• Efficient inference and computation of optimal alternatives for preference languages based on lexicographic models 

  Wilson, Nic; George, Anne-Marie (International Joint Conferences on Artificial Intelligence, 2017-08)

  We analyse preference inference, through consistency, for general preference languages based on lexicographic models. We identify a property, which we call strong compositionality , that applies for many natural kinds of ...
• Rescale-invariant SVM for binary classification 

  Montazery, Mojtaba; Wilson, Nic (International Joint Conferences on Artificial Intelligence, 2017-08)

  Support Vector Machines (SVM) are among the best-known machine learning methods, with broad use in different scientific areas. However, one necessary pre-processing phase for SVM is normalization (scaling) of features, ...
• Dominance and optimisation based on scale-invariant maximum margin preference learning 

  Montazery, Mojtaba; Wilson, Nic (International Joint Conferences on Artificial Intelligence, 2017-08)

  In the task of preference learning, there can be natural invariance properties that one might often expect a method to satisfy. These include (i) invariance to scaling of a pair of alternatives, e.g., replacing a pair ( ...
• Towards fast algorithms for the preference consistency problem based on hierarchical models 

  George, Anne-Marie; Wilson, Nic; O'Sullivan, Barry (AAAI Press / International Joint Conferences on Artificial Intelligence, 2016-07)

  In this paper, we construct and compare algorithmic approaches to solve the Preference Consistency Problem for preference statements based on hierarchical models. Instances of this problem contain a set of preference ...
• Computing possibly optimal solutions for multi-objective constraint optimisation with tradeoffs 

  Wilson, Nic; Razak, Abdul; Marinescu, Radu (AAAI Press / International Joint Conferences on Artificial Intelligence, 2015-07)

  Computing the set of optimal solutions for a multiobjective constraint optimisation problem can be computationally very challenging. Also, when solutions are only partially ordered, there can be a number of different natural ...

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