检索结果-内蒙古大学图书馆

Local saliency consistency-based label inference for weakly supervised salient object detection using scribble annotations

引用

CAAI Transactions on Intelligence technology 2024年第1期9卷 239-249页

作者： Shuo Zhao Peng Cui Jing Shen Haibo Liu School of Computer Science and Technology Harbin University of Science and TechnologyHarbinChina School of Computer Science and Technology Harbin Engineering UniversityHarbinChina

Recently,weak supervision has received growing attention in the field of salient object detection due to the convenience of ***,there is a large performance gap between weakly supervised and fully supervised salient object detectors because the scribble annotation can only provide very limited foreground/background ***,an intuitive idea is to infer annotations that cover more complete object and background regions for *** this end,a label inference strategy is proposed based on the assumption that pixels with similar colours and close positions should have consistent ***,k-means clustering algorithm was first performed on both colours and coordinates of original annotations,and then assigned the same labels to points having similar colours with colour cluster centres and near coordinate cluster ***,the same annotations for pixels with similar colours within each kernel neighbourhood was set *** experiments on six benchmarks demonstrate that our method can significantly improve the performance and achieve the state-of-the-art results.

关键词： label inference salient object detection weak supervision

来源：评论

学校读者我要写书评

暂无评论

Research and design of matrix operation accelerator based on reconfigurable array

引用

High technology Letters 2024年第2期30卷 128-137页

作者：邓军勇 ZHANG Pan JIANG Lin xiE xiaoyan DENG Jingwen School of Electronic Engineering Xi’an University of Posts and TelecommunicationsXi’an 710121P.R.China School of Computer Science and Technology Xi’an University of Science and TechnologyXi’an 710054P.R.China School of Computer Xi’an University of Posts and TelecommunicationsXi’an 710121P.R.China

In the case of massive data,matrix operations are very computationally intensive,and the memory limitation in standalone mode leads to the system *** the same time,it is difficult for matrix operations to achieve flexible switching between different requirements when implemented in *** address this problem,this paper proposes a matrix operation accelerator based on reconfigurable arrays in the context of the application of recommender systems(RS).Based on the reconfigurable array processor(APR-16)with reconfiguration,a parallelized design of matrix operations on processing element(PE)array is realized with *** experimental results show that,compared with the proposed central processing unit(CPU)and graphics processing unit(GPU)hybrid implementation matrix multiplication framework,the energy efficiency ratio of the accelerator proposed in this paper is improved by about 35×.Compared with blocked alternating least squares(BALS),its the energy efficiency ratio has been accelerated by about 1×,and the switching of matrix factorization(MF)schemes suitable for different sparsity can be realized.

关键词： matrix factorization(MF) recommender system(RS) array processor reconfigurable matrix multiplication

来源：评论

学校读者我要写书评

暂无评论

Consistency preserving database watermarking algorithm for decision trees

引用

Digital Communications and Networks 2024年第6期10卷 1851-1863页

作者： Qianwen Li xiang Wang Qingqi Pei xiaohua Chen Kwok-Yan Lam School of Telecommunications Engineering Xidian UniversityXi'an710071China School of Cyber Engineering Xidian UniversityXi'an710071China School of Telecommunications Engineering Xidian UniversityXi'anChina 2012 Laboratories Huawei TechnologesHuawei Technology CoLtdHangzhou310000China The School of Computer Science and Engineering Nanyang Technological University639798Singapore

Database watermarking technologies provide an effective solution to data security problems by embedding the watermark in the database to prove copyright or trace the source of data ***,when the watermarked database is used for data mining model building,such as decision trees,it may cause a different mining result in comparison with the result from the original database caused by the distortion of watermark *** watermarking algorithms mainly consider the statistical distortion of data,such as the mean square error,but very few consider the effect of the watermark on database ***,in this paper,a consistency preserving database watermarking algorithm is proposed for decision ***,label classification statistics and label state transfer methods are proposed to adjust the watermarked data so that the model structure of the watermarked decision tree is the same as that of the original decision ***,the splitting values of the decision tree are adjusted according to the defined constraint ***,the adjusted database can obtain a decision tree consistent with the original decision *** experimental results demonstrated that the proposed algorithm does not corrupt the watermarks,and makes the watermarked decision tree consistent with the original decision tree with a small distortion.

