Tootfinder

Sources: Paramount is expected to acquire The Free Press in two weeks for ~$150M in cash and stock; Bari Weiss would take a CBS News editorial leadership role (Dylan Byers/Puck)
https://puck.news/bari-weiss-nears-150-million-deal-with-ellison/

UserRL: Training Interactive User-Centric Agent via Reinforcement Learning
Cheng Qian, Zuxin Liu, Akshara Prabhakar, Jielin Qiu, Zhiwei Liu, Haolin Chen, Shirley Kokane, Heng Ji, Weiran Yao, Shelby Heinecke, Silvio Savarese, Caiming Xiong, Huan Wang
https://arxiv.org/abs/2509.19736

UserRL: Training Interactive User-Centric Agent via Reinforcement Learning
Reinforcement learning (RL) has shown promise in training agentic models that move beyond static benchmarks to engage in dynamic, multi-turn interactions. Yet, the ultimate value of such agents lies in their ability to assist users, a setting where diversity and dynamics of user interaction pose challenges. In this work, we propose UserRL, a unified framework for training and evaluating user-centric abilities through standardized gym environments paired with simulated users. We systematically v…

Uniaxial negative thermal expansion in a weak-itinerant-ferromagnetic phase of CoZr$_{2}$H$_{3.49}$
Yuto Watanabe, Kota Suzuki, Takayoshi Katase, Akira Miura, Aichi Yamashita, Yoshikazu Mizuguchi
https://arxiv.org/abs/2509.20765

Uniaxial negative thermal expansion in a weak-itinerant-ferromagnetic phase of CoZr$_{2}$H$_{3.49}$
We discovered unique uniaxial negative thermal expansion (NTE) behavior for a weak-itinerant-ferromagnetic phase of CoZr$_{2}$H$_{3.49}$. CoZr$_{2}$ is known as a superconductor exhibiting uniaxial NTE along the $c$-axis, which is called anomalous thermal expansion (ATE). Additionally, CoZr$_{2}$ is also known as a well-absorbent of hydrogen, and hydrogen insertion raises weak-itinerant ferromagnetism instead of superconductivity. However, the influence of hydrogen insertion on ATE behavior in …

First Data of the 3000 km$^2$ Radio Detector at the Pierre Auger Observatory
Bjarni Pont (for the Pierre Auger Collaboration)
https://arxiv.org/abs/2509.19984 https://

First Data of the 3000 km$^2$ Radio Detector at the Pierre Auger Observatory
In this contribution, we present the status and first data from the Radio Detector (RD) at the Pierre Auger Observatory, consisting of $1660$ radio antennas deployed across the $3000$ km$^2$ surface detector array. These antennas measure the radio emission from extensive air showers in the $30-80$ MHz band, enabling electromagnetic energy measurements for air showers with zenith angles above $65°$. Combined with the muonic measurements from the water-Cherenkov detectors (WCDs), this allows mas…

Donald Trump on Saturday heaped pressure on Ukrainian President Volodymyr Zelensky,
saying he can either agree to the White House’s peace proposal by Thursday,
or “continue to fight his little heart out.”

The comment, made to reporters in Washington, is part of a White House push to get Ukraine’s leaders to agree to a 28-point plan to end the war that began with Russia’s invasion in February 2022.
It has drawn criticism, including from Republican lawmakers,
for…

Trump says Zelensky can agree to peace plan or ‘fight his little heart out’
President Trump on Saturday heaped pressure on Volodymyr Zelensky, as he pushed Ukraine’s leaders to agree to a 28-point plan to help bring an end to the war.

Trocando uma tomada aqui agora. Apesar de quase ter me formado técnico em eletrônica, eu odeio ter que fazer qualquer coisa desse tipo. Não tenho o menor jeito pra isso.

AJAHR: Amputated Joint Aware 3D Human Mesh Recovery
Hyunjin Cho, Giyun Choi, Jongwon Choi
https://arxiv.org/abs/2509.19939 https://arxiv.org/pdf/2509.19939…

AJAHR: Amputated Joint Aware 3D Human Mesh Recovery
Existing human mesh recovery methods assume a standard human body structure, overlooking diverse anatomical conditions such as limb loss. This assumption introduces bias when applied to individuals with amputations - a limitation further exacerbated by the scarcity of suitable datasets. To address this gap, we propose Amputated Joint Aware 3D Human Mesh Recovery (AJAHR), which is an adaptive pose estimation framework that improves mesh reconstruction for individuals with limb loss. Our model in…

A Set of Generalized Components to Achieve Effective Poison-only Clean-label Backdoor Attacks with Collaborative Sample Selection and Triggers
Zhixiao Wu, Yao Lu, Jie Wen, Hao Sun, Qi Zhou, Guangming Lu
https://arxiv.org/abs/2509.19947

A Set of Generalized Components to Achieve Effective Poison-only Clean-label Backdoor Attacks with Collaborative Sample Selection and Triggers
Poison-only Clean-label Backdoor Attacks aim to covertly inject attacker-desired behavior into DNNs by merely poisoning the dataset without changing the labels. To effectively implant a backdoor, multiple \textbf{triggers} are proposed for various attack requirements of Attack Success Rate (ASR) and stealthiness. Additionally, sample selection enhances clean-label backdoor attacks' ASR by meticulously selecting ``hard'' samples instead of random samples to poison. Current methods 1) usually han…

UserRL: Training Interactive User-Centric Agent via Reinforcement Learning
Cheng Qian, Zuxin Liu, Akshara Prabhakar, Jielin Qiu, Zhiwei Liu, Haolin Chen, Shirley Kokane, Heng Ji, Weiran Yao, Shelby Heinecke, Silvio Savarese, Caiming Xiong, Huan Wang
https://arxiv.org/abs/2509.19736

UserRL: Training Interactive User-Centric Agent via Reinforcement Learning
Reinforcement learning (RL) has shown promise in training agentic models that move beyond static benchmarks to engage in dynamic, multi-turn interactions. Yet, the ultimate value of such agents lies in their ability to assist users, a setting where diversity and dynamics of user interaction pose challenges. In this work, we propose UserRL, a unified framework for training and evaluating user-centric abilities through standardized gym environments paired with simulated users. We systematically v…

FINANCIAL TIMES
The US and Ukraine have drafted a new 19-point peace deal,
but left the most politically sensitive elements to be decided by the countries' presidents,
according to Ukrainian first deputy foreign minister Sergiy Kyslytsya.
Washington had previously put Kyiv under pressure to agree a 28-point proposal that had been developed by US and Russian officials and crossed several long-standing Ukrainian red lines.
Kyslytsya, who was in the room as par…

US and Ukraine draft new 19-point peace plan but defer biggest decisions
The most politically sensitive elements are left for Trump and Zelenskyy to discuss