Results 21 to 30 of about 25,642 (150)

Implementation and Performance Evaluation of the Frequency-Domain-Based Bit Flipping Controller for Stabilizing the Single-Bit High-Order Interpolative Sigma Delta Modulators

open access: yesApplied Sciences, 2020
This paper is an extension of the existing works on the frequency-domain-based bit flipping control strategy for stabilizing the single-bit high-order interpolative sigma delta modulator. In particular, this paper proposes the implementation and performs
Huishan Zhai, Bingo Wing-Kuen Ling
doaj   +1 more source

Minisuperspace Quantization of f(T, B) Cosmology

open access: yesUniverse, 2021
We discuss the quantization in the minisuperspace for the generalized fourth-order teleparallel cosmological theory known as fT, B. Specifically we focus on the case where the theory is linear on the torsion scalar, in that consideration we are able to ...
Andronikos Paliathanasis
doaj   +1 more source

Composite Quantization

open access: yesIEEE Transactions on Pattern Analysis and Machine Intelligence, 2019
This paper studies the compact coding approach to approximate nearest neighbor search. We introduce a composite quantization framework. It uses the composition of several ($M$) elements, each of which is selected from a different dictionary, to accurately approximate a $D$-dimensional vector, thus yielding accurate search, and represents the data ...
Jingdong Wang, Ting Zhang
openaire   +3 more sources

On the Validity of the Noise Model of Quantization for the Frequency-Domain Amplitude Estimation of Low-Level Sine Waves

open access: yesMetrology and Measurement Systems, 2015
This paper deals with the amplitude estimation in the frequency domain of low-level sine waves, i.e. sine waves spanning a small number of quantization steps of an analog-to-digital converter.
Bellan Diego
doaj   +1 more source

Receiver Energy Efficiency and Transmission Latency Analysis of Outage-Constrained Differential PSK With a Finite Resolution ADC

open access: yesIEEE Access, 2021
We consider a power constrained downlink communication scenario where energy efficiency, reliability, and latency take precedence over rate, as in some Internet of Things (IoT) applications.
Sherief Helwa, Naofal Al-Dhahir
doaj   +1 more source

Analysis of Application of Cluster Descriptions in Space of Characteristic Image Features

open access: yesData, 2018
In this paper, we propose an investigation of the properties of structural image recognition methods in the cluster space of characteristic features. Recognition, which is based on key point descriptors like SIFT (Scale-invariant Feature Transform), SURF
Oleksii Gorokhovatskyi   +2 more
doaj   +1 more source

About its own time and the mass of the universe

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics, 2021
A modification of the quantum theory of gravity in the case of a closed universe, in which the dynamics is reduced to the motion in the orbit of a group of general covariance, is proposed.
Gorobey Natalia   +2 more
doaj   +1 more source

Graph quantization

open access: yesComputer Vision and Image Understanding, 2011
Vector quantization(VQ) is a lossy data compression technique from signal processing, which is restricted to feature vectors and therefore inapplicable for combinatorial structures. This contribution presents a theoretical foundation of graph quantization (GQ) that extends VQ to the domain of attributed graphs.
Jain, Brijnesh J., Obermayer, Klaus
openaire   +2 more sources

Communication Efficient Federated Learning With Quantization-Aware Training Design

open access: yesIEEE Transactions on Machine Learning in Communications and Networking
Model quantization is an effective method that can improve communication efficiency in federated learning (FL). The existing FL quantization protocols almost stay at the level of post-training quantization (PTQ), which comes at the cost of large ...
Xiang Fang   +4 more
doaj   +1 more source

Branched Quantization

open access: yesPhysical Review Letters, 2012
We propose a method for quantization of Lagrangians for which the Hamiltonian, as a function of momentum, is a branched function with cusps. Appropriate boundary conditions, which we identify, insure unitary time evolution. In special cases a dual (canonical) transformation maps the problem into a problem of quantum mechanics on singular spatial ...
Shapere, Alfred, Wilczek, Frank
openaire   +5 more sources

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