This is an R implementation of the netinf algorithm (Gomez Rodriguez, Leskovec, and Krause, 2010)
log-normalmodel didn't run because of an index error in the argument check for
netinf_used ceiling on integer which caused error on Solaris
netinf()got another speed-up. After the first edge, the computation time for each edge is reduced by the factor number of nodes in the network
paramsargument parameters are initialized by choosing the midpoint between the maximum possible parameter value and the minimum possible value. These values are derived using the closed form MLE of the respective parameter, derived from either the minimum possible diffusion times (assuming a diffusion 'chain', i.e.
a -> b -> c -> ...) or the maximum possible diffusion times (assuming a diffusion 'fan', i.e.
a -> b, a -> c, a -> d,...).
n_edgescan now specify either an absolute number of edges, or a p-value cutoff in the interval
(0, 1)for the Vuong test
netinf. Instead of
lambda, parameters are now specified with a vector (or scalar depending on distribution)
params. For exponential and rayleigh distributions
paramsis just the rate / alpha parameter. For the log-normal distribution
paramsspecifies mean and variance (in that order). See the
netinf()documentation for details on specificaiton and parametrization (
netinf()now contains information on the model, parameters and iterations as attributes. See the documentation for details.
policiesdataset has been updated with over 600 new policies from the SPID database (access via
trees = TRUE.
drop_nodes()now allows to drop nodes from all cascades in a cascade object.
simulate_cascades()now supports passing of additional (isolated in the diffusion network) nodes via the
simulate_cascades()now also supports the log-normal distribution.
simulate_cascades()with partial cascades provided, it was possible that nodes experienced an event earlier than the last event in the partial cascade. Now, the earliest event time is the last observed event time in the partial cascade.
netinf()now has a shiny progress bar!
as.cascadeis now completely removed (see release note on version 1.1.0).
subset_cascade_time) and by cascade id (
as_cascade_wide()handle date input correctly now.
as_cascade_wide()couldn't handle data input of class
as.cascadeis not bound to the class of the data object anymore. In 1.0.0 wide format had to be a matrix and long format had to be a dataframe. This did not make much sense.
as.cascadeis now deprecated and replaced by two new functions