'scholar::get_impactfactor' 给出了不正确的影响因子值和期刊名称

如何解决'scholar::get_impactfactor' 给出了不正确的影响因子值和期刊名称

我刚开始尝试使用 scholar::get_impactfactor() 获取影响因子值，但它不断给出不正确的影响因子和不正确的期刊名称。感觉三个期刊名（“JAMA”、“Kidney Int”、“American Society of Nephrology”）都挺“标准”的，不知道漏了什么。

scholar::get_impactfactor(c("JAMA","Kidney Int","American Society of Nephrology"),max.distance = .1)
#> # A tibble: 3 x 4
#>   Journal                            Cites ImpactFactor Eigenfactor
#>   <chr>                              <dbl>        <dbl>       <dbl>
#> 1 CA-A CANCER JOURNAL FOR CLINICIANS 28839         245.      0.0660
#> 2 CA-A CANCER JOURNAL FOR CLINICIANS 28839         245.      0.0660
#> 3 CA-A CANCER JOURNAL FOR CLINICIANS 28839         245.      0.0660
scholar::get_impactfactor(c("JAMA",max.distance = .5)
#> # A tibble: 3 x 4
#>   Journal                  Cites ImpactFactor Eigenfactor
#>   <chr>                    <dbl>        <dbl>       <dbl>
#> 1 LANCET                  233269         53.3      0.436 
#> 2 NATURE REVIEWS geneticS  35680         41.5      0.0943
#> 3 NATURE                  710766         41.6      1.36
scholar::get_impactfactor(c("JAMA",max.distance = .8)
#> # A tibble: 3 x 4
#>   Journal                                         Cites ImpactFactor Eigenfactor
#>   <chr>                                           <dbl>        <dbl>       <dbl>
#> 1 JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIAT~ 148774        47.7      0.300  
#> 2 JOURNAL OF THE AMERICAN SOCIETY OF NEPHROLOGY   37796         8.65     0.0568 
#> 3 Annual Review of Nutrition                       5528         8.89     0.00523

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