Search results for author:"Qi Diao"
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Educational and Psychological Measurement Vol. 74, No. 4 (August 2014) pp. 677–696
This study compared four item-selection procedures developed for use with severely constrained computerized adaptive tests (CATs). Severely constrained CATs refer to those adaptive tests that seek to meet a complex set of constraints that are often...
National Council on Measurement in Education (NCME) Annual Conference 2013 (2013)
This study compares the four existing procedures handling the item selection in severely constrained computerized adaptive tests (CAT). These procedures include weighted deviation model (WDM), weighted penalty model (WPM), maximum priority index ...
Applied Psychological Measurement Vol. 37, No. 5 (July 2013) pp. 361–374
Automated test assembly uses the methodology of mixed integer programming to select an optimal set of items from an item bank. Automated test-form generation uses the same methodology to optimally order the items and format the test form. From an...
Applied Psychological Measurement Vol. 35, No. 5 (July 2011) pp. 398–409
This article reviews the use of the software program lp_solve version 5.5 for solving mixed-integer automated test assembly (ATA) problems. The program is freely available under Lesser General Public License 2 (LGPL2). It can be called from the...
Journal of Educational Measurement Vol. 48, No. 2 (2011) pp. 206–222
In automated test assembly (ATA), the methodology of mixed-integer programming is used to select test items from an item bank to meet the specifications for a desired test form and optimize its measurement accuracy. The same methodology can be used...
Applied Psychological Measurement Vol. 37, No. 1 (January 2013) pp. 24–40
Variable-length computerized adaptive testing (VL-CAT) allows both items and test length to be "tailored" to examinees, thereby achieving the measurement goal (e.g., scoring precision or classification) with as few items as possible. Several popular ...