randomWalkByMatrixInv,matrix-method {netSmooth} | R Documentation

## Smooth data on graph by computing the closed-form steady state distribution of the random walk with restarts process.

### Description

The closed-form solution is given by f_ss = (1 - alpha) * (I - alpha * A)^-1 * f_0 and is computed by matrix inversion in this function.

### Usage

    ## S4 method for signature 'matrix'
    randomWalkByMatrixInv(
      f0,
      adjMatrix,
      alpha,
      normalizeAdjMatrix = c("rows", "columns")
    )

### Arguments

`f0` | initial data matrix [NxM]
`adjMatrix` | adjacency matrix of graph to network smooth on will be column-normalized.
`alpha` | smoothing coefficient (1 - restart probability of random walk)

### Value

network-smoothed gene expression

[Package netSmooth version 1.8.0 Index]