I DO need help for this classification problem. The data is the classical Fisher's Iris one. <br/>And the multinomial logit model was used for finding a classification rule. <br/><br/><br/>The problem of this model is that for setosa/virginica, the numerical difficulties occured and the coefficients of logit(setosa/virginica)<br/>actually failed to converge. <br/><br/>The output I enclosed here includes the Logistic Regression Table and Descriptive Statistics for four measurements by Species. <br/>U may somehow notice that the poor fit for logit(setosa/virginica) may due to the distinct difference between these two species. <br/><br/>My task is to, basd one the poor fitted model and these descriptive statistics, find a classification rule for the iris variety. <br/><br/>Hope someone here could help me. Many many many thanks sin....<br/><br/>

[此贴子已经被作者于2008-10-8 21:18:55编辑过]