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Algebraic and FFT-Based Methods for Discrete-Time Matrix Convolutions with Applications to Semi-Markov Models

arXiv:2605.30379v1 Announce Type: new Abstract: We study the convolution product of matrix-valued sequences and its role in the computation of Markov renewal equations. Explicit representations and recursive formulae for the convolutional inverse are derived and used to construct FFT-accelerated convolution and Newton-type inversion schemes, together with a Gauss--Jordan alternative in truncated power-series rings. The proposed framework is also applied to discrete approximations of matrix...

arXiv CS 9d ago

Algebraic and FFT-Based Methods for Discrete-Time Matrix Convolutions with Applications to Semi-Markov Models

arXiv:2605.30379v2 Announce Type: replace Abstract: We study the convolution product of matrix-valued sequences and its role in the computation of Markov renewal equations. Explicit representations and recursive formulae for the convolutional inverse are derived and used to construct FFT-accelerated convolution and Newton-type inversion schemes, together with a Gauss--Jordan alternative in truncated power-series rings. The proposed framework is also applied to discrete approximations of...

arXiv CS 8d ago

French Open agrees to talks with players in row over grand slam prize money

The French Tennis Federation (FFT) has agreed to engage in talks with leading agents regarding increased prize money, player welfare, and representation at the French Open. This commitment follows a media boycott by several top players, including Jannik Sinner and Aryna Sabalenka, who protested the current grand slam prize money. The FFT has pledged to present concrete proposals within the next month.

The Guardian UK 18d ago

Vallejo fined for sexist remarks about female referee at French Open

Vallejo fined for sexist remarks about female referee at French Open Paraguayan blames Brazilian referee Ana Carvalho for failing to control the home crowd during his second-round loss. Paraguayan player Adolfo Daniel Vallejo will be fined after he suggested women lack the courage to umpire rowdy crowds following his marathon five-hour defeat by a French teenager, the French Tennis Federation (FFT) said on Friday. Vallejo blamed Brazilian referee Ana Carvalho for failing to control the home...

Al Jazeera 11d ago

MOSAIC: A Workload-Driven Simulation and Design-Space Exploration Framework for Heterogeneous NPUs

arXiv:2606.05362v2 Announce Type: replace Abstract: AI model architectures are diversifying rapidly. Although dense matrix multiplication underlies today's CNNs and transformers, emerging architectures (state-space models, long convolutions via the fast Fourier transform (FFT), Kolmogorov-Arnold networks, and spiking networks) are not multiply-accumulate (MAC) dominated; they spend much of their computation on vector and non-MAC primitives that homogeneous, MAC-centric neural processing...

arXiv CS 1d ago

MOSAIC: A Workload-Driven Simulation and Design-Space Exploration Framework for Heterogeneous NPUs

Announce Type: new Abstract: AI model architectures are diversifying rapidly. Although dense matrix multiplication underlies today's CNNs and transformers, emerging architectures (state-space models, long convolutions via the fast Fourier transform (FFT), Kolmogorov-Arnold networks, and spiking networks) are not multiply-accumulate (MAC) dominated; they spend much of their computation on vector and non-MAC primitives that homogeneous, MAC-centric neural processing units (NPUs) serve poorly....

arXiv CS 5d ago

Frequency-Domain Latent Attention Gating for Cross-Domain Token Aggregation

arXiv:2606.08191v1 Announce Type: new Abstract: Token aggregation is a common bottleneck in models that map token representations to sample-level predictions, yet most pooling methods operate only in the original token domain. We propose FLaG, a plug-in aggregation module that transforms token representations with the real FFT, summarizes spectral components with learnable latent queries, applies a channel-wise gate, and reconstructs enhanced time-domain tokens for final pooling.

arXiv CS 1d ago

Resonant Method-based Fully Automated Core Loss Measurement System for Sub-MHz Magnetics With Switched Capacitor Sequence

Announce Type: new Abstract: Accurate loss characterization is essential for the design of high-frequency power magnetic components. State-of-the-art resonant characterization methods are attractive for high accuracy and low sensitivity, especially at the MHz regime. However, they predominantly rely on manual tuning and computationally intensive Fast Fourier Transform (FFT) analysis to identify resonant conditions, causing both inefficiencies and inaccuracies.

arXiv CS 9d ago

Efficient Numerical Modeling of Near-Field Diffraction in ORIS-Assisted Free-Space Optical Links

Announce Type: new Abstract: This paper investigates near-field propagation in optical reconfigurable intelligent surface (ORIS)-assisted free-space optical (FSO) communication systems. Unlike conventional far-field scenarios, near-field propagation involves complex diffraction effects that hinder tractable closed-form analysis. To address this issue, a numerical framework for evaluating the optical field distribution of ORIS-assisted FSO links is proposed.

arXiv CS 8d ago

Fair Finetuning Mitigates Distribution Inference Attacks

arXiv:2606.01719v1 Announce Type: new Abstract: Machine learning models trained on sensitive data can inadvertently leak population-level information about their training distributions -- a threat known as distribution inference attack (DIA). An adversary with black-box access can infer sensitive demographic properties, such as subgroup proportions, without observing any training data directly. While defenses such as differential privacy and property unlearning have been proposed, the link...

arXiv CS 8d ago