Estimation of Mean Costs in Censored Data (ccostr)
Implementation of estimators for inferring the mean of censored cost data. Including the estimators BT from Bang and Tsiatis (2000) <doi:10.1093/biomet/87.2.329> and ZT from Zhao and Tian (2001) <doi:10.1111/j.0006-341X.2001.01002.x>.

Design and Analysis of 2×2 Factorial Trial (factorial2x2)
Used for the design and analysis of a 2×2 factorial trial for a time-to-event endpoint. Performs power calculations and significance testing. Important reference papers include Slud EV. (1994) <https://…/8086609> Lin DY, Gong J, Gallo P, Bunn PH, Couper D. (2016) <DOI:10.1111/biom.12507> Leifer ES, Troendle JF, Kolecki A, Follmann DA. (2019) <https://…/Leifer%20et%20al%20Factorial.pdf>.

A ‘Shiny’ App for Exploration of Text Collections (corporaexplorer)
Facilitates dynamic exploration of text collections through an intuitive graphical user interface. The package contains 1) a helper function to convert a data frame to a ‘corporaexplorerobject’, 2) a ‘Shiny’ app for fast and flexible exploration of a ‘corporaexplorerobject’, and 3) a ‘Shiny’ app for simple retrieval/extraction of documents from a ‘corporaexplorerobject’ in a reading-friendly format. The intended primary audience is qualitatively oriented researchers who rely on close reading of textual documents as part of their academic activity. Auto-scrolling is enabled by the ‘jquery.scrollTo’ plugin, see <https://…/jquery.scrollTo>. For ‘shinytest’ to work, ‘PhantomJS’ (<http://…/> ) is required.

Divisive Hierarchical Clustering (dclust)
Contains a single function dclust() for divisive hierarchical clustering based on recursive k-means partitioning (k = 2). Useful for clustering large datasets where computation of a n x n distance matrix is not feasible (e.g. n > 10,000 records). For further information see Steinbach, Karypis and Kumar (2000) <http://…/docclusterKDDTMW00.pdf>.

Jack, Zonal, and Schur Polynomials (jack)
Symbolic calculation and evaluation of the Jack polynomials, zonal polynomials, and Schur polynomials. Mainly based on Demmel & Koev’s paper (2006) <doi:10.1090/S0025-5718-05-01780-1>. Zonal polynomials and Schur polynomials are particular cases of Jack polynomials. Zonal polynomials appear in random matrix theory. Schur polynomials appear in the field of combinatorics.

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