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Extreme Points of the $(0,\delta)$-LDP Polytope with Small Input Size and Arbitrary Output Sizes
Announce Type: new Abstract: The structure of locally differentially private (LDP) mechanisms can be understood through the geometry of the corresponding privacy polytope. While the extreme points of the \( (\epsilon,0)\)-LDP polytope are well characterized (Kairouz \emph{et al.}, 2014; Holohan \emph{et al.}, 2017; Pensia \emph{et al.}, 2017), comparatively little is known for the \((\epsilon,\delta)\)-LDP polytope with \(\delta>0\). Recent work (Elangovan and Jog, 2024) has shown that even...
Japanese IT head says he made AI videos to smear Takaichi’s rivals during party poll
Advertisement Japanese IT head says he made AI videos to smear Takaichi’s rivals during party poll The Sanae Token developer says he used generative AI to create 1,000 to 1,500 short videos criticising contenders Koizumi and Hayashi 2-MIN READ2-MIN Listen The head of a Japanese IT firm has said that he created videos criticising rivals of Prime Minister Sanae Takaichi in last year’s ruling Liberal Democratic Party (LDP) presidential race, after being asked by one of her aides to help her win...
Optimal quantum locally differentially private mechanisms in the high-privacy regime
arXiv:2605.27278v2 Announce Type: replace-cross Abstract: We optimize the trade-off between privacy and utility in the high-privacy regime. We adopt local differential privacy (LDP) and its quantum extension, quantum local differential privacy (QLDP), for privacy protection, and investigate utility functions including the Holevo information (which reduces to the mutual information in the classical case) and the error exponents in symmetric and asymmetric hypothesis testing. These utility...
Scalable and Private Federated Learning Using Distributed Differential Privacy and Secure Aggregation
arXiv:2604.07125v2 Announce Type: replace Abstract: This article presents DDP-SA, a scalable privacy-preserving federated learning framework that jointly leverages client-side local differential privacy (LDP) and full-threshold additive secret sharing (ASS) for secure aggregation. Unlike existing methods that rely solely on differential privacy or on secure multi-party computation (MPC), DDP-SA integrates both techniques to deliver stronger end-to-end privacy guarantees while remaining...
Latent Diffusion Policy: Shaping Latent Spaces for Diffusion-Based Robotic Manipulation
Announce Type: new Abstract: Diffusion-based visuomotor policies operating directly in raw action spaces conflate scene comprehension with trajectory generation within a single denoising process. The resulting velocity field must simultaneously encode scene information and generate precise trajectories, increasing learning complexity and limiting performance on tasks demanding precise temporal coordination across multiple arms. To simplify this joint learning problem, we introduce Latent...
As Japan's popularity booms, a new survey shows strong anti‑foreigner sentiment
As Japan's popularity booms, a new survey shows strong anti‑foreigner sentiment Lisa Lock Scientific Editor Andrew Zinin Lead Editor Japan is experiencing historically high numbers of foreigners. Its population is shrinking, and its workforce is aging, driving foreign labor to historic levels. In addition, the number of international tourists has also reached record highs, reshaping everyday life across the country.
Japan must promote yen stablecoins in Asia, ruling party panel says
Japan must promote yen stablecoins in Asia, ruling party panel says TOKYO, June 1 : Japan must promote usage of yen-based stablecoins for settlement in Asia and create a legal framework to allow trading of crypto exchange-traded funds (ETF), a ruling party panel said in a proposal to the government on Monday. "Crypto-ETFs would provide investors with easy-to-understand ways of investment," the proposal said, calling on the government to position the product as an official means of investment...
Why sentiment in Japan has turned against foreigners despite a worker shortage
Anti-immigration sentiment rises in Japan despite growing demand for foreign workers Mon 8 Jun 2026 at 4:47am When Nikki Maruschak arrived in Japan in 2019 she saw it as a place where she could build a life. Today she finds herself feeling unwelcome. Walking to the train station, home, or just to the grocery store she has experienced an increase in "butsukari", where someone will intentionally bump into, or push, a person in a public space while walking.