Weakly-Supervised Text-driven Contrastive Learning for Facial Behavior Understanding

Posted by klaurent Berkeley

Kavli Affiliate: Xiang Zhang | First 5 Authors: Xiang Zhang, Taoyue Wang, Xiaotian Li, Huiyuan Yang, Lijun Yin | Summary: Contrastive learning has shown promising potential for learning robust representations by utilizing unlabeled data. However, constructing effective positive-negative pairs for contrastive learning on facial behavior datasets remains challenging. This is because such pairs inevitably encode […]


Continue.. Weakly-Supervised Text-driven Contrastive Learning for Facial Behavior Understanding

Weakly-Supervised Text-driven Contrastive Learning for Facial Behavior Understanding

Posted by klaurent Berkeley

Kavli Affiliate: Xiang Zhang | First 5 Authors: Xiang Zhang, Taoyue Wang, Xiaotian Li, Huiyuan Yang, Lijun Yin | Summary: Contrastive learning has shown promising potential for learning robust representations by utilizing unlabeled data. However, constructing effective positive-negative pairs for contrastive learning on facial behavior datasets remains challenging. This is because such pairs inevitably encode […]


Continue.. Weakly-Supervised Text-driven Contrastive Learning for Facial Behavior Understanding

A large area 100 channel Picosec Micromegas detector with sub 20 ps time resolution

Posted by klaurent UCAS

Kavli Affiliate: Yi Zhou | First 5 Authors: Antonija Utrobicic, Yannis Angelis, Stephan Aune, Jonathan Bortfeldt, Florian Brunbauer | Summary: The PICOSEC Micromegas precise timing detector is based on a Cherenkov radiator coupled to a semi-transparent photocathode and a Micromegas amplification structure. The first proof of concept single-channel small area prototype was able to achieve […]


Continue.. A large area 100 channel Picosec Micromegas detector with sub 20 ps time resolution

Cosmological evolution of Witten superconducting string networks

Posted by klaurent Cambridge

Kavli Affiliate: E. P. S. Shellard | Summary:We consider the evolution of current-carrying cosmic string networks described by the charge-velocity-dependent one scale (CVOS) model beyond the linear equation of state regime, specifically focusing on the Witten superconducting model. We find that, generically, for almost chiral currents, the network evolution reduces dynamically to that of the […]


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Towards robust PICOSEC Micromegas precise timing detectors

Posted by klaurent UCAS

Kavli Affiliate: Yi Zhou | First 5 Authors: Marta Lisowska, Yannis Angelis, Stephan Aune, Jonathan Bortfeldt, Florian Brunbauer | Summary: The PICOSEC Micromegas (MM) detector is a precise timing gaseous detector consisting of a Cherenkov radiator combined with a photocathode and a MM amplifying structure. A 100-channel non-resistive PICOSEC MM prototype with 10×10 cm^2 active […]


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Detecting Nanometer-Scale New Forces with Coherent Neutron Scattering

Posted by klaurent Stanford

Kavli Affiliate: Giorgio Gratta | Summary:Significant effort has been devoted to searching for new fundamental forces of nature. At short length scales (below approximately 10 nm), the strongest experimental constraints come from neutron scattering from individual nuclei in gases. The leading experiments at longer length scales instead measure forces between macroscopic test masses. We propose […]


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Non-classical microwave-optical photon pair generation with a chip-scale transducer

Posted by klaurent Caltech

Kavli Affiliate: Oskar Painter | First 5 Authors: Srujan Meesala, Steven Wood, David Lake, Piero Chiappina, Changchun Zhong | Summary: Modern computing and communication technologies such as supercomputers and the internet are based on optically connected networks of microwave frequency information processors. In recent years, an analogous architecture has emerged for quantum networks with optically […]


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200,000 Candidate Very Metal-poor Stars in Gaia DR3 XP Spectra

Posted by Chicago

Kavli Affiliate: Alexander P. Ji | First 5 Authors: Yupeng Yao, Alexander P. Ji, Sergey E. Koposov, Guilherme Limberg, | Summary: Very metal-poor stars ($rm[Fe/H] < -2$) in the Milky Way are fossil records of early chemical evolution and the assembly and structure of the Galaxy. However, they are rare and hard to find. Gaia […]


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Tests of Classical Gravity with Radio Pulsars

Posted by dbos Peking

Kavli Affiliate: Lijing Shao | First 5 Authors: Zexin Hu, Xueli Miao, Lijing Shao, , | Summary: Tests of gravity are important to the development of our understanding of gravitation and spacetime. Binary pulsars provide a superb playground for testing gravity theories. In this chapter we pedagogically review the basics behind pulsar observations and pulsar […]


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