关键词： Consistency preserving Decision tree Database watermarking Data mining

来源：评论

学校读者我要写书评

暂无评论

A Sentence Retrieval Generation Network Guided Video Captioning

引用

computers, Materials & Continua 2023年第6期75卷 5675-5696页

作者： Ou Ye Mimi Wang Zhenhua Yu Yan Fu Shun Yi Jun Deng College of Computer Science and Technology Xi’an University of Science and TechnologyXi’an710054China College of Safety and Engineering Xi’an University of Science and TechnologyXi’an710054China

Currently,the video captioning models based on an encoder-decoder mainly rely on a single video input *** contents of video captioning are limited since few studies employed external corpus information to guide the generation of video captioning,which is not conducive to the accurate descrip-tion and understanding of video *** address this issue,a novel video captioning method guided by a sentence retrieval generation network(ED-SRG)is proposed in this ***,a ResNeXt network model,an efficient convolutional network for online video understanding(ECO)model,and a long short-term memory(LSTM)network model are integrated to construct an encoder-decoder,which is utilized to extract the 2D features,3D features,and object features of video data *** features are decoded to generate textual sentences that conform to video content for sentence ***,a sentence-transformer network model is employed to retrieve different sentences in an external corpus that are semantically similar to the above textual *** candidate sentences are screened out through similarity ***,a novel GPT-2 network model is constructed based on GPT-2 network *** model introduces a designed random selector to randomly select predicted words with a high probability in the corpus,which is used to guide and generate textual sentences that are more in line with human natural language *** proposed method in this paper is compared with several existing works by *** results show that the indicators BLEU-4,CIDEr,ROUGE_L,and METEOR are improved by 3.1%,1.3%,0.3%,and 1.5%on a public dataset MSVD and 1.3%,0.5%,0.2%,1.9%on a public dataset MSR-VTT *** can be seen that the proposed method in this paper can generate video captioning with richer semantics than several state-of-the-art approaches.

关键词： Video captioning encoder-decoder sentence retrieval external corpus RS GPT-2 network model

来源：评论

学校读者我要写书评

暂无评论

Ultrafast high-temperature sintering of high-entropy oxides with refined microstructure and superior lithium-ion storage performance

引用

Journal of Advanced Ceramics 2023年第10期12卷 1857-1871页

作者： Yuhang Bai Jinrui Li Hai Lu Jia Liu Cuiying Ma Bin Wang xing Zhao Jun Deng School of Material Science and Engineering Xi’an University of Science and TechnologyXi’an 710054China Department of Mechanical Engineering City University of Hong KongHong Kong 999077China School of Safety Science and Engineering Xi’an University of Science and TechnologyXi’an 710054China

High-entropy oxides(HEOs)have received significant attention because of their tunable mechanical properties and wide range of functional ***,the conventional method used for sintering HEOs requires prolonged processing time,which results in excessive grain growth,thereby compromising their ***,an ultrafast high-temperature sintering(UHS)strategy was adopted,and rock-salt composite(Mg_(0.2)Co_(0.2)Ni_(0.2)Cu_(0.2)Zn_(0.2))O was selected as model *** parameters were tuned to illustrate the influence of applied current and soaking time on the densification process and resulting grain ***,the electrochemical performance of UHS-synthesized microparticles as anode materials in lithium-ion batteries was *** results show that the ultrafast heating rate results in fine grains with a diameter of~6–8μm and density of 95%,which are much smaller and similar to those obtained using the conventional sintering method(25μm and 96%).Moreover,the high surface area and reactivity of the microparticles,as well as their sluggish diffusion effect and structural stability,contribute to outstanding performance with high capacity(336 mA·h/g at 1 A/g)and ultralong cyclability(1000 cycles).This novel technique offers valuable insights into the densification process of HEOs and other materials and can thus broaden their application range.

