Stephen Martin (@smartin2018) header
Stephen Martin (@smartin2018) profile picture

Stephen Martin

@smartin2018

Probabilistic modeling and machine learning nerd Social Psych PhD, quantitative methods Data Scientist Manager, Comscore - Innovation Research Team.

 Davis, CA
srmart.in
Joined June 2017
  • Tweets6.2K
  • Following712
  • Followers1.3K
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Photo by Stephen Martin (@smartin2018)Photo by Stephen Martin (@smartin2018)Photo by Stephen Martin (@smartin2018)Photo by Stephen Martin (@smartin2018)Photo by Stephen Martin (@smartin2018)Photo by Stephen Martin (@smartin2018)Photo by Stephen Martin (@smartin2018)Photo by Stephen Martin (@smartin2018)Photo by Stephen Martin (@smartin2018)Photo by Stephen Martin (@smartin2018)
Ifixit is such a good company. I've now fixed two devices using ifixit tools, replacing parts from ifixit kits. Much $$$ saved. Easy guides and parts. They're well known in geek circles but if you're even remotely handy, and you break your hardware, you really should try a repair
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If the lower bound is L, and length is K, and V is an unconstrained simplex L + V*(1 - K*L) Gives a lower bounded simplex. Figured that out today when trying to implement a constraint in a differentiable way in torch.
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This is it, what I've trained for
A Mathematical Model of Quitting Academia Academia has problems, you might have heard. Many normative practices in the sciences benefit careers at the price of cumulative scientific knowledge. These problems could in principle be addressed through institutional reform. However many academics resist reform, and those who participate in reform behavior may be disadvantaged in competition for jobs and resources. Simultaneously, academics may find non-academic outside options more appealing, especially if they believe in reform. This is especially true for the most talented and skilled individuals, who have better outside options. When can reform spread within such a system, even though those who believe in it are passed over or are incentivized to leave? I construct and solve a dynamic model of this depressing scenario.

ALT A Mathematical Model of Quitting Academia Academia has problems, you might have heard. Many normative practices in the sciences benefit careers at the price of cumulative scientific knowledge. These problems could in principle be addressed through institutional reform. However many academics resist reform, and those who participate in reform behavior may be disadvantaged in competition for jobs and resources. Simultaneously, academics may find non-academic outside options more appealing, especially if they believe in reform. This is especially true for the most talented and skilled individuals, who have better outside options. When can reform spread within such a system, even though those who believe in it are passed over or are incentivized to leave? I construct and solve a dynamic model of this depressing scenario.

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I got @OpenWebUI working with Microsoft's taskweaver using the new open-webui pipelines tooling. Super cool.
Image from Stephen Martin (@smartin2018)
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I now am running an ollama powered discord bot, ellama for emacs, open-webui, and firefox page assist. Ollama really made making your own personal suite of llm tools so easy to use.
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Stephen Martin retweeted
Sean Pinkney (@thatpinkney) profile picture
Sean Pinkney@thatpinkney14 May 2024
New paper: Adding bounds or known values to Cholesky factors of correlation matrices. Code in @mcmc_stan. It's a short paper but allows some cool stuff 1/ arxiv.org/abs/2405.07286
A Short Note on a Flexible Cholesky Parameterization of...

A Short Note on a Flexible Cholesky Parameterization of...

We propose a Cholesky factor parameterization of correlation matrices that facilitates a priori restrictions on the correlation matrix. It is a smooth and differentiable transform that allows...

arxiv.org
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github.com/stephensrmmartin/… Linux-friendly configuration tool for the Akai LPD8 Mk2 midi controller. This was a fun 3-evening hackathon. All this, because of I wanted to configure my midi pads as foot pedals for my multi-effect raspberry pi project, and I don't like windows.
GitHub - stephensrmmartin/lpd8mk2: Linux driver for sending and receiving configuration from the...

GitHub - stephensrmmartin/lpd8mk2: Linux driver for sending and receiving configuration from the...

Linux driver for sending and receiving configuration from the Akai LPD8 Mkii (Mk2) device (and possibly other Akai devices). - stephensrmmartin/lpd8mk2

github.com
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Linux driver working. I feel amazing.
Image from Stephen Martin (@smartin2018)
Image from Stephen Martin (@smartin2018)
Image from Stephen Martin (@smartin2018)
Stephen Martin (@smartin2018) profile pictureStephen Martin@smartin20186 May 2024
Haven't done this since I had a Gameboy GameShark. Learning hex codes so I can write my own editor for the Akai LPD8 mk2.
Image from Stephen Martin (@smartin2018)
Image from Stephen Martin (@smartin2018)
Image from Stephen Martin (@smartin2018)
Image from Stephen Martin (@smartin2018)
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TIL: Python 3.10+ has pattern matching ala Haskell/Scala/{other functional languages}.
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Haven't done this since I had a Gameboy GameShark. Learning hex codes so I can write my own editor for the Akai LPD8 mk2.
Image from Stephen Martin (@smartin2018)
Image from Stephen Martin (@smartin2018)
Image from Stephen Martin (@smartin2018)
Image from Stephen Martin (@smartin2018)
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Using Wireshark to listen to Sysex midi signals sent by the official windows/osx editor, so I can implement it for Linux. Run experiments and see what hex code means what.
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There we go.
Image from Stephen Martin (@smartin2018)
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Not enough people sanity check their data, and it shows. It should be second nature for people who have scientific backgrounds, but it's not, and that puzzles me. How can you reason about it without being confident in the data's integrity and adherence to some assumed process?
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I've been called sir twice in two days. Shit.
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It'd be pretty cool if the admin would take all historical loan payments, and just cancel the interest altogether, retrospectively applying the payment toward the principle.
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Scala + Metals-lsp + Emacs = Awesome.
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Confluence's search sucks. So I dumped our space out, converted to markdown with pandoc, and got RAG working for them with ollama. Much better.
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I swear, the worst application of technology still in use today is automated phone directories. There is no quicker way to drain my patience and be annoyed at your entire company than dealing with 15 menus and answer 10 questions narrated by a bot who can't understand me.
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I just start yelling "agent" until it gives up and connects me to a person. But even today, it connected me to the wrong person (three times), and they had no central operator team to connect me to the correct person at the correct office.
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Ollama is awesome. Got it integrated into a web UI, phone app, a personal discord bot, and my editor. Even have it talking to me with stt and tts. Getting close to having it call functions and write itself code if it can't answer itself. Local LLMs are actually great tools.
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