01453nam0 2200349 450 00002156220081014150404.088-7166-216-420080523d1995----km-y0itaa50------baitaIT<<La>> chimica della menteassociazione delle idee e scienza della natura umana da Locke a SpencerChiara GiuntiniFirenze<<Le>> Letterec1995377 p.24 cm.Storia della filosofia e del pensiero scientificoUniversità degli studi di Torino, Fondo di studi Parini-Chirio22001Storia della filosofia e del pensiero scientificoUniversità degli studi di Torino, Fondo di studi Parini-Chirio2IdeaConoscenza121.4(21. ed.)Gnoseologia. Struttura della conoscenzaGiuntini,Chiara218246Università degli studi<Torino>ITUniversità della Basilicata - B.I.A.RICAunimarc000021562Chimica della mente88846UNIBASLETTERESTD0620120080523BAS011152STD0620120080523BAS011201TTM3020081014BAS011455TTM3020081014BAS011504BAS01BAS01BOOKBASA1Polo Storico-UmanisticoGENCollezione generaleFM/94871 10B94871L948712008052302Prestabile Generale05637nam 2200733 a 450 991102004990332120200520144314.09786611841003978128184100112818410059780470770771047077077597804707707880470770783(CKB)1000000000549390(EBL)366774(OCoLC)476201818(SSID)ssj0000206842(PQKBManifestationID)11180050(PQKBTitleCode)TC0000206842(PQKBWorkID)10246504(PQKB)10229985(MiAaPQ)EBC366774(PPN)263348644(Perlego)2772175(EXLCZ)99100000000054939020080124d2008 uy 0engur|n|---|||||txtccrMultivariable model-building a pragmatic approach to regression analysis based on fractional polynomials for modelling continuous variables /Patrick Royston, Willi SauerbreiChichester, England ;Hoboken, NJ John Wileyc20081 online resource (323 p.)Wiley series in probability and statisticsDescription based upon print version of record.9780470028421 0470028424 Includes bibliographical references (p. 271-283) and index.Multivariable Model-Building; Contents; Preface; 1 Introduction; 1.1 Real-Life Problems as Motivation for Model Building; 1.1.1 Many Candidate Models; 1.1.2 Functional Form for Continuous Predictors; 1.1.3 Example 1: Continuous Response; 1.1.4 Example 2: Multivariable Model for Survival Data; 1.2 Issues in Modelling Continuous Predictors; 1.2.1 Effects of Assumptions; 1.2.2 Global versus Local Influence Models; 1.2.3 Disadvantages of Fractional Polynomial Modelling; 1.2.4 Controlling Model Complexity; 1.3 Types of Regression Model Considered; 1.3.1 Normal-Errors Regression1.3.2 Logistic Regression1.3.3 Cox Regression; 1.3.4 Generalized Linear Models; 1.3.5 Linear and Additive Predictors; 1.4 Role of Residuals; 1.4.1 Uses of Residuals; 1.4.2 Graphical Analysis of Residuals; 1.5 Role of Subject-Matter Knowledge in Model Development; 1.6 Scope of Model Building in our Book; 1.7 Modelling Preferences; 1.7.1 General Issues; 1.7.2 Criteria for a Good Model; 1.7.3 Personal Preferences; 1.8 General Notation; 2 Selection of Variables; 2.1 Introduction; 2.2 Background; 2.3 Preliminaries for a Multivariable Analysis; 2.4 Aims of Multivariable Models2.5 Prediction: Summary Statistics and Comparisons2.6 Procedures for Selecting Variables; 2.6.1 Strength of Predictors; 2.6.2 Stepwise Procedures; 2.6.3 All-Subsets Model Selection Using Information Criteria; 2.6.4 Further Considerations; 2.7 Comparison of Selection Strategies in Examples; 2.7.1 Myeloma Study; 2.7.2 Educational Body-Fat Data; 2.7.3 Glioma Study; 2.8 Selection and Shrinkage; 2.8.1 Selection Bias; 2.8.2 Simulation Study; 2.8.3 Shrinkage to Correct for Selection Bias; 2.8.4 Post-estimation Shrinkage; 2.8.5 Reducing Selection Bias; 2.8.6 