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Dr. Angelica Lim @petitegeek.bsky.social Profile
Dr. Angelica Lim @petitegeek.bsky.social

@petitegeek

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Computer science prof and robot geek @SFU_CompSci 🇨🇦🇵🇭 AI, Robotics, Emotions. Prev: SoftBank Robotics, Kyoto U. she/her. TEDx talks https://t.co/C03HJMs4sB

Vancouver, Canada
Joined December 2008
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@SFU_CompSci
SFU School of Computing Science
29 days
The School of Computing Science at Simon Fraser University (SFU) is pleased to announce the expansion of the Rajan Recruitment Award. Women candidates who are applying for the Tenure-Track positions may be eligible for the Rajan Recruitment Award for Women in Computing Science,
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@SFU_CompSci
SFU School of Computing Science
1 month
We’re hiring! The School of Computing Science is receiving applications for two tenure-track faculty positions at the rank of Assistant or Associate Professor and one full-time Lecturer position. Apply by December 15 here: https://t.co/W3bxjinL49
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@petitegeek
Dr. Angelica Lim @petitegeek.bsky.social
3 months
Doing final checks on my Intro to Programming book and I'm really psyched about it. It takes an approach to learning programming that reflects my journey in learning French and Japanese. If you can learn a second language, you can learn Python!
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amazon.com
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@petitegeek
Dr. Angelica Lim @petitegeek.bsky.social
5 months
@mpshanahan This test has been stewing since I wrote this 8 years ago... A lot has changed since then, but some parts still remain valid https://t.co/HqM1hb2Igo
technologyreview.com
As robots get good at mimicking human behavior, people can be deceived into thinking they have human intelligence. So let’s put them to the test.
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@petitegeek
Dr. Angelica Lim @petitegeek.bsky.social
5 months
We tested a robot form, human-like character, animals, and objects. People change how they interact depending on looks. RTT Test https://t.co/e7gLggIvBj Full set of human behaviors https://t.co/EjDqHJDNrq We are inspired by @mpshanahan's essays and others. Feedback welcome!
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ieeexplore.ieee.org
How do people use their faces and bodies to test the interactive abilities of a robot? Making lively, believable agents is often seen as a goal for robots and virtual agents but believability can...
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@mcarmystrong
M. C. Armstrong
14 hours
MURDER MOST FOUL: Covert Action, Mockingbird Media, and JFK By M.C. Armstrong If we want the truth about the JFK assassination, we have to fight for it. And we need allies. As @TheOliverStone and @jimmydie1963 recently learned, @ABC is not an ally of the truth. Has one
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@petitegeek
Dr. Angelica Lim @petitegeek.bsky.social
5 months
...such as kicking (pain), and other affective stimuli 4. The robot's responses to higher level emblems, eg. waving or heart gestures 5. The robot's responses to pointing to things in context, like clothing 6. The robot's responses to roleplay, especially based on its looks
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@petitegeek
Dr. Angelica Lim @petitegeek.bsky.social
5 months
In our preliminary experiments, people tested: 1. The robot's sensing abilities, such as whether it could track them visually or respond to poking 2. The robot's motor abilities, or whether they could copy their movements 3. The robot's responses to smiling, aggression,...
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@petitegeek
Dr. Angelica Lim @petitegeek.bsky.social
5 months
You have one minute to interact with a robot through movement only. At the end, you need to say whether it's tele-operated or not. That's the React to This (RTT) Test - one of the robot Turing tests presented at https://t.co/ze2BnPp1oq Here's how initial tests went down 👇
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activeself.de
Organizers Call for Papers Program Speakers Half-day workshop as part of the IEEE International Conference on Robot & Human Interactive Communication (RO-MAN 2025) August 29th, 2025 / Eindhoven…
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@micahgallen
Micah G. Allen
5 months
🧠 New paper on breathing and the brain, out now @PLOSCompBiol! 🫁 "The respiratory cycle modulates distinct dynamics of affective and perceptual decision-making" https://t.co/2pJhrIPE41 We show how respiratory 'tidal computations' alter our decisons!
