July 2022 – Page 4 – Kavli Institute Pre-Print Publications

The Infrared Medium-deep Survey. IX. Discovery of Two New $zsim6$ Quasars and Space Density down to $M_{1450}sim-23.5$ mag

Posted by klaurent July 25, 2022Peking

Kavli Affiliate: Linhua Jiang | First 5 Authors: Yongjung Kim, Myungshin Im, Yiseul Jeon, Minjin Kim, Linhua Jiang | Summary: We present the result of the Infrared Medium-deep Survey (IMS) $zsim6$ quasar survey, using the combination of the IMS near-infrared images and the Canada-France-Hawaii Telescope Legacy Survey (CFHTLS) optical images. The traditional color-selection method results […]

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Model-based Unbiased Learning to Rank

Posted by klaurent July 24, 2022Cornell

Kavli Affiliate: Dan Luo | First 5 Authors: Dan Luo, Lixin Zou, Qingyao Ai, Zhiyu Chen, Dawei Yin | Summary: Unbiased Learning to Rank~(ULTR) that learns to rank documents with biased user feedback data is a well-known challenge in information retrieval. Existing methods in unbiased learning to rank typically rely on click modeling or inverse […]

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Learning Dynamic Facial Radiance Fields for Few-Shot Talking Head Synthesis

Posted by klaurent July 24, 2022UCAS

Kavli Affiliate: Zheng Zhu | First 5 Authors: Shuai Shen, Wanhua Li, Zheng Zhu, Yueqi Duan, Jie Zhou | Summary: Talking head synthesis is an emerging technology with wide applications in film dubbing, virtual avatars and online education. Recent NeRF-based methods generate more natural talking videos, as they better capture the 3D structural information of […]

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Cortical surface electrical potentials are composed of multiple bandlimited frequency components, including high-gamma

Posted by klaurent July 23, 2022August 1, 2022UCSF

Kavli Affiliate: Kristofer Bouchard, Edward Chang | Authors: Jesse A Livezey, Ahyeon Hwang, Kseniya Usovich, Maximilian Dougherty, Edward F Chang and Kristofer E Bouchard | Summary: A common challenge in neuroscience is how to decompose noisy, multi-source signals measured in experiments into biophysically interpretable components. Analysis of cortical surface electrical potentials (CSEPs) measured using electrocorticography […]

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Oxytocin receptor is not required for social attachment in prairie voles

Posted by klaurent July 23, 2022August 1, 2022UCSF

Kavli Affiliate: Devanand Manoli | Authors: Kristen M. Berendzen, Ruchira Sharma, Maricruz Alvarado, YiChao Wei, Forrest D. Rogers, Adele Seelke, Trenton C. Simmons, Jessica Bond, Rose D. Larios, Michael Sherman, Srinivas Parthasarathy, Isidero Espineda, Joseph R. Knoedler, Annaliese Beery, Karen L. Bales, Nirao M Shah and Devanand S. Manoli | Summary: Prairie voles are among […]

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Suboptimal phenotypic reliability impedes reproducible human neuroscience

Posted by klaurent July 23, 2022August 1, 2022Hopkins

Kavli Affiliate: Joshua Vogelstein | Authors: Aki Nikolaidis, Andrew An Chen, Xiaoning He, Russell Shinohara, Joshua Vogelstein, Michael Milham and Haochang Shou | Summary: Biomarkers of behavior and psychiatric illness for cognitive and clinical neuroscience remain out of reach. Suboptimal reliability of biological measurements, such as functional magnetic resonance imaging (fMRI), is increasingly cited as […]

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A Taxonomy of Recurrent Learning Rules

Posted by klaurent July 23, 2022Delft

Kavli Affiliate: Sander Otte| First 5 Authors: Guillermo Martín-Sánchez, Guillermo Martín-Sánchez, , , | Summary:Backpropagation through time (BPTT) is the de facto standard for training recurrent neural networks (RNNs), but it is non-causal and non-local. Real-time recurrent learning is a causal alternative, but it is highly inefficient. Recently, e-prop was proposed as a causal, local, […]

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Measurements of the branching fraction, isospin asymmetry, and lepton-universality ratio in $B to J/ψK$ decays at Belle II

Posted by klaurent July 22, 2022Tokyo

Kavli Affiliate: T. Higuchi | First 5 Authors: Belle II Collaboration, F. Abudinén, I. Adachi, R. Adak, K. Adamczyk | Summary: We report a study of $B to J/psi(ell^{+}ell^{-})K$ decays, where $ell$ represents an electron or a muon, using $e^{+}e^{-}$ collisions at the $Upsilon(4S)$ resonance. The data were collected by the Belle II experiment at […]

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A quantum electromechanical interface for long-lived phonons

Posted by klaurent July 22, 2022Caltech

Kavli Affiliate: Mohammad Mirhosseini | Summary:Controlling long-lived mechanical oscillators in the quantum regime holds promises for quantum information processing. Here, we present an electromechanical system capable of operating in the GHz-frequency band in a silicon-on-insulator platform. Relying on a novel driving scheme based on an electrostatic field and high-impedance microwave cavities based on TiN superinductors, […]

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Two-Stage Fine-Tuning: A Novel Strategy for Learning Class-Imbalanced Data

Posted by klaurent July 22, 2022Peking

Kavli Affiliate: Jing Wang | First 5 Authors: Taha ValizadehAslani, Yiwen Shi, Jing Wang, Ping Ren, Yi Zhang | Summary: Classification on long-tailed distributed data is a challenging problem, which suffers from serious class-imbalance and hence poor performance on tail classes with only a few samples. Owing to this paucity of samples, learning on the […]

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