Now showing items 1-20 of 881

    • Affective Sentiment and Emotional Analysis of Pull Request Comments on GitHub 

      Rishi, Deepak (University of Waterloo, 2017-12-15)
      Sentiment and emotional analysis on online collaborative software development forums can be very useful to gain important insights into the behaviors and personalities of the developers. Such information can later on be ...
    • Efficient Structure-aware OLAP Query Processing over Large Property Graphs 

      Zhang, Yan (University of Waterloo, 2017-12-14)
      Property graph model is a semantically rich model for real-world applications that represent their data as graphs, e.g., communication networks, social networks, financial transaction networks. On-Line Analytical Processing ...
    • Securing Cloud Computations with Oblivious Primitives from Intel SGX 

      Sasy, Sajin (University of Waterloo, 2017-12-12)
      We are witnessing a confluence between applied cryptography and secure hardware systems in enabling secure cloud computing. On one hand, work in applied cryptography has enabled efficient, oblivious data-structures and ...
    • A Positive-definite Cut-cell Method for Strong Two-way Coupling Between Fluids and Deformable Bodies 

      Zarifi, Omar; Batty, Christopher (Association for Computing Machinery, 2017-07-28)
      We present a new approach to simulation of two-way coupling between inviscid free surface fluids and deformable bodies that exhibits several notable advantages over previous techniques. By fully incorporating the dynamics ...
    • A Multi-scale Model for Simulating Liquid-hair Interactions 

      Fei, Yun (Raymond); Maia, Henrique Teles; Batty, Christopher; Zheng, Changxi; Grinspun, Eitan (Association for Computing Machinery, 2017-07-20)
      The diverse interactions between hair and liquid are complex and span multiple length scales, yet are central to the appearance of humans and animals in many situations. We therefore propose a novel multi-component simulation ...
    • Variational Stokes: A Unified Pressure-viscosity Solver for Accurate Viscous Liquids 

      Larionov, Egor; Batty, Christopher; Bridson, Robert (Association for Computing Machinery, 2017-07-20)
      We propose a novel unsteady Stokes solver for coupled viscous and pressure forces in grid-based liquid animation which yields greater accuracy and visual realism than previously achieved. Modern fluid simulators treat ...
    • Power Diagrams and Sparse Paged Grids for High Resolution Adaptive Liquids 

      Aanjaneya, Mridul; Gao, Ming; Liu, Haixiang; Batty, Christopher; Sifakis, Eftychios (Association for Computing Machinery, 2017-07-20)
      We present an efficient and scalable octree-inspired fluid simulation framework with the flexibility to leverage adaptivity in any part of the computational domain, even when resolution transitions reach the free surface. ...
    • The Limited Effectiveness of Neural Networks for Simple Question Answering on Knowledge Graphs 

      Mohammed, Salman (University of Waterloo, 2017-12-08)
      Simple factoid question answering (QA) is a task, where the questions can be answered by looking up a single fact in the knowledge base (KB). However, this QA task is difficult, since retrieving a single supporting fact ...
    • A TMT-labeled Spectral Library for Peptide Sequencing 

      Shen, Jianqiao (University of Waterloo, 2017-12-07)
      Tandem mass spectrometry (MS/MS) is widely used nowadays for bioinformaticians to identify peptides and proteins. Three major peptide identification approaches and tools have been developed over the past two decades: ...
    • Impulse Control in Finance: Numerical Methods and Viscosity Solutions 

      Azimzadeh, Parsiad (University of Waterloo, 2017-12-05)
      The goal of this thesis is to provide efficient and provably convergent numerical methods for solving partial differential equations (PDEs) coming from impulse control problems motivated by finance. Impulses, which are ...
    • On Achieving High Survivability in Virtualized Data Centers 