关键词： ultrafast high-temperature sintering(UHS) high-entropy oxide(HEO) microstructure Li-ion battery anode materials

来源：评论

学校读者我要写书评

暂无评论

Energy-efficient reconfigurable processor for QC-LDPC via adaptive coding-voltage-frequency tuning

引用

The Journal of China Universities of Posts and Telecommunications 2024年第2期31卷 72-84页

作者： Chang Libo Hu Yiqing Du Huimin Wang Jihe School of Electronic Engineering Xi'an University of Posts and TelecommunicationsXi'an 710121China School of Computer Science Northwestern Polytechnical UniversityXi'an 710072China

To apply a quasi-cyclic low density parity check(QC-LDPC)to different scenarios,a data-stream driven pipelined macro instruction set and a reconfigurable processor architecture are proposed for the typical QC-LDPC *** data-level parallelism is improved by instructions to dynamically configure the multi-core computing ***,an intelligent adjustment strategy based on a programmable wake-up controller(WuC)is designed so that the computing mode,operating voltage,and frequency of the QC-LDPC algorithm can be *** adjustment can improve the computing efficiency of the *** QC-LDPC processors are verified on the xilinx ZCU102 field programmable gate array(FPGA)board and the computing efficiency is *** experimental results indicate that the QC-LDPC processor can support two encoding lengths of three typical QC-LDPC algorithms and 20 adaptive operating modes of operating voltage and *** maximum efficiency can reach up to 12.18 Gbit/(s·W),which is more flexible than existing state-of-the-art processors for QC-LDPC.

关键词： quasi-cyclic low density parity check(QC-LDPC) dynamic voltage and frequency scaling(DVFS) reconfigurable computing coarse-grained reconfigurable arrays(CGRAs)

来源：评论

学校读者我要写书评

暂无评论

Epidemiological Insights and Forecasting of HIV/AIDS Mortality: A Case Study of South Africa and Myanmar Using Machine Learning Approaches

IAENG International Journal of Computer Science

引用

IAENG International Journal of computer science 2024年第12期51卷 2067-2073页

作者： Yang, Wenbin Chang, xin School of Science Xi’an University of Posts and Telecommunications Xi’an710121 China School of Computer Science & Technology Xi’an University of Posts and Telecommunications Xi’an710121 China

HIV/AIDS is one of the deadliest infectious diseases in the world, causing nearly one million deaths annually. In some countries, HIV/AIDS is the leading cause of death, especially in regions like South Africa. In the Asian region, Myanmar is also a high-prevalence area for HIV/AIDS-related deaths. This study utilized data on HIV/AIDS-related deaths from 1990 to 2019, sourced from ***/HIV/AIDS. LR, SVM, RF and XGBoost models were introduced to predict the four-year mortality trends in South Africa and Myanmar. Model performance was evaluated using metrics including RMSE, MAE, MSE, MAPE, and Pinball. By fitting and forecasting mortality data from the past several years, it was observed that the LR model outperformed other models in predicting trends in South Africa and Myanmar. The LR model’s predictions were closer to the actual outcomes. This study aids in understanding mortality trends in these regions, offers insights for epidemiological control, and helps other countries take preventive measures and formulate policies to combat this epidemic. © (2024), (International Association of Engineers). All rights reserved.

关键词： Prediction models

来源：评论

学校读者我要写书评

暂无评论

A Survey of Spark Scheduling Strategy Optimization Techniques and Development Trends

引用

computers, Materials and Continua 2025年第3期83卷 3843-3875页

作者： Li, Chuan Wen, Xuanlin Department of Computer Science and Technology School of Computer Science Xi’an University of Posts and Telecommunications Xi’an710100 China

Spark performs excellently in large-scale data-parallel computing and iterative processing. However, with the increase in data size and program complexity, the default scheduling strategy has difficulty meeting the demands of resource utilization and performance optimization. Scheduling strategy optimization, as a key direction for improving Spark’s execution efficiency, has attracted widespread attention. This paper first introduces the basic theories of Spark, compares several default scheduling strategies, and discusses common scheduling performance evaluation indicators and factors affecting scheduling efficiency. Subsequently, existing scheduling optimization schemes are summarized based on three scheduling modes: load characteristics, cluster characteristics, and matching of both, and representative algorithms are analyzed in terms of performance indicators and applicable scenarios, comparing the advantages and disadvantages of different scheduling modes. The article also explores in detail the integration of Spark scheduling strategies with specific application scenarios and the challenges in production environments. Finally, the limitations of the existing schemes are analyzed, and prospects are envisioned. Copyright © 2025 The Authors.

