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Lee Spector

@leespector.bsky.social

Teaches and conducts research in AI, ALife, & intersections of computer science with cognitive science, evolutionary biology, physics, and the arts.

255 Followers  |  61 Following  |  25 Posts  |  Joined: 08.12.2023  |  1.8886

Latest posts by leespector.bsky.social on Bluesky

lexicase.ai

New, brief overview of lexicase selection: lexicase.ai

It considers individual training cases in different random orders, and therefore with different priorities, for each selection event.

#AI #MachineLearning #ALife

09.10.2025 03:24 β€” πŸ‘ 3    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
Visit the Botanic Garden of Smith College

@ladyslipperhere.bsky.social
If your ever in Western MA area this is worth checking out
I particularly enjoy the rainforest in the center in the middle of a New England winter
garden.smith.edu/visit

25.09.2025 11:28 β€” πŸ‘ 2    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0

The imaginatively named streets in Hadley, Massachusetts that cross the bike path on the way from Northampton to Amherst:

Cross Path Rd, West St, Middle St, East St, South Maple St

#westernmass

11.09.2025 00:33 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Much like "crab", industrial music is constantly re-evolving from first principles basically anywhere where there's a bunch of metal and plastic laying about

01.09.2025 00:14 β€” πŸ‘ 11156    πŸ” 3480    πŸ’¬ 236    πŸ“Œ 351
An Even Quicker Introduction to the Push Programming Language
YouTube video by Lee Spector An Even Quicker Introduction to the Push Programming Language

Super niche AI/GP technical content: I made this short video 6 years ago and was just delighted to discover that I still think it's okay! LMK if you have related ideas you'd like to discuss. www.youtube.com/watch?v=VGJW...

30.08.2025 00:50 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Kenichi Morita: Reversible world of cellular automata - Genetic Programming and Evolvable Machines Genetic Programming and Evolvable Machines -

New book review, freely available in GPEM:

β€œReversible world of cellular automata” by Kenichi Morita, reviewed by Tomas Rokicki

link.springer.com/article/10.1...

21.08.2025 21:15 β€” πŸ‘ 7    πŸ” 4    πŸ’¬ 0    πŸ“Œ 0

Indeed - we showed an AutoML could easily compete with a deep learning LSTM & significantly outperform it in efficiency academic.oup.com/bioinformati... #automl #deeplearning #machinelearning

17.08.2025 13:43 β€” πŸ‘ 14    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0
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We're excited to share "The Cost of Getting Around: The Transportation Burdens of Lower-income residents in Western Massachusetts", a collaboration between MPG and @wayfinders.bsky.social for @massdot.bsky.social. Here's Quick thread of some of the key findings. www.mass.gov/doc/the-peop...

13.08.2025 20:11 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 1    πŸ“Œ 2

In my first interaction with ChatGPT 5 it provided four "key references," every one of which was hallucinated or broken in one or more ways. This was about a machine learning techique for which there is a lot of information online, and it totally butchered it.

10.08.2025 03:37 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

the brain that can see a face in a wall outlet was always doomed to hear the voice of God in a markov chain

24.07.2025 02:05 β€” πŸ‘ 1267    πŸ” 384    πŸ’¬ 9    πŸ“Œ 5
Current issue: Patterns

Our tree-based pipeline optimization tool (TPOT) automated machine learning (AutoML) review paper is featured in this special issue of Cell's Patterns on open-source software www.cell.com/patterns/iss... #tpot #automl #mlsky #machinelearning

28.07.2025 14:31 β€” πŸ‘ 6    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
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Why AI chatbots lie to us A few weeks ago, a colleague of mine needed to collect and format some data from a website, and he asked the latest version of Anthropic’s generative AI system, Claude, for help. Claude cheerfully agr...

In my latest (and last!) column for Science’s Expert Voices series, I write about the reasons behind AI chatbots’ β€œdeceptive” behaviors (and why Claude threatened a fictional CEO with blackmail).

www.science.org/doi/10.1126/...

24.07.2025 18:24 β€” πŸ‘ 199    πŸ” 80    πŸ’¬ 9    πŸ“Œ 18
In Memoriam: Margaret Boden (1936-2025) Professor Boden, who spent most of her academic career at the University of Sussex, was a leading figure in cognitive science, who wrote extensively on computational models of the mind, on artificial ...

Brutal to learn that Margaret Boden has passed. An absolute powerhouse in the areas of AI and creativity.
leiterreports.typepad.com/blog/2025/07...

24.07.2025 23:07 β€” πŸ‘ 17    πŸ” 8    πŸ’¬ 0    πŸ“Œ 0

No.

16.07.2025 13:56 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Call for Papers: Special Issue on Generative AI and Evolutionary Computation for Software Engineering Special Issue Home: https://link.springer.com/collections/bcadcgjdjd Generative models, and mainly large language models, are already wide...

GPEM Journal has a new CFP for a special issue in Generative AI and Evolutionary Computation for Software Engineering!

This will be edited by Dominik Sobania

See Leo's blogpost:
gpemjournal.blogspot.com/2025/06/call...

And special issue page:
link.springer.com/collections/...

