These functions take a Net object, manipulate the network in some way, and return a list of modified Net objects.
node_jacknife. Removes each node in turn from the Net, and returns a list of jackknifed Net objects.
network_jackknife - Removes each subnetwork in turn from the Net, and returns a list of jackknifed Net objects
absolute_threshold - Applies a series of absolute thresholding to target network, returning a binary network.
relative_threshold - Applies a relative threshold based on target density to target network