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Non-obvious Manipulability in the Additively Separable Group Activity Selection Problem
new Abstract: In this work, we study the additively separable Group Activity Selection Problem (AS-GASP) in an imperfect information setting, where agents have private preferences over activities and weights over other agents. Our goal is to design mechanisms that assign agents to activities based on their declared preferences and weights, with the objective of maximizing social welfare while ensuring truthful reporting. We, therefore, focus on the notion of non-obvious manipulability (NOM),...
Generalizing Fair Top-$k$ Selection: An Integrative Approach
arXiv:2603.04689v3 Announce Type: replace Abstract: Fair top-$k$ selection, which ensures appropriate proportional representation of members from minority or historically disadvantaged groups among the top-$k$ selected candidates, has drawn significant attention. We study the problem of finding a fair (linear) scoring function with multiple protected groups while also minimizing the disparity from a reference scoring function. This generalizes the prior setup, which was restricted to the...
On top of the world together: The Singaporean husband-wife duo who summited Everest
On top of the world together: The Singaporean husband-wife duo who summited Everest Only a few Singaporeans have summited Everest. Last month, Mr Mark Ng and Ms Ng Li Ying joined that select group. SINGAPORE: After reaching the summit of Mount Everest, Singaporean Ng Li Ying took a few moments to take it all in.
Kalshi is building a prediction markets 'Bloomberg Terminal' for high-end traders, source says
Prediction market platform Kalshi is developing a new interface for its highly engaged traders to track the company's prediction markets, according to a source familiar with the plans. The product, which the source compared to the "Bloomberg Terminal" for traditional equities and derivatives, is currently in alpha testing with a select group of traders on the platform and has been in development for about a month. Some of the features of the interface, which were shown to CNBC, include...
VAR review: UCL ref got the Mendes-Madueke call ri...
Video assistant referee causes controversy every week whether it be the Premier League, Champions League or FA Cup, but how are decisions made and are they correct? This season, we take a look at the major incidents to examine and explain the process both in terms of VAR protocol and the Laws of the Game. Andy Davies (@andydaviesref) is a former Select Group referee, with over 12 seasons on the elite list, working across the Premier League and Championship.
A Held-Out Transition-Pair Falsifier for Long-Horizon Non-Abelian State Tracking
Announce Type: new Abstract: State tracking exposes a sharp limitation of sequence models: the relevant signal is often not a summary of observed tokens, but an ordered latent state that evolves through non-commutative transformations. We introduce a held-out transition-pair falsifier for finite non-Abelian group tracking. The protocol forbids selected ordered generator pairs during training and requires the same local patterns during evaluation, blocking one direct local-transition...
A new strategy for assembling π-conjugated panels into square molecules revealed
A new strategy for assembling π-conjugated panels into square molecules revealed Gaby Clark Scientific Editor Alexander Pol Deputy Editor A research group has developed a new method for selectively synthesizing three-dimensional macrocycles,⁽¹⁾ in which four panels are arranged in a square, by connecting planar π-conjugated molecules⁽²⁾ at right angles. This method is applicable to a wide variety of π-conjugated molecules and allows the size of the internal cavity to be designed....
Constrained user-item allocation for e-commerce marketing campaigns
arXiv:2606.09623v1 Announce Type: new Abstract: When running marketing campaigns, retailers must decide which products to promote and which users to target. These decisions are inherently coupled: effective campaigns match users and items with strong mutual affinity into non-overlapping groups of predefined sizes. However, existing approaches assume predefined campaign structure or decouple item selection from user assignment, and cannot discover campaign groupings directly from joint...
Gene ancestries reveal diverse microbial associations during eukaryogenesis
Abstract The origin of eukaryotes remains a central enigma in biology1. Continuing debates agree on the pivotal role of a symbiosis between an alphaproteobacterium and an Asgard archaeon2,3. However, the nature, timing and contributions of other potential bacterial partners4,5,6 and the role of interactions with viruses7,8,9 remain contentious.
After 8,000 layoffs, Meta updates 7,000 employees on reshuffle
Meta recently laid off 8,000 employees to push for a broader AI-focused restructuring. Meanwhile, the company has reassigned around 7,000 workers to new AI teams as CEO Mark Zuckerberg seeks to strengthen Meta’s position in the AI sector. According to an internal memo reviewed by Business Insider (BI), thousands of employees were informed they had been selected to join a newly formed Applied AI (AAI) group or other AI-focused teams.