Description Usage Arguments Details Value Author(s) References Examples
Elo-ratings for pairwise comparisons of visual stimuli
1 2 3 | elochoice(winner, loser, kval = 100, startvalue = 0, runs = 1, normprob = FALSE)
eloint(winner, loser, allids, kval, startvalues, runs)
elointnorm(winner, loser, allids, kval, startvalues, runs)
|
winner |
character, vector with the IDs of the winning (preferred) and losing (not preferred) stimuli |
loser |
character, vector with the IDs of the winning (preferred) and losing (not preferred) stimuli |
kval |
numeric, k-value, which determines the maximum number of points a stimulus' rating can change after a single rating event, by default 100 |
startvalue |
numeric, start value around which ratings are centered, by default 0 |
runs |
numeric, number of randomizations |
normprob |
logical, by default |
startvalues |
numeric, start value around which ratings are centered, by default 0 |
allids |
internal, character of all stimulus IDs in the data set |
elochoice()
is the workhorse function of the package, which wraps up all the calculations for obtaining Elo-ratings and the information for the reliability index
eloint()
and elointnorm()
are internal functions (which elochoice()
makes use of) that do most of the calculations, but are usually not directly addressed by the user.
an object of class elochoice
, i.e. a list with the following items
ratmat |
numeric matrix with final ratings for each stimulus, one row per randomization |
decmat |
logical matrix showing for each randomization (row) and each single rating event (column) whether or not there was an expectation for that trial, i.e. whether the two stimuli's ratings differed before the rating |
upsmat |
logical matrix showing for each randomization (row) and each single rating event (column) whether or not the outcome of a trial was in the direction of the expectation, i.e. whether or not the higher rated stimulus won |
wgtmat |
numeric matrix showing for each randomization (row) and each single rating event (column) the absolute difference in ratings before the rating event |
misc |
various information |
ov |
data set overview, i.e. in how many trials was a stimulus involved and how many trials did each stimulus win and lose |
ias |
character matrix, with the original sequence of rating events |
Christof Neumann
elo1978EloChoice
\insertRefclark2018EloChoice
1 2 3 4 5 |
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