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  "Date": "2023-02-12",
  "Authors@R": "c(\nperson(given = \"Jin\", family = \"Zhu\", email = \"zhuj37@mail2.sysu.edu.cn\", role = c(\"aut\", \"cre\"), comment = c(ORCID = \"0000-0001-8550-5822\")),\nperson(given = \"Wenliang\", family = \"Pan\", role = c(\"aut\")),\nperson(given = \"Yuan\", family = \"Tian\", role = c(\"aut\")),\nperson(given = \"Weinan\", family = \"Xiao\", role = c(\"aut\")),\nperson(given = \"Chengfeng\", family = \"Liu\", role = c(\"aut\")),\nperson(given = \"Ruihuang\", family = \"Liu\", role = c(\"aut\")),\nperson(given = \"Yue\", family = \"Hu\", role = c(\"aut\")),\nperson(given = \"Hongtu\", family = \"Zhu\", role = c(\"aut\")),\nperson(given = \"Heping\", family = \"Zhang\", role = c(\"aut\")),\nperson(given = \"Xueqin\", family = \"Wang\", email = \"wangxq20@ustc.edu.cn\", role = c(\"aut\"), comment = c(ORCID = \"0000-0001-5205-9950\"))\n)",
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  "Description": "Hypothesis tests and sure independence screening (SIS)\nprocedure based on ball statistics, including ball divergence\n<doi:10.1214/17-AOS1579>, ball covariance\n<doi:10.1080/01621459.2018.1543600>, and ball correlation\n<doi:10.1080/01621459.2018.1462709>, are developed to analyze\ncomplex data in metric spaces, e.g, shape, directional,\ncompositional and symmetric positive definite matrix data. The\nball divergence and ball covariance based distribution-free\ntests are implemented to detecting distribution difference and\nassociation in metric spaces <doi:10.18637/jss.v097.i06>.\nFurthermore, several generic non-parametric feature selection\nprocedures based on ball correlation, BCor-SIS and all of its\nvariants, are implemented to tackle the challenge in the\ncontext of ultra high dimensional data. A fast implementation\nfor large-scale multiple K-sample testing with ball divergence\n<doi: 10.1002/gepi.22423> is supported, which is particularly\nhelpful for genome-wide association study.",
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  "Author": "Jin Zhu [aut, cre] (<https://orcid.org/0000-0001-8550-5822>),\nWenliang Pan [aut], Yuan Tian [aut], Weinan Xiao [aut],\nChengfeng Liu [aut], Ruihuang Liu [aut], Yue Hu [aut], Hongtu\nZhu [aut], Heping Zhang [aut], Xueqin Wang [aut]\n(<https://orcid.org/0000-0001-5205-9950>)",
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