lotka {bibliometrix} | R Documentation |

## Lotka's law coefficient estimation

### Description

It estimates Lotka's law coefficients for scientific productivity (Lotka A.J., 1926).

### Usage

```
lotka(results)
```

### Arguments

`results` |
is an object of the class ' |

### Details

Reference:
Lotka, A. J. (1926). The frequency distribution of scientific productivity. Journal of the Washington academy of sciences, 16(12), 317-323.

### Value

The function `lotka`

returns a list of summary statistics of the Lotka's law estimation of an object of class `bibliometrix`

.

the list contains the following objects:

`Beta` | Beta coefficient | |

`C` | Constant coefficient | |

`R2` | Goodness of Fit | |

`fitted` | Fitted Values | |

`p.value` | Pvalue of two-sample Kolmogorov-Smirnov test between the empirical and the theoretical Lotka's Law distribution (with Beta=2) | |

`AuthorProd` | Authors' Productivity frequency table |

### See Also

`biblioAnalysis`

function for bibliometric analysis

`summary`

method for class '`bibliometrix`

'

### Examples

```
data(scientometrics, package = "bibliometrixData")
results <- biblioAnalysis(scientometrics)
L=lotka(results)
L
```

[Package

*bibliometrix*version 4.3.0 Index]