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General Fuzzy Switchboard Transformation Semigroup 通用模糊配电盘变换半群
Pub Date : 2024-04-03 DOI: 10.37934/araset.42.2.112
Nur Ain Ebas, Kavikumar Jacob, Mohd Saifullah, Muhammad Ammar Shafi, Nagarajan Deivanayagampillai
Commutative and switching processing are central to computation. However, some problems arise when classical versions do not reflect the true needs of current computer science, whereby they cannot predict the flow of the next input information in the specified output. The Switchboard State Machine is a controller that controls the direct flow of information from one state to another and also plays the main part in communication between the subsystems. If the simple system satisfies the two properties of the switching and commutative state machines, the system is therefore a finite switchboard state machine. The general fuzzy switchboard automation (GFSA) was introduced by incorporating the switchboard into the general fuzzy automation. This paper is intended to introduce the concept of a general fuzzy switchboard transformation semigroup (GFSTS) by combining the GFSA and the transformation semigroup. Some related definitions and properties are established. The example of certain products, such as GFSTS cascade products, has also been studied. General Fuzzy Switchboard Poly-Transformation Semigroup (GFSPS) is also introduced since it fulfils the switchboard state machine properties. Some of the definitions and properties associated with the GFSPS are defined. Applications for general fuzzy switchboard automata, such as washing machines, are also provided.
交换和切换处理是计算的核心。然而,当经典版本不能反映当前计算机科学的真正需求时,就会出现一些问题,即它们无法预测下一个输入信息在指定输出中的流向。配电盘状态机是一个控制器,它控制信息从一个状态直接流向另一个状态,同时也是子系统间通信的主要部分。如果简单系统满足开关状态机和换向状态机的两个特性,那么该系统就是有限开关状态机。一般模糊配电盘自动化(GFSA)是通过将配电盘纳入一般模糊自动化而引入的。本文旨在结合 GFSA 和变换半群,引入一般模糊配电盘变换半群(GFSTS)的概念。本文建立了一些相关的定义和属性。还研究了某些产品的实例,如 GFSTS 级联产品。由于通用模糊配电盘多变换半群(GFSPS)符合配电盘状态机的特性,因此也对其进行了介绍。定义了与 GFSPS 相关的一些定义和属性。此外,还介绍了洗衣机等通用模糊配电盘自动机的应用。
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引用次数: 0
Mathematical Modeling on Integrated Vehicle Assignment and Rebalancing in Ride-hailing System with Uncertainty Using Fuzzy Linear Programming 使用模糊线性规划对具有不确定性的乘车系统中的综合车辆分配和再平衡进行数学建模
Pub Date : 2024-04-03 DOI: 10.37934/araset.42.2.133144
Tubagus Robbi Megantara, S. Supian, Diah Chaerani
The general public frequently uses taxis as local transportation to get from one location to another. Ride-hailing is an innovation in taxi services that lets customers use their smartphones to find drivers, find prices, and submit requests. The two parts of ride-hailing are vehicle assignment and rebalancing. The task of the assignment is to allocate resources as efficiently as possible to fulfil demand. Demand and supply in the area are brought into balance through the rebalancing process. The rebalancing step is frequently carried out independently of the assignment process in ride-hailing pickup systems. However, it can be integrated into a single optimization process to improve system performance. The linear programming approach can integrate assignment and rebalancing. The batch assignment is an assignment algorithm in which each supply and demand is collected within a specific time window. The assignment is done after the vehicles and requests are collected. Fuzzy linear programming is used to deal with environmental uncertainty. Uncertain demand can reduce the reliability of ride-hailing pickup systems in addressing the problem of allocating empty vehicles to areas of high demand. The pickup time may change over time due to traffic conditions. Assignment integration and rebalancing modelling with fuzzy parameters are carried out to obtain a ride-hailing pickup system model that can handle demand uncertainty, pickup travel time, and travel delay times and increase the ride-hailing effectiveness of the pickup system. Numerical simulations were carried out on the assignment and rebalancing integration model without and with uncertainty parameters—numerical simulations based on publicly available taxi travel request data. The model selection for the ride-hailing system can be determined based on the numerical simulation results. This research can potentially advance and expand knowledge, especially in transportation.
