move definition of derivatives

bids-standard · May 6, 2024 · cfc274f · cfc274f
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diff --git a/src/derivatives/introduction.md b/src/derivatives/introduction.md
@@ -6,9 +6,7 @@ outputs in subsequent processing.
 Standardizing derivatives is motivated by use cases where formalized
 machine-readable access to processed data enables higher-level processing.
 
-The following sections cover additions to and divergences from "raw" BIDS.
-Raw data are data that have been curated into BIDS from a non-BIDS source.
-If a dataset is derived from at least one other valid BIDS dataset, then it is a derivative dataset.
+The following sections cover additions to and divergences from raw BIDS.
 
 Examples:
 

diff --git a/src/schema/objects/common_principles.yaml b/src/schema/objects/common_principles.yaml
@@ -46,6 +46,9 @@ dataset:
   description: |
     A set of neuroimaging and behavioral data acquired for a purpose of a particular study.
     A dataset consists of data acquired from one or more subjects, possibly from multiple sessions.
+derivative:
+  display_name: derivative dataset
+  description: If a dataset is derived from at least one other valid BIDS dataset, then it is a derivative dataset.
 deprecated:
   display_name: DEPRECATED
   description: |
@@ -97,6 +100,9 @@ modality:
     the technique is sufficiently uniform to define the modalities `eeg`, `meg` and `ieeg`.
     When applicable, the modality is indicated in the **suffix**.
     The modality may overlap with, but should not be confused with the **data type**.
+raw:
+  display_name: raw dataset
+  description: A raw BIDS dataset is data that have been curated into BIDS from a non-BIDS source.
 run:
   display_name: Run
   description: |

diff --git a/src/schema/rules/common_principles.yaml b/src/schema/rules/common_principles.yaml
@@ -16,3 +16,5 @@
 - suffix
 - extension
 - deprecated
+- raw
+- derivative