关键词： Cluster computing

来源：评论

学校读者我要写书评

暂无评论

Effects of firefighters’protective gloves on physiological responses,psychological responses,and manual performance in a cold environment

引用

Journal of Safety science and Resilience 2025年第1期6卷 48-57页

作者： Jie Yang xiaoxue Yan College of Safety Science and Engineering Xi’an University of Science and TechnologyXi’an710054China School of Biological Science and Medical Engineering Beihang UniversityBeijing100191China

This study aimed to investigate the effects of firefighters’protective gloves on physiological responses,psychological responses,and manual performance in a cold environment through human *** participants wearing firefighter protective equipment were exposed to a 16℃ environment,while their hands were exposed to a small chamber of 0℃ with(FPG)and without(CON)firefighting protective *** the trials,physiological responses(core temperature(Tc),the mean skin temperature(Tsk),and heart rate(HR)),psychological responses(thermal sensation vote(TSV)and pain sensation vote(PSV)),and manual performance(handgrip strength,manual dexterity,maximum finger flexion,and tactile sensitivity)were *** results indicated a significant difference(p<0.05)between FPG and CON regarding ***,pain sensation occurred when the mean skin temperature of the hand was between 15℃ and 20℃.Gloves significantly(p<0.05)reduced handgrip strength,manual dexterity,and tactile sensitivity in the cold *** study provides fundamental knowledge for cold strain assessment and high-performance protective glove development with the potential to improve firefighters’safety and health.

关键词： Gloves Physiological responses Psychological responses Manual performance Cold environment

来源：评论

学校读者我要写书评

暂无评论

Modulated noble metal/2D MOF heterostructures for improved hydrogen storage of MgH_(2)

引用

Rare Metals 2024年第4期43卷 1672-1685页

作者： Zeng-Yi Li Li-xian Sun Fen Xu Yu-Mei Luo Yong-Peng xia Sheng Wei Chen-Chen Zhang Ri-Guang Cheng Chao-Feng Ye Meng-Yuan Liu Ju-Lan Zeng Zhong Cao Hong-Ge Pan School of Material Science and Engineering Guilin University of Electronic TechnologyGuilin541004China School of Chemistry and Chemical Engineering Changsha University of Science and TechnologyChangsha410114China Institute of Science and Technology for New Energy Xi’an Technological UniversityXi’an710021China

The conjugation of external species with twodimensional(2D)materials has broad application *** this study,we have explored the potential of noble metal/2D MOF heterostructures in hydrogen ***,the MgH_(2)-Ni-MOF@Pd system has shown remarkable hydrogen desorption/sorption performances,starting to liberate hydrogen at 1810C,which is 2300C lower than that of pristine *** the catalytic effect of Ni-MOF@Pd,the dehydrogenation apparent activation energy of MgH2 is noticeably decreased from(133.5±17.5)to(34.58±1.87)kJ·moL^(-1),and the hydrogenation apparent activation energy is reduced from(70.41±7.43)to(25.78±4.64)kJ·moL^(-1),which is lowered by 63.4%.The fully-dehydrogenated MgH2-NiMOF@Pd composite rapidly uptakes hydrogen,with 2.62wt%at 100℃and 6.06 wt%at 150℃within 300 s,*** mechanism analysis of MgH2 catalyzed by Ni-MOF@Pd has revealed that the transformation of Mg_2Ni and Mg_2NiH_4 could act as a"hydrogen pump",providing numerous channels for fast diffusion and transport of hydrogen ***,in the dehydrogenation process,the element Pd reacts with MgH_(2)to form the MgPd alloy phase,which makes MgH_(2)take precedence to decompose through the Mg-Pd alloy rather than self-decomposition,further reducing thermal stability and improving de/hydrogenation *** synergistic effect of Mg-Pd,Mg_2Ni,and the special ultra-thin 2D sheet structure of the additive is the main reason for the good hydrogen storage property of MgH_(2)-Ni-MOF@*** findings provide inspiration for designing efficient multifunctional additives with unique morphologies to optimize the hydrogen desorption/sorption behaviors of hydrogen storage materials.

关键词： Hydrogen storage Magnesium hydride 2D metal-organic framework nanosheets Ni/Pd Synergistic catalysis

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：