@conference {1013, title = {Increasing the homogeneity of CAT{\textquoteright}s item-exposure rates by minimizing or maximizing varied target functions while assembling shadow tests}, booktitle = {Paper presented at the annual meeting of the American Educational Research Association}, year = {2003}, note = {(PDF file, 418 K}, address = {Chicago IL}, author = {Li, Y. H. and Schafer, W. D.} }