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Design and Implementation of a Recommendation System for Buying Fresh Foods Online Based on Web Crawling 基于Web爬虫的生鲜食品在线购买推荐系统的设计与实现
IF 0.7 Q4 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2023-03-20 DOI: 10.20965/jaciii.2023.p0271
Tsung-Yin Ou, Yi-Chen Lee, Tien-Hsiang Chang, S. Lee, W. Tsai
As shopping patterns have gradually shifted from offline to online mode, and with recent lockdowns during the coronavirus disease 2019 (COVID-19) pandemic restricting foreign trade and accelerating the growth of the domestic economy, digital transformation has become a major strategy for many retailers to support and expand their businesses. With the pandemic becoming a turning point, the business of major e-commerce companies in Taiwan in the retail of dry goods has grown significantly, and it has driven the online sales of fresh products as well. In this era of fierce competition, it is especially important to find a way that enables consumers to quickly find ideal fresh products on multiple platforms, shortens the time for price comparison, and improves the efficiency of online shopping. This study uses the Python programming language to write a web crawler program that captures product information from fresh food e-commerce platforms, including product introduction, price, origin, and sales volume, and then defines the relevant status of the product, such as product popularity. Accordingly, through Chinese text segmentation and term-frequency calculation, it aims to classify the product names and introductions into frequently occurring words and use them as product-related labels. Finally, the program combines the product information processing results and product-related labels to construct an online fresh food recommendation system. The results of the proposed system show that it reduces the time and energy spent comparing prices. It can also guide consumers to browse products that may be of interest using relevant tags and increase consumption efficiency by helping them find the ideal item when shopping.
随着购物模式逐渐从线下转向线上,加上最近新冠肺炎疫情期间的封锁限制了对外贸易,加速了国内经济的增长,数字化转型已成为许多零售商支持和扩大业务的主要战略。随着疫情成为转折点,台湾主要电商在干货零售方面的业务大幅增长,也带动了生鲜产品的在线销售。在这个竞争激烈的时代,找到一种能让消费者在多个平台上快速找到理想生鲜产品、缩短比价时间、提高网购效率的方式就显得尤为重要。本研究使用Python编程语言编写网络爬虫程序,抓取生鲜电商平台上的产品信息,包括产品介绍、价格、产地、销量等,然后定义产品的相关状态,如产品受欢迎程度等。因此,通过中文文本切分和词频计算,将产品名称和产品介绍分类为频繁出现的词,作为产品相关标签。最后,将产品信息处理结果与产品相关标签相结合,构建在线生鲜食品推荐系统。结果表明,该系统减少了比较价格所花费的时间和精力。它还可以使用相关标签引导消费者浏览可能感兴趣的产品,并通过帮助消费者在购物时找到理想的商品来提高消费效率。
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引用次数: 0
Relations Among Curriculum Governance Model, Teacher Work Settings, and Teacher Perceptions on the Professional Learning Community 课程治理模式、教师工作设置与教师对专业学习共同体认知的关系
IF 0.7 Q4 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2023-03-20 DOI: 10.20965/jaciii.2023.p0215
Hsiao-Chi Juan
Following the education reform occurring worldwide, the professional learning community has been seen as a crucial factor in changing the teaching practice on site. However, empirical research has failed to deal with multicollinearity under a social context. This study examines the effect of curriculum development policy and leadership on the professional learning community of teachers. The regularized linear regression method is used to identify the precise effect on the professional learning community in two ways, i.e., ridge and least absolute shrinkage and selection operator regressions. The results show that the main variance comes from teacher actions at the school level and that the collaborative sense of teachers has the most significant effect. This study contributes to existing knowledge on the professional learning of teachers by providing distinguished view of governance model.