公众经常使用出租车作为从一个地点到另一个地点的本地交通工具。打车服务是出租车服务的一种创新,客户可以使用智能手机寻找司机、查询价格并提交请求。打车服务的两个部分是车辆分配和再平衡。派车的任务是尽可能高效地分配资源以满足需求。通过再平衡过程,该地区的供需达到平衡。在打车取车系统中,再平衡步骤通常独立于分配过程之外进行。不过,可以将其整合到一个单一的优化过程中,以提高系统性能。线性规划方法可以将分配和再平衡整合在一起。批量分配是一种分配算法,其中每个供需双方都在特定的时间窗口内收集信息。分配是在收集到车辆和请求后进行的。模糊线性规划用于处理环境的不确定性。在解决将空车分配到高需求地区的问题时,不确定的需求会降低打车取车系统的可靠性。取车时间可能会因交通状况而随时间发生变化。通过对模糊参数进行分配整合和再平衡建模,得到了一种能处理需求不确定性、取车旅行时间和旅行延迟时间的乘车取车系统模型,并提高了取车系统的乘车效率。对无不确定性参数和有不确定性参数的指派和再平衡整合模型进行了数值模拟--数值模拟基于公开的出租车出行请求数据。根据数值模拟结果,可以确定乘车系统的模型选择。这项研究有可能推动和扩展知识,尤其是交通方面的知识。
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引用次数: 0
Impact Strain Signal Characteristics of Al and Mg under Instrumented Charpy Test 仪器夏比试验下铝和镁的冲击应变信号特征
Pub Date : 2024-04-03 DOI: 10.37934/araset.42.2.1326
Hikmah Zainuddin, Mohd Basri, Nurlaela Muhammad Said, K. A. Zakaria, S. D. Malingam, Mohd Hadzley, Abu Bakar, Nor Fauzi Tamin
Impact strain signal is used to examine strain signal patterns under various parameters. Impact is a complicated phenomenon that occurs within a millisecond timeframe. Material toughness is measured by the energy absorption recorded by the Charpy machine and closely related to the specimen fracture deformation. By utilizing the strain gauge and data acquisition, the impact strain signal provides additional data regarding impact duration, maximum strain value and the area under curve for a deeper understanding of the impact problem. A material with high toughness has great energy absorption and the capability to withstand high impact load. Although magnesium is lighter in weight compared to aluminium, aluminium is a better corrosion-resistant material and is stronger, which makes it more suitable to be fabricated as automotive structural components. Tensile test is typically used for investigating a material’s mechanical properties. In the automotive industry, materials are required to have good crashworthiness. This study investigates the relationship between the energy absorbed with the power spectral density and the area under strain–time graph for different materials, impact speeds, and material thicknesses. Furthermore, the relationship between the stress–strain curve and impact strain signal were examined. In this study, the behaviour of two materials, namely Aluminium 6061-T6 and Magnesium AM60, was investigated using instrumented Charpy test, by referring to the impact strain signal pattern result. For the experiment, strain gauge attached to the Charpy machine striker was employed and linked to the data acquisition system. Charpy impact specimen has three different thicknesses; 10 mm, 7.5 mm and 5 mm. Impact speed is at 3.35 m/s and 5.18 m/s. Results show a correlation between energy absorbed with strain energy. Strain energy obtained is directly proportional to the energy absorbed. Aluminium 6061-T6 has the highest energy absorption, maximum strain, and strain energy under power spectral density graph compared to Magnesium AM60. Relation of strain signal from Charpy test and stress–strain curve from tensile test shows a significant finding where the material deforms and fracture points are identified through the signal pattern and curve. Thus, the strain signal pattern can be used to predict material behaviour.
