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ergm (version 4.4.0)

Fit, Simulate and Diagnose Exponential-Family Models for Networks

Description

An integrated set of tools to analyze and simulate networks based on exponential-family random graph models (ERGMs). 'ergm' is a part of the Statnet suite of packages for network analysis. See Hunter, Handcock, Butts, Goodreau, and Morris (2008) and Krivitsky, Hunter, Morris, and Klumb (2023) .

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Install

install.packages('ergm')

Monthly Downloads

6,854

Version

4.4.0

License

GPL-3 + file LICENSE

Maintainer

Pavel N. Krivitsky

Last Published

January 27th, 2023

Functions in ergm (4.4.0)

CondDegree-ergmProposal

MHp for degree constraints

CondDegreeDist-ergmProposal

MHp for degreedist constraints

CondB2Degree-ergmProposal

MHp for b2degree constraints

Wrap binary terms for use in valued models

Bernoulli-ergmReference

Bernoulli reference

CondInDegreeDist-ergmProposal

MHp for idegreedist constraints

Impose a curved structure on term parameters

DiscUnif-ergmReference

Discrete Uniform reference

DiscUnifNonObserved-ergmProposal

CondB1Degree-ergmProposal

MHp for b1degree constraints

CondDegreeMix-ergmProposal

MHp for degree mix constraints

CondInDegree-ergmProposal

MHp for idegree constraints

BDStratTNT-ergmProposal

TNT proposal with degree bounds, stratification, and a blocks constraint

Offset-ergmTerm

Terms with fixed coefficients

Filtering on arbitrary one-term model

Modify terms' coefficient names

Dyads-ergmConstraint

Constrain fixed or varying dyad-independent terms

Exponentiate a network's statistic

A product (or an arbitrary power combination) of one or more formulas

Take a natural logarithm of a network's statistic

NodematchFilter-ergmTerm

Filtering on nodematch

DistRLE-ergmProposal

HammingTNT-ergmProposal

ConstantEdges-ergmProposal

MHp for edges constraints

DiscUnif-ergmProposal

CondOutDegreeDist-ergmProposal

MHp for odegreedist constraints

CondOutDegree-ergmProposal

MHp for odegree constraints

HammingConstantEdges-ergmProposal

DiscUnif2-ergmProposal

Symmetrize-ergmTerm

Evaluation on symmetrized (undirected) network

A for operator for terms

A sum (or an arbitrary linear combination) of one or more formulas

Unif-ergmProposal

Unif-ergmReference

Continuous Uniform reference

absdiff-ergmTerm

Absolute difference in nodal attribute

atleast-ergmTerm

Number of dyads with values greater than or equal to a threshold

altkstar-ergmTerm

Alternating \(k\)-star

approx.hotelling.diff.test

Approximate Hotelling T^2-Test for One or Two Population Means

StdNormal-ergmProposal

Evaluation on an induced subgraph

StdNormal-ergmReference

Standard Normal reference

atmost-ergmTerm

Number of dyads with values less than or equal to a threshold

attrcov-ergmTerm

Edge covariate by attribute pairing

absdiffcat-ergmTerm

Categorical absolute difference in nodal attribute

b1nodematch-ergmTerm

Nodal attribute-based homophily effect for the first mode in a bipartite network

asymmetric-ergmTerm

Asymmetric dyads

TNT-ergmProposal

Default MH algorithm

UnifNonObserved-ergmProposal

as.network.numeric

Create a Simple Random network of a Given Size

b1concurrent-ergmTerm

Concurrent node count for the first mode in a bipartite network

b1degree-ergmTerm

Degree for the first mode in a bipartite network

b1sociality-ergmTerm

Main effect of a covariate for the first mode in a bipartite network

ANOVA for ERGM Fits

b1mindegree-ergmTerm

Minimum degree for the first mode in a bipartite network

b1factor-ergmTerm

Factor attribute effect for the first mode in a bipartite network

Dyadwise shared partners for dyads in the first bipartition

b1degrees-ergmConstraint

Preserve the actor degree for bipartite networks

b1degrange-ergmTerm

Degree range for the first mode in a bipartite network

as.rlebdm.ergm_conlist

Extract dyad-level ERGM constraint information into an rlebdm object

Main effect of a covariate for the second mode in a bipartite network

b1star-ergmTerm

\(k\)-stars for the first mode in a bipartite network

b2degrees-ergmConstraint

Preserve the receiver degree for bipartite networks

b2degree-ergmTerm

Degree for the second mode in a bipartite network

Dyadwise shared partners for dyads in the second bipartition

b2degrange-ergmTerm

Degree range for the second mode in a bipartite network

b2factor-ergmTerm

Factor attribute effect for the second mode in a bipartite network

b2concurrent-ergmTerm

Concurrent node count for the second mode in a bipartite network

b1twostar-ergmTerm

Two-star census for central nodes centered on the first mode of a bipartite network

