easystats / easystats/parameters
Mislabelled output for `BayesFactor::regressionBF()` models?
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Description
With regressionBF, if I inspect a model directly I get
require(discovr)
require(BayesFactor)
album_tib <- discovr::album_sales
album_bf <- BayesFactor::regressionBF(sales ~ adverts + airplay + image, rscaleCont = "medium", data = album_tib)
album_bf
|==================================================================================================| 100%
Bayes factor analysis
--------------
[1] adverts : 1.320123e+16 ±0%
[2] airplay : 4.723817e+17 ±0.01%
[3] image : 6039.289 ±0%
[4] adverts + airplay : 5.65038e+39 ±0%
[5] adverts + image : 2.65494e+20 ±0%
[6] airplay + image : 1.034464e+20 ±0%
[7] adverts + airplay + image : 7.746101e+42 ±0%
Against denominator:
Intercept only
---
Bayes factor type: BFlinearModel, JZS
but with model_parameters(album_bf) I get:
model_parameters(album_bf)
Multiple `BFBayesFactor` models detected - posteriors are extracted from the first numerator
model.
See help("get_parameters", package = "insight").
# Extra Parameters
Parameter | Median | 95% CI | pd | BF
----------------------------------------------------------
mu | 193.03 | [ 183.63, 202.51] | 100% | 1.32e+16
adverts | 0.09 | [ 0.08, 0.11] | 100% | 4.72e+17
sig2 | 4389.28 | [3629.69, 5366.11] | 100% | 6.04e+03
g | 0.42 | [ 0.08, 12.32] | 100% | 5.65e+39
# Fixed Effects
Parameter | BF
--------------------
adverts | 2.65e+20
airplay | 1.03e+20
image | 7.75e+42
The values in column BF map onto the output of album_bf but the labels in Parameter do not. Am I misunderstanding the labels, or is model_parameters() mis-labelling? [For the record I'm using model_parameters() to get nice output and because I want students to learn a consistent workflow with all models.]
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Research direction
Start by running the reproducible R example with discovr, BayesFactor, and model_parameters(album_bf). Read the model_parameters() and get_parameters() entry points mentioned in the report, then compare the returned parameter labels with the original regressionBF output. Done means the BF values and parameter names are aligned for this model.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- r
- Domain
- data
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 52/100