Welcome and apologies | |
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| Actions from last week | | - Actions from last week:
- Post authoratative ANTLR syntax used by SNOMED International
- Update ABNF with additional UTF characters - please refer to:
- SLPG members to bring back a use case for precomputed transitive and role chained relationships
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ECL - Transitivity, Reflexivity &
Role chaining | | Proposed extension to ECL to support transitive relationships and role chaining (to align with new enhanced DL axioms) - Example 1
- Direct relationship
- < |Body structure|: << 774081006 |Proper part of| = << 51185008 |Chest|
- Transitive relationship
- < |Body structure|: << 774081006 |Proper part of|* = << 51185008 |Chest|
- <<(< |Body structure|: << 774081006 |Proper part of| = << 51185008 |Chest|)
- Proposal to consider:
- < |Disease|: |Causative agent|* = << |Staph aureus|
- < |Disease|: (|Due to| OR |Causative agent|)* = << |Staph aureus|
- < |Disease|: (|Due to|* OR |Causative agent|*) = << |Staph aureus|
- < |Disease|: ** = << |Staph aureus|
- Example 2
- Direct relationship
- < 71388002 ||: 363701004 |Direct substance| = 372687004 |Amoxicillin|
- Role chained relationship (via 738774007 |is modification of|)
- < 71388002 ||: 363701004 |Direct substance|* = 372687004 |Amoxicillin|
- <<(< 71388002 ||: 363701004 |Direct substance| = 372687004 |Amoxicillin|)
What implementation support will be required? Should we provide easy access to those relationships that can be inferred by transitivity and role chains (note: These will be excluded from the inferred relationship file as they are redundant). If so, then what format should be used - for example, a TSV file with the following columns: - sourceId
- destinationId
- typeId
- relationshipGroup
Things without compelling use cases won't be prioritised. |
| 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 value
- 2 slots must have different values
- The value of 1 slot must subsume the value of another
- Default value for slots
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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. |