随着世界范围内的教育改革,专业学习社区已被视为改变现场教学实践的关键因素。然而,实证研究未能处理社会背景下的多重共线性。本研究探讨课程发展政策与领导对教师专业学习社群的影响。采用正则化线性回归方法,通过岭最小绝对收缩和选择算子回归两种方法来识别对专业学习群体的精确影响。结果表明,学校层面的差异主要来自教师的行为,而教师的合作意识对其影响最为显著。本研究通过对治理模式的独到见解,对现有关于教师专业学习的知识有所贡献。
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引用次数: 0
Synchronization of Hyperchaotic Systems Based on Intermittent Control and its Application in Secure Communication 基于间歇控制的超混沌系统同步及其在保密通信中的应用
IF 0.7 Q4 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2023-03-20 DOI: 10.20965/jaciii.2023.p0292
Jianbin He, W. Qiu, Jianping Cai
The synchronization of master-slave hyperchaotic systems is investigated by intermittent control and proved by the Lyapunov stable theory. Meanwhile, a new secure communication scheme is designed for the continuous and digital information. The encrypted information is transmitted to receiver through the intermittent controller, which reduces the disturbance to the synchronization of master-slave systems and improves the security and reliability of secure communication. Before transmitting to the receiver, the continuous signal is firstly modulated and masked by the chaotic signals. Furthermore, an encryption algorithm for the digital information of color image is proposed by the pseudo-random sequences of Chen hyperchaotic system, and then the encrypted image is modulated and masked by the variables of the master system. The original image can be decrypted successfully at the receiving end after the slave system is synchronized with the master system. Finally, the feasibility and effectiveness of this scheme are verified by simulation experiments. In addition, the security analysis of the image encryption algorithm is also discussed, such as key sensitivity, correlation coefficient, NIST test, and return map.
采用间歇控制方法研究了主从超混沌系统的同步问题,并用李雅普诺夫稳定理论进行了证明。同时,针对连续信息和数字信息,设计了一种新的安全通信方案。加密后的信息通过间歇控制器传输到接收端,减少了对主从系统同步的干扰,提高了保密通信的安全性和可靠性。在发送到接收机之前,连续信号首先被混沌信号调制和屏蔽。在此基础上,提出了一种利用陈超混沌系统的伪随机序列对彩色图像数字信息进行加密的算法,并利用主系统的变量对加密后的图像进行调制和掩码。待从系统与主系统同步后,接收端才能成功解密原始镜像。最后,通过仿真实验验证了该方案的可行性和有效性。此外,还讨论了图像加密算法的安全性分析,如密钥灵敏度、相关系数、NIST测试、返回映射等。
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引用次数: 3
Digital Inclusive Finance and Industrial Structure Upgrade - Based on Nonlinear Relationship Perspective 数字普惠金融与产业结构升级——基于非线性关系视角
IF 0.7 Q4 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2023-03-20 DOI: 10.20965/jaciii.2023.p0251
Shuping Lin, Wenhui Ma
Compared with traditional finance, digital inclusive finance involves particular policies, different targeting, and wider coverage, plays a positive role in promoting the development of the real economy, and upgrades to industrial facilities. Based on the panel data of 288 prefecture-level cities in China from 2011 to 2019, in this study, we empirically examined the impact of digital inclusive finance on upgrades to industrial structures. The experimental results showed a “U”-shaped nonlinear relationship between the development of digital inclusive finance and the upgrades to industrial structure. In particular, this conclusion remained valid after citing instrumental variables, replacing core explanatory variables, and performing other robustness tests. Furthermore, we used the threshold model to test the influence of digital inclusive finance on industrial structure upgrade, and observed a double threshold effect based on digital inclusive finance and local levels of economic development. Therefore, in the dynamic transformation towards digital inclusive finance and continuing economic development, the role of digital inclusive finance in promoting industrial structure upgrade continues to strengthen.
与传统金融相比,数字普惠金融政策特定、目标不同、覆盖范围更广,在促进实体经济发展、产业设施升级等方面发挥着积极作用。本文基于2011 - 2019年中国288个地级市的面板数据,实证检验了数字普惠金融对产业结构升级的影响。实验结果表明,数字普惠金融发展与产业结构升级呈“U”型非线性关系。特别是,在引用工具变量、替换核心解释变量和进行其他稳健性检验后,这一结论仍然有效。通过阈值模型检验数字普惠金融对产业结构升级的影响,发现基于数字普惠金融和地方经济发展水平的双阈值效应。因此,在向数字普惠金融动态转型和经济持续发展的背景下,数字普惠金融促进产业结构升级的作用不断增强。
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引用次数: 2
Underdetermined Blind Source Separation Method for Speech Signals Based on SOM-DPC and Compressed Sensing 基于SOM-DPC和压缩感知的欠定盲源分离方法
IF 0.7 Q4 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2023-03-20 DOI: 10.20965/jaciii.2023.p0259
Tao He, Hui Li, Zhe Cheng
Underdetermined blind source separation has received increasing attention in recent years as an effective method for speech-signal processing. Hence, a self-organizing mapping-density peak clustering and compressed sensing approach, which is a two-step approach, is proposed herein to improve the accuracy of underdetermined blind source separation. The approach features the following two aspects: (1) A mixing matrix estimation method based on self-organizing mapping and density peak clustering, which can intuitively determine the number of source signals, remove outliers, and determine the column vector of the mixing matrix based on local density; (2) a compressed sensing-based source signal reconstruction method, which can exploit the sparsity of signals in the frequency domain and use a hierarchical coupling method to reconstruct the source signal accurately and efficiently under the premise that the prior knowledge of the signal is unknown. The proposed method does not require the number of source signals and exhibits excellent performance under different noise conditions. Theoretical analysis and experimental results demonstrate the effectiveness of the proposed method.
