get_weights {MOFA2} | R Documentation

## Get weights

### Description

Extract the weights from the model.

### Usage

    get_weights(
      object,
      views = "all",
      factors = "all",
      abs = FALSE,
      scale = FALSE,
      as.data.frame = FALSE
    )

### Arguments

`object` | a trained `MOFA` object.
`views` | character vector with the view name(s), or numeric vector with the view index(es). Default is "all".
`factors` | character vector with the factor name(s) or numeric vector with the factor index(es). Default is "all".
`abs` | logical indicating whether to take the absolute value of the weights.
`scale` | logical indicating whether to scale all weights from -1 to 1 (or from 0 to 1 if `abs=TRUE`).
`as.data.frame` | logical indicating whether to return a long data frame instead of a list of matrices. Default is `FALSE`.

### Value

By default it returns a list where each element is a loading matrix with dimensionality (D,K), where D is the number of features and K is the number of factors.
Alternatively, if `as.data.frame` is `TRUE`, returns a long-formatted data frame with columns (view,feature,factor,value).

### Examples

    # Using an existing trained model on simulated data
    file <- system.file("extdata", "model.hdf5", package = "MOFA2")
    model <- load_model(file)

    # Fetch weights in matrix format (a list, one matrix per view)
    weights <- get_weights(model)

    # Fetch weights for factor 1 and 2 and view 1
    weights <- get_weights(model, views = 1, factors = c(1,2))

    # Fetch weights in data.frame format
    weights <- get_weights(model, as.data.frame = TRUE)

[Package MOFA2 version 1.2.2 Index]