冲击应变信号用于研究各种参数下的应变信号模式。冲击是一种在毫秒时间内发生的复杂现象。材料韧性是通过夏比机记录的能量吸收来测量的,与试样的断裂变形密切相关。利用应变计和数据采集,冲击应变信号可提供有关冲击持续时间、最大应变值和曲线下面积的额外数据,从而加深对冲击问题的理解。高韧性材料具有强大的能量吸收能力和承受高冲击负荷的能力。虽然镁的重量比铝轻,但铝是一种更好的耐腐蚀材料,而且强度更高,因此更适合用作汽车结构部件。拉伸试验通常用于研究材料的机械性能。汽车行业要求材料具有良好的耐撞性。本研究探讨了不同材料、冲击速度和材料厚度下吸收的能量与功率谱密度和应变-时间图下面积之间的关系。此外,还研究了应力-应变曲线与冲击应变信号之间的关系。在本研究中,通过参考冲击应变信号模式结果,使用仪器夏比试验研究了两种材料(铝 6061-T6 和镁 AM60)的行为。在实验中,应变计被安装在夏比机前锋上,并与数据采集系统相连。夏比冲击试样有三种不同的厚度:10 毫米、7.5 毫米和 5 毫米。冲击速度分别为 3.35 米/秒和 5.18 米/秒。结果显示,吸收的能量与应变能之间存在相关性。获得的应变能与吸收的能量成正比。与镁 AM60 相比,铝 6061-T6 的能量吸收、最大应变和功率谱密度图下的应变能最高。夏比试验的应变信号与拉伸试验的应力-应变曲线之间的关系显示了一个重要发现,即通过信号模式和曲线可以确定材料的变形和断裂点。因此,应变信号模式可用于预测材料行为。
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引用次数: 0
The Verification of Sea Level Anomaly (SLA) Versus Tide Gauge for Geoid Modelling 海平面异常(SLA)与潮汐测量仪在大地水准面建模中的对比验证
Pub Date : 2024-04-03 DOI: 10.37934/araset.42.2.89103
N. M. Yazid, Ami Hassan Md Din, M. F. PA’SUYA, N. Abdullah, M. Kaamin, Muhammad Azraie, Abdul Kadir
The increasing long-term sea level rise is of particular interest and needs a significant investment in coastal protection procedures. The coastal sea level has been verified with tide gauges and well maintained with reliable accuracy of data since a few centuries ago. Satellite altimeter has been used for sea level study and increasingly for operational purposes. However, the precision of altimetry data in coastal areas is frequently eliminated by the geographically correlated orbit errors, which induce a regional inhomogeneous mission bias. This study presents an effort to verify sea level anomaly based on altimetry data with tide gauge stations as an early procedure to provide a good sea level anomaly data for mean sea surface, gravity anomaly, and geoid determination over Malaysian seas. The altimetry data is validated by comparing the sea level anomaly with ground truth data (tidal data) near the coastal area. A total of nine selected areas were chosen to represent the ground truth data. The findings found that the altimetry data over the South China Sea (Pulau Tioman, Geting, Cendering, Bintulu, and Kota Kinabalu) provided a good pattern, high correlation, and a minimum root mean square error (RMSE) value after the verification with tidal sea level anomaly data. However, it clearly shows that Tawau station over the Celebes Sea provides a poor pattern, poor correlation, and a high RMSE value with tidal sea level anomaly data. In conclusion, further enhancements are expected from the refined processing and filtering of altimetry data for the sea level study in the coastal zone.
