Results 181 to 190 of about 150,052 (235)
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An Examination of Item Context Effects, DIF, and Gender DIF
Applied Measurement in Education, 2001This investigation examined whether the patterns of gender differential item functioning (DIF) present in parcels of items are influenced by changes in item position. Items were studied collectively to detect differential bundle functioning (DBF) on 2 forms of a test of mathematics for college freshmen. To investigate order effects, 2 forms of the test
Katherine E. Ryan, Shuwan Chiu
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DIF Algorithms for DCT and DST
ICASSP '85. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005Decimation-In-Frequency (DIF) algorithms for a family of discrete cosine and sine transforms (DCT) and (DST) are systematically developed, based on a radix-2 factorization of the transformation matrices. The results indicate these to be viable alternatives to existing algorithms for the calculation of these discrete transforms.
Patrick C. Yip, Kamisetty Ramamohan Rao
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The DIF-Free-Then-DIF Strategy for the Assessment of Differential Item Functioning
Educational and Psychological Measurement, 2012The DIF-free-then-DIF (DFTD) strategy consists of two steps: (a) select a set of items that are the most likely to be DIF-free and (b) assess the other items for DIF (differential item functioning) using the designated items as anchors. The rank-based method together with the computer software IRTLRDIF can select a set of DIF-free polytomous items very
Wen-Chung Wang +2 more
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The Effect of Propensity Scores on DIF Analysis: Inference on the Potential Cause of DIF
International Journal of Testing, 2014Differential item functioning (DIF) analysis is important in terms of test fairness. While DIF analyses have mainly been conducted with manifest grouping variables, such as gender or race/ethnicity, it has been recently claimed that not only the grouping variables but also contextual variables pertaining to examinees should be considered in DIF ...
HyeSun Lee, Kurt Geisinger
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Functional DIF for Rapid Prototyping
2008 The 19th IEEE/IFIP International Symposium on Rapid System Prototyping, 2008Dataflow formalisms have provided designers of digital signal processing systems with optimizations and guarantees to arrive at quality prototypes quickly. As system complexity increases, designers are expressing more types of behavior in dataflow languages to retain these implementation benefits.
William Plishker +4 more
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NodeGit : Diffing and Merging Node Graphs
ACM Transactions on Graphics, 2023The use of version control is pervasive in collaborative software projects. Version control systems are based on two primary operations: diffing two versions to compute the change between them and merging two versions edited concurrently. Recent works provide solutions to diff and merge graphics assets such as images, meshes and scenes.
Rinaldi E., Sforza D., Pellacini F.
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Journal of Educational Measurement, 2001
Differential Item Functioning (DIF) is traditionally used to identify different item performance patterns between intact groups, most commonly involving race or sex comparisons. This study advocates expanding the utility of DIF as a step in construct validation.
Cindy M. Walker, S. Natasha Beretvas
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Differential Item Functioning (DIF) is traditionally used to identify different item performance patterns between intact groups, most commonly involving race or sex comparisons. This study advocates expanding the utility of DIF as a step in construct validation.
Cindy M. Walker, S. Natasha Beretvas
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Simultaneous DIF Amplification and Cancellation: ShealyâStout's Test for DIF
Journal of Educational Measurement, 1993The present study investigates the phenomena of simultaneous DIF amplification and cancellation and SIBTEST's role in detecting such. A variety of simulated test data were generated for this purpose. In addition, real test data from various sources were analyzed.
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Impact of unbalanced DIF item proportions on group-specific DIF identification
Communications in Statistics - Theory and Methods, 2018AbstractDifferences in type I error and power rates for majority and minority groups are investigated when differential item functioning (DIF) contamination in a test is unbalanced.
Ronna C. Turner, Elizabeth A. Keiffer
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Uniform DIF and DIF Defined by Differences in Item Response Functions
Journal of Educational and Behavioral Statistics, 1998Uniform differential item functioning (DIF) exists when the statistical relationship between item response and group is constant for all levels of a matching variable. Two other types of DIF are defined based on differences in item response functions (IRFs) among the groups of examinees: unidirectional DIF (the IRFs do not cross) and parallel DIF (the ...
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