Computing and Mathematical Sciences Papers
This collection houses research from the Faculty of Computing and Mathematical Sciences at the University of Waikato.
All items in Research Commons are provided only to permit fair dealing for the purposes of research or private study. They are protected by copyright with all rights reserved unless otherwise indicated.
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Separation of variables for the Hamilton-Jacobi equation on complex projective spaces
(SIAM Publication, 1985)The additive separation of variables in the Hamilton-Jacobi equation and the multiplicative separation of variables in the Laplace-Beltrami equation are studied for the complex projective space C Pⁿ considered as a Riemannian ... -
Linear dimensionality reduction in linear time: Johnson-Lindenstrauss-type guarantees for random subspace
(2017)We consider the problem of efficient randomized dimensionality reduction with norm-preservation guarantees. Specifically we prove data-dependent Johnson-Lindenstrauss-type geometry preservation guarantees for Ho's random ... -
Using swarm optimization to enhance autoencoder’s images
(2017)Autoencoders learn data representations through reconstruction. Robust training is the key factor affecting the quality of the learned representations and, consequently, the accuracy of the application that use them. ... -
A study of children’s search query formulation habits
(2017)The strategies children use for digital information search in educational settings are rarely explored. Open questions remain on such fundamental issues as to which information-seeking strategies children employ, how they ... -
Sentence initial bundles: A comparative study between Chinese master’s L2 theses and published writing
(Asian EFL Journal Press, 2018)Lexical bundles, like recurrent multi-word combinations, act as discourse frames in a register and so are potentially significant as markers of expertise. The present study compared sentence initial lexical bundles (i.e. ... -
Good vibrations: artificial ambience-based relay attack detection
(IEEE Computer Society, 2018)Relay attacks are passive man in the middle attacks, aiming to extend the physical distance of devices involved in a transaction beyond their operating environment, within the restricted time-frame. In the field of ... -
Neural networks for predicting the output of wind flow simulations over complex topographies
(IEEE, 2018)We use deep learning techniques to model computational fluid dynamics (CFD) simulations of wind flow over a complex topography. Our motivation is to "speed up" the optimisation of CFD-based simulations (such as the 3D wind ... -
MaxGain: Regularisation of neural networks by constraining activation magnitudes
(Springer, 2019)Effective regularisation of neural networks is essential to combat overfitting due to the large number of parameters involved. We present an empirical analogue to the Lipschitz constant of a feed-forward neural network, ... -
Software for students to sketch interface designs
(ACM Press, 2003)This paper describes the development and evaluation of an electronic sketch environment for interface design. The tool provides a pen-based interface on an electronic whiteboard for designing Visual Basic forms, it is ... -
Proximity assurances based on natural and artificial ambient environments
(Spinger, 2017)Relay attacks are passive man-in-the-middle attacks that aim to extend the physical distance of devices involved in a transaction beyond their operating environment. In the field of smart cards, distance bounding protocols ... -
Acquiring metadata to support biographies of museum artefacts
(Springer, 2018)Museum collections are primarily experienced in physical museums. Metadata and linked data have the potential to support new models of interaction with heritage objects outside museums. Object biographies are a conceptual ... -
Estimating the growth in Mordell-Weil ranks and Shafarevich-Tate groups over Lie extensions
(Springer, 2017)Let E/Q be an elliptic curve, p > 3 a good ordinary prime for E, and K∞ a p-adic Lie extension of a number field k. Under some standard hypotheses, we study the asymptotic growth in both the Mordell–Weil rank and ... -
Use of video shadow for small group interaction awareness on a large interactive display surface
(Australian Computer Society, Inc, 2003)This paper reports work done as part of the Large Interactive Display Surface(LIDS) project at the University of Waikato. One application of the LIDS equipment is distributed meeting support. In this context large display ... -
Maximum margin principal components
(2017)Principal Component Analysis (PCA) is a very successful dimensionality reduction technique, widely used in predictive modeling. A key factor in its widespread use in this domain is the fact that the projection of a dataset ... -
Pushing the boundaries with bdrmapIT: mapping router ownership at internet scale
(ACM, 2018)Two complementary approaches to mapping network boundaries from traceroute paths recently emerged [27,31]. Both approaches apply heuristics to inform inferences extracted from traceroute measurement campaigns. bdrmap [27] ... -
Transferring sentiment knowledge between words and tweets
(IOS Press, 2018)Message-level and word-level polarity classification are two popular tasks in Twitter sentiment analysis. They have been commonly addressed by training supervised models from labelled data. The main limitation of these ... -
A virtual cocktail party: Supporting informal social interactions in a virtual conference
(ACM, 2018)Whilst the primary purpose of conferences is work — formal exchange and sharing of information — they almost always also include elements of play: Informal social and entertainment elements, such as receptions, dinners, ... -
Privacy protection for health information research in New Zealand district health boards
(New Zealand Medical Association, 2018)AIM: To examine the practices used by New Zealand’s 20 district health boards (DHBs) to protect patient privacy when patient information is used for research, and particularly practices for de-identifying information. METHOD: ... -
Congruences modulo ρ between ρ-wisted Hasse-Weil L-values
(American Mathematical Society, 2018)Suppose E₁ and E₂ are semistable elliptic curves over Q with good reduction at p, whose associated weight two newforms f₁ and f₂ have congruent Fourier coefficients modulo p. Let RS(E*, ρ) denote the algebraic padic L-value ... -
Generating species assemblages for restoration and experimentation: A new method that can simultaneously converge on average trait values and maximize functional diversity
(Wiley, 2018)1. Restoring resilient ecosystems in an era of rapid environmental change requires a flexible framework for selecting assemblages of species based on functional traits. However, current trait‐based models have been limited ...
