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</o:shapelayout></xml><![endif]--></head><body lang=ES link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Hello,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I have been asked to implement the(</span>ì<span lang=EN-US> + lambda) selection strategy with GALIB. Basically, in each evolution, a new temporary population with the same size as the original population would be created, both populations should be merged and a new population would be created with the popsize best individuals. <br><br>So basically for the selection of new population:<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US style='font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>For each generation, offspring are generated from </span>ì<span lang=EN-US> parents and crossed and mutated<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US style='font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>New population is the best </span>ì<span lang=EN-US> individuals selected from the </span>ì <span lang=EN-US>parents and lambda offspring<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US style='font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span lang=EN-US>Implements elitism<o:p></o:p></span></p><p class=MsoListParagraph><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I have been taking a look to the galib code of the steadystate algorithm and I think this is precisely the strategy it implements. Should that be the case, I do not need to extend GALIB, I just have to use the existing steadyState algorithm with nReplacement = popsize, and I would be implementing this selection strategy. Is this assumption correct, or am I missing something here?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Thanks in advance,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Natalia Iglesias<br><br><o:p></o:p></span></p></div></body></html>