Reject Future-Filled Weight

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Summary

EditUnder reviewWhat this benchmark means

README.md

Public entries: Python and R. Passing coverage requires an installed inventory.

Goal: fill a missing weight from the next measurement's filled weight, carrying ADT, AVAL, and AVALF for each measurement.

Input: collected weight records carrying the collection date (VSDTC), the test code (VSTESTCD), and the collected result (VSSTRESN).

Variables:

ADT would be the analysis date taken from the collection date.
AVAL would be the collected weight taken from the collected result, and missing when no measurement was taken.
AVALF would be the current weight or, when it is missing, the filled weight of a later measurement in date order. That later measurement's filled value is itself being calculated.

Note: the requested fill depends on a future calculated value rather than an earlier completed result. The run is rejected before any data is read and no artifact is accepted.

How to fix

Carry from the collected series rather than from the filled output. Search the earlier collected values, then take the first available of AVAL and PRIOR:

- name: PRIOR
  type: float
  derivation:
    locf:
      source: AVAL
      include_current: false
      window:
        group_by: [STUDYID, USUBJID, PARAMCD]
        order_by: [ADT, VSSEQ]

- name: AVALF
  type: float
  derivation:
    first_available:
      sources: [AVAL, PRIOR]

Keep PRIOR internal by omitting it from output.columns.

Expected failure

Editthe run is rejected; no artifact is accepted

expected/error.yaml

phase: validation
condition: dependency_cycle
rule: COLUMN-6

expected/error.yaml

phase: validation
condition: dependency_cycle
spec_paths:
  - columns.AVALF.derivation.first_available
  - columns.PRIORF.derivation.row_value
rule: COLUMN-6
context:
  cycle: [AVALF, PRIORF, AVALF]

YAML specification

1 spec file

spec.yaml

Edit62 lines

1yamaa: "1.0"2type: spec3model: ADaM4domain: ADVS5keys: [STUDYID, USUBJID, VSSEQ]6input:7  VS: {path: input/vs.csv, types: {VSDTC: date}}89output:10  path: advs.csv11  columns: [STUDYID, USUBJID, VSSEQ, PARAMCD, ADT, AVAL, AVALF]1213columns:14  - name: STUDYID15    type: str16    label: Study Identifier17    derivation: VS.STUDYID1819  - name: USUBJID20    type: str21    label: Unique Subject Identifier22    derivation: VS.USUBJID2324  - name: VSSEQ25    type: int26    label: Sequence Number27    derivation: VS.VSSEQ2829  - name: PARAMCD30    type: str31    label: Parameter Code32    derivation: VS.VSTESTCD3334  - name: ADT35    type: date36    label: Analysis Date37    derivation: VS.VSDTC3839  - name: AVAL40    type: float41    label: Analysis Value42    derivation: VS.VSSTRESN4344  # The defect: the proposed prior value reads a future filled result.45  # Unlike a backward read, that cycle has no earlier completed value.46  - name: AVALF47    type: float48    label: Filled Analysis Value49    derivation:50      first_available:51        sources: [AVAL, PRIORF]5253  - name: PRIORF54    type: float55    label: Prior Filled Analysis Value56    derivation:57      row_value:58        source: AVALF59        offset: 160        window:61          group_by: [STUDYID, USUBJID, PARAMCD]62          order_by: [ADT, VSSEQ]

Inputs

Under review1 source file

input/vs.csv

Edit4 rows

input/vs.csv
STUDYID	VSSEQ	VSDTC	VSTESTCD	VSSTRESN
PILOT7	1	2025-01-05	WEIGHT	70.5
PILOT7	2	2025-02-05	WEIGHT	—
PILOT7	3	2025-03-05	WEIGHT	—
PILOT7	4	2025-04-05	WEIGHT	72.0

Unexpected Output

Under reviewNo artifact is produced

No fixture files in this directory.

Shaded columns are derived— = missing value

Human review and assessment

Dataset Name	Variable Name	Variable Label	Type	Codelist/Controlled Terms	Computational Method	Origin
ADVS	STUDYID	Study Identifier	character		Copy value from VS.STUDYID.	Predecessor
ADVS	USUBJID	Unique Subject Identifier	character		Copy value from VS.USUBJID.	Predecessor
ADVS	VSSEQ	Sequence Number	numeric		Copy value from VS.VSSEQ.	Predecessor
ADVS	PARAMCD	Parameter Code	character		Copy value from VS.VSTESTCD.	Predecessor
ADVS	ADT	Analysis Date	numeric	ISO 8601	Copy value from VS.VSDTC.	Predecessor
ADVS	AVAL	Analysis Value	numeric		Copy value from VS.VSSTRESN.	Predecessor
ADVS	AVALF	Filled Analysis Value	numeric		First non-missing of AVAL and PRIORF.	Derived

Version	Date	Author	Description
1.7	2026-10-20	yamaa docs build	Read a specification in the 1.0 surface as its 0.5 counterpart; state that missing values stay missing where a mapping declares no missing handler, and leave out a declared missing answer that restates a handler's default
1.6	2026-10-17	yamaa docs build	Describe collected date parts written as ISO 8601 date text and times of day counted in seconds since midnight
1.5	2026-10-17	yamaa docs build	Name collected precision in words instead of letter codes; state imputation fallbacks, minimum source precision, bounds ignored outside the collected period, and invalid text with no handler as an error; describe date and datetime shifts, imputation flag codes, and partial text giving no date part
1.4	2026-10-15	yamaa docs build	State datetime precision codes through the hour and minute, and complete only the time parts a collected datetime lacks
1.3	2026-09-29	yamaa docs build	Show study codelist names, external dictionaries, and ISO 8601 formats in variable rows; list the document's codelist values and metadata
1.2	2026-09-29	yamaa docs build	Classify ADaM copies from a declared input as Predecessor and recodes as Derived, and SDTM recodes of locally derived columns as Derived
1.1	2026-09-29	yamaa docs build	Resolve lookups into the donor record they select, and give every derivation shape a plain-language rule instead of its raw YAML
1.0		yamaa docs build	Initial generation from spec.yaml

How to fix

input/vs.csv

Your review

Mapping spec