David W. Bulger

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Grover’s quantum computational search procedure can provide the basis for implementing adaptive global optimization algorithms. A brief overview of the procedure is given and a framework called Grover adaptive search is set up. A method of Dürr and Høyer and one introduced by the authors fit into this framework and are compared.
This article discusses the beneficial effects of setting goals in health behavior change and maintenance interventions. Goal setting theory predicts that, under certain conditions, setting specific difficult goals leads to higher performance when compared with no goals or vague, nonquantitative goals, such as "do your best." In contrast to the graduated,(More)
Grover’s quantum algorithm promises a quadratic acceleration for any problem formulable as a search. For unstructured search problems, its implementation and performance are well understood. The curse of dimensionality and the intractibility of the general global optimisation problem require any identifiable structure or regularity to be incorporated into a(More)
The vector gradient of a real-valued function f of a vector argument can be calculated using just two calls to a black-box quantum oracle for f . The mechanism is simple, and capitalises on the fact that, in the vicinity of a point x, e2πiλf(x) is periodic, with period parallel and inversely proportional to ∇f(x). A superposed state is created discretising(More)
Current feature selection methods for supervised classification of tissue samples from microarray data generally fail to exploit complementary discriminatory power that can be found in sets of features. Using a feature selection method with the computational architecture of the cross-entropy method, including an additional preliminary step ensuring a lower(More)
Due to an interaction of age, birth cohort, genetics, and the lifestyle factors inherent in the "college experience," some college students are at increased risk for mental health problems such as alcohol, tobacco, and other drug abuse; depression; stress and anxiety; and eating disorders. A program to promote self-monitoring of students' health behaviors(More)