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Bias reduction in generalized linear models using enrichwith10 months ago
Introduction | Endometrial cancer data | Quasi Fisher scoring for bias reduction | Implementation using enrichwith | Notes | References
Enriching family objects: exponential family of distributions10 months ago
Introduction | Exponential family and family objects | Normal with mean $\mu$ and variance $\phi/m$ | Binomial with index $m$ and probability $\mu$ | Poisson with mean $\mu$ | Gamma with mean $\mu$ and shape $1/\phi$ | Inverse Gaussian with mean $\mu$ and variance $\phi\mu^3$ | Components in family objects | Enrichment options for family objects
Enriching glm objects10 months ago
Introduction | Clotting data set | Key quantities in likelihood inference | Score function | Information matrix | Score tests | Simulating from glm objects at parameter values | pmodel, dmodel, qmodel | enriched_glm | Links to other resources | References
Bias reduction in generalized linear models10 months ago
The brglm2 package | This vignette | Other resources | Generalized linear models | Model | Score functions and information matrix | The expected information matrix about $\beta$ and $\phi$ is$$i =\left[\begin{array}{cc}i_{\beta\beta} & 0_p \0_p^\top & i_{\phi\phi}\end{array}\right] | Maximum likelihood estimation | Mean bias-reducing adjusted score functions | Median bias-reducing adjusted score functions | Mixed adjustments | Maximum penalized likelihood with powers of Jeffreys prior as penalty | Fitting algorithm in brglmFit | Input | Output | Iteration | Notes | Contributions to this vignette | Citation | References
Adjacent category logit models using brglm22 years ago
bracl | Citation | Opinion on stem cell research and religious fundamentalism | Maximum likelihood estimation | Mean and median bias reduction | Prediction | Relevant resources | References
Multinomial logistic regression using brglm22 years ago
brmultinom | Alligator data | Maximum likelihood estimation | Mean and median bias reduction | Infinite estimates and multinomial logistic regression | Relevant resources | Citation | References
Negative binomial regression using brglm22 years ago
brnb | Ames salmonella data | Maximum likelihood estimation | Bias reduction | Asymptotic mean-bias correction | Mean-bias reducing adjusted score equations | Median-bias reducing adjusted score equations | Mixed bias reducing adjusted score equations | Relevant resources | Citation | References
Estimating the exponential of regression parameters using brglm23 years ago
The expo() method | AIDS and AZT use | Infinite odds ratio estimates | brglmFit objects | References
Detecting separation and infinite estimates in log binomial regression4 years ago
Introduction | Example | Detect separation | Detect infinite estimates | Fitting the LBRM | Details on the output | Choosing starting values | Simple approach | Hot start via Poisson model | Recommendation | References
Detect/check for separation and infinite maximum likelihood estimates in logistic regression4 years ago
The detectseparation package | Checking for infinite estimates | Detecting separation | Citation | References
CRAN top 20s and interactive package and collaboration networks4 years ago
cranly | Preparing today's CRAN package database | Network of package directives | CRAN collaboration network
Extracting information from cranly package networks: extractors and word clouds4 years ago
cranly extractor functions | CRAN package directives and author collaboration networks | Example queries | Packages by Kurt Hornik | Packages by people named "Ioannis" | Packages with "glm" in their name | Authors of the lubridate package | Authors with "Ioan" in their name | Packages suggested by, imported by and enhanced by the sf package | Packages that are suggesting, importing, enhancing the sf package | Packages that depend on the sf package | Packages that are dependencies of the sf package | Packages maintained by everyone with "Helen" in their name | All available info, on packages maintained by everyone with "Helen" in their name | The maintainer of data.table | The email of the maintainer of trackeRapp | All emails of maintainers using an email address from University of Warwick | The title, the description, the version and the license of the semnar package | Distribution of the release dates of all packages in CRAN | Word clouds
R package dependence trees4 years ago
cranly dependence trees | Constructing cranly_dependence_tree objects | Package dependence index