IF 2.4 3区数学

Mathematics Pub Date : 2024-09-18 DOI: 10.3390/math12182910

Gabriel Neves Cunha, Francesca Faraci, Kaye Silva

引用次数: 0

An Attribute-Based End-to-End Policy-Controlled Signcryption Scheme for Secure Group Chat Communication 一种基于属性的端到端策略控制签名加密方案，用于安全群组聊天通信

IF 2.4 3区数学

Mathematics Pub Date : 2024-09-18 DOI: 10.3390/math12182906

Feng Yu, Linghui Meng, Xianxian Li, Daicen Jiang, Weidong Zhu, Zhihua Zeng

{"title":"An Attribute-Based End-to-End Policy-Controlled Signcryption Scheme for Secure Group Chat Communication","authors":"Feng Yu, Linghui Meng, Xianxian Li, Daicen Jiang, Weidong Zhu, Zhihua Zeng","doi":"10.3390/math12182906","DOIUrl":"https://doi.org/10.3390/math12182906","url":null,"abstract":"Secure instant communication is an important topic of information security. A group chat is a highly convenient mode of instant communication. Increasingly, companies are adopting group chats as a daily office communication tool. However, a large volume of messages in group chat communication can lead to message overload, causing group members to miss important information. Additionally, the communication operator’s server may engage in the unreliable behavior of stealing information from the group chat. To address these issues, this paper proposes an attribute-based end-to-end policy-controlled signcryption scheme, aimed at establishing a secure and user-friendly group chat communication mode. By using the linear secret sharing scheme (LSSS) with strong expressive power to construct the access structure in the signcryption technology, the sender can precisely control the recipients of the group chat information to avoid message overload. To minimize computational cost, a signcryption step with constant computational overhead is designed. Additionally, a message-sending mechanism combining “signcryption + encryption” is employed to prevent the operator server from maliciously stealing group chat information. Rigorous analysis shows that PCE-EtoE can resist adaptive chosen-ciphertext attacks under the standard model. Simulation results demonstrate that our theoretical derivation is correct, and that the PCE-EtoE scheme outperforms existing schemes in terms of computational cost, making it suitable for group chat communication.","PeriodicalId":18303,"journal":{"name":"Mathematics","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142249420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

AssocKD: An Association-Aware Knowledge Distillation Method for Document-Level Event Argument Extraction AssocKD：用于文档级事件论据提取的关联意识知识提炼方法

IF 2.4 3区数学

Mathematics Pub Date : 2024-09-18 DOI: 10.3390/math12182901

Lijun Tan, Yanli Hu, Jianwei Cao, Zhen Tan

{"title":"AssocKD: An Association-Aware Knowledge Distillation Method for Document-Level Event Argument Extraction","authors":"Lijun Tan, Yanli Hu, Jianwei Cao, Zhen Tan","doi":"10.3390/math12182901","DOIUrl":"https://doi.org/10.3390/math12182901","url":null,"abstract":"Event argument extraction is a crucial subtask of event extraction, which aims at extracting arguments that correspond to argument roles when given event types. The majority of current document-level event argument extraction works focus on extracting information for only one event at a time without considering the association among events; this is known as document-level single-event extraction. However, the interrelationship among arguments can yield mutual gains in their extraction. Therefore, in this paper, we propose AssocKD, an Association-aware Knowledge Distillation Method for Document-level Event Argument Extraction, which enables the enhancement of document-level multi-event extraction with event association knowledge. Firstly, we introduce an association-aware training task to extract unknown arguments with the given privileged knowledge of relevant arguments, obtaining an association-aware model that can construct both intra-event and inter-event relationships. Secondly, we adopt multi-teacher knowledge distillation to transfer such event association knowledge from the association-aware teacher models to the event argument extraction student model. Our proposed method, AssocKD, is capable of explicitly modeling and efficiently leveraging event association to enhance the extraction of multi-event arguments at the document level. We conduct experiments on RAMS and WIKIEVENTS datasets and observe a significant improvement, thus demonstrating the effectiveness of our method.","PeriodicalId":18303,"journal":{"name":"Mathematics","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142249415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modified Cox Models: A Simulation Study on Different Survival Distributions, Censoring Rates, and Sample Sizes 修正的 Cox 模型：不同生存分布、删减率和样本量的模拟研究

IF 2.4 3区数学

Mathematics Pub Date : 2024-09-18 DOI: 10.3390/math12182903

Iketle Aretha Maharela, Lizelle Fletcher, Ding-Geng Chen

引用次数: 0

Novel Classes on Generating Functions of the Products of (p,q)-Modified Pell Numbers with Several Bivariate Polynomials 关于(p,q)修正佩尔数与多个二元多项式乘积的生成函数的新类别

IF 2.4 3区数学

Mathematics Pub Date : 2024-09-18 DOI: 10.3390/math12182902

Ali Boussayoud, Salah Boulaaras, Ali Allahem

引用次数: 0

On the Solutions of Linear Systems over Additively Idempotent Semirings 论线性系统在可加可幂半环上的解

