nimare.meta.ibma
.WeightedLeastSquares¶
-
class
WeightedLeastSquares
(tau2=0, *args, **kwargs)[source]¶ Bases:
nimare.base.MetaEstimator
Weighted least-squares meta-regression.
Provides the weighted least-squares estimate of the fixed effects given known/assumed between-study variance tau^2. When tau^2 = 0 (default), the model is the standard inverse-weighted fixed-effects meta-regression.
- Parameters
tau2 (
float
or 1Dnumpy.ndarray
, optional) – Assumed/known value of tau^2. Must be >= 0. Default is 0.
Notes
Requires
beta
andvarcope
images.Warning
All image-based meta-analysis estimators adopt an aggressive masking strategy, in which any voxels with a value of zero in any of the input maps will be removed from the analysis.
References
Brockwell, S. E., & Gordon, I. R. (2001). A comparison of statistical methods for meta-analysis. Statistics in Medicine, 20(6), 825–840. https://doi.org/10.1002/sim.650
See also
pymare.estimators.WeightedLeastSquares
The PyMARE estimator called by this class.
-
fit
(dataset)[source]¶ Fit Estimator to Dataset.
- Parameters
dataset (
nimare.dataset.Dataset
) – Dataset object to analyze.- Returns
nimare.results.MetaResult
– Results of Estimator fitting.
Notes
The
fit
method is a light wrapper that runs input validation and preprocessing before fitting the actual model. Estimators’ individual “fitting” methods are implemented as_fit
, although users should callfit
.