A general hill-climbing attack algorithm based on Bayesian adaption is presented. The approach uses the scores provided by the matcher to adapt a global distribution computed from a development set of users, to the local specificities of the client being attacked. The proposed attack is evaluated on a competitive feature-based signature verification system over the 330 users of the MCYT databas...

This paper provides guidelines to design climbers considering a landscape shape under study. In particular, we aim at competing best improvement and first improvement strategies, as well as evaluating the behavior of different neutral move policies. Some conclusions are assessed by an empirical analysis on non-neutral (NK-) and neutral (quantized NK-) landscapes. Experiments show the ability of...

James P. MADIGAN*†, Brian O. BODEMANN†, Donita C. BRADY†‡, Brian J. DEWAR‡, Patricia J. KELLER†‡, Michael LEITGES§, Mark R. PHILIPS‖, Anne J. RIDLEY¶, Channing J. DER*‡** and Adrienne D. COX*†‡**1 *Curriculum in Genetics and Molecular Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, U.S.A., †Department of Radiation Oncology, University of North Carolina at Chapel Hil...

This paper presents new results showing that a very simple stochastic hill climbing algorithm is as good or better than more complex metaheuristic methods for solving an oversubscribed scheduling problem: scheduling communication contacts on the Air Force Satellite Control Network (AFSCN). The empirical results also suggest that the best neighborhood construction choices produce a search that i...

  Background: Open Bankart surgery is the main treatment procedure in patients with recurrent anterior shoulder dislocation, especially in cases with glenoid bone defect. The goal of this study was to determine the outcomes after open Bankart surgery in cases of recurrent anterior shoulder dislocation with glenoid bone defects and concomitant Hill-Sachs lesions. Methods: Between 2006 and 2010,...

The published results from trials used to determine nutrient and lime requirements of legume-based pastures in South Island hill high country are summarised. Most the research 1950’s 1960’s found that sulphur (S) alone was required on less weathered leached Semi-arid Pallic soils but both S phosphorus (P) were more Brown soils. severe lack necessitated application rapidly plant-available as gyp...

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Anesthesia Differentially Modulates Spontaneous Network Dynamics by Cortical Area and Layer 1 2 Running Head: Differential Modulation of Cortical Activity by Anesthesia 3 4 5 Kristin K. Sellers, Davis V. Bennett, Axel Hutt, and Flavio Frohlich 6 7 1 Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill NC 27599 8 2 Neurobiology Curriculum, University of North Caroli...

This paper presents an Improved Memetic Algorithm (IMA) designed to compute near-optimal solutions for the antibandwidth problem. It incorporates two distinguishing features: an efficient heuristic to generate a good quality initial population and a local search operator based on a Stochastic Hill Climbing algorithm. The most suitable combination of parameter values for IMA is determined by emp...

In this paper, we derive a method to refine a Bayes network diagnostic model by exploiting constraints implied by expert decisions on test ordering. At each step, the expert executes an evidence gathering test, which suggests the test’s relative diagnostic value. We demonstrate that consistency with an expert’s test selection leads to non-convex constraints on the model parameters. We incorpora...