Tootfinder

Man, I had a shit week.
Tried to stretch outside my comfort zone in a big way; but failed myself really badly.
Old trauma woke up at a crucial moment, and bit me really hard; and I think the whole thing, instead of being healing, just … doubled everything down.
I’m feeling worthless in a whole new way.
Feeling like I undid, in like one hour, years and years of self-confidence building.

Soeben eine Absage einer booking.com -Unterkunft erhalten, wegen des medizinischen Assistenzhunds 🐕‍🦺 meiner Frau, und weil angeblich Booking.com die Beschränkung "mindestens 4 Nächte" nicht übernommen hätte.
Habe die Buchung storniert (zum Glück kostenfrei weil genügend früh), aber die Gastgeber auf das Behindertengleichstellungsgesetz hingewiesen.

LLM-Driven Dual-Level Multi-Interest Modeling for Recommendation
Ziyan Wang, Yingpeng Du, Zhu Sun, Jieyi Bi, Haoyan Chua, Tianjun Wei, Jie Zhang
https://arxiv.org/abs/2507.10917

LLM-Driven Dual-Level Multi-Interest Modeling for Recommendation
Recently, much effort has been devoted to modeling users' multi-interests based on their behaviors or auxiliary signals. However, existing methods often rely on heuristic assumptions, e.g., co-occurring items indicate the same interest of users, failing to capture user multi-interests aligning with real-world scenarios. While large language models (LLMs) show significant potential for multi-interest analysis due to their extensive knowledge and powerful reasoning capabilities, two key challenge…

Vision-driven River Following of UAV via Safe Reinforcement Learning using Semantic Dynamics Model
Zihan Wang, Nina Mahmoudian
https://arxiv.org/abs/2508.09971 https://

Vision-driven River Following of UAV via Safe Reinforcement Learning using Semantic Dynamics Model
Vision-driven autonomous river following by Unmanned Aerial Vehicles is critical for applications such as rescue, surveillance, and environmental monitoring, particularly in dense riverine environments where GPS signals are unreliable. We formalize river following as a coverage control problem in which the reward function is submodular, yielding diminishing returns as more unique river segments are visited, thereby framing the task as a Submodular Markov Decision Process. First, we introduce Ma…

Improved sampling algorithms and Poincar\'e inequalities for non-log-concave distributions
Yuchen He, Zhehan Lei, Jianan Shao, Chihao Zhang
https://arxiv.org/abs/2507.11236

Improved sampling algorithms and Poincaré inequalities for non-log-concave distributions
We study the problem of sampling from a distribution $μ$ with density $\propto e^{-V}$ for some potential function $V:\mathbb R^d\to \mathbb R$ with query access to $V$ and $\nabla V$. We start with the following standard assumptions: (1) The potential function $V$ is $L$-smooth. (2) The second moment $\mathbf{E}_{X\sim μ}[\|X\|^2]\leq M$. Recently, He and Zhang (COLT'25) showed that the query complexity of sampling from such distributions is at least $\left(\frac{LM}{dε}\rig…

Staatstrojaner-Urteil: Die IT-Sicherheit bleibt die offene Flanke
Was bedeutet die Entscheidung des Bundesverfassungsgerichts zum Abhören von WhatsApp & Co. in der Praxis? Experten kommen zu unterschiedlichen Einschätzungen.

An eco-friendly universal strategy via ribavirin to achieve highly efficient and stable perovskite solar cells
Xianhu Wu, Gaojie Xia, Guanglei Cui, Jieyu Bi, Nian Liu, Jiaxin Jiang, Jilong Sun, Luyang Liu, Ping Li, Ning Lu, Zewen Zuo, Min Gu
https://arxiv.org/abs/2507.10557

An eco-friendly universal strategy via ribavirin to achieve highly efficient and stable perovskite solar cells
The grain boundaries of perovskite films prepared by the solution method are highly disordered, with a large number of defects existing at the grain boundaries. These defect sites promote the decomposition of perovskite. Here, we use ribavirin obtained through bacillus subtilis fermentation to regulate the crystal growth of perovskite, inducing changes in the work function and energy level structure of perovskite, which significantly reduces the defect density. Based on density functional theor…

Diverse high-Chern-number quantum anomalous Hall insulators in twisted rhombohedral graphene
Naitian Liu, Zhangyuan Chen, Jing Ding, Wenqiang Zhou, Hanxiao Xiang, Xinjie Fang, Linfeng Wu, Xiaowan Zhan, Le Zhang, Qianmei Chen, Kenji Watanabe, Takashi Taniguchi, Na Xin, Shuigang Xu
https://arxiv.org/abs/2507.11347

Diverse high-Chern-number quantum anomalous Hall insulators in twisted rhombohedral graphene
Quantum anomalous Hall (QAH) insulators with high Chern number (C) enables multiple dissipationless edge channels for low-power-consumption electronics. We report the realization of multiple high-C QAH insulators including C=3,5,6, and 7 in twisted monolayer-rhombohedral pentalayer graphene. In twist angles of approximately 1.40°, we observe QAH effect with C=5 at a filling of one electron per moiré unit cell, persisting up to 2 Kelvin. Furthermore, incommensurate QAH insulators with C=5,6, a…

Das #Rezept des Tages:
Mein #Flammkuchenrezept habe ich von Freunden aus Hessen. 🍕🔥 Mit einem selbstgemachten Teig, bestrichen mit Crème fraîche und bestreut mit #Schinkenspeck, rot…

Flammkuchen mit Federweißer – herbstlich, knusprig, lecker
Du liebst Federweißer? Dann passt dieser knusprige Flammkuchen perfekt dazu – mit Crème fraîche, Gemüse und optional Schinken!

Extrinsic Dopants as Growth Modifiers in Cu-Cr-O delafossites: A Study of Incorporation Limits and Film Properties
Marco Moreira, Yves Fleming, Patrick Grysan, Christele Vergne, Adrian Marie Philippe, Petru Lunca-Popa
https://arxiv.org/abs/2506.13540

Extrinsic Dopants as Growth Modifiers in Cu-Cr-O delafossites: A Study of Incorporation Limits and Film Properties
Cu-Cr-O delafossite thin films were grown by metal-organic chemical vapor deposition with various extrinsic dopants (Al, Mg, Mn, Sc, Y, and Zn) targeted at 5 at % to investigate how such doping influences their structure and properties. X-ray photoelectron spectroscopy revealed that the actual dopant incorporation is well below the nominal 5 %, with only Al and Sc present above detection. An off-stoichiometric Cu-Cr-O composition is determined, with no secondary phases detected. Transmission el…