Tootfinder

contiguous_usa: Contiguous states (USA)
A network of contiguous states in the USA, in which each state is a node and two nodes are connected if they share a land-based geographic border. The dataset includes the lower 48 states, and the District of Columbia.
This network has 49 nodes and 107 edges.
Tags: Transportation, Roads, Unweighted

Good Morning Canada
One half of our move is complete and in 4 days we move to our new home. We're in good company as almost 1/3 of Canadians move once every 5 years. And like us, some are downsizing to a smaller home in their retirement years.
#CanadaIsAwesome #Moving
https://www.statcan.gc.ca/o1/en/plus/7309-moving-canada-good-bad-and-ugly

Context Matters: Learning Generalizable Rewards via Calibrated Features
Alexandra Forsey-Smerek, Julie Shah, Andreea Bobu
https://arxiv.org/abs/2506.15012 …

Context Matters: Learning Generalizable Rewards via Calibrated Features
A key challenge in reward learning from human input is that desired agent behavior often changes based on context. Traditional methods typically treat each new context as a separate task with its own reward function. For example, if a previously ignored stove becomes too hot to be around, the robot must learn a new reward from scratch, even though the underlying preference for prioritizing safety over efficiency remains unchanged. We observe that context influences not the underlying preference…

"Capital has been here before with chintz—by which I mean real chintz, an artisanal craft from India. “Chintz” is originally a Hindi word, and if you’re like most people, you’ve probably got the term all wrong."
Informative, sweet, a great read. Re #aislop #ai

Fundamentals of the metal contact to p-type GaN: new multilayer design
Konrad Sakowski, Pawe{\l} Strak, Stanislaw Krukowski
https://arxiv.org/abs/2506.15163

Fundamentals of the metal contact to p-type GaN: new multilayer design
Electrical properties of contact to p-type nitride semiconductor devices, based on gallium nitride were simulated by ab initio and by drift-diffusion calculations. The contact electric properties are shown to be dominated by electron transfer form metal to GaN related to Fermi level difference both by ab initio and model calculation. The results indicate on high potential barrier for holes leading to nonohmic character of the contact. The electrical nature of the Ni-Au contact formed by anneali…

sp_high_school_new: High school dynamic contacts (2011-2012)
These datasets contain the temporal network of contacts between students in a high school in Marseilles, France. The first dataset gives the contacts of the students of three classes during 4 days in Dec. 2011, and the second corresponds to the contacts of the students of 5 classes during 7 days (from a Monday to the Tuesday of the following week) in Nov. 2012.
This network has 126 nodes and 28561 edges.
Tags: Soc…

TACT: Humanoid Whole-body Contact Manipulation through Deep Imitation Learning with Tactile Modality
Masaki Murooka, Takahiro Hoshi, Kensuke Fukumitsu, Shimpei Masuda, Marwan Hamze, Tomoya Sasaki, Mitsuharu Morisawa, Eiichi Yoshida
https://arxiv.org/abs/2506.15146

TACT: Humanoid Whole-body Contact Manipulation through Deep Imitation Learning with Tactile Modality
Manipulation with whole-body contact by humanoid robots offers distinct advantages, including enhanced stability and reduced load. On the other hand, we need to address challenges such as the increased computational cost of motion generation and the difficulty of measuring broad-area contact. We therefore have developed a humanoid control system that allows a humanoid robot equipped with tactile sensors on its upper body to learn a policy for whole-body manipulation through imitation learning b…

contiguous_usa: Contiguous states (USA)
A network of contiguous states in the USA, in which each state is a node and two nodes are connected if they share a land-based geographic border. The dataset includes the lower 48 states, and the District of Columbia.
This network has 49 nodes and 107 edges.
Tags: Transportation, Roads, Unweighted

Robust Instant Policy: Leveraging Student's t-Regression Model for Robust In-context Imitation Learning of Robot Manipulation
Hanbit Oh, Andrea M. Salcedo-V\'azquez, Ixchel G. Ramirez-Alpizar, Yukiyasu Domae
https://arxiv.org/abs/2506.15157

Robust Instant Policy: Leveraging Student's t-Regression Model for Robust In-context Imitation Learning of Robot Manipulation
Imitation learning (IL) aims to enable robots to perform tasks autonomously by observing a few human demonstrations. Recently, a variant of IL, called In-Context IL, utilized off-the-shelf large language models (LLMs) as instant policies that understand the context from a few given demonstrations to perform a new task, rather than explicitly updating network models with large-scale demonstrations. However, its reliability in the robotics domain is undermined by hallucination issues such as LLM-…

Hard Contacts with Soft Gradients: Refining Differentiable Simulators for Learning and Control
Anselm Paulus, A. Ren\'e Geist, Pierre Schumacher, V\'it Musil, Georg Martius
https://arxiv.org/abs/2506.14186

Hard Contacts with Soft Gradients: Refining Differentiable Simulators for Learning and Control
Contact forces pose a major challenge for gradient-based optimization of robot dynamics as they introduce jumps in the system's velocities. Penalty-based simulators, such as MuJoCo, simplify gradient computation by softening the contact forces. However, realistically simulating hard contacts requires very stiff contact settings, which leads to incorrect gradients when using automatic differentiation. On the other hand, using non-stiff settings strongly increases the sim-to-real gap. We analyze …