CITAN (version 2015.12-2)

lbsAssess: Calculate impact of given authors

Description

Given a list of authors' citation sequences, the function calculates values of many impact functions at a time.

Usage

lbsAssess(citseq, f = list(length, index_h), captions = c("length",
  "index_h"), orderByColumn = 2, bestRanks = 20, verbose = T)

Arguments

citseq

list of numeric vectors, e.g. the output of lbsGetCitations.

f

a list of \(n\) functions which compute the impact of an author. The functions must calculate their values using numeric vectors passed as their first arguments.

captions

a list of \(n\) descriptive captions for the functions in f.

orderByColumn

column to sort the results on. 1 for author names, 2 for the first function in f, 3 for the second, and so on.

bestRanks

if not NULL, only a given number of authors with the greatest impact (for each function in f) will be included in the output.

verbose

logical; TRUE to inform about the progress of the process.

Value

A data frame in which each row corresponds to the assessment results of some citation sequence. The first column stands for the authors' names (taken from names(citseq), the second for the valuation of f[[1]], the third for f[[2]], and so on. See Examples below.

See Also

lbsConnect, lbsGetCitations

Examples

# NOT RUN {
conn <- lbsConnect("Bibliometrics.db");
## ...
citseq <- lbsGetCitations(conn,
	surveyDescription="Scientometrics", documentTypes="Article",
	idAuthors=c(39264,39265,39266));
print(citseq);
## $`Liu X.`                                # Author name
## 40116 34128 39122 29672 32343 32775      # IdDocument
##    11     4     1     0     0     0      # Citation count
## attr(,"IdAuthor")
## [1] 39264                                # IdAuthor
##
## $`Xu Y.`
## 38680 38605 40035 40030 40124 39829 39745 29672
##    30    14     8     6     6     5     3     0
## attr(,"IdAuthor")
## [1] 39265
##
## $`Wang Y.`
## 29992 29672 29777 32906 33858 33864 34704
##     1     0     0     0     0     0     0
## attr(,"IdAuthor")
## [1] 39266
library("agop")
print(lbsAssess(citseq,
   f=list(length, sum, index.h, index.g, function(x) index.rp(x,1),
       function(x) sqrt(prod(index.lp(x,1))),
       function(x) sqrt(prod(index.lp(x,Inf)))),
   captions=c("length", "sum", "index.h", "index.g", "index.w",
   "index.lp1", "index.lpInf")));
##      Name length sum index.h index.g index.w index.lp1 index.lpInf
## 3   Xu Y.      8  72       5       8       7  8.573214    5.477226
## 2 Wang Y.      7   1       1       1       1  1.000000    1.000000
## 1  Liu X.      6  16       2       4       3  4.157609    3.316625
## ...
dbDisconnect(conn);
# }