03.07.2025 14:28 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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πŸ“Ί Introducing the Fediverse: a New Era of Social Media A 4 minute video that aims to introduce the Fediverse to people not familiar with it

news.elenarossini.com/fediverse-vi...

12.06.2025 12:45 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
GPTP

Excited to be at: Genetic Programming Theory & Practice (GPTP) is a small, invitation-only workshop. This year’s GPTP will be hosted by Michigan State University in East Lansing, MI on June 05-07, 2025 gptp-workshop.com/index.html #artificialintelligence #geneticprogramming

05.06.2025 13:21 β€” πŸ‘ 6    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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I am thrilled to present an expert panel conversation I organized in… | Lucy Brock I am thrilled to present an expert panel conversation I organized in conjunction with the Systems Engineering Department at la Universidad Cooperativa de Colombia. As a proponent of international educ...

This was a great conversation and I'm looking forward to the Q&A session! www.linkedin.com/feed/update/...

30.04.2025 02:51 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Five alarm fire: The State Department has effectively ended free speech for student visa holders.

28.03.2025 22:27 β€” πŸ‘ 94    πŸ” 30    πŸ’¬ 8    πŸ“Œ 1
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Turing Award winners warn over unsafe deployment of AI models Two pioneers of reinforcement learning have won the $1mn prize from the Association for Computing Machinery

Congratulations to Rich Sutton and Andrew Barto on receiving the Turing Award in recognition of their significant contributions to ML. I also stand with them: Releasing models to the public without the right technical and societal safeguards is irresponsible.
www.ft.com/content/d8f8...

05.03.2025 13:43 β€” πŸ‘ 119    πŸ” 24    πŸ’¬ 0    πŸ“Œ 6
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Assn for Computing Machinery (@ACM@mastodon.acm.org) Attached: 1 image Meet the recipients of the 2024 ACM A.M. Turing Award, Andrew Barto and Richard Sutton! They are recognized for developing the conceptual and algorithmic foundations of reinforcemen...

It's not exactly what he just won the Turing award for, but some of the best conversations I've ever had about the nature of minds, brains and machines have been with Andy Barto. Congratulations Andy!!
mastodon.acm.org/@ACM/1141102...

05.03.2025 14:47 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I enjoyed Lisp flavors back in the day, and now live a short walk from wonderful Herrell's ice cream in Northampton MA.

03.03.2025 02:52 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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The mix-in revolution How an ice cream innovator in Somerville influenced Lisp pioneers at the MIT AI LabΒ­β€”and made a lasting mark on programming.

Via a friend, from MIT’s alumni magazine. On the confluence of Lisp-based Object Oriented Programming systems and gourmet ice cream in Cambridge, MA in the 1970s. I joined Symbolics in 1982 working with Dan Weinreb and Howard Cannon, writing a lot of Lisp code with Flavors.

#lisp #oops #symbolics

03.03.2025 01:28 β€” πŸ‘ 15    πŸ” 4    πŸ’¬ 2    πŸ“Œ 0
We're not done yet | 18F

18F was doing exactly the type of work that DOGE claims to want – yet we were eliminated shortly after midnight. Read our letter to the American people:
18f.org

01.03.2025 23:38 β€” πŸ‘ 18854    πŸ” 6851    πŸ’¬ 698    πŸ“Œ 446
Silencing Science Tracker | Sabin Center for Climate Change Law

The Silencing Science Tracker is a joint initiative of the Sabin Center for Climate Change Law & the Climate Science Legal Defense Fund. It tracks government attempts to restrict or prohibit research, education or discussion climate.law.columbia.edu/Silencing-Sc... #science #research

19.02.2025 15:32 β€” πŸ‘ 17    πŸ” 9    πŸ’¬ 0    πŸ“Œ 0
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Is the evolution metaphor still necessary or even useful for genetic programming? - Genetic Programming and Evolvable Machines Genetic Programming and Evolvable Machines -

Is the evolution metaphor still necessary or even useful for genetic programming? link.springer.com/article/10.1... #geneticprogramming #machinelearning #artificialintelligence #datascience

19.02.2025 17:08 β€” πŸ‘ 5    πŸ” 4    πŸ’¬ 0    πŸ“Œ 0
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Lee Spector (@lspector@pixelfed.social) Attached: 2 images

pixelfed.social/p/lspector/7...

31.01.2025 01:15 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Output: Once was a time when life simple life simple was. Was beautiful. Unpredictable. Unforgettable. Beautiful. Unpredictable. Dream.

22.12.2024 21:35 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

HELENA: Doctor, has Radius a soul?
DR. GALL: He's got something nasty.
- R.U.R. (Rossum's Universal Robots), by Karel Čapek

19.12.2024 03:52 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Particularity We describe a design principle for adaptive systems under which adaptation is driven by particular challenges that the environment poses, as opposed to average or otherwise aggregated measures of...

It's worth considering how this applies in many domains, ranging from grading to evolution. And for others working in #AI, how it relates to lexicase selection and "particularity" more generally: arxiv.org/abs/2306.06812

11.09.2024 18:39 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

@leespector is following 20 prominent accounts