长期的海平面上升尤其令人关注,需要对海岸保护程序进行大量投资。从几个世纪前开始,沿海海平面就已经通过验潮仪得到了验证,并以可靠的数据准 确性得到了很好的维护。卫星测高仪已用于海平面研究,并越来越多地用于业务目的。然而,沿海地区测高数据的精度经常被地理上相关的轨道误差所影响,这导致了区域性的不均匀任务偏差。本研究介绍了根据测高数据与验潮站一起验证海平面异常的工作,作为早期程序,为平均海面、重力异常和马来西亚海域大地水准面的确定提供良好的海平面异常数据。通过比较海平面异常与沿海地区附近的地面实况数据(潮汐数据),对测高数据进行验证。共选择了九个区域代表地面实况数据。研究结果发现,南海(刁曼岛、格亭、仙德林、民都鲁和亚庇)的测高数据在与潮汐海平面异常数据验证后提供了良好的模式、高相关性和最小均方根误差(RMSE)值。然而,这清楚地表明,西里伯斯海的斗湖站提供的模式较差,相关性较差,与潮汐海平面异常数据的均方根误差值较高。总之,通过对测高数据的精细处理和过滤,可望进一步提高沿海地区的海平面研究水平。
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引用次数: 0
The Topological Indices of the p-Subgroup Graph of Dihedral Groups 二面群 p 子群图的拓扑索引
Pub Date : 2024-04-03 DOI: 10.37934/araset.42.2.145154
Fozaiyah Ayed Alhubairah, Nor Muhainiah, Mohd. Ali, Ahmad Erfanian
A topological index is a number generated from a molecular structure that signifies the molecule’s fundamental structural characteristics. This correlation between the index and various physical attributes is based on an algebraic quantity related to the chemical structure. Many topological indices, such as the Wiener index, first and second Zagreb indices, can be employed to determine various properties, including chemical activity, thermodynamic properties, physicochemical activity, and biological activity. Meanwhile, the p-subgroup graph of a group G is defined as a graph whose vertices represent the elements of the group, and two vertices are adjacent if and only if the order of the subgroup is a prime power. The main objective of this paper is to establish the general formula for certain topological indices, specifically the Wiener index, first Zagreb index, and second Zagreb index for the -subgroup graph associated with dihedral groups.
拓扑指数是从分子结构中生成的一个数字,表示分子的基本结构特征。拓扑指数与各种物理属性之间的关联基于与化学结构相关的代数量。许多拓扑指数,如维纳指数、第一和第二萨格勒布指数,可用于确定各种特性,包括化学活性、热力学特性、物理化学活性和生物活性。同时,群 G 的 p 子群图被定义为其顶点代表群元素的图,当且仅当子群的阶为质幂时,两个顶点相邻。本文的主要目的是建立某些拓扑指数的一般公式,特别是与二面群相关的-子群图的维纳指数、第一萨格勒布指数和第二萨格勒布指数。
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引用次数: 0
Numerical Analysis of Shoreline Changes along the Coast Batu Hiu-Bojong Salawe, Pangandaran Regency, West Java Province, Indonesia 印度尼西亚西爪哇省彭甘达兰县 Batu Hiu-Bojong Salawe 海岸线变化的数值分析
Pub Date : 2024-04-03 DOI: 10.37934/araset.42.2.5871
Subiyanto Subiyanto, Yuyun Hidayat, Saeful Anwari, Mustafa Mamat, Mohammad Fadli Ahmad, Novan Tofany, Sudradjat Supian
Shoreline change poses a significant challenge in coastal regions, leading to issues such as abrasion, soil erosion, and the loss of valuable land. This problem is prevalent in various areas of Pangandaran, particularly in the Batu Hiu-Bojong Salawe coastal region of Pangandaran Regency, West Java, Indonesia. The objective of this study is to analyse and quantify the distance and rate of shoreline changes occurring over a decade (2010-2019) in the Batu Hiu-Bojong Salawe coastal area. Utilizing ArcMap software and the Digital Shoreline Analysis System (DSAS), this research aims to provide insights into the coastal dynamics, drawing analytical points from comparable studies for a comprehensive understanding. Batu Hiu's western coast faces substantial erosion (29.70m, LLR 3.10 m/year, EPR 3.22 m/year), while the east experiences accretion (52.76m, LLR/EPR 5.49 m/year, 5.72 m/year). Coastal dynamics, influenced by rocky structures, lead to sedimentation and erosion. Bojong Salawe Beach sees noteworthy accretion (83.01m, LRR/EPR 8.88 m/year, 9.00 m/year), with a maximum at transect 85 (134.5m, LRR 14.27 m/year, EPR 14.58 m/year). Erosion at transects 104 and 107 averages 30.47m, with LLR/EPR rates of 3.41 m/year and 3.3 m/year. The Cijulang River estuary contributes to coastal stability, resulting in significant accretion. This information is vital for coastal management, offering insights to address erosion and accretion impacts in Batu Hiu and Bojong Salawe coastal areas.
