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Nominalism versus Ontology
Lafon-Rochet 2005 … does it exist? Nominalism is a philosophical doctrine usually understood to entail a rejection of universals, in favour of the belief that only the concrete exists. Universals are...
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Software – from Development to Use and Ownership
Here’s an infographic (alright, it’s just a diagram) I created over a decade ago, randomly extracted from the archives. I think it’s almost self-explanatory. Here’s a few more slides using this. I...
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Design-by-Contract (DbC) v Test-Driven Design (TDD)
A software contract in the Eiffel language Another bit of software engineering knowledge from my archive relates to two well-known formal quality methods used in software development. This is from a...
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Directions in clinical guideline programming – CHA2DS2-VASc
CHA2DS2-VASc score calculator, by Gregory Lip MD The above shows a typical web form calculator for the CHA2DS2-VASc score, used for estimating the risk of stroke in patients with non-rheumatic atrial...
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What is interoperability?
There are some rather obscure definitions of health IT’s favourite term interoperability floating around, for example: Wikipedia: Interoperability is a characteristic of a product or system, whose...
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The Health IT Platform – a definition
Following on from various posts in the past, including my 2014 post What is an open platform?, I thought it might be time to post a succinct (as possible) definition of the platform idea, for...
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A Lingua Franca for e-health takes shape with GraphiteHealth
Colleagues in e-health often say to me: why don’t you make openEHR easier to map to <insert popular interop standard> (used to be HL7v3, then HL7 CDA, now, HL7 FHIR… DSTU2/3/4/5?). To which I...
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Why using expressions in workflow is wrong
(Figure from ModernAnalyst.com) One of the basic elements of design common to all workflow languages, including YAWL and BPMN, is the inclusion of logical expressions on decision nodes. This seems...
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openEHR turns 20 today
openEHR was officially created on 13 March 2003, 20 years ago today. Prof David Ingram thought of the name, and he and a small band of optimists – Dr Sam Heard, Dr Dipak Kalra, David Lloyd and myself...
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The future of healthcare IT
[Image: from CatSalut website] A slide on the future of HIT, from the openEHR conference hosted by the Catalan Health System (CatSalut), 06 June 2023, Barcelona. WHAT knowledge-based – computational...
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