A generalized linear mixed model (GLMM) extends the linear model so that the
target can have a non-normal distribution, is linearly related to the factors and covariates via a
specified link function, and so that the observations can be correlated. GLMM models cover a wide
variety of models, from simple linear regression to complex multilevel models for non-normal
longitudinal data.
Table 1. glmmnode properties
glmmnode Properties
Values
Property description
residual_subject_spec
structured
The combination of values of the specified categorical fields that uniquely define subjects
within the data set
repeated_measures
structured
Fields used to identify repeated observations.
residual_group_spec
[field1 ... fieldN]
Fields that define independent sets of repeated effects covariance parameters.
Indicates whether to use target defined in upstream node (false) or custom
target specified by target_field (true).
target_field
field
Field to use as target if custom_target is true.
use_trials
flag
Indicates whether additional field or value specifying number of trials is to be used when
target response is a number of events occurring in a set of trials. Default is
false.
use_field_or_value
Field Value
Indicates whether field (default) or value is used to specify number of trials.
trials_field
field
Field to use to specify number of trials.
trials_value
integer
Value to use to specify number of trials. If specified, minimum value is 1.
use_custom_target_reference
flag
Indicates whether custom reference category is to be used for a categorical target. Default
is false.
target_reference_value
string
Reference category to use if use_custom_target_reference is
true.
Common models for distribution of values for target. Choose Custom to
specify a distribution from the list provided bytarget_distribution.
target_distribution
Normal Binomial Multinomial Gamma Inverse NegativeBinomial Poisson
Distribution of values for target when dist_link_combination is
Custom.
link_function_type
Identity LogC Log CLOGLOGLogit NLOGLOGPROBIT POWER CAUCHIT
Link function to relate target
values to predictors.
If target_distribution is Binomial you can use any
of the listed link functions.
If target_distribution is Multinomial you can use CLOGLOG, CAUCHIT, LOGIT, NLOGLOG, or PROBIT.
If target_distribution is
anything other than Binomial or Multinomial you can use IDENTITY, LOG, or POWER.
link_function_param
number
Link function parameter value to use. Only applicable if
normal_link_function or link_function_type is
POWER.
use_predefined_inputs
flag
Indicates whether fixed effect fields are to be those defined upstream as input fields
(true) or those from fixed_effects_list (false).
Default is false.
fixed_effects_list
structured
If use_predefined_inputs is false, specifies the input
fields to use as fixed effect fields.
use_intercept
flag
If true (default), includes the intercept in the model.
random_effects_list
structured
List of fields to specify as random effects.
regression_weight_field
field
Field to use as analysis weight field.
use_offset
Noneoffset_valueoffset_field
Indicates how offset is specified. Value None means no offset is
used.
offset_value
number
Value to use for offset if use_offset is set to
offset_value.
offset_field
field
Field to use for offset value if use_offset is set to
offset_field.
target_category_order
AscendingDescendingData
Sorting order for categorical targets. Value Data specifies using the sort
order found in the data. Default is Ascending.
inputs_category_order
AscendingDescendingData
Sorting order for categorical predictors. Value Data specifies using the
sort order found in the data. Default is Ascending.
max_iterations
integer
Maximum number of iterations the algorithm will perform. A non-negative integer; default is
100.
confidence_level
integer
Confidence level used to compute interval estimates of the model coefficients. A non-negative
integer; maximum is 100, default is 95.
degrees_of_freedom_method
FixedVaried
Specifies how degrees of freedom are computed for significance test.
test_fixed_effects_coeffecients
ModelRobust
Method for computing the parameter estimates covariance matrix.
use_p_converge
flag
Option for parameter convergence.
p_converge
number
Blank, or any positive value.
p_converge_type
AbsoluteRelative
use_l_converge
flag
Option for log-likelihood convergence.
l_converge
number
Blank, or any positive value.
l_converge_type
AbsoluteRelative
use_h_converge
flag
Option for Hessian convergence.
h_converge
number
Blank, or any positive value.
h_converge_type
AbsoluteRelative
max_fisher_step
integer
sing_tolerance
number
use_model_name
flag
Indicates whether to specify a custom name for the model (true) or to use
the system-generated name (false). Default is false.
model_name
string
If use_model_name is true, specifies the model name to
use.
confidence
onProbabilityonIncrease
Basis for computing scoring confidence value: highest predicted probability, or difference
between highest and second highest predicted probabilities.
score_category_probabilities
flag
If true, produces predicted probabilities for categorical targets. Default
is false.
max_categories
integer
If score_category_probabilities is true, specifies maximum
number of categories to save.
score_propensity
flag
If true, produces propensity scores for flag target fields that indicate
likelihood of "true" outcome for field.
emeans
structure
For each categorical field from the fixed effects list, specifies whether to produce
estimated marginal means.
covariance_list
structure
For each continuous field from the fixed effects list, specifies whether to use the mean or a
custom value when computing estimated marginal means.
mean_scale
OriginalTransformed
Specifies whether to compute estimated marginal means based on the original scale of the
target (default) or on the link function transformation.
comparison_adjustment_method
LSDSEQBONFERRONISEQSIDAK
Adjustment method to use when performing hypothesis tests with multiple contrasts.
use_trials_field_or_value
"field""value"
residual_subject_ui_spec
array
Residual subject specification: The combination of values of the specified categorical fields
should uniquely define subjects within the dataset. For example, a single Patient ID field
should be sufficient to define subjects in a single hospital, but the combination of Hospital
ID and Patient ID may be necessary if patient identification numbers are not unique
across hospitals.
repeated_ui_measures
array
The fields specified here are used to identify repeated observations. For example, a single
variable Week might identify the 10 weeks of observations in a medical study, or Month
and Day might be used together to identify daily observations over the course of a
year.
spatial_field
array
The variables in this list specify the coordinates of the repeated observations when one of
the spatial covariance types is selected for the repeated covariance type.
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