Computing Statistical Indices to Detect Answer Copying on
Multiple-Choice Tests
CopyDetect contains several IRT and non-IRT based statistical indices proposed in the literature for detecting answer copying on multiple-choice examinations. CopyDetect includes the indices that have been shown as effective and reliable based on the simulation studies. CopyDetect provides results for the Omega index (Wollack, 1996), Generalized Binomial Test (van der Linden & Sotaridona, 2006), K index (Holland, 1996), K1 and K2 indices (Sotaridona & Meijer, 2002), and S1 and S2 indices (Sotaridona & Meijer, 2003).

Contains several IRT and non-IRT based statistical indices proposed in the literature for detecting answer copying on multiple-choice examinations. Includes the indices that have been shown as effective and reliable based on the simulation studies. Provides results for the Omega index, Generalized Binomial Test, K index, K1 and K2 indices, and S1 and S2 indices.

Computing Response Similarity Indices for Multiple-Choice Tests
Contains several IRT and non-IRT based response similarity indices proposed in the literature for multiple-choice examinations such as the Omega index, Wollack (1997) <doi:10.1177/01466216970214002>; Generalized Binomial Test, van der Linden & Sotaridona (2006) <doi:10.3102/10769986031003283>; K index, K1 and K2 indices, Sotaridona & Meijer (2002) <doi:10.1111/j.1745-3984.2002.tb01138.x>;  and S1 and S2 indices, Sotaridona & Meijer (2003) <doi:10.1111/j.1745-3984.2003.tb01096.x>.

Baseline Correction for Copy Number Data from Cancer Samples
The 450k arrays are frequently used in the epigenetic studies, the copy number calling from the 450k data is possible but it faces some difficulties in cancer samples regarding the determination of the copy number status due to the false sample centering and baseline shifting. Without solving this issue the CN calling will be inaccurate. CopyNumber450kCancer-package was designed to correct the baseline in cancer samples using the Maximum Density Peak Estimation (MDPE) method.
The main advantages for CopyNumber450kCancer-package are: Fast (few seconds per sample), high accuracy rate, in-sample correction, no input parameters needed, low computer sources required, and adaptable for 450k-similar technologies.