海岸线变化给沿海地区带来了巨大挑战,导致磨损、土壤侵蚀和宝贵土地的丧失等问题。这一问题在邦甘达兰的多个地区普遍存在,尤其是在印度尼西亚西爪哇邦甘达兰县的 Batu Hiu-Bojong Salawe 沿海地区。本研究的目的是分析和量化十年(2010-2019 年)间 Batu Hiu-Bojong Salawe 沿海地区海岸线变化的距离和速度。本研究利用 ArcMap 软件和数字海岸线分析系统 (DSAS),旨在深入了解海岸动态,并从可比研究中汲取分析要点,以获得全面的认识。峇株晓西部海岸面临严重侵蚀(29.70 米,LLR 3.10 米/年,EPR 3.22 米/年),而东部则经历了增生(52.76 米,LLR/EPR 5.49 米/年,5.72 米/年)。受岩石结构的影响,海岸动态导致了沉积和侵蚀。Bojong Salawe 海滩的沉积显著(83.01 米,LRR/EPR 8.88 米/年,9.00 米/年),最大值出现在 85 号断面(134.5 米,LRR 14.27 米/年,EPR 14.58 米/年)。104 和 107 断面的平均侵蚀长度为 30.47 米,LLR/EPR 速率分别为 3.41 米/年和 3.3 米/年。慈觉朗河口对海岸的稳定起到了重要作用,导致了大量的增生。这些信息对沿海管理至关重要,可为解决峇都晓和博宗萨拉威沿海地区的侵蚀和增生影响提供见解。
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引用次数: 0
Video Forgery Detection using an Improved BAT with Stacked Auto Encoder Model 使用带堆叠自动编码器模型的改进 BAT 进行视频伪造检测
Pub Date : 2024-04-03 DOI: 10.37934/araset.42.2.175187
Girish Nagaraj, Nandini Channegowda
There are various public and private places such as banks, roads, offices, and homes equipped with cameras for surveillance. The surveillance videos are consisting of a precious source of information related to critical application scopes. The main problem is to aid powerful and accessible software that changes the content present in the video for the forgery creation of a video. The forgery involves region duplication that has a common video tampering. The existing techniques are utilized to detect video tampering from the forged videos that showed complexity in the background. Thus, it is important to overcome the problem of forgery detection in the research. The Spatio-temporal averaging model is carried out for the collection of a video sequence for obtaining the background information. This can detect the moving objects effectively for forgery detection. Next, the ResNet 18 is used for extraction of the feature vectors, and the discriminative feature vectors were reduced and improved the training time and accuracy. The Single Auto Encoder (SAE) is not able to reduce the input features' dimensionality. Thus, the SAE has used 3 encoders stacked on the top for detecting the forgery. It is based on the sequence of videos. In comparison to the existing models, the proposed approach outperformed them with accuracy rates of 98.6%, sensitivity rates of 98.60%, specificity rates of 98.47%, MCC rates of 97.29%, and precision rates of 99.93%.
