# ------------------------------------------------ # CITATION.cff file created with {cffr} R package # See also: https://docs.ropensci.org/cffr/ # ------------------------------------------------ cff-version: 1.2.0 message: 'To cite package "xtife" in publications use:' type: software license: - GPL-2.0-only - GPL-3.0-only title: 'xtife: Interactive Fixed Effects Estimator for Panel Data' version: 0.1.4 identifiers: - type: doi value: 10.32614/CRAN.package.xtife abstract: Implements the interactive fixed effects ('IFE') panel estimator of Bai (2009) for balanced and unbalanced panels, with optional additive unit and/or time fixed effects. Provides analytical standard errors ('homoskedastic', 'HC1' heteroskedasticity-robust, cluster-robust by unit, and heteroskedasticity- and autocorrelation- consistent), together with asymptotic incidental-parameter bias correction for large panels, including a dynamic extension for predetermined (lagged-dependent) regressors following Moon and Weidner (2017) . The number of factors is chosen by information criteria (Bai and Ng 2002 ) or by singular value thresholding. Unbalanced panels are handled by an expectation-maximisation algorithm with nuclear-norm-regularised initialisation, with estimation, analytical inference, and bias correction following Su, Wang and Wang (2025) and building on the matrix-completion and missing-data factor analysis of Bai and Ng (2021) . All computations use base R only, with no external dependencies. authors: - family-names: Chen given-names: Binzhi email: Binzhi.Chen9@gmail.com preferred-citation: type: manual title: 'xtife: Interactive Fixed Effects Estimator for Panel Data' authors: - family-names: Chen given-names: Binzhi email: Binzhi.Chen9@gmail.com year: '2026' notes: R package version 0.1.4 url: https://CRAN.R-project.org/package=xtife repository: https://cran.r-universe.dev repository-code: https://github.com/Rickchen0910/xtife commit: e20022ec897a825e6da802fdf0c1e5c8a5681426 url: https://github.com/Rickchen0910/xtife date-released: '2026-07-22' contact: - family-names: Chen given-names: Binzhi email: Binzhi.Chen9@gmail.com