IF 2.4 3区数学

Mathematics Pub Date : 2024-09-18 DOI: 10.3390/math12182904

Álvaro Otero Sánchez, Daniel Camazón Portela, Juan Antonio López-Ramos

引用次数: 0

Evolutionary Game and Simulation Analysis of New-Energy Vehicle Promotion in China Based on Reward and Punishment Mechanisms 基于奖惩机制的中国新能源汽车推广的演化博弈与仿真分析

IF 2.4 3区数学

Mathematics Pub Date : 2024-09-18 DOI: 10.3390/math12182900

Rongjiang Cai, Tao Zhang, Xi Wang, Qiaoran Jia, Shufang Zhao, Nana Liu, Xiaoguang Wang

{"title":"Evolutionary Game and Simulation Analysis of New-Energy Vehicle Promotion in China Based on Reward and Punishment Mechanisms","authors":"Rongjiang Cai, Tao Zhang, Xi Wang, Qiaoran Jia, Shufang Zhao, Nana Liu, Xiaoguang Wang","doi":"10.3390/math12182900","DOIUrl":"https://doi.org/10.3390/math12182900","url":null,"abstract":"In China, new-energy vehicles are viewed as the ultimate goal for the automobile industry, given the current focus on the “dual-carbon” target. Therefore, it is important to promote the sustainable development of this new-energy market and ensure a smooth transition from fuel-driven vehicles to new-energy vehicles. This study constructs a tripartite evolutionary game model involving vehicle enterprises, consumers, and the government. It improves the tripartite evolutionary game through the mechanisms of dynamic and static rewards and punishments, respectively, using real-world data. The results show the following. (1) A fluctuation is present in the sales of new-energy vehicles by enterprises and the active promotional behavior of the government. This fluctuation leads to instability, and the behavior is difficult to accurately predict, which is not conducive new-energy vehicles’ promotion and sales. (2) A static reward and punishment mechanism can change the fluctuation threshold or peak value. Nevertheless, the stability of the system’s strategy is not the main reason that the government has been actively promoting it for a long time. However, enterprises are still wavering between new-energy and fuel vehicles. (3) The linear dynamic reward and punishment mechanism also has its defects. Although they are considered the stability control strategy of the system, they are still not conducive to stability. (4) The nonlinear dynamic reward and punishment mechanism can help the system to achieve the ideal stabilization strategy.","PeriodicalId":18303,"journal":{"name":"Mathematics","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142249417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Privacy-Preserving Electromagnetic-Spectrum-Sharing Trading Scheme Based on ABE and Blockchain 基于 ABE 和区块链的保护隐私的电磁频谱共享交易方案

IF 2.4 3区数学

Mathematics Pub Date : 2024-09-18 DOI: 10.3390/math12182908

Xing Pu, Ruixian Wang, Xin Lu

{"title":"A Privacy-Preserving Electromagnetic-Spectrum-Sharing Trading Scheme Based on ABE and Blockchain","authors":"Xing Pu, Ruixian Wang, Xin Lu","doi":"10.3390/math12182908","DOIUrl":"https://doi.org/10.3390/math12182908","url":null,"abstract":"The electromagnetic spectrum is a limited resource. With the widespread application of the electromagnetic spectrum in various fields, the contradiction between the demand for the electromagnetic spectrum and electromagnetic spectrum resources has become increasingly prominent. Spectrum sharing is an effective way to improve the utilization of the electromagnetic spectrum. However, there are many challenges in existing distributed electromagnetic spectrum trading based on blockchain technology. Since a blockchain does not provide privacy protection, the risk of privacy leakage during the trading process makes electromagnetic spectrum owners unwilling to share. In addition, a blockchain only guarantees integrity, and the imperfect trading dispute resolution mechanism causes electromagnetic spectrum owners to be afraid to share. Therefore, we propose a privacy-preserving electromagnetic-spectrum-sharing trading scheme based on blockchain and ABE. The scheme not only designs an ABE fine-grained access control model in ciphertext form but also constructs a re-encryption algorithm that supports trading arbitration to achieve privacy protection for electromagnetic spectrum trading. Finally, we experimentally evaluated the efficiency of the proposed electromagnetic spectrum trading scheme. The experimental results show that the electromagnetic spectrum trading scheme we propose was highly efficient.","PeriodicalId":18303,"journal":{"name":"Mathematics","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142249099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Incorporating Digital Footprints into Credit-Scoring Models through Model Averaging 通过模型平均法将数字足迹纳入信用评分模型

IF 2.4 3区数学

Mathematics Pub Date : 2024-09-18 DOI: 10.3390/math12182907

Linhui Wang, Jianping Zhu, Chenlu Zheng, Zhiyuan Zhang

引用次数: 0

LMKCDEY Revisited: Speeding Up Blind Rotation with Signed Evaluation Keys 重温 LMKCDEY：使用签名评估密钥加速盲旋转

IF 2.4 3区数学

Mathematics Pub Date : 2024-09-18 DOI: 10.3390/math12182909

Yongwoo Lee

引用次数: 0

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