Results 1 to 10 of about 956,261 (219)

Macerals of lignite and the effect of alkali treatment on the structure and combustion performance of lignite

open access: yesMeitan xuebao, 2023
Suppressing the spontaneous combustion of lignite is of great significance for safe transportation and efficient utilization of lignite. Taking the Shengli lignite as the research object, two different macerals, inertinite and huminite, were selected by ...
Yanjun WANG   +7 more
doaj   +1 more source

Research Progress on Electro-Chemical Oxidation of Low-Rank Coal to Humic Acid

open access: yes南方能源建设, 2022
[Introduction] With the vigorous development of renewable energy, clean and efficient utilization of low-rank coal not only improves resource utilization and economic value but also has great social significance.
Ruzhan BAI   +6 more
doaj   +1 more source

Low-Rank Gradient Descent

open access: yesIEEE Open Journal of Control Systems, 2023
Several recent empirical studies demonstrate that important machine learning tasks such as training deep neural networks, exhibit a low-rank structure, where most of the variation in the loss function occurs only in a few directions of the input space ...
Romain Cosson   +4 more
doaj   +1 more source

Low‐rank isomap algorithm

open access: yesIET Signal Processing, 2022
Isomap is a well‐known nonlinear dimensionality reduction method that highly suffers from computational complexity. Its computational complexity mainly arises from two stages; a) embedding a full graph on the data in the ambient space, and b) a complete ...
Eysan Mehrbani, Mohammad Hossein Kahaei
doaj   +1 more source

Simultaneous Multislice Brain MRI T1 Mapping with Improved Low-Rank Modeling

open access: yesTomography, 2021
To accelerate data acquisition speed in magnetic resonance imaging (MRI), multiple slices are simultaneously acquired using multiband pulses. Simultaneous multislice (SMS) imaging typically unfolds slice aliasing from the acquired collapsed slices.
Sugil Kim, Suhyung Park
doaj   +1 more source

Using benzene carboxylic acids to prepare zirconium-based catalysts for the conversion of biomass-derived furfural

open access: yesInternational Journal of Coal Science & Technology, 2017
Benzene carboxylic acid (BCAs) are common and useful chemical blocks, which can be derived from the abundant low rank coals (LRCs) via oxidative degradation. In this work, we proposed a novel strategy to utilize BCAs as raw materials to prepare catalysts
Huacong Zhou   +8 more
doaj   +1 more source

Single-Image Simultaneous Destriping and Denoising: Double Low-Rank Property

open access: yesRemote Sensing, 2023
When a remote sensing camera work in push-broom mode, the obtained image usually contains significant stripe noise and random noise due to differences in detector response and environmental factors.
Xiaobin Wu   +5 more
doaj   +1 more source

Non-Negative Low Rank Graph Embedding Algorithm

open access: yesJisuanji kexue yu tansuo, 2020
The existing non-negative matrix factorization (NMF) algorithms still have some shortcomings. On one hand, the NMF method calculates its low-dimensional representation directly on the high-dimensional original image data set, but in fact the effective ...
LIU Guoqing, LU Guifu, ZHOU Sheng, XUAN Dongdong, CAO Along
doaj   +1 more source

Randomized Rank-Revealing QLP for Low-Rank Matrix Decomposition

open access: yesIEEE Access, 2023
The pivoted QLP decomposition is computed through two consecutive pivoted QR decompositions. It is an approximation to the computationally prohibitive singular value decomposition (SVD). This work is concerned with a partial QLP decomposition of matrices
Maboud F. Kaloorazi   +4 more
doaj   +1 more source

A Training Method for Low Rank Convolutional Neural Networks Based on Alternating Tensor Compose-Decompose Method

open access: yesApplied Sciences, 2021
Over the past decade, deep learning-based computer vision methods have been shown to surpass previous state-of-the-art computer vision techniques in various fields, and have made great progress in various computer vision problems, including object ...
Sukho Lee   +3 more
doaj   +1 more source

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