银行、道路、办公室和家庭等各种公共和私人场所都装有监控摄像头。监控视频是与关键应用范围相关的宝贵信息来源。目前的主要问题是如何借助功能强大且易于使用的软件来改变视频中的内容,从而伪造视频。伪造涉及区域复制,这是一种常见的视频篡改行为。现有技术可用于从伪造视频中检测视频篡改,伪造视频的背景显示出复杂性。因此,在研究中克服伪造检测问题非常重要。时空平均模型用于收集视频序列以获取背景信息。这可以有效地检测出移动物体,从而进行伪造检测。接着,使用 ResNet 18 提取特征向量,减少了辨别特征向量,提高了训练时间和准确率。单自动编码器(SAE)无法降低输入特征的维数。因此,SAE 使用了 3 个堆叠在顶部的编码器来检测伪造。它基于视频序列。与现有模型相比,拟议方法的准确率为 98.6%,灵敏度为 98.60%,特异性为 98.47%,MCC 为 97.29%,精确率为 99.93%,均优于现有模型。
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引用次数: 0
Android-Based Patient Healthcare Tracker with Appointment Booking Capability 基于安卓系统的病人医疗追踪器,具有预约功能
Pub Date : 2024-04-03 DOI: 10.37934/araset.42.2.122132
Suhasshini Ramalingam, Fakrulradzi Idris, Norlezah Hashim, Eliyana Ruslan, Muhammad Syahrir Johal, Muhamad Firdaus
Managing the healthcare system presents various challenges that healthcare professionals must be well-prepared to address. Additionally, in times of pandemics, reducing human contact in crowded locations like clinics becomes crucial. Currently, many clinic departments spend a considerable amount of time manually entering and searching for patient data within their systems. This process is not only time-consuming but also notably ineffective. Hence, the development of a mobile application has become an imperative solution to overcome these issues. This project has been implemented using Android Studio with the primary aim of tracking patient health and efficiently recording patient data. This, enables doctors to effectively monitor their patients. The developed application serves as a two-way communication bridge between patients and healthcare departments. Patients can effortlessly schedule appointments with their doctors for consultations and update their health status through the app. Simultaneously, doctors can conveniently issue prescriptions via the same application. We conducted a survey involving 120 participants, comprising 20 doctors and 100 patients. The results unequivocally demonstrate that the designed application has significantly improved healthcare management and fostered efficient communication between doctors and patients.
医疗保健系统的管理面临着各种挑战,医疗保健专业人员必须做好充分准备来应对这些挑战。此外,在大流行病时期,减少诊所等拥挤场所的人员接触变得至关重要。目前,许多诊所部门需要花费大量时间在系统中手动输入和搜索病人数据。这一过程不仅耗时,而且效果明显不佳。因此,开发移动应用程序已成为解决这些问题的当务之急。本项目使用 Android Studio 实现,主要目的是跟踪病人健康状况并有效记录病人数据。这样,医生就能对病人进行有效监控。所开发的应用程序是病人和医疗部门之间的双向沟通桥梁。患者可以轻松地与医生预约会诊时间,并通过应用程序更新自己的健康状况。同时,医生也可以通过同一应用程序方便地开具处方。我们对 120 名参与者进行了调查,其中包括 20 名医生和 100 名患者。结果明确显示,所设计的应用程序极大地改善了医疗保健管理,促进了医生和患者之间的有效沟通。
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引用次数: 0
Privacy Preserving Image Retrieval Using Multi-Key Random Projection Encryption and Machine Learning Decryption 利用多密钥随机投影加密和机器学习解密实现隐私保护图像检索
Pub Date : 2024-04-03 DOI: 10.37934/araset.42.2.155174
Alaa Mahmoud Ibrahim, Mohamed Farouk, M. Fakhr
Homomorphic Encryption (HE), Multiparty Computation (MPC), Differential Privacy (DP) and Random Projection (RP) have been used in privacy preserving computing. The main benefit of the random projection approach is the lighter time and space complexity compared to the other available techniques. However, RP is typically used in a symmetric encryption mode, with one random projection matrix single key, making it vulnerable to attacks. An enhanced multi-key RP approach is proposed in this paper where a set of N random matrices are used as projection keys. Moreover, a randomly chosen one is used for each new query. Machine learning models are trained to perform specific vector operations on the randomly projected vectors and produce another randomly projected results vector. Another machine learning model is trained to decrypt the final result at the user’s side. The proposed system is shown to offer privacy against known plaintext and cipher-only attacks while preserving Euclidean distance calculations accuracy in the randomly projected domain which are demonstrated on the COREL 1K image retrieval task. Results show that the cyphertext space took sixteen times less than the ciphertext done with homomorphic encryption, and the computation of distance using random projection was 8 times faster than homomorphic encryption distance calculation.
