model. We implemented DIMO and extensively evaluated it on Amazon clusters with up to 128 machines. We experimented with large datasets of sizes up to 160 million data points extracted from images. Our results show that DIMO produces high precision when compared against the ground-truth nearest neighbors and it can elastically utilize varying amounts of computing resources. Additionally, DIMO outperforms the closest system in the literature by a large margin (up to 20\%) in terms of the achieved average precision, and requires less storage. M.Sc. Examining Committee: Dr. Mohamed Hefeeda, Senior Supervisor Dr. Greg Mori, Supervisor Dr. Joseph Peters, Examiner Dr. William Sumner, Chair
  • MASc Thesis Defense - Adam Cutbill - Mechatronics
    2:00 PM - 5:00 PM
    October 29, 2014
    Thesis Title: Development of an interactive engineering design optimization framework Chair: Dr. Behraad Bahreyni Committee: Dr. Gary Wang (Senior Supervisor) Dr. Krishna Vijayaraghavan (Supervisor) Internal Examiner: Dr. Edward Park Abstract Engineering optimization is often completely automated after initial problem formulation. Although purely algorithmic approaches are attractive, keeping the engineer out-of-the-loop also suffers from key drawbacks. First, problem formulation is a challenging task. A poorly formulated problem often extends optimization time or generates invalid results. Second, stakeholders may not trust the results of an optimization algorithm when presented without context. This thesis uses information visualization to keep designers in-the-loop during problem formulation, modeling, optimization, and result interpretation stages. Parallel coordinates is the central representation used, accompanied by two-dimensional projections for navigation and a scatterplot matrix for overview. Methods are presented to split the design and performance spaces into meaningful regions by clustering and by interaction. A new data mining technique is also presented to find relationships between black-box constraints, and to remove redundant and unimportant constraints. A software prototype is developed and successfully applied to an automotive assembly optimization problem. Keywords : Interactive optimization; engineering design; black-box optimization; information visualization; constraint redundancy identification; parallel coordinates
  • Kathlyn Gan, PhD Thesis Defence, MBB
    10:00 AM - 1:30 PM
    October 30, 2014
    Thesis Title: Dysregulation of neuronal calcium signaling impairs axonal transport independent of tau in a model of Alzheimer’s disease Dr. Michael Silverman (Sr. Supervisor) Dr. Nancy Hawkins Dr. Lynne Quarmby Dr. Michel Leroux (Public Examiner) Dr. Grace Stutzmann - Rosalind Franklin University/Chicago Medical School (External Examiner) Dr. Carl Lowenberger (Chair)
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  • Job Posting: Isotopes in Climate and Earth Systems October 24, 2014
    At the Bolin Centre Summer School 2015 you will learn about isotopes in biogeochemical cycles of climatically active substances such as water, carbon compounds and aerosols.

  • External Award: CFUW Scholarships for Women October 23, 2014
    The Canadian Federation of University Women (CFUW) is interested in providing female university students with information about its postgraduate funding for women