4 papers
ToolRec: Calibrated Preference Alignment for Query Recommendation in On-Device Assistants
Zihan Luo, Lingkui Chen, Ruike Zhang +5
Large Language Models (LLMs) have significantly advanced generative query recommendation. However, while alignment is crucial for tailoring LLMs to human preferences, existing alig…
Strengthening Bulow-Klemperer-Style Results for Multi-Unit Auctions
Moshe Babaioff, Yiding Feng, Zihan Luo
The classic result of Bulow and Klemperer (1996) shows that in multi-unit auctions with units and buyers whose values are sampled i.i.d. from a regular distribution,…
On the Fair Allocation to Asymmetric Agents with Binary XOS Valuations
Ziheng Chen, Bo Li, Zihan Luo +1
We study the problem of allocating indivisible goods among agents, where each agent's valuation is fractionally subadditive (XOS). With respect to AnyPrice Share (APS) fair…
Are Your Models Still Fair? Fairness Attacks on Graph Neural Networks via Node Injections
Zihan Luo, Hong Huang, Yongkang Zhou +3
Despite the remarkable capabilities demonstrated by Graph Neural Networks (GNNs) in graph-related tasks, recent research has revealed the fairness vulnerabilities in GNNs when faci…