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      Performance of the Dark Energy Spectroscopic Instrument(DESI) Fiber System

      January 27, 2021

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      Physics
      Instrumentation and Methods for Astrophysics
      The recently commissioned Dark Energy Spectroscopic Instrument (DESI) will measure the expansion historyof the universe using the Baryon Acoustic Oscillation technique. The spectra of 35 million galaxies and quasarsover 14000 sq deg will be...

      The black hole spin in GRS 1915+105, revisited

      January 27, 2021

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      Physics
      High Energy Astrophysical Phenomena
      We estimate the black hole spin parameter in GRS 1915+105 using the continuum-fitting method with revised mass and inclination constraints based on the very long baseline interferometric parallax measurement of the distance to this source. ...

      Decision Machines: An Extension of Decision Trees

      January 27, 2021

      Computer Science
      Mathematics
      Statistics
      Machine Learning
      Optimization and Control
      Machine Learning
      Based on decision trees, it is efficient to handle tabular data. Conventional decision tree growth methods often result in suboptimal trees because of their greedy nature. Their inherent structure limits the options of hardware to implement...

      Steklov-type 1D inequalities (a survey)

      January 26, 2021

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      Mathematics
      Classical Analysis and ODEs
      Classical Analysis and ODEs
      We give a survey of classical and recent results on sharp constants and symmetry/asymmetry of extremal functions in 111-dimensional functional inequalities....

      The membership problem for constant-sized quantum correlations is undecidable

      January 26, 2021

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      Physics
      Computer Science
      Quantum Physics
      Computational Complexity
      Quantum Physics
      Computational Complexity
      When two spatially separated parties make measurements on an unknown entangled quantum state, what correlations can they achieve? How difficult is it to determine whether a given correlation is a quantum correlation? These questions are cen...

      AINet+: Advancing Superpixel Segmentation via Cascaded Association Implantation

      January 26, 2021

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      Computer Science
      Computer Vision and Pattern Recognition
      Computer Vision and Pattern Recognition
      Superpixel segmentation has seen significant progress benefiting from the deep convolutional networks. The typical approach entails initial division of the image into grids, followed by a learning process that assigns each pixel to adjacent...

      Text2Gestures: A Transformer-Based Network for Generating Emotive Body Gestures for Virtual Agents

      January 26, 2021

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      Computer Science
      Human-Computer Interaction
      Graphics
      Human-Computer Interaction
      Graphics
      We present Text2Gestures, a transformer-based learning method to interactively generate emotive full-body gestures for virtual agents aligned with natural language text inputs. Our method generates emotionally expressive gestures by utilizi...

      BE-RAN: Blockchain-enabled Open RAN for 6G with DID and Privacy-Preserving Communication

      January 26, 2021

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      Computer Science
      Cryptography and Security
      Distributed, Parallel, and Cluster Computing
      Networking and Internet Architecture
      As 6G networks evolve towards a synergistic system of Communication, Sensing, and Computing, Radio Access Networks become more distributed, necessitating robust end-to-end authentication. We propose Blockchain-enabled Radio Access Networks,...

      FDApy: a Python package for functional data

      January 26, 2021

      Computer Science
      Statistics
      Mathematical Software
      Machine Learning
      Computation
      Machine Learning
      We introduce FDApy, an open-source Python package for the analysis of functional data. The package provides tools for the representation of (multivariate) functional data defined on different dimensional domains and for functional data that...

      Homological Lie brackets on moduli spaces and pushforward operations in twisted K-theory

      January 26, 2021

      Mathematics
      K-Theory and Homology
      Algebraic Topology
      Differential Geometry
      We develop a general theory of pushforward operations for principal GGG-bundles equipped with a certain type of orientation. In the case G=BU(1)G=BU(1)G=BU(1) and orientations in twisted K-theory we construct two pushforward operations, the projectiv...
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