文章

Calculating Service Area, Part 3: Demographics

My Musings · EN

Calculating Service Area, Part 4: Next Steps

My Musings · EN

Stop Spacing, Part 1

My Musings · EN

Visualizing System-wide Headway

My Musings · EN

Why I'm a Luddite, kind-of (Part 2)

My Musings · EN

ICRA 2026

My experience and learnings from attending the International Conference on Robotics and Automation in Vienna

Jay Ranpariya · EN

Sleep

Personal beliefs and habits for protecting sleep: wind-down routines, light exposure, naps, plus notes on the circadian biology behind them.

Jay Ranpariya · EN

Recon

A working reference for bug bounty recon: horizontal and vertical asset correlation, subdomain enumeration, OSINT tooling, and early exploitation wins.

Jay Ranpariya · EN

Exercise

Working beliefs on training frequency, sets, and recovery, plus a running list of strength and fitness resources to dig into.

Jay Ranpariya · EN

AGI

My AGI research roadmap: sixteen subfields to work through, a month-by-month reading list built like a self-taught graduate seminar, and the people worth following.

Jay Ranpariya · EN

Forgotten Legends

A gallery of overlooked minds in computation, information theory, physics, and cognition, thinkers whose ideas outran their fame.

Jay Ranpariya · EN

building better judgement

Things are moving fast, edge remains in being able to figure out what's going to grow.

Jay Ranpariya · EN

neuro-inspired ai

How do nervous systems learn, remember and adapt, and how can we use principles behind them to build better AI and Physical AI?

Jay Ranpariya · EN

EHI → FHIR mappings that get better with every record

Rebuilding (and improvig) Epic's FHIR from one patient's EHI export -- and how a tiny community of data contributions could cultivate a new kind of mapping pipeline. code: github.com/jmandel/ehi-to-fhir interactive report: joshuamandel.com/ehi-to-fhir Under ONC's health-IT certification rules, any patient can request a…

Interop Blog · EN

"Data mapping" means data missing!

Every step that requires a provider to map internal codes to external standards is a step where data drops out. If you're looking to work with health data, you might think you will be good to go when: 1. The regulations require it. 2. The standards specify how to expose it. 3. The EHR is certified to the standards. 4.…

Interop Blog · EN

Building a Greenbergolem

--- Isaac Kohane posted a challenge on April 16: build a citation-distortion network like Steven Greenberg's 2009 BMJ figure, but AI-driven and reproducible for any claim. "There is a lot of AI work in this area but none to my knowledge could reproduce the figure below. Please prove me wrong. citationNetworks" Greenber…

Interop Blog · EN

ACO Quality Reporting Options (2x2)

As I come up to speed in a new role, I'm learning a lot about how ACOs collect clinical data, calculate quality measures for CMS, and report them. The rules are... complex, especially for a newcomer. And there are multiple options with distinct requirements and implications. This article is just consolidating my nascen…

Interop Blog · EN

Medicare Wants to Rein In At-Home Health Monitoring. Is It Cutting Fat or Muscle?

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Interop Blog · EN

SMART Health Links for Imaging, Too (Or: How to Kill the Clipboard while Ditching the Disk)

TL;DR: Open a sample study and learn how the protocol works. And: spec + code on GH. I'm an unusual patient: I publish my own health records in a public GitHub repository, imaging and EHI export included. Real clinical data is scarce, and developers building health software often never see a realistic example of the fo…

Interop Blog · EN

Interoperability vs. Absorption: Who Gets to Be the Agent?

Epic just announced "Connectors," a framework that invites outside software developers to plug their services into Epic’s AI assistants using the Model Context Protocol (MCP). Testing begins late this year, with broader distribution through the Epic Showroom starting in March 2027. On the patient side, Epic describes w…

Interop Blog · EN

2026 AI Agents vs. 2022 FHIR Compliance

I built Health Skillz to connect to EHRs via SMART on FHIR, but since all my own records are in Epic, I’d never bothered registering or testing it elsewhere. Then a colleague wanted to pull her records from eClinicalWorks. I pointed GPT-6 Astra at the eCW developer portal and asked it to register an account, create an…

Interop Blog · EN

How do caches work?

I think it is fair to say that most people have an idea of what caching does at a variety of levels. To someone not in tech, "clearing your cache" (also those yummy cookies!) is a way to get your browser to update. So it is understood that some data is stored pretty close to you. To someone in tech, you may understand that caching data is a way to keep it accessible so that you don't have to go and retrieve it. Content Delivery Networks (CDN's) cache webpages (and other data that is distributed) at different locations so that your performance as a user is faster. Great, makes sense! For both o

Jeremy Maslanko · EN

I finally learned how to study

At the age of 30, I have finally found the most effective way for me to learn a subject. I am currently in Georgia Tech's OMSCS program and have been learning about computer architecture. With online lectures, it can sometimes be challenging for me to stay engaged. The vidoes may be playing and I am looking at the screen, but I zone out and end up not knowing what was just taught. This snowballs as I then go on to the next video where I get even more confused because I do not know the concepts that we are building off of. I have never really been good at taking notes and typically when I study

Jeremy Maslanko · EN

A simple LRU Cache in Python

In a previous post , I explained some of the basic concepts of how caches work in hardware at the CPU level. As I mentioned to start that post, caching is used in many different areas of computer science. So how can you use this new knowledge you have gained? One way you might want to implement a cache is if you have expensive database calls. Let's say that you have a web app where you are displaying movie information. When a user searches for a movie, your backend will query your database for the information related to that movie. For a simple web app with a small number of active users, you

Jeremy Maslanko · EN