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</o:shapelayout></xml><![endif]--></head><body lang=DE link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Dear all,<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 am trying to run a co-evolution model for a bipartite network and I keep getting an error message after using the getEffects command: “Error in createEffects("behaviorBipartiteObjective2", varname, names(xx$depvars)[j], : empty effect group”.<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 am using RSIENA version 1.0.12.146 (16 05 2011) R-forge revision: 146.<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>When I run the same model on an older computer (Windows XP as compared to Windows 7 on the new one) using R-SIENA version 1.0.11.125 (07 11 2010) R-forge revision: 125, I don’t get this error message and the estimation works fine.<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>So I am wondering if this is a bug in the newer version of SIENA and someone could fix it for me? Or am I missing something else, maybe in my script (see below)?<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>Any help would be highly appreciated! Thanks a lot!<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>Best,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Julia<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><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>R-Script:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>network <- sienaNet(array(c(network.data.w1, network.data.w2, network.data.w3, network.data.w4), dim=c(451, 57, 4)), "bipartite", nodeSet=c("individuals", "companies"))<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>individuals <- sienaNodeSet(451, nodeSetName="individuals")<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>companies <- sienaNodeSet(57, nodeSetName="companies")<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>behavior.data <- as.matrix(read.table("behavior_2006-2009_451.dat"))<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>behavior.data [behavior.data %in% c(-999)] <- NA<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>behavior <- sienaNet( behavior.data, type = "behavior", nodeSet ='individuals')<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>myCoEvolutionData <- sienaDataCreate( network, behavior, nodeSets=list(individuals, companies))<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>myCoEvolutionEff <- getEffects( myCoEvolutionData )<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Optima","serif";mso-fareast-language:DE'>---<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Optima","serif";mso-fareast-language:DE'>Julia Brennecke<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Optima","serif";mso-fareast-language:DE'>Ph.D. Candidate</span><span lang=EN-US style='font-size:10.0pt;font-family:"Optima","serif";mso-fareast-language:DE'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Optima","serif";mso-fareast-language:DE'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Optima","serif";mso-fareast-language:DE'>Department of Business Administration<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Optima","serif";mso-fareast-language:DE'>Chair for Organization and HRM<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Optima","serif";mso-fareast-language:DE'>Albert-Ludwigs-University of Freiburg<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Optima","serif";mso-fareast-language:DE'>Platz der Alten Synagoge 1 (KG II)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Optima","serif";mso-fareast-language:DE'>79085 Freiburg (Germany)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Optima","serif";mso-fareast-language:DE'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Optima","serif";mso-fareast-language:DE'>Phone: +49 (0)761 / 203-2391<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Optima","serif";mso-fareast-language:DE'>Fax: +49 (0)761 / 203-2394<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Optima","serif";mso-fareast-language:DE'>E-Mail: </span><span style='font-size:10.0pt;font-family:"Optima","serif";mso-fareast-language:DE'><a href="mailto:Julia.Brennecke@vwl.uni-freiburg.de"><span style='color:blue'>Julia.Brennecke@vwl.uni-freiburg.de</span></a></span><span style='font-size:10.0pt;font-family:"Optima","serif";mso-fareast-language:DE'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Optima","serif";mso-fareast-language:DE'> <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Optima","serif";mso-fareast-language:DE'><a href="http://portal.uni-freiburg.de/bwlIII"><span style='color:blue'>http://portal.uni-freiburg.de/bwlIII</span></a></span><u><span style='font-size:10.0pt;font-family:"Optima","serif";color:blue;mso-fareast-language:DE'><o:p></o:p></span></u></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>