Tootfinder

The Difference between the Left and Right Invariant Extended Kalman Filter
Yixiao Ge, Giulio Delama, Martin Scheiber, Alessandro Fornasier, Pieter van Goor, Stephan Weiss, Robert Mahony
https://arxiv.org/abs/2507.04568

The Difference between the Left and Right Invariant Extended Kalman Filter
The extended Kalman filter (EKF) has been the industry standard for state estimation problems over the past sixty years. The Invariant Extended Kalman Filter (IEKF) is a recent development of the EKF for the class of group-affine systems on Lie groups that has shown superior performance for inertial navigation problems. The IEKF comes in two versions, left- and right- handed respectively, and there is a perception in the robotics community that these filters are different and one should choose …

Bij het ombouwen van het huis naar een fossielvrij huis hebben we ook een balansventilatiesysteem laten inbouwen, al is het huis daar niet echt op ontworpen. Het is daardoor niet perfect, maar het werkt. Een voordeel is dat het vuil uit de ingeblazen lucht wordt gefilterd en doordat je dat filter elke zes maanden vervangt zie je goed hoeveel je niet inademt. 1/2

Tisch- und Bettwäschegeschichten aus dem Zentrum Wiens.
https://www.falter.at/morgen/20250709/hohe-mieten-warum-die-schwaebische-jungfrau-am-graben-umzieht

Hohe Mieten: Warum die Schwäbische Jungfrau am Graben umzieht
Die hohen Mieten am Graben verdrängen immer mehr alteingesessene Geschäfte. Eines davon ist die Schwäbische Jungfrau >>…

my phone has a “memes” folder
for years, that folder has had exactly one image
this is that one image.

Higher-Order Harmonics Reduction in Reset-Based Control Systems: Application to Precision Positioning Systems
S. Ali Hosseini, Nima Karbasizadeh, S. Hassan HosseiniNia
https://arxiv.org/abs/2507.04707

Higher-Order Harmonics Reduction in Reset-Based Control Systems: Application to Precision Positioning Systems
To address the limitations imposed by Bode's gain-phase relationship in linear controllers, a reset-based filter called the Constant in gain- Lead in phase (CgLp) filter has been introduced. This filter consists of a reset element and a linear lead filter. However, the sequencing of these two components has been a topic of debate. Positioning the lead filter before the reset element in the loop leads to noise amplification in the reset signal, whereas placing the lead filter after the reset ele…

Quadratic Extended and Unscented Kalman Filter Updates
Simone Servadio, Chiran Cherian
https://arxiv.org/abs/2506.06256 https://arxiv…

Quadratic Extended and Unscented Kalman Filter Updates
Common filters are usually based on the linear approximation of the optimal minimum mean square error estimator. The Extended and Unscented Kalman Filters handle nonlinearity through linearization and unscented transformation, respectively, but remain linear estimators, meaning that the state estimate is a linear function of the measurement. This paper proposes a quadratic approximation of the optimal estimator, creating the Quadratic Extended and Quadratic Unscented Kalman Filter. These retain…

Quantum-enhanced laser phase noise filter
Ruixin Li, Nanjing Jiao, Bingnan An, Yajun Wang, Shaoping Shi, Long Tian, Wei Li, Yaohui Zheng
https://arxiv.org/abs/2507.05771

Quantum-enhanced laser phase noise filter
Quantum noise is the fundamental limit of laser phase noise filter. We cannot realize the effective quantum-enhanced phase noise suppression through simply utilizing amplitude noise suppression scheme. Here, we present the first experimental demonstration of a quantum-enhanced laser phase noise filter, achieved by employing a noise ellipse rotation phase noise readout technique combined with an excess amplitude noise suppression scheme. We address the primary limitations in the extracting of la…

Finished the initial GPU based zero-crossing search block for libscopehal.
It's not used in anything yet as it's not an exact drop-in replacement API wise for the CPU version, but is massively faster (30x speedup for 50M points on 2080 Ti vs Xeon 6144) so I'll be gradually refactoring filters to take advantage of it,

Gentechnik-Debatte: Landwirte kämpfen mit Klimaschäden auf Feldern
Angesichts der Klimakrise wächst bei einigen Landwirten die Hoffnung auf gentechnisch veränderte Pflanzen – doch Kritiker warnen vor
Risiken.

From ID-based to ID-free: Rethinking ID Effectiveness in Multimodal Collaborative Filtering Recommendation
Guohao Li, Li Jing, Jia Wu, Xuefei Li, Kai Zhu, Yue He
https://arxiv.org/abs/2507.05715

From ID-based to ID-free: Rethinking ID Effectiveness in Multimodal Collaborative Filtering Recommendation
Most existing multimodal collaborative filtering recommendation (MCFRec) methods rely heavily on ID features and multimodal content to enhance recommendation performance. However, this paper reveals that ID features are effective but have limited benefits in multimodal collaborative filtering recommendation. Therefore, this paper systematically deconstruct the pros and cons of ID features: (i) they provide initial embedding but lack semantic richness, (ii) they provide a unique identifier for e…