Welcome and apologies | |
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| Actions from last week | | - Actions from last week:
- Update ABNF with additional UTF characters - please refer to:
- SLPG members to bring back a use case for historical associations in queries
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| ECL - Executing maps | | Proposed extension to ECL to support the execution of maps (focusing on the resolution of historical refsets) - The specific use-case here comes initially from Jeremy and relates to being able to work with inactive concepts via the historical association maps. For example, given an ECL expression that identifies a set of concepts 'c' to be used for retrieving patient records, you probably also want to retrieve records for sameAs (c) and replacedWith (c)
- Example:
(< 72704001 |Fracture| AND ^ 900000000000527005 |SAME AS association reference set|) . 900000000000533001 |Association target component| - (900000000000527005 |SAME AS association reference set| . 900000000000533001 |Association target component| ): |Referenced component| = < |Fracture|
- Michael's existing approach: mapsTo(|SAME AS|, < |Fracture|)
Or mappedTo(…)
mappedFrom(|SAME AS|, |inactive concept|)
mappedFrom(|REPLACED BY|, |inactive concept|)
- Alternative suggestion: Use the substrate to include historical snapshots.
- E.g. Historical and current concepts that are fractures and have an associated morphology, but not historical morphologies
- ( ....) AND (...)
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| ECL - Returning attributes | Michael Lawley | Proposal from Michael: - Currently ECL expressions can match (return) concepts that are either the source or the target of a relationship triple (target is accessed via the 'reverse' notation or 'dot notation', but not the relationship type (ie attribute name) itself.
For example, I can write: << 404684003|Clinical finding| : 363698007|Finding site| = <<66019005|Limb structure| << 404684003|Clinical finding| . 363698007|Finding site| But I can't get all the attribute names that are used by << 404684003|Clinical finding| |
| Template Syntax | Linda Bird | New requirements - 2 slots must have the same / different values - for example (same morphology, different finding site:
[[ +id ]]: { 116676008 |Associated morphology| = [[ +id @morphology ]], 363698007 |finding site| = [[ +id @findingSite1 != << $findingSite2]] },
{ 116676008 |Associated morphology| = [[ +id @morphology ]], 363698007 |finding site| = [[ +id @findingSite2 != << $findingSite1]] } - 208510002 |Multiple fracture of clavicle, scapula and humerus (disorder)|
- 2 slots must have different values - for example:
- 208510002 |Multiple fracture of clavicle, scapula and humerus (disorder)|
- The value of 1 slot must subsume the value of another - for example:
- Specifying the definition status of a slot - for example (proximal primitive modelling):
- [[ + << 64572001 |Disease| {{ c.definitionStatus = primitive }} ]]
- Repeating role groups
- Default value for slots - for example:
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| URI Standard | | - Finalize and publish language and language instance URIs
- Proposal from Michael:
Provisional releases contain content that should be treated as somehow separate and distinct from normal production releases. However, to ingest, manipulate, and process with standard toolchains (e.g., terminology servers), it still needs to be identified while still remaining distinct from production content.
This proposal is that a parallel URI space (http://snomed.info/xsct) be set aside for such provisional releases. Mirroring the http://snomed.info/sct URI space, this would include: The choice of "xsct" follows the use of the "x" prefix in the corresponding package and file naming conventions. - Use case: Need to load preview releases into tool chain. However, these are not for production use - this could be dangerous. Could separate these for development. Identify these experimental releases explicitly. By making it an international standard, it promotes the idea for others to make this a safe practice. Question: How does SnowStorm handle this, with loading preview data?