b1starmix-ergmTerm

Mixing matrix for \(k\)-stars centered on the first mode of a bipartite network

b2twostar-ergmTerm

Two-star census for central nodes centered on the second mode of a bipartite network

blocks-ergmConstraint

Constrain blocks of dyads defined by mixing type on a vertex attribute.

b2sociality-ergmTerm

b2starmix-ergmTerm

Mixing matrix for \(k\)-stars centered on the second mode of a bipartite network

b2star-ergmTerm

\(k\)-stars for the second mode in a bipartite network

b2nodematch-ergmTerm

Nodal attribute-based homophily effect for the second mode in a bipartite network

balance-ergmTerm

Balanced triads

blockdiag-ergmConstraint

Block-diagonal structure constraint

b2mindegree-ergmTerm

Minimum degree for the second mode in a bipartite network

bd-ergmConstraint

Constrain maximum and minimum vertex degree

Locate and call an ERGM term initialization function.

control.ergm.godfather

Control parameters for ergm.godfather().

Target statistics and model fit to a hypothetical 50,000-node network population with 50,000 nodes based on egocent

concurrent-ergmTerm

Concurrent node count

Auxiliary for Controlling ERGM Goodness-of-Fit Evaluation

concurrentties-ergmTerm

Concurrent tie count

coincidence-ergmTerm

Coincident node count for the second mode in a bipartite (aka two-mode) network

Ensures an Ergm Term and its Arguments Meet Appropriate Conditions

control.ergm.bridge

Auxiliaries for Controlling ergm.bridge.llr() and logLik.ergm()

Auxiliary for Controlling ERGM Fitting

ctriple-ergmTerm

control.simulate.ergm

Auxiliary for Controlling ERGM Simulation

degcrossprod-ergmTerm

Degree Cross-Product

degcor-ergmTerm

Degree Correlation

degrange-ergmTerm

cyclicalweights-ergmTerm

Cyclical weights

Directed dyadwise shared partners

cyclicalties-ergmTerm

Auxiliary for Controlling SAN

Computes and Returns the Degree Distribution Information for a Given Network

Directed edgewise shared partners

dgwdsp-ergmTerm

Geometrically weighted dyadwise shared partner distribution

dgwesp-ergmTerm

Geometrically weighted edgewise shared partner distribution

degreedist-ergmConstraint

Preserve the degree distribution of the given network

degree-ergmTerm

degree1.5-ergmTerm

Degree to the 3/2 power

degrees-ergmConstraint

Preserve the degree of each vertex of the given network

dgwnsp-ergmTerm

Geometrically weighted non-edgewise shared partner distribution

density-ergmTerm

dyadnoise-ergmConstraint

A soft constraint to adjust the sampled distribution for dyad-level noise with known perturbation probabilities

dyadnoise-ergmProposal

Dyadwise shared partners

edgecov-ergmTerm

Two versions of an E. Coli network dataset

Directed non-edgewise shared partners

dyadnoiseTNT-ergmProposal

.dyads-ergmConstraint

A meta-constraint indicating handling of arbitrary dyadic constraints

dyadcov-ergmTerm

Dyadic covariate

edges-ergmConstraint

Preserve the edge count of the given network

Number of edges in the network

equalto-ergmTerm

Number of dyads with values equal to a specific value (within tolerance)

enformulate.curved-deprecated

Convert a curved ERGM into a form suitable as initial values for the same ergm. Deprecated in 4.0.0.

egocentric-ergmConstraint

Preserve values of dyads incident on vertices with given attribute

Global options and term options for the ergm package

Sensible error and warning messages by ergm initializers

Functions that have been removed from this package

Internal ergm Objects

ergm-deprecated

Functions that will no longer be supported in future releases of the package

Parallel Processing in the ergm Package

Exponential-Family Random Graph Models

Obtain the set of informative dyads based on the network structure.

ergm.geodistdist

Calculate geodesic distance distribution for a network or edgelist

Calculate all possible vectors of statistics on a network for an ERGM

ergm.bridge.llr

Bridge sampling to evaluate ERGM log-likelihoods and log-likelihood ratios

Operations to map curved ergm() parameters onto canonical parameters

Fit, Simulate and Diagnose Exponential-Family Models for Networks

Calculate the exact loglikelihood for an ERGM

Compute the Sample Estimating Function Values of an ERGM.