欠定盲源分离作为一种有效的语音信号处理方法近年来受到越来越多的关注。为此,为了提高欠定盲源分离的精度,提出了一种自组织映射-密度峰值聚类和压缩感知两步法。该方法具有以下两个方面的特点:(1)基于自组织映射和密度峰聚类的混合矩阵估计方法,可以直观地确定源信号的个数,去除离群值,并根据局部密度确定混合矩阵的列向量;(2)基于压缩感知的源信号重构方法,该方法利用信号在频域的稀疏性,在信号先验知识未知的前提下,采用层次耦合的方法精确高效地重构源信号。该方法不需要源信号的个数,在不同的噪声条件下均表现出优异的性能。理论分析和实验结果证明了该方法的有效性。
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引用次数: 0
Flexible Hyperspectral Anomaly Detection Using Weighted Nuclear Norm 基于加权核范数的柔性高光谱异常检测
IF 0.7 Q4 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2023-03-20 DOI: 10.20965/jaciii.2023.p0243
Lei Li, Yuemei Ren, Jinming Ma
It has been demonstrated that nuclear-norm-based low-rank representation is capable of modeling cluttered backgrounds in hyperspectral images (HSIs) for robust anomaly detection. However, minimizing the nuclear norm regularizes each singular value equally during rank reduction, which restricts the capacity and flexibility of modeling the major structures of the background. To address this problem, we propose detection of anomaly pixels in HSIs using the weighted nuclear norm, which can preserve the major singular values during rank reduction. We present a down-up sampling scheme to remove plausible anomaly pixels from the image as much as possible and learn a robust principal component analysis (PCA) background dictionary. From a dictionary, we develop a weighted nuclear-norm minimization model to represent the background with a low-rank coefficients matrix that can be effectively optimized using the standard alternating direction method of multipliers (ADMM). Due to the flexible modeling capacity using the weighted nuclear norm, anomaly pixels can be distinguished from the background with the reconstruction error. The experimental results on two real HSIs datasets demonstrate the effectiveness of the proposed method for anomaly detection.
研究表明,基于核范数的低秩表示能够对高光谱图像(hsi)中的杂乱背景进行建模,从而实现鲁棒异常检测。然而,核范数的最小化在降阶过程中对每个奇异值进行了等价的正则化,限制了背景主要结构建模的能力和灵活性。为了解决这个问题,我们提出了使用加权核范数检测hsi中的异常像素,该方法可以在降阶过程中保留主要的奇异值。我们提出了一种向下采样方案,以尽可能多地从图像中去除可能的异常像素,并学习一个鲁棒主成分分析(PCA)背景字典。从字典中,我们开发了一个加权核范数最小化模型,以低秩系数矩阵表示背景,该模型可以使用标准的乘法器交替方向方法(ADMM)进行有效优化。利用加权核范数灵活的建模能力,可以利用重建误差将异常像元与背景区分开。在两个真实hsi数据集上的实验结果证明了该方法的有效性。
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引用次数: 0
Drill-String Dynamics Model of Horizontal Coal Mine Wells Considering Intermittent Borehole Wall Contact 考虑间歇井壁接触的水平煤矿井钻柱动力学模型
IF 0.7 Q4 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2023-03-20 DOI: 10.20965/jaciii.2023.p0314
Jie Hu, Chengda Lu, Luefeng Chen, Quanxin Li, Wangnian Li, Hongchao Wei, Min Wu
During the drilling process, horizontal drill strings are often subject to stick-slip and back-pressure phenomena, which undermine drilling safety and affect drilling costs. However, most of the models proposed in the existing literature apply only to the analysis of the drill string motion state and are irrelevant to the rotary drilling process in coal mines. This paper presents a lumped-mass model of a drill string in a horizontal coal mine well. First, based on reasonable assumptions, the drill-string system was considered as four lumped-mass units. The lateral-torsional dynamics model was established based on the Lagrange dynamics theory. Further, combined with lateral movement, the intermittent contact between the drill string and borehole wall is described, and the friction torque due to this intermittent contact is calculated. Combined with the Karnopp bit-rock interaction, a drill-string dynamics model of horizontal wells that considers intermittent contact friction was developed. The proposed horizontal well drill-string model is more suitable for rotary drilling in a coal mine, and the nonlinear influencing factors are considered more comprehensive.