      Rabbani, Md Golam; Zhani, Mohamed Faten; Boutaba, Raouf (Institute of Electronics, Information and Communication Engineers, 2014-01-01)
      As businesses are increasingly relying on the cloud to host their services, cloud providers are striving to offer guaranteed and highly-available resources. To achieve this goal, recent proposals have advocated to offer ...
    • Planning and Deployment of Wireless Sensor Networks 

      Boutaba, Raouf; Achir, Nadjib; St-Hilaire, Marc; Nakamura, Eduardo Freire (SAGE Publications (UK and US): Creative Commons Attribution, 2014-01-08)
      Editorial introduction to special issue on Planning and Deployment of Wireless Sensor Networks published in the International Journal of Distributed Sensor Networks, 9(5). 2014.
    • Internet of Drones 

      Gharibi, Mirmojtaba; Boutaba, Raouf; Waslander, Steven L. (Institute of Electrical and Electronics Engineers (IEEE): OAJ, 2016-03-02)
      The Internet of Drones (IoD) is a layered network control architecture designed mainly for coordinating the access of unmanned aerial vehicles to controlled airspace, and providing navigation services between locations ...
    • Perspectives on software-defined networks: interviews with five leading scientists from the networking community 

      Batista, Daniel M.; Blair, Gordon; Kon, Fabio; Boutaba, Raouf; Hutchison, David; Jain, Raj; Ramjee, Ramachandran; Rothenberg, Christian Esteve (SpringerOpen, 2015-10-30)
      Software defined Networks (SDNs) have drawn much attention both from academia and industry over the last few years. Despite the fact that underlying ideas already exist through areas such as P2P applications and active ...
    • WatchTrace: Design and Evaluation of an At-Your-Side Gesture Paradigm 

      Siddhpuria, Shaishav (University of Waterloo, 2017-11-16)
      In this thesis, we present the exploration and evaluation of a gesture interaction paradigm performed with arms at rest at the side of one's body. This gesture stance is informed persisting challenges in mid-air arm gesture ...
    • Syntactic Complexities of Six Classes of Star-Free Languages 

      Brzozowski, Janusz; Li, Baiyu; Liu, David (Otto-von-Guericke-Universit¨at Magdeburg, 2012)
      The syntactic complexity of a regular language is the cardinality of its syntactic semi-group. The syntactic complexity of a subclass of regular languages is the maximal syntactic complexity of languages in that subclass, ...
    • Quotient complexity of ideal languages 

      Brzozowski, Janusz; Jirásková, Galina; Li, Baiyu (Elsevier, 2013-01-28)
      A language L over an alphabet Σ is a right (left) ideal if it satisfies L=LΣ∗ (L=Σ∗L). It is a two-sided ideal if L=Σ∗LΣ∗, and an all-sided ideal if L=Σ∗L, the shuffle of Σ∗ with L. Ideal languages are not only of interest ...
    • Syntactic complexity of prefix-, suffix-, bifix-, and factor-free regular languages 

      Brzozowski, Janusz; Li, Baiyu; Ye, Yuli (Elsevier, 2012-08-31)
      The syntactic complexity of a regular language is the cardinality of its syntactic semigroup. The syntactic complexity of a subclass of the class of regular languages is the maximal syntactic complexity of languages in ...
    • Most Complex Regular Ideal Languages 

      Liu, Bo Yang Victor; Davies, Sylvie; Brzozowski, Janusz (Discrete Mathematics and Theoretical Computer Science, 2016-10-17)
      A right ideal (left ideal, two-sided ideal) is a non-empty language $L$ over an alphabet $\Sigma$ such that $L=L\Sigma^*$ ($L=\Sigma^*L$, $L=\Sigma^*L\Sigma^*$). Let $k=3$ for right ideals, 4 for left ideals and 5 for ...
    • Trust Region Methods for Training Neural Networks 

      Kinross, Colleen (University of Waterloo, 2017-11-09)
      Artificial feed-forward neural networks (ff-ANNs) serve as powerful machine learning models for supervised classification problems. They have been used to solve problems stretching from natural language processing to ...

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