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journals.plos.org
Author summary Breathing is more than just a vital process for survival — it influences how we perceive and interact with the world around us. Recent research suggests that the rhythm of breathing,...
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@GameMillEnt
GameMill Entertainment
5 days
Save $20 on Nicktoons & The Dice of Destiny! Adventure into Holiday Savings. 🕹️ Now on PS5, Xbox, Switch, Switch 2, & PC
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@petitegeek
Dr. Angelica Lim @petitegeek.bsky.social
6 months
7/ One of the canonical textbooks is this one, the Kandel. It has beautiful figures and is a good reference. There is so much to learn! Thanks to my SFU neuro colleagues for giving me some initial pointers - I'll be taking courses this Fall. Always open to more resources! /Fin
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@petitegeek
Dr. Angelica Lim @petitegeek.bsky.social
6 months
6/ Underneath the grey matter, we have white matter that is made up mostly of axons that connect more distant brain areas. It's white from the myelination of the axons, a process involved in long-term learning https://t.co/1IK4Bn99SQ
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@petitegeek
Dr. Angelica Lim @petitegeek.bsky.social
6 months
5/ Brodmann visually segmented the cortex based on patterns of neurons in these layers. It turns out that the areas he visually segmented differed functionally as well, resulting in the Brodmann areas. https://t.co/GIZg873jtX
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@petitegeek
Dr. Angelica Lim @petitegeek.bsky.social
6 months
4/ Grey matter in the cortex (primarily in the outer surface of the brain) is composed mostly of neurons and local connections. The cortex has 6 layers. Layer 4 is mainly connections to the thalamus which receives much of the body's sensory input.
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@theothecanuck
Theo Daley
3 days
Cup Noodle painterly study using YMA Painterly, @maxonredshift and @escapemotions
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@petitegeek
Dr. Angelica Lim @petitegeek.bsky.social
6 months
3/ ANNs model excitatory neurons. But there also exist inhibitory neurons! These reduce the likelihood of firing. We don't model inhibitory neurons in typical artificial NNs. Glutamate is the neurotransmitter involved in excitatory processes, and GABA for inhibitory ones.
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@petitegeek
Dr. Angelica Lim @petitegeek.bsky.social
6 months
2/ The human brain is not a purely feed-forward network like an ANN. It's a dynamical system with feedback loops. For instance, a seizure involves a cycle of uncontrolled activation, which afaik can't happen in your typical ANN
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@petitegeek
Dr. Angelica Lim @petitegeek.bsky.social
6 months
1/ In humans, the timing of input into a neuron matters. If you have two action potentials entering a soma, arriving at the same time could cause it to fire. BUT the same inputs with some delay between each other might not. In a typical artificial NN, timing doesn't matter.
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@petitegeek
Dr. Angelica Lim @petitegeek.bsky.social
6 months
What are some basic things a computer scientist should know about the brain? I teach an Intro to AI course, and my slides include one diagram of a biological neuron that inspired the perceptron. But that's it! I'm just learning some of the things we don't teach 🤯 A thread 🧵
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@BernardJBaars
Bernard J. Baars, PhD
8 months
Emotions are not irrational intrusions; they are evolved signals that guide decision-making under uncertainty. Consciousness gives us the ability to reflect on them, modulate them, and sometimes override them.
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@WiMLworkshop
WiML
1 year
Come and join us listen to @petitegeek’s talk on Multimodal Learning for Interactive Embodied AI! Very cool demos!
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@BIGPLAY
BIGPLAY
2 days
Pittsburgh! Charlie Batch has an easy read for you! Smart Choice Baths is giving away a FREE bathroom remodel. No pressure. Just click and enter 👇
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@WiMLworkshop
WiML
1 year
Don’t miss @petitegeek, assistant professor at @SFU_CompSci, sharing their perspective at the panel discussion #WiML at #NeurIPS!
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