在钻井过程中,水平钻柱经常出现粘滑和背压现象,破坏钻井安全,影响钻井成本。然而,现有文献中提出的大多数模型仅适用于钻柱运动状态的分析,与煤矿旋转钻井过程无关。本文建立了水平井钻柱的集总质量模型。首先,基于合理的假设,将钻柱系统视为四个集总质量单元。基于拉格朗日动力学理论建立了横向-扭转动力学模型。此外,结合横向移动,描述了钻柱与井壁之间的间歇性接触,并计算了这种间歇性接触引起的摩擦扭矩。结合Karnopp钻头-岩石相互作用,建立了考虑间歇接触摩擦的水平井钻柱动力学模型。所建立的水平井钻柱模型更适合于煤矿旋转钻井,非线性影响因素考虑更全面。
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引用次数: 1
Mediating Role of Self-Esteem in Activity Participants' Passion for Exercise and Psychological Well-Being by Jogging in Fu Jen Catholic University 自尊对辅仁大学慢跑活动参与者运动热情与心理健康的中介作用
IF 0.7 Q4 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2023-03-20 DOI: 10.20965/jaciii.2023.p0154
Ming-Yun Kuo, Tsung-Kuo Tien-Liu, Wen-Lin Chang
This study investigated the relationship between passion for exercise, self-esteem, and well-being of participants of jogging activities. Purpose: The purpose of this study was to explore the relationship between passion for exercise, self-esteem, and psychological well-being of participants with different backgrounds and determine whether self-esteem affects the relationship between participants’ passion for exercise and well-being. Design/methodology/approach: A total of 344 valid questionnaires were employed, which included 164 males and 180 females of the jogging activities held by Fu Jen Catholic University. Descriptive statistics, independent sample t-test, one-way analysis of variance, Pearson product-difference correlation, regression, and other statistical methods were performed on the questionnaire to test the correlation between variables. Findings: (1) Different sexes had differences in obsessive passion, (2) different jogging groups had differences in obsessive passion, (3) different grades had differences in negative self-esteem, (4) different ages had harmonious passion, and there were differences in positive self-esteem, (5) the frequency of exercising with peers exhibited differences in psychological well-being and positive self-esteem, (6) there was a correlation between passion, psychological well-being, and self-esteem, and (7) positive self-esteem had a mediating effect on harmonious passion and psychological well-being. Conclusions: Participants of jogging activities are willing to spend time and effort in jogging activities, participate with an open and flexible attitude, and enjoy the process, thus improving positive self-evaluation and achieving a satisfied self-feel. Originality/value: There is less research on the relationship between passion and self-esteem in Taiwan. In addition, the authors not only found the relationship between passion, self-esteem, and psychological well-being from the data, but also found that self-esteem has a mediating effect on the relationship between passion and psychological well-being. Therefore, when organizing similar activities in the future, in addition to using attractive conditions that are more favorable to the participants, attention should be given to conditions that can enhance the self-worth of participants and increase the motivation and number of participants. In addition, participants performing activities with their peers will have more positive self-evaluations and feelings and happier and more satisfied.
