Enum: FunctionalForm

Shape of a term's relationship to the measure. A squared term with a negative coefficient is an inverted-U relationship, not a negative association, so non-linear and transformed terms must not be reported as linear. Open vocabulary: write the source's own wording in the field when nothing here fits.

URI: parse:FunctionalForm

Permissible Values

Value	Meaning	Description
linear	None	The measure changes by a constant amount per unit of the term
quadratic	None	A squared term
absolute	None	Unsigned-magnitude regressors such as an absolute prediction error or an unsi...
log	None	The term was log-transformed before entering the model

In Subsets

• mvp
• model_extracted

Identifier and Mapping Information

Schema Source

• from schema: https://neurostuff.org/schemas/neuroimaging-paper-parse

LinkML Source

name: FunctionalForm
description: 'Shape of a term''s relationship to the measure. A squared term with
  a negative coefficient is an inverted-U relationship, not a negative association,
  so non-linear and transformed terms must not be reported as linear. Open vocabulary:
  write the source''s own wording in the field when nothing here fits.'
in_subset:
- mvp
- model_extracted
from_schema: https://neurostuff.org/schemas/neuroimaging-paper-parse
rank: 1000
permissible_values:
  linear:
    text: linear
    description: The measure changes by a constant amount per unit of the term.
    in_subset:
    - mvp
    - model_extracted
  quadratic:
    text: quadratic
    description: A squared term. With a negative coefficient this is an inverted-U,
      not a negative association.
    in_subset:
    - mvp
    - model_extracted
  absolute:
    text: absolute
    description: Unsigned-magnitude regressors such as an absolute prediction error
      or an unsigned log-evidence.
    in_subset:
    - mvp
    - model_extracted
  log:
    text: log
    description: The term was log-transformed before entering the model.
    in_subset:
    - mvp
    - model_extracted