In this paper we propose a Multi-Objective Ant Colony Optimization (MOACO) algorithm called CHAC, which has been designed to solve the problem of finding the path on a map (corresponding to a simulated battlefield) that minimizes resources while maximizing safety. CHAC has been tested with two different state transition rules: an aggregative function that combines the heuristic and pheromone in...

We consider the framework of average aggregative games, where the cost function of each agent depends on his own strategy and on the average population strategy. We focus on the case in which the agents are coupled not only via their cost functions, but also via affine constraints on the average of the agents’ strategies. We propose a distributed algorithm that achieves an almost Nash equilibri...

BACKGROUND Guideline adherence in physical therapy is far from optimal, which has consequences for the effectiveness and efficiency of physical therapy care. Programmes to enhance guideline adherence have, so far, been relatively ineffective. We systematically developed a theory-based Quality Improvement in Physical Therapy (QUIP) programme aimed at the individual performance level (practicing ...

OBJECTIVE Little is known about the guideline adherence of nurses to chemotherapy administration guidelines. We determined the guideline adherence of nurses to the Chemotherapy Administration Safety Standards and the relationship between demographic characteristics and guideline adherence. METHODS Survey sheets containing two questions on demographic characteristics and 16 questions on the gu...

BACKGROUND Evidence-based practice has become a major issue in physical therapy. Many evidence-based guidelines, however, are not used extensively after dissemination, and interventions aimed at increasing guideline adherence often have limited effects. OBJECTIVE As a prerequisite for changing this situation, the aims of this study were to gain an in-depth understanding of the determinants of...

BACKGROUND The link between guideline adherence and outcomes is a highly demanded issue in diabetes care. We aimed to assess the adherence to guidelines and its impact on hospitalization using a simple set of performance measures among patients with diabetes. METHODS We performed a retrospective cohort study, using health care claims data for adult patients with treated diabetes (2011-2013). ...

objective: bipolar disorder is a severe mental disorder, and its prevalence is around 1% to 2%. despite a vast literature around bipolar disorder, the reasons of its nonadherence and rehospitalization is still obscure. several symptoms of bipolar disorder include changes in activity level, cognitive abilities, speech, and vegetative functions, such as sleep, sexual activity, as well as aggressi...

We study the evolution of preference interdependence in aggregative games which are symmetric with respect to material payo¤s but asymmetric with respect to player objective functions. We identify a class of aggregative games whose equilibria have the property that the players with interdependent preferences (who care not only about their own material payo¤s but also about their payo¤s relative...

Formulating high-quality queries is a key aspect of context-based search. However, determining the effectiveness of a query is challenging because multiple objectives, such as high precision and high recall, are usually involved. In this work we study techniques that can be applied to evolve contextualized queries when the criteria for determining query quality are based on multiple objectives....

We develop an aggregative games approach to study oligopolistic price competition with multiproduct firms. We introduce a new class of IIA demand systems, derived from discrete/continuous choice, and nesting CES and logit demands. The associated pricing game with multiproduct firms is aggregative and a firm’s optimal price vector can be summarized by a uni-dimensional sufficient statistic, the ...