Daliborka Stanojevic

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We introduce the prize-collecting generalized minimum spanning tree problem. In this problem a network of node clusters needs to be connected via a tree architecture using exactly one node per cluster. Nodes in each cluster compete by offering a payment for selection. This problem is NP-hard, and we describe several heuristic strategies, including local(More)
T he second generation of optical networks with wavelength division multiplexing (WDM) is based on the notion of two layer networks, where the first layer represents a logical topology defined over the physical topology of optical fibers and the second layer represents multiple traffic requests combined (multiplexed) over the paths established in the(More)
In this paper, we present an exact solution procedure for the design of two-layer wavelength division multiplexing (WDM) optical networks with wavelength changers and bifurcated flows. This design problem closely resembles the traditional multicommodity flow problem, except that in the case of WDM optical networks, we are concerned with the routing of(More)
PURPOSE To develop and evaluate a population based planning scheme for disease site specific IMRT treatment planning. METHODS A database of previously treated locally advanced head and neck patients from our institution was retrospectively used for this study. The treatment targets involved primary tumor, high risk and low risk nodal volumes.(More)
PURPOSE Existing IMRT aperture selection process is not only highly computationally expensive, but also lacks mechanism that would utilize historical data on high-quality apertures. The purpose of our aperture classification model, apClass, is to alleviate both aforementioned issues by employing advanced machine-learning algorithms to "learn" the(More)
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