本研究旨在探讨运动热情、自尊与慢跑运动参与者幸福感之间的关系。目的:本研究旨在探讨不同背景的被试运动热情、自尊和心理健康之间的关系,并确定自尊是否影响被试运动热情与健康之间的关系。设计/方法/方法:共使用有效问卷344份,其中男性164份,女性180份,来自天主教辅仁大学举办的慢跑活动。对问卷采用描述性统计、独立样本t检验、单因素方差分析、Pearson积差相关、回归等统计方法检验变量之间的相关性。发现:(1)不同性别的强迫激情存在差异,(2)不同慢跑组的强迫激情存在差异,(3)不同年级的消极自尊存在差异,(4)不同年龄的和谐激情存在差异,积极自尊存在差异,(5)同伴运动频率在心理健康和积极自尊方面存在差异,(6)激情、心理健康和自尊之间存在相关。(7)积极自尊对和谐激情和心理幸福感有中介作用。结论:慢跑活动参与者愿意在慢跑活动中花费时间和精力,以开放灵活的态度参与,并享受慢跑活动的过程,从而提高了积极的自我评价,获得了满意的自我感觉。原创性/价值:台湾对激情与自尊关系的研究较少。此外,作者不仅从数据中发现了激情、自尊和心理健康之间的关系,而且还发现自尊在激情和心理健康之间的关系中起中介作用。因此,今后在组织类似活动时,除了使用对参与者更有利的有吸引力的条件外,还应注意能够提升参与者自我价值的条件,增加参与者的积极性和人数。此外,与同伴一起进行活动的参与者会有更积极的自我评价和感觉,更快乐,更满意。
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引用次数: 0
Extracting Branch Factors of Scenarios from a Gaming Simulation Using Log-Cluster Analysis 利用日志聚类分析从游戏模拟中提取场景分支因子
IF 0.7 Q4 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2023-03-20 DOI: 10.20965/jaciii.2023.p0223
Akinobu Sakata, Takamasa Kikuchi, M. Kunigami, Atsushi Yoshikawa, M. Yamamura, T. Terano
This study proposes a method for analyzing gaming simulation results. The gaming simulation we focus on intends to be played by both human and computer agent players. To extract the knowledge of what and how they have played, we must determine what type of decision-making process leads to specific scenarios. Such simulation results, however, tend to have so many branch factors of scenarios that it is hard to understand by manual operations. To deal with the issues, we have developed a method for obtaining the branch factors of scenarios from gaming simulation results. We have demonstrated the effectiveness of the proposed method by identifying the branching factors of scenarios as follows. First, software agents were asked to play a gaming simulation for career education. Next, logs acquired through gaming were classified into multiple scenarios using machine learning techniques. Finally, decision-making factors separating the scenarios were identified using a decision tree.
本研究提出一种分析游戏仿真结果的方法。我们关注的游戏模拟旨在由人类和计算机代理玩家一起玩。为了了解他们是如何发挥作用的,我们必须确定哪种类型的决策过程会导致特定的场景。然而,这样的模拟结果往往有太多的场景分支因素,很难通过人工操作来理解。为了解决这一问题,我们开发了一种从游戏仿真结果中获取场景分支因子的方法。我们通过识别以下场景的分支因素证明了所提出方法的有效性。首先,软件代理被要求玩一个模拟游戏来进行职业教育。接下来,通过游戏获取的日志使用机器学习技术分类为多个场景。最后,使用决策树识别分离场景的决策因素。
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引用次数: 0
Fused Architecture with Enhanced Bag of Visual Words for Efficient Drowsiness Detection 融合建筑与增强袋的视觉词为有效的睡意检测
IF 0.7 Q4 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2023-03-20 DOI: 10.20965/jaciii.2023.p0182
V. Vijayan, K. Pushpalatha
Drowsy driving is more hazardous than reckless driving. This study concentrates on capturing the behavioral features of drowsiness from facial images of a driver. The methodology considers scale invariant feature transform matched with the fast library for approximate nearest neighbors for low-level drowsy features extraction. These features are fused with the high-level features extracted from the convolutional layers of a convolutional neural network (CNN). The convolution operation incorporates a model parallelization technique to increase the efficiency of the training and improve the feature identification. Further classification is performed by considering the occurrences of visual words using the softmax layers of the CNN. In contrast to existing state-of-the-art models which require a few seconds to detect drowsiness, this model detects drowsiness in milliseconds. With the model parallelization approach, this model exhibits a high accuracy rate of 83.8% relative to normal CNNs.
疲劳驾驶比鲁莽驾驶更危险。这项研究的重点是从司机的面部图像中捕捉困倦的行为特征。该方法考虑尺度不变特征变换与快速近似近邻库相匹配,进行低层次困倦特征提取。这些特征与从卷积神经网络(CNN)的卷积层提取的高级特征融合在一起。卷积运算结合了模型并行化技术,提高了训练效率,改善了特征识别。进一步的分类是通过使用CNN的softmax层来考虑视觉词的出现情况。现有的最先进的模型需要几秒钟来检测睡意,与之相反,这个模型在几毫秒内检测睡意。采用模型并行化方法,与普通cnn相比,该模型的准确率高达83.8%。
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引用次数: 0
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Journal of Advanced Computational Intelligence and Intelligent Informatics
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