Example; 2.9 Discussion2.9.1 Model Building in Small Datasets2.9.2 Full, Pre-specified or Selected Model?; 2.9.3 Comparison of Selection Procedures; 2.9.4 Complexity, Stability and Interpretability; 2.9.5 Conclusions and Outlook; 3 Handling Categorical and Continuous Predictors; 3.1 Introduction; 3.2 Types of Predictor; 3.2.1 Binary; 3.2.2 Nominal; 3.2.3 Ordinal, Counting, Continuous; 3.2.4 Derived; 3.3 Handling Ordinal Predictors; 3.3.1 Coding Schemes; 3.3.2 Effect of Coding Schemes on Variable Selection; 3.4 Handling Counting and Continuous Predictors: Categorization3.4.1 'Optimal' Cutpoints: A Dangerous Analysis3.4.2 Other Ways of Choosing a Cutpoint; 3.5 Example: Issues in Model Building with Categorized Variables; 3.5.1 One Ordinal Variable; 3.5.2 Several Ordinal Variables; 3.6 Handling Counting and Continuous Predictors: Functional Form; 3.6.1 Beyond Linearity; 3.6.2 Does Nonlinearity Matter?; 3.6.3 Simple versus Complex Functions; 3.6.4 Interpretability and Transportability; 3.7 Empirical Curve Fitting; 3.7.1 General Approaches to Smoothing; 3.7.2 Critique of Local and Global Influence Models; 3.8 Discussion; 3.8.1 Sparse Categories3.8.2 Choice of Coding SchemeMultivariable regression models are of fundamental importance in all areas of science in which empirical data must be analyzed. This book proposes a systematic approach to building such models based on standard principles of statistical modeling. The main emphasis is on the fractional polynomial method for modeling the influence of continuous variables in a multivariable context, a topic for which there is no standard approach. Existing options range from very simple step functions to highly complex adaptive methods such as multivariate splines with many knots and penalisation. This new approaWiley series in probability and statistics.Regression analysisPolynomialsVariables (Mathematics)Regression analysis.Polynomials.Variables (Mathematics)519.5/36Royston Patrick1341128Sauerbrei Willi1839202MiAaPQMiAaPQMiAaPQBOOK9911020049903321Multivariable model-building4418364UNINA02174nam2 22004693i 450 IEI009440420251003044158.0887011631X19951002d1995 ||||0itac50 baitaitz01i xxxe z01nz01ncRDAcarrierˆ6: La ‰parte delle donneTorinoRosenberg & Sellier1995241 p.28 cm.BNI/2003TO0V034186001IEI00571642001 Rapporto su Lo sviluppo umanoUNDP6Human development report 1995.MIL039109956028Pari opportunitàFIRCFIC169500E303.44CRESCITA E SVILUPPO SOCIALE19303.44CRESCITA E SVILUPPO SOCIALE20305.42DONNE. RUOLO SOCIALE E CONDIZIONE23United nations development programmeTO0V034186PNUDLIGV002339United nations development programmeProgramme des Nations unies pour le développementMILV138068United nations development programmeUNDPTO0V034187United nations development programmeProgramma delle Nazioni Unite per lo sviluppoUFIV075805United nations development programmePNUSUFIV075806United nations development programmePNUDLIGV002339United nations development programmeProgramme des Nations unies pour le développementMILV138068United nations development programmeUNDPTO0V034187United nations development programmeProgramma delle Nazioni Unite per lo sviluppoUFIV075805United nations development programmePNUSUFIV075806United nations development programmeITIT-00000019951002IT-BN0095 IT-NA0075 IEI0094404Biblioteca Centralizzata di Ateneov. 1;6 01POZZO LIB.ECON MON 5590 0101 0000131485E VMA (0006 v. 6B 2021033120210331 01 GEHuman Development Report 199556028UNISANNIO