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An Introduction to Recursive Partitioning Using the RPART Routines
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The tree is constructed: Splitting criteria, building the tree, variable importance, and more.Abstract:
3 Building the tree 5 3.1 Splitting criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.2 Incorporating losses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.2.1 Generalized Gini index . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.2.2 Altered priors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.3 Example: Stage C prostate cancer (class method) . . . . . . . . . . . . . . 10 3.4 Variable importance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11read more
Citations
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The American College of Rheumatology preliminary diagnostic criteria for fibromyalgia and measurement of symptom severity.
Frederick Wolfe,Daniel J. Clauw,Mary Ann Fitzcharles,Don L. Goldenberg,Robert S. Katz,Philip J. Mease,Anthony S. Russell,I. Jon Russell,John B. Winfield,Muhammad B. Yunus +9 more
TL;DR: To develop simple, practical criteria for clinical diagnosis of fibromyalgia that are suitable for use in primary and specialty care and that do not require a tender point examination, and to provide a severity scale for characteristic fibromyalgic symptoms.
Journal ArticleDOI
Summary Report on the Graded Prognostic Assessment: An Accurate and Facile Diagnosis-Specific Tool to Estimate Survival for Patients With Brain Metastases
Paul W. Sperduto,Norbert Kased,David Roberge,Zhiyuan Xu,Ryan Shanley,Xianghua Luo,Penny K. Sneed,Samuel T. Chao,Robert J. Weil,John H. Suh,Amit Bhatt,Ashley W. Jensen,Paul D. Brown,Helen A. Shih,John P. Kirkpatrick,Laurie E. Gaspar,John B. Fiveash,Veronica Chiang,Jonathan P.S. Knisely,Christina Maria Sperduto,Nan Lin,Minesh P. Mehta +21 more
TL;DR: These indices and related worksheet provide an accurate and facile diagnosis-specific tool to estimate survival, potentially select appropriate treatment, and stratify clinical trials for patients with brain metastases.
Journal ArticleDOI
Leadership, social capital and incentives promote successful fisheries
TL;DR: Examining 130 co-managed fisheries in a wide range of countries with different degrees of development, ecosystems, fishing sectors and type of resources demonstrates the critical importance of prominent community leaders and robust social capital for successfully managing aquatic resources and securing the livelihoods of communities depending on them.
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Partykit: a modular toolkit for recursive partytioning in R
Torsten Hothorn,Achim Zeileis +1 more
TL;DR: A brief overview of the R package partykit and its design is given while more detailed discussions of items (a)-(d) are available in vignettes accompanying the package.
Journal ArticleDOI
2012 provisional classification criteria for polymyalgia rheumatica: a European League Against Rheumatism/American College of Rheumatology collaborative initiative
Bhaskar Dasgupta,Marco A. Cimmino,Hilal Maradit-Kremers,Wolfgang A. Schmidt,Michael Schirmer,Carlo Salvarani,Artur Bachta,Christian Dejaco,Christina Duftner,Christina Duftner,Hanne Slott Jensen,Pierre Duhaut,Gyula Poór,Novák Pál Kaposi,Peter Mandl,Peter V. Balint,Zsuzsa Schmidt,Annamaria Iagnocco,Carlotta Nannini,Fabrizio Cantini,Pierluigi Macchioni,Nicolò Pipitone,Montserrat Del Amo,Georgina Espígol-Frigolé,Maria C. Cid,Víctor M. Martínez-Taboada,Elisabeth Nordborg,Haner Direskeneli,Sibel Zehra Aydin,Khalid Ahmed,Brian L. Hazleman,B Silverman,Colin T. Pease,Richard J. Wakefield,Raashid Luqmani,Andy Abril,Clement J. Michet,Ralph Marcus,Neil J. Gonter,Mehrdad Maz,Rickey E. Carter,Cynthia S. Crowson,Eric L. Matteson +42 more
TL;DR: According to these provisional classification criteria, patients ≥50 years old presenting with bilateral shoulder pain, not better explained by an alternative pathology, can be classified as having PMR in the presence of morning stiffness>45 minutes, elevated CRP and/or ESR and new hip pain.
References
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Classification and Regression Trees.
Book
Classification and regression trees
TL;DR: The methodology used to construct tree structured rules is the focus of a monograph as mentioned in this paper, covering the use of trees as a data analysis method, and in a more mathematical framework, proving some of their fundamental properties.
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Martingale-based residuals for survival models
TL;DR: In this paper, a set of n independent subjects such that the counting process Ni {Ni(t), t } O} for the ith subject in the set indicates the number of observed events experienced over time t. The sample paths of the Ni are step functions with jumps of size +1 and with Ni(0) = 0.
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Tree-based models
Linda A. Clark,Daryl Pregibon +1 more
TL;DR: In this article, the authors describe S functions for tree-based modeling, which is an alternative to linear and additive models for regression problems and to linear logistic and additive logistic models for classification problems.
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Relative risk trees for censored survival data.
Michael LeBlanc,John W. Crowley +1 more
TL;DR: A method is developed for obtaining tree-structured relative risk estimates for censored survival data using a recursive partitioning algorithm that adopts most aspects of the widely used Classification and Regression Tree (CART) algorithm.