Agile Java Man

Musings on Data Science, Software Architecture, Functional Programming and whatnot.

Sunday, May 17, 2026

R-squared

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R 2 is a good way to test how well your model describes the data. It is literally 1 - (variance you predict / total variance) It is theref...
Friday, May 15, 2026

Polaris and Cloud tokens

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Polaris rather pleasingly mints cloud tokens that are subscoped to a directory in a bucket or blob container for AWS and GCP. That is, even ...
Wednesday, May 6, 2026

The state of Polaris

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Huzzah! My PR for Apache Polaris has been accepted and merged with its main branch! Here are some miscellaneous notes I made as I looked a...
Monday, April 20, 2026

Cloud Topologies and Azure

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All clouds follow a similar pattern when it comes to networking. All of them have: a VPN (virtual private network) that is an entirely isol...
Tuesday, April 7, 2026

Network security for numpties

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Some concepts and terminology: STUN (Session Traversal Utility for NAT) STUN servers can be queried via the STUN protocol to give the IP add...
Friday, March 20, 2026

Multi-cloud Devops tips

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I'm using multiple clouds on a regular basis and constantly need to jump between them. So, here are some commands I use often: Kubernete...
Saturday, March 14, 2026

What happens in an LLM? (part 1)

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A nice overview that's detailed but not too intricate is here  [blog of SteelPh0enix AKA Wojciech Olech] Note that when using a fully tr...
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Phillip Henry
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