@flinder flinder released this Jun 14, 2018 · 12 commits to master since this release

Assets 2

Bug Fixes

  • netinf_ used ceiling on integer which caused error on Solaris

@flinder flinder released this Jun 5, 2018 · 18 commits to master since this release

Assets 2

New Features

Changes to netinf()

  • 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
  • Number of edges can now be chosen using a Vuong style test. If this
    procedure should be used, a p-value is chosen at which the inference of new
    edges stops. This value is specified via the new p_value_cutoff argument
    to netinf().
  • This lead to the netinf output having a fourth column now, containing the
    p-value for each edge. The p-value is also available if a fixed number of edges
    is chosen.
  • If no starting values are provided via the params argument 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_edges can now specify either an absolute number of edges, or a p-value
    cutoff in the interval (0, 1) for the Vuong test
  • The log normal distribution is now available as a diffusion model. With this
    comes a change in the arguments for netinf. Instead of lambda,
    parameters are now specified with a vector (or scalar depending on
    distribution) params. For exponential and rayleigh distributions params
    is just the rate / alpha parameter. For the log-normal distribution params
    specifies mean and variance (in that order). See the netinf()
    documentation for details on specificaiton and parametrization (?netinf).
  • The output from netinf() now contains information on the model, parameters
    and iterations as attributes. See the documentation for details.
  • The policies dataset has been updated with over 600 new policies from the
    SPID database
    (access via data(policies)).
  • Inferred cascade trees can now be returned by setting trees = TRUE.

New functions

  • New function drop_nodes() now allows to drop nodes from all cascades in a cascade object.

Changes to simulate_cascades()

  • simulate_cascades() now supports passing of additional (isolated in the diffusion network) nodes via the nodes argument.
  • simulate_cascades() now also supports the log-normal distribution.

Bug Fixes

  • Inference of very uninformative edges (large number of edges) could lead for the software to break. Fixed now
  • In 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.

Other changes

  • C++ code is now modularized and headers are properly documented

@flinder flinder released this Dec 1, 2017 · 142 commits to master since this release

Assets 2

New Features

  • We made changes to the internal data structures of the netinf function, so it is much faster and memory efficient now.
  • netinf() now has a shiny progress bar!
  • as.cascade is now completely removed (see release note on version 1.1.0).
  • New convenience function to subset cascades by time (subset_cascade_time) and by cascade id (subset_cascade).

Bug Fixes

  • Long running functions (that call compiled code) can now be interrupted without crashing the R session.
  • as_cascade_long() and as_cascade_wide() handle date input correctly now.
  • as_cascade_wide() couldn't handle data input of class data.table.

@flinder flinder released this Jul 18, 2017 · 178 commits to master since this release

Assets 2

Bug Fixes

  • Use of igraph now conditional compliant with Writing R Extensions 1.1.3.1
  • Fixed version number displayed in startup message

@flinder flinder released this Jun 6, 2017 · 186 commits to master since this release

Assets 2

New Features

  • Data format (long or wide) of as.cascade is 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.cascade is now deprecated and replaced by two new functions as_cascade_long and as_cascade_wide.

Bug Fixes

  • x and y axis labels in plot.cascade with option label_nodes=FALSE were
    reversed

@flinder flinder released this Mar 26, 2017 · 206 commits to master since this release

Assets 2
v1.0.0

update description date