TFortunato

Joined 16 years ago

Karma
778
Submissions
259
Member since
Jan 23
I build robots.

Current: Staff Robotics Engineer at Chewy

Prior: Atlas @ Boston Dynamic; Robotics and Embedded Systems Engineering @ Amazon Robotics, Rethink Robotics, iRobot; Automation Engineering @ Ginkgo Bioworks.

Early Career: Electrical Engineer in Semiconductor Industry @ Applied Materials, Analog Devices, Allegro Microsystems

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Recent submissions

Comment · 1 year ago
Comment · 1 year ago
At Amazon Robotics we built a robot control system that executed state charts (described in an extended version of SCXML) in real-time for managing the core behaviors of the robot.

To help people not have write the charts by hand, we built a DSL (originally in python, then in Kotlin), to author robot behaviors that then compiled down to SCXML. Conditions on guards were written in a tiny expression language we wrote, enabling you to look at various signals from the hardware and software at runtime and make decisions based off them.

The nice part of this setup was that it opened up a path for doing more formal analysis on the behavior. E.g. you could easily find "terminal" states that you could enter but not leave. You can also imagine things like checking things like which states in a parallel or in concurrently running machines, aren't allowed to be active, and verifying there is no path in the state graph that allowed that to occur. There were other nice properties as well, like getting a graphical visualization of your program state "for free"

It was definitely a more constrained model than a "full featured" programming language, but for our use case, controlling machines in a reliable way, it worked out very well!

Comment · 1 year ago
OK, on reflection, there are a few things,

Kace's response is absolutely right that the summaries tend to be a place where there is a big giveaway.

There is also something about the way they use "you" and the article itself... E.g. the "you now have a comprehensive resource to understand and apply ML math. Point anyone asking about core ML math here..." bit. This isn't something you would really expect to read in a human written article. It's a ChatBot presenting it's work to "you", the single user it's conversing with, not an author addressing their readers. Even if you ask the bot to write you an article for a blog, a lot of times it's response tends to mix in these chatty bits that address the user or directly references to the users questions / prompts in some way, which can be really jarring when transferred to a different medium w/o some editing

Comment · 1 year ago
This is probably not going to be a very helpful answer, but I sort of think of it this way: you probably have favorite authors or artist (or maybe some really dislike!), where you could probably take a look at a piece of their work, even if its new to you, and immediately recognize their voice & style.

A lot of LLM chat models have a very particular voice and style they use by default, especially in these longer form "Sure, I can help you write a blog article about X!" type responses. Some pieces of writing just scream "ChatGPT wrote this", even if they don't include em-dashes, hah!

Comment · 2 years ago
Comment · 2 years ago
Comment · 2 years ago
I don't know his story, but I had a little chuckle at the juxtaposition of "quite good at opsec" with "in federal custody"
Comment · 2 years ago
I think they are stating the odds of the federal government actually allowing secession to go through would be...minimal at best, given these assets in the state.
Comment · 2 years ago
I'm a big fan of approaches like this, that combine deep learning / newer techniques w/ "GOFAI" approaches.
Comment · 2 years ago
Brought back memories of taking french in middle school for me! I remember very little of that class, save the last few letters of the alphabet "w,x,y,z" as something like "double-vay, eex, igrek, zed" burned into my brain.

(Edit: I'm also learning quite a bit from the comments! "igrek" seems more common than I realized, and the american / english "why" pronunciation I grew up with may be the outlier!)

Comment · 2 years ago
Comment · 2 years ago
Comment · 2 years ago
Looks like that was one of the references cited in this paper.
Comment · 3 years ago
Parent post said "science/health", nothing about preventing crime or jailing more people

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