Metropolis-Hastings Proposal Methods for ERGM MCMC

ergm.getnetwork

Acquire and verify the network from the LHS of an ergm formula and verify that it is a valid network.

A function to apply a given series of changes to a network.

Reference Measures for Exponential-Family Random Graph Models

Sample Space Constraints for Exponential-Family Random Graph Models

MCMC Hints for Exponential-Family Random Graph Models

Terms used in Exponential Family Random Graph Models

Keywords defined for Exponential-Family Random Graph Models

Find a maximizer to the psuedolikelihood function

ERGM Predictors and response for logistic regression calculation of MPLE

Initializes the parameters to bound degree during sampling

ergm_MCMC_sample

Internal Function to Sample Networks and Network Statistics

Internal Function to Perform Simulated Annealing

ergm_dyadgen_select

A helper function to select and construct a dyad generator for C.

Internal representation of an ergm network model

ergm_mk_std_op_namewrap

Combine an operator term's and a subterm's name in a standard fashion.

ergm_Cstate_clear

Deallocate the C data structures corresponding to an ergm_state left over from a .Call() run.

Curved settings for geometric weights for the gw* terms

ergm_edgecov_args

A common pattern for obtaining an edge covariate

Dynamic ERGM keyword registry

ergm_state_cache

A rudimentary cache for large objects

Edgewise shared partners

An API for specifying aspects of an ergm model in the LHS/basis network.

ergm_plot.mcmc.list

Plot MCMC list using lattice package graphics

ergm_symmetrize

Return a symmetrized version of a binary network

Functions to initialize the ergm_proposal object

ergm_propagate_ext.encode

Extended states for submodels

ergm_preprocess_response

Update the network and the response argument.

ergm_proposal_table

Table mapping reference,constraints, etc. to ERGM Metropolis-Hastings proposals

A Representation of ERGM state

Convert a curved ERGM into a corresponding "fixed" ERGM.

fixedas-ergmConstraint

Preserve and preclude edges

fixallbut-ergmConstraint

Preserve the dyad status in all but the given edges

faux.desert.high

Faux desert High School as a network object

faux.dixon.high

Faux dixon High School as a network object

Retrieve and check assumptions about vertex attributes (nodal covariates) in a network

Florentine Family Marriage and Business Ties Data as a "network" object

Goodreau's four node network as a "network" object

Goodreau's Faux Mesa High School as a network object

gwb2degree-ergmTerm

Geometrically weighted degree distribution for the second mode in a bipartite network

faux.magnolia.high

Goodreau's Faux Magnolia High School as a network object

gwb1dsp-ergmTerm

Geometrically weighted dyadwise shared partner distribution for dyads in the first bipartition

Multivariate version of coda's coda::geweke.diag().

gwdegree-ergmTerm

Geometrically weighted degree distribution

gwb1degree-ergmTerm

Geometrically weighted degree distribution for the first mode in a bipartite network

Geometrically weighted edgewise shared partner distribution

greaterthan-ergmTerm

Number of dyads with values strictly greater than a threshold

Geometrically weighted dyadwise shared partner distribution

gwb2dsp-ergmTerm

Geometrically weighted dyadwise shared partner distribution for dyads in the second bipartition

Conduct Goodness-of-Fit Diagnostics on a Exponential Family Random Graph Model

idegreedist-ergmConstraint

Preserve the indegree distribution

gwidegree-ergmTerm

Geometrically weighted in-degree distribution

Geometrically weighted nonedgewise shared partner distribution

idegrees-ergmConstraint

Preserve indegree for directed networks

gwodegree-ergmTerm

Geometrically weighted out-degree distribution

idegree-ergmTerm

intransitive-ergmTerm

Intransitive triads

hamming-ergmTerm

Hamming distance

hamming-ergmConstraint

Preserve the hamming distance to the given network (BROKEN: Do NOT Use)

idegrange-ergmTerm

In-degree range

idegree1.5-ergmTerm

In-degree to the 3/2 power

is.dyad.independent

Testing for dyad-independence

ininterval-ergmTerm

Number of dyads whose values are in an interval

isolatededges-ergmTerm

Function to check whether an ERGM fit or some aspect of it is valued

isolates-ergmTerm

Testing for curved exponential family

Kapferer's tailor shop data

Calculate the null model likelihood

mutual-ergmTerm

A logLik method for ergm fits.