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Query Language
- Summary from previous meetings
| | Examples: version and language Notes
- Allow nested where, version, language
- Scope of variables is inner query
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| Examples: where Notes - Allow nested variable definitions, but recommend that people don't due to readability
- Scope of variables is the inner query
- No recursion e.g X WHERE X = 1234 MINUS X
- ie can't use a variable in its own definition
- ie X is only known on the left of the corresponding WHERE, and not on the right of the WHERE
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Keywords for Term-based searching: - D.term
- D.term = "*heart*"
- D.term = wild:"*heart*"
- D.term = regex:".*heart.*"
- D.term = match:"hear att"
- D.term = (sv) wild: "*heart*"
- D.languageCode
- D.languageCode = "en"
- D.languageCode = "es"
- D.caseSignificanceId
- D.caseSignificanceId = 900000000000448009 |entire term case insensitive|
- D.caseSignificanceId = 900000000000017005 |entire term case sensitive|
- D.caseSignificanceId = 900000000000020002 |only initial character case insensitive|
- D.caseSignificance
- D.caseSignificance = "insensitive"
- D.caseSignificance = "sensitive"
- D.caseSignificance = "initialCharInsensitive"
- D.typeId
- D.typeId = 900000000000003001 |fully specified name|
- D.typeId = 900000000000013009 |synonym|
- D.typeId = 900000000000550004 |definition|
- D.type
- D.type = "FSN"
- D.type = "fullySpecifiedName"
- D.type = "synonym"
- D.type = "textDefinition"
- D.acceptabilityId
- D.acceptabilityId = 900000000000549004 |acceptable|
- D.acceptabilityId = 900000000000548007 |preferred|
- D.acceptability
- D.acceptability = "acceptable"
- D.acceptability = "preferred"
Additional Syntactic Sugar - FSN
- FSN = "*heart"
- D.term = "*heart", D.type = "FSN"
- D.term = "*heart", D.typeId = 900000000000003001 |fully specified name|
- FSN = "*heart" LANGUAGE X
- D.term = "*heart", D.type = "FSN", D.acceptability = * LANGUAGE X
- D.term = "*heart", D.typeId = 900000000000003001 |fully specified name|, acceptabilityId = * LANGUAGE X
- synonym
- synonym = "*heart"
- D.term = "*heart", D.type = "synonym"
- D.term = "*heart", D.typeId = 900000000000013009 |synonym|
- synonym = "*heart" LANGUAGE X
- D.term = "*heart", D.type = "synonym", D.acceptability = * LANGUAGE X
- D.term = "*heart", D.typeId = 900000000000013009 |synonym|, (D.acceptabilityId = 900000000000549004 |acceptable| OR D.acceptabilityId = 900000000000548007 |preferred|) LANGUAGE X
- synonymOrFSN
- synonymOrFSN = "*heart"
- synonym = "*heart" OR FSN = "*heart"
- D.term = "*heart", (D.type = "synonym" OR D.type = "fullySpecifiedName")
- synonymOrFSN = "*heart" LANGUAGE X
- synonym = "*heart" OR FSN = "*heart" LANGUAGE X
- D.term = "*heart", (D.type = "synonym" OR D.type = "fullySpecifiedName"), D.acceptability = * LANGUAGE X
- textDefinition
- textDefinition = "*heart"
- D.term = "*heart", D.type = "definition"
- D.term = "*heart", D.typeId = 900000000000550004 |definition|
- textDefinition = "*heart" LANGUAGE X
- D.term = "*heart", D.type = "definition", D.acceptability = * LANGUAGE X
- D.term = "*heart", D.typeId = 900000000000550004 |definition|, D.acceptabilityId = * LANGUAGE X
- Unacceptable Terms
- (D.term = "*heart") MINUS (D.term = "*heart", D.acceptability = * LANGUAGE X)
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Language preferences using multiple language reference sets LRSs that use the same Language tend to use 'Addition' - i.e. child LRS only includes additional acceptable terms, but can override the preferred term E.g. Regional LRS that adds local dialect to a National LRS E.g. Specialty-specific LRS E.g. Irish LRS that adds local preferences to the en-GB LRS
LRSs that define a translation to a different language tend to use 'Replacement' - i.e. child LRS replaces set of acceptable and preferred terms for any associated concept
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| Other topics | | |
| Confirm next meeting date/time | | The next SLPG meeting will be held in 2 weeks at 20:00 UTC on Wednesday 6th February. |