同态加密(HE)、多方计算(MPC)、差分隐私(DP)和随机投影(RP)已被用于隐私保护计算。与其他可用技术相比,随机投影方法的主要优点是时间和空间复杂度较低。然而,RP 通常用于对称加密模式,只有一个随机投影矩阵和一个密钥,因此容易受到攻击。本文提出了一种增强的多密钥 RP 方法,使用一组 N 个随机矩阵作为投影密钥。此外,每次新查询都会使用一个随机选择的矩阵。对机器学习模型进行训练,以便对随机投影向量执行特定的向量运算,并生成另一个随机投影结果向量。另一个机器学习模型经过训练,可在用户端解密最终结果。研究表明,所提出的系统能抵御已知明文攻击和纯密码攻击,同时保持随机投影域的欧氏距离计算精度,这在 COREL 1K 图像检索任务中得到了验证。结果表明,明文空间所需的时间是同态加密所需的明文空间的 16 倍,使用随机投影计算距离的速度是同态加密距离计算速度的 8 倍。
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引用次数: 0
A Novel Single Parent Mating Technique in Genetic Algorithm for Discrete – Time System Identification 离散时间系统识别遗传算法中的新型单亲交配技术
Pub Date : 2024-04-03 DOI: 10.37934/araset.42.2.4957
Farah Ayiesya Zainuddin, Md Fahmi Abd Samad, Hishamuddin Jamaluddin, Abul K. M. Azad
System identification is concerned with the construction of a mathematical model based on given input and output data to represent the dynamical behaviour of a system. As a step-in system identification, model structure selection is a step where a model perceived as adequate system representation is selected. A typical rule is that the model must have a good balance between parsimony and accuracy in estimating a dynamic system. As a popular search method, genetic algorithm (GA) is used for selecting a model structure. However, the optimality of the final model depends much on the optimality of GA. This paper introduces a novel mating technique in GA based on the chromosome structure of the parents such that a single parent is sufficient in achieving mating that demonstrates high exploration capability. In investigating this, four systems of linear and nonlinear classes were simulated to generate discrete-time sets of data i.e. later used for identification. The outcome shows that GA incorporated with the mating technique within 10% - 20% of the population size is able to find optimal models quicker than the traditional GA.
系统识别是根据给定的输入和输出数据构建数学模型,以表示系统的动态行为。作为系统识别的一个步骤,模型结构选择是指选择一个能充分代表系统的模型。一个典型的规则是,在估计动态系统时,模型必须在简洁性和准确性之间取得良好的平衡。遗传算法(GA)是一种常用的搜索方法,用于选择模型结构。然而,最终模型的最优性在很大程度上取决于遗传算法的最优性。本文在遗传算法中引入了一种基于亲本染色体结构的新型交配技术,即只需一个亲本就能实现交配,从而体现出较高的探索能力。在研究过程中,模拟了四个线性和非线性系统,以生成离散时间数据集,即后来用于识别的数据集。结果表明,在种群规模的 10%-20%范围内采用交配技术的遗传算法能够比传统的遗传算法更快地找到最佳模型。
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引用次数: 0
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Journal of Advanced Research in Applied Sciences and Engineering Technology
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