Neo4j

shane_a_husson · 12-19-2018

I have a simple model in which a Patient has many events. Each event has a start date and a category like 'medication'. It is normal for a patient to have 10s of events of each category. I would like to find patients where: a measurement event happen...

shane_a_husson · 12-18-2018

I'm testing out Neo4j for a potential use case we have using the Crime Investigation sandbox. Essentially I want to find a sequence of crimes that happened in the same location. In particular: "Burglary" crimes that happened after "Bicycle theft" in ...

shane_a_husson · 12-20-2018

Thanks @michael.hunger, the query you suggested is much faster and seems to scale as more filters are added. I'll continue to investigate it.

shane_a_husson · 12-20-2018

Yeah we only need to do this in a non-cross-patient way. If you only do this in a non-cross-patient way I'd maintain for each patient a chain of events. If "same day" is an important aspect of your domain, you can overlay the rather generic AFTER ...

shane_a_husson · 12-20-2018

Thanks for the ideas @stefan.armbruster. stefan.armbruster: consider adding [:AFTER] relationships between Events of the same person. So you have a timeline of that patient explicitly and don't need to compare dates - that approach is what I cal...

shane_a_husson · 12-19-2018

Thanks @joe.depeau, that query is indeed the one I was looking for. I now have a related performance issue though which I created a separate post for: How to improve the performance of a query that compares properties relative to other nodes?. Any he...

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How to improve the performance of a query that compares properties relative to other nodes?

Find multiple crimes in the same location but happened at a relative time to each other

Re: How to improve the performance of a query that compares properties relative to other nodes?

Re: How to improve the performance of a query that compares properties relative to other nodes?

Re: How to improve the performance of a query that compares properties relative to other nodes?

Re: Find multiple crimes in the same location but happened at a relative time to each other