John Walker (@wohnjalker) header
John Walker (@wohnjalker) profile picture

Implementing and rolling out data models, processes and tooling for product traceability, product information management and publication. Co-founder @Semaku

Eindhoven
Joined March 2012
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Current state of #SemanticWeb
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upstream connect error or disconnect/reset before headers. reset reason: overflow
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Splitting the P, am I doing this right?
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Mmmm... crumpets
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Expired certificate on prefix.cc anyone know who's taking care of that site these days? @namedgraph @danbri @kidehen
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Looking at capturing provenance information about data processed by code running on AWS Lambda. Wondering whether to use prov:SoftwareAgent to represent the function or a specific execution environment. Ideas welcome!
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I've got some RDF Patch documents describing changes to some resource over time. If I want to make those patches available, should each patch document get a distinct URL, and/or are those different states of the same (abstract) patch resource?
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I'm using a versioned S3 bucket to store the documents, so can either have each patch with a distinct object key, or use the same key for all patches to same resource and stack up the patches as versions of that object... choices 🤔
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In SPARQL is it possible to enforce constraints on nodes traversed in a arbitrary-length property path? For example, I want to find schema:knows+ with the constraint that all nodes along the path have schema:gender schema:Female
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2) Construct/insert statements with the constraint baked in and then do path across those statements: construct { ?s ex:knowsFemale ?o } where { ?s schema:knows ?o . ?o schema:gender schema:Female . }
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Are there other approaches to consider?
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Does anyone using #Amazon #Neptune have a good way to monitor bulk load jobs, other that repeat polling of the Get-Status API? I'm looking for something that is event driven and can be easily integrated into a Step Functions workflow. @oralassila
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i.e. enter a wait state until the bulk load completes and then continue to a next state depending on if the import succeeded or failed.
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Found this example that uses "lame" repeat polling. It might be a basis, but it would be good to have some back off mechanism for long-running imports. github.com/aws-samples/etl-i…
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Look what arrived today 🧐
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Doing random stuff in XSLT used to be a hard, but I see there is now a random-number-generator function 👀 w3.org/TR/xpath-functions-31…
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