?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fwww.eledia.org%2Fstudents-reports%2F563%2F&rft.title=Improving+the+Effectiveness+of+GA-Based+Approaches+to+Microwave+Imaging+through+an+Innovative+Parabolic+Crossover&rft.creator=Bort%2C+Emmanuele&rft.creator=Massa%2C+Andrea&rft.creator=Rocca%2C+Paolo&rft.subject=TU+Technical+Reports+and+Publications&rft.description=Several+studies+have+shown+that+evolutionary-based+approaches+are+efficient%2C+effective%2C+and+robust+optimization+methods+for+microwave+imaging.+However%2C+the+convergence+rate+of+such+techniques+still+does+not+meet+all+the+requirements+for+on-line+real+applications+and+attempting+to+speed+up+the+optimization+is+needed.+In+this+paper%2C+a+new+local+search+operator%2C+the+fitness-based+parabolic+crossover%2C+is+proposed+and+embedded+into+a+real-coded+genetic+algorithm.+Such+a+modification+enables+the+imaging+method+to+achieve+a+better+trade-off+between+convergence+rate+and+robustness+to+false+solutions.+By+exploiting+the+relationship+between+the+crossover+operation+and+the+local+quadratic+behavior+of+the+functional%2C+it+is+possible+to+increase+the+convergence+rate+of+the+genetic+algorithm+and+thereby+to+obtain+an+acceptable+solution+with+a+smaller+number+of+fitness+function+evaluations.+The+effectiveness+of+the+modified+genetic-algorithm-based+imaging+method+is+assessed+by+considering+some+synthetic+test+cases+different+in+dimensions+and+noisy+conditions.+The+obtained+numerical+results+provide+an+empirical+evidence+of+the+efficiency+and+reliability+of+the+proposed+modified+evolutionary+algorithm.&rft.date=2004-10&rft.type=Technical+Report&rft.type=NonPeerReviewed&rft.format=text&rft.language=en&rft.identifier=http%3A%2F%2Fwww.eledia.org%2Fstudents-reports%2F563%2F1%2FDIT-04-096.pdf&rft.identifier=++Bort%2C+Emmanuele+and+Massa%2C+Andrea+and+Rocca%2C+Paolo++(2004)+Improving+the+Effectiveness+of+GA-Based+Approaches+to+Microwave+Imaging+through+an+Innovative+Parabolic+Crossover.++%5BTechnical+Report%5D++++(In+Press)++