localtriangle-ergmTerm

Triangles within neighborhoods

Mixing matrix cells and margins

m2star-ergmTerm

Mixed 2-stars, a.k.a 2-paths

nearsimmelian-ergmTerm

Near simmelian triads

meandeg-ergmTerm

Mean vertex degree

mcmc.diagnostics

Conduct MCMC diagnostics on a model fit

Synthetic network with 20 nodes and 28 edges

nodecov-ergmTerm

Main effect of a covariate

nodeicovar-ergmTerm

Covariance of in-dyad values incident on each actor

nodematch-ergmTerm

Uniform homophily and differential homophily

nodeicov-ergmTerm

Main effect of a covariate for in-edges

nodal_attributes-API

Helper functions for specifying nodal attribute levels

nodal_attributes

Specifying nodal attributes and their levels

nodeifactor-ergmTerm

Factor attribute effect for in-edges

nodecovar-ergmTerm

Covariance of undirected dyad values incident on each actor

nodefactor-ergmTerm

Factor attribute effect

A convenience container for a list of network objects, output by simulate.ergm among others.

nodeofactor-ergmTerm

Factor attribute effect for out-edges

Length of the parameter vector associated with an object or with its terms.

nodemix-ergmTerm

Nodal attribute mixing

nodeocovar-ergmTerm

Covariance of out-dyad values incident on each actor

observed-ergmConstraint

Preserve the observed dyads of the given network

Nonedgewise shared partners

odegrange-ergmTerm

Out-degree range

odegree-ergmTerm

nvattr.copy.network

Copy network- and vertex-level attributes between two network objects

nodeocov-ergmTerm

Main effect of a covariate for out-edges

odegrees-ergmConstraint

Preserve outdegree for directed networks

predict.formula

ERGM-based tie probabilities

Names of the parameters associated with an object.

randomtoggle-ergmProposal

Propose a randomly selected dyad to toggle

opentriad-ergmTerm

A lack-of-fit test for ERGMs

odegreedist-ergmConstraint

Preserve the outdegree distribution

odegree1.5-ergmTerm

Out-degree to the 3/2 power

receiver-ergmTerm

Receiver effect

simmelianties-ergmTerm

Ties in simmelian triads

search.ergmTerms

Search ERGM terms, constraints, references, hints, and proposals

RLE-Compressed Boolean Dyad Matrix

simmelian-ergmTerm

Simmelian triads

sender-ergmTerm

Draw from the distribution of an Exponential Family Random Graph Model

Identify the position of a point relative to the convex hull of a set of points

Cumulative network of positive affection within a monastery as a "network" object

Generate networks with a given set of network statistics

Longitudinal networks of positive affection within a monastery as a "network" object

sociality-ergmTerm

Undirected degree

sparse-ergmHint

Multivariate version of coda's spectrum0.ar().

simulate.formula

A simulate Method for formula objects that dispatches based on the Left-Hand Side

smalldiff-ergmTerm

Number of ties between actors with similar attribute values

Stratify Proposed Toggles by Mixing Type on a Vertex Attribute

Statnet Control

Summarizing ERGM Model Fits

smallerthan-ergmTerm

Number of dyads with values strictly smaller than a threshold

Sum of dyad values (optionally taken to a power)

threetrail-ergmTerm

transitive-ergmTerm

Transitive triads

transitiveties-ergmTerm

Transitive ties

summary.ergm_model

Evaluate network summary statistics from an initialized ergm model

triangle-ergmTerm

triadcensus-ergmTerm

transitiveweights-ergmTerm

Transitive weights

to_ergm_Cdouble.network

Methods to serialize objects into numeric vectors for passing to the C side.

summary.formula

Calculation of network or graph statistics or other attributes specified on a formula

twopath-ergmTerm

tripercent-ergmTerm

Triangle percentage

summary_formula

Dispatching a summary function based on the class of the LHS of a formula.

ttriple-ergmTerm

Transitive triples

wrap.ergm_model

Wrap a submodel's curved, empty network statistics, and extended state (read-only) specification (if present) for output from an InitErgmTerm or InitWtErgmTerm.

Update the edges in a network based on a matrix

Weighted Median