{ "_id": "6a2723c824555f66ed5296f8", "Package": "choicer", "Title": "Discrete Choice Models for Economic Applications", "Version": "0.1.0.9000", "Authors@R": "person(\"Fernando\", \"Cordeiro\", , \"fernandolpcordeiro@gmail.com\", role = c(\"aut\", \"cre\", \"cph\"))", "Description": "Fast estimation of discrete-choice models for applied\neconomics. Likelihoods, analytical gradients and Hessians are\nimplemented in C++ with 'OpenMP' parallelism, scaling\nefficiently to specifications with many alternative-specific\nconstants. Post-estimation routines return predicted shares,\nown- and cross-price elasticities, and diversion ratios.\nSupports multinomial logit ('MNL'), mixed logit ('MXL'), and\nnested logit ('NL').", "License": "LGPL (>= 3)", "URL": "https://github.com/fpcordeiro/choicer", "BugReports": "https://github.com/fpcordeiro/choicer/issues", "Encoding": "UTF-8", "Roxygen": "list(markdown = TRUE)", "Config/testthat/edition": "3", "Config/roxygen2/version": "8.0.0", "Config/pak/sysreqs": "cmake", "Repository": "https://fpcordeiro.r-universe.dev", "Date/Publication": "2026-06-08 19:01:16 UTC", "RemoteUrl": "https://github.com/fpcordeiro/choicer", "RemoteRef": "HEAD", "RemoteSha": "c077424e89154e3ce6275df76ee77f7871b33031", "NeedsCompilation": "yes", "Packaged": { "Date": "2026-06-08 20:11:26 UTC", "User": "root" }, "Author": "Fernando Cordeiro [aut, cre, cph]", "Maintainer": "Fernando Cordeiro ", "MD5sum": "6e02e061e3543b0f7be2aa4750ef47e5", "_user": "fpcordeiro", "_type": "src", "_file": "choicer_0.1.0.9000.tar.gz", "_fileid": "3fdbeb94f22bd32f3de207eb41d9a53825852409301bde44497e820e34fa6939", "_filesize": 490378, "_sha256": "3fdbeb94f22bd32f3de207eb41d9a53825852409301bde44497e820e34fa6939", "_created": "2026-06-08T20:11:26.000Z", "_published": "2026-06-08T20:19:20.528Z", "_distro": "noble", "_jobs": [ { "job": 80186663015, "time": 170, "config": "linux-devel-arm64", "r": "4.7.0", "check": "OK", "artifact": "7491321580" }, { "job": 80186663084, "time": 165, "config": "linux-devel-x86_64", "r": "4.7.0", "check": "OK", "artifact": "7491319415" }, { "job": 80186663009, "time": 157, "config": "linux-release-arm64", "r": "4.6.0", "check": "OK", "artifact": "7491317221" }, { "job": 80186663164, "time": 171, "config": "linux-release-x86_64", "r": "4.6.0", "check": "OK", "artifact": "7491321115" }, { "job": 80186663020, "time": 132, "config": "macos-oldrel-arm64", "r": "4.5.3", "check": "OK", "artifact": "7491306989" }, { "job": 80186662979, "time": 280, "config": "macos-oldrel-x86_64", "r": "4.5.3", "check": "OK", "artifact": "7491361148" }, { "job": 80186663005, "time": 125, "config": "macos-release-arm64", "r": "4.6.0", "check": "OK", "artifact": "7491304950" }, { "job": 80186662994, "time": 402, "config": "macos-release-x86_64", "r": "4.6.0", "check": "OK", "artifact": "7491405411" }, { "job": 80186099899, "time": 183, "config": "source", "r": "4.6.0", "check": "OK", "artifact": "7491259261" }, { "job": 80186663088, "time": 140, "config": "wasm-release", "r": "4.6.0", "check": "OK", "artifact": "7491310301" }, { "job": 80186663011, "time": 195, "config": "windows-devel", "r": "4.7.0", "check": "OK", "artifact": "7491329598" }, { "job": 80186662974, "time": 224, "config": "windows-oldrel", "r": "4.5.3", "check": "OK", "artifact": "7491340138" }, { "job": 80186663017, "time": 153, "config": "windows-release", "r": "4.6.0", "check": "OK", "artifact": "7491315316" } ], "_buildurl": "https://github.com/r-universe/fpcordeiro/actions/runs/27163906842", "_status": "success", "_host": "GitHub-Actions", "_upstream": "https://github.com/fpcordeiro/choicer", "_commit": { "id": "c077424e89154e3ce6275df76ee77f7871b33031", "author": "Claude ", "committer": "Fernando Cordeiro ", "message": "fix(blp): correct MNL BLP contraction NaN with outside option\n\nThe MNL blp_contraction kernel built a length-(J+1) delta vector (index 0 =\noutside option, 1..J = inside ASCs) but passed the FULL vector to\nmnl_predict_shares_internal, which indexes delta by inside-alt index {0..J-1}.\nIt therefore read [outside, inside_1, ..., inside_{J-1}] as the inside ASCs,\nusing the outside slot as the first inside ASC and dropping the last. The\noutside delta was also never pinned at 0, so shares were corrupted each\niteration and the contraction diverged to NaN whenever\ninclude_outside_option = TRUE.\n\nMirror the fix already applied to nl_blp_contraction:\n- feed the internal the length-J inside slice (delta.subvec(1, num_alts-1));\n- pin delta[0] = 0 at init and every iteration;\n- guard against non-positive target_shares (log undefined).\n\nThe MXL mxl_blp_contraction kernel was already correct (it operates on a\nlength-J_inside inside-delta and works with inside shares), verified by a new\noutside-option round-trip test.\n\nTests:\n- strengthen the MNL outside-option test to assert finite output and a\n round-trip back to the fitted inside ASCs (previously only checked shape and\n documented the NaN divergence);\n- add a target_shares positivity guard test;\n- add an MXL outside-option round-trip test.\n", "time": 1780945276 }, "_maintainer": { "name": "Fernando Cordeiro", "email": "fernandolpcordeiro@gmail.com", 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