Tootfinder

Stable Preference Optimization for LLMs: A Bilevel Approach Beyond Direct Preference Optimization
Chengtao Jian, Kai Yang, Ye Ouyang, Xiaozhou Ye
https://arxiv.org/abs/2507.07723 …

Stable Preference Optimization for LLMs: A Bilevel Approach Beyond Direct Preference Optimization
Direct Preference Optimization (DPO) has emerged as a popular and efficient alternative to reward modeling and reinforcement learning for aligning language models with human preferences. Despite its empirical success, the theoretical properties and intrinsic limitations of DPO remain underexplored. In this work, we first present a comprehensive analysis of DPO's dynamics from a probability evolution perspective. Our analysis reveals that DPO is highly sensitive to initialization. It also tends …

A Fragmentation-Aware Adaptive Bilevel Search Framework for Service Mapping in Computing Power Networks
Jingzhao Xie, Zhenglian Li, Gang Sun, Long Luo, Hongfang Yu, Dusit Niyato
https://arxiv.org/abs/2507.07535

A Fragmentation-Aware Adaptive Bilevel Search Framework for Service Mapping in Computing Power Networks
Computing Power Network (CPN) unifies wide-area computing resources through coordinated network control, while cloud-native abstractions enable flexible resource orchestration and on-demand service provisioning atop the elastic infrastructure CPN provides. However, current approaches fall short of fully integrating computing resources via network-enabled coordination as envisioned by CPN. In particular, optimally mapping services to an underlying infrastructure to maximize resource efficiency a…

Heute vor 27 Jahren: Am 11. Juni 1998 löste eine Fehlauslösung des Sprühsystems im #Kernkraftwerk #Belleville eine automatische #Reaktorabschaltung aus. Dabei klemmte ein Steuereleme…

This https://arxiv.org/abs/2401.17852 has been replaced.
link: https://scholar.google.com/scholar?q=a

Theoretical smoothing frameworks for nonsmooth simple bilevel problems
Bilevel programming has recently received a great deal of attention due to its abundant applications in many areas. The optimal value function approach provides a useful reformulation of the bilevel problem, but its utility is often limited due to the nonsmoothness of the value function even in cases when the associated lower-level function is smooth. In this paper, we present two smoothing strategies for the value function associated with lower-level functions that are not necessarily smooth b…

» Angesprochen sind in erster Linie Privatpersonen, die ihren privaten Parkplatz dem Personal von Pflegediensten zur Verfügung stellen, wenn sie ihn selbst nicht brauchen (zum Beispiel wenn sie gerade bei der Arbeit sind). 
Bringen Sie dafür einfach das Plakat gut sichtbar bei Ihrer privaten Parkfläche an und zeigen Sie den Pflegediensten, dass sie hier willkommen sind. «

Ein Parkplatz für die Pflege | Bielefeld

Deploying SICNav in the Field: Safe and Interactive Crowd Navigation using MPC and Bilevel Optimization
Sepehr Samavi, Garvish Bhutani, Florian Shkurti, Angela P. Schoellig
https://arxiv.org/abs/2506.08851

Deploying SICNav in the Field: Safe and Interactive Crowd Navigation using MPC and Bilevel Optimization
Safe and efficient navigation in crowded environments remains a critical challenge for robots that provide a variety of service tasks such as food delivery or autonomous wheelchair mobility. Classical robot crowd navigation methods decouple human motion prediction from robot motion planning, which neglects the closed-loop interactions between humans and robots. This lack of a model for human reactions to the robot plan (e.g. moving out of the way) can cause the robot to get stuck. Our proposed …

Die #LagederNation ist dieses Mal außerordentlich interessant.
#Dobrindt kriegt sein Fett weg, #Linartas im Interview, Polen, Energiewende - guckt selbst ins Inhaltsverzeichnis. 😉
…

LdN434 Bundesregierung ignoriert Gericht, Rechtsaußen neuer Präsident Polens (Kornelia Kończal, Uni Bielefeld), Wie Kommunen Akzeptanz von Windrädern steigern, Ungleichheit gefährdet Demokratie (Martyna Linartas, Autorin), Korrektur: Bundeswehr und Google-Cloud

Heute vor 34 Jahren: Am 10. Juli 1991 kam es im französischen #Kernkraftwerk #Belleville während einer Kaltabschaltung zu einer unbeabsichtigten Verdünnung des Primärfluids. 10m³ reines Wasser wurden in den Primärkreislauf eingeführt und darauf hin sofort mit Bor versetzt.

Replaced article(s) found for math.OC. https://arxiv.org/list/math.OC/new
[1/1]:
- Near-Optimal Algorithms for Convex Simple Bilevel Optimization under Weak Assumptions
Rujun Jiang, Xu Shi, Weizheng Song, Jiulin Wang

Replaced article(s) found for math.OC. https://arxiv.org/list/math.OC/new/
[1/1]:
A bilevel approach for compensation and routing decisions in last-mile delivery