# hbayes

## Purpose

Evaluate Hessian of Bayesian error function for network.

## Synopsis

    h = hbayes(net, hdata)
    [h, hdata] = hbayes(net, hdata)

## Description

`h = hbayes(net, hdata)` takes a network data structure `net` together the data contribution to the Hessian for a set of inputs and targets. It returns the regularised Hessian using any zero mean Gaussian priors on the weights defined in `net`. In addition, if a `mask` is defined in `net`, then the entries in `h` that correspond to weights with a 0 in the mask are removed.

`[h, hdata] = hbayes(net, hdata)` additionally returns the data component of the Hessian.

## See Also

`gbayes`, `glmhess`, `mlphess`, `rbfhess`

Pages: Index

Copyright (c) Ian T Nabney (1996-9)