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2022 International Conference on Intelligent Education and Intelligent Research (IEIR)最新文献

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Formative assessment for hybrid course in smart classroom: A cognitive presence perspective 智能课堂混合课程的形成性评价:认知在场视角
Pub Date : 2022-12-18 DOI: 10.1109/IEIR56323.2022.10050039
Yan Hu, Jian Shen, Rui Hou, Huan-Tian Huang
This study investigated formative assessment for hybrid course. The participants were 379 students who took the "college Physics" hybrid course in the fall of 2022 in a university of China. Most students were learning with face-to-face teaching, while a few students were learning remotely in smart classrooms. Data were collected from the cognitive presence survey within community of inquiry framework and online self-regulatory learning questionnaire during the middle term. The result indicated that remote students’ cognitive presence were lower than students with face-to-face teaching in the smart classroom, and there were strong positive correlation between students’ online self-regulatory learning and cognitive presence. It was suggested that cognitive presence were measured again at the end of the semester to examine whether the cognitive presence of remote students in the final semester is better than that of the middle semester after intervention.
本研究探讨混合课程的形成性评价。参与者是379名参加了2022年秋季中国一所大学“大学物理”混合课程的学生。大多数学生都是面对面学习,而少数学生则在智能教室中远程学习。数据收集于探究框架社区内的认知存在调查和期中在线自律学习问卷。结果表明,在智能课堂中,远程学生的认知在场低于面对面教学的学生,学生的在线自我调节学习与认知在场之间存在较强的正相关关系。建议在学期结束时再次测量认知存在,以检验干预后远程学生在期末的认知存在是否优于中期。
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引用次数: 0
Smart Contract Vulnerability Detection for Educational Blockchain Based on Graph Neural Networks 基于图神经网络的教育区块链智能合约漏洞检测
Pub Date : 2022-12-18 DOI: 10.1109/IEIR56323.2022.10050059
Zhifeng Wang, Wanxuan Wu, Chunyan Zeng, Jialong Yao, Yang Yang, Hongmin Xu
With the development of blockchain technology, more and more attention has been paid to the intersection of blockchain and education, and various educational evaluation systems and E-learning systems are developed based on blockchain technology. Among them, Ethereum smart contract is favored by developers for its “event-triggered” mechanism for building education intelligent trading systems and intelligent learning platforms. However, due to the immutability of blockchain, published smart contracts cannot be modified, so problematic contracts cannot be fixed by modifying the code in the educational blockchain. In recent years, security incidents due to smart contract vulnerabilities have caused huge property losses, so the detection of smart contract vulnerabilities in educational blockchain has become a great challenge. To solve this problem, this paper proposes a graph neural network (GNN) based vulnerability detection for smart contracts in educational blockchains. Firstly, the bytecodes are decompiled to get the opcode. Secondly, the basic blocks are divided, and the edges between the basic blocks according to the opcode execution logic are added. Then, the control flow graphs (CFG) are built. Finally, we designed a GNN-based model for vulnerability detection. The experimental results show that the proposed method is effective for the vulnerability detection of smart contracts. Compared with the traditional approaches, it can get good results with fewer layers of the GCN model, which shows that the contract bytecode and GCN model are efficient in vulnerability detection.
随着区块链技术的发展,区块链与教育的交叉越来越受到人们的关注,各种基于区块链技术的教育评价系统和E-learning系统都被开发出来。其中,以太坊智能合约以其“事件触发”机制,构建教育智能交易系统和智能学习平台,备受开发者青睐。然而,由于区块链的不变性,发布的智能合约无法修改,因此无法通过修改教育区块链中的代码来修复有问题的合约。近年来,由于智能合约漏洞引发的安全事件造成了巨大的财产损失,因此教育区块链中智能合约漏洞的检测成为一个巨大的挑战。为了解决这一问题,本文提出了一种基于图神经网络(GNN)的教育区块链智能合约漏洞检测方法。首先,反编译字节码得到操作码。其次,对基本块进行划分,并根据操作码执行逻辑添加基本块之间的边;然后,建立了控制流程图(CFG)。最后,我们设计了一个基于gnn的漏洞检测模型。实验结果表明,该方法对智能合约漏洞检测是有效的。与传统方法相比,采用较少的GCN模型层数可以获得较好的检测结果,说明契约字节码和GCN模型在漏洞检测方面是有效的。
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引用次数: 5
IEIR 2022 Cover Page IEIR 2022封面
Pub Date : 2022-12-18 DOI: 10.1109/ieir56323.2022.10050040
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引用次数: 0
An Intelligent Tutoring System for Math Word Problem Solving with Tutorial Solution Generation 基于导导式解生成的数学应用题智能辅导系统
Pub Date : 2022-12-18 DOI: 10.1109/IEIR56323.2022.10050083
Shishun Wu, Xuebi Xu, Rui Liu, Guanghua Liang, Hao Meng, Bin He
To provide the step by step tutoring service like a human tutor, an intelligent tutoring system (ITS) for math word problem solving (MathITS) is proposed in this paper. The proposed MathITS has an ability of automatically generate tutorial solutions for any user input problems and thus could be widely used in after-class tutoring. An improved math word problem solver is applied to generate the tutorial solution, which transforms expression solutions into logic sequences of arithmetic operations with illustrating texts. In stage of adaptive tutoring, hints and suggestions are generated and launched to students rather giving them explicit solutions. Finally, an evaluation module is provided which gives immediate feedback on the evaluation of the whole process of multi-turn tutoring interaction. A pioneer experiment is conducted and the results demonstrate the efficiency of the proposed system.
为了提供像人类导师一样的分步辅导服务,本文提出了一个数学应用题解题智能辅导系统(MathITS)。所提出的MathITS具有针对任何用户输入问题自动生成辅导解的能力,可广泛应用于课后辅导。一个改进的数学单词问题解决程序被应用于生成教程解决方案,它将表达式解决方案转换为带有插图文本的算术运算逻辑序列。在适应性辅导阶段,提示和建议的产生和推出给学生,而不是给他们明确的解决方案。最后,提供了评价模块,对多回合教学互动全过程的评价进行即时反馈。进行了初步实验,结果证明了该系统的有效性。
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引用次数: 0
Rapid Screening of Children With Autism Spectrum Disorders Through Face Image Classification 通过人脸图像分类快速筛选自闭症谱系障碍儿童
Pub Date : 2022-12-18 DOI: 10.1109/IEIR56323.2022.10050070
Yuyu Zheng, Leyuan Liu
Autism spectrum disorders (ASD) impact the development of children’s language, motor, and expression abilities, causing great adverse effects on children’s growth. The incidence of autism screening is still quite poor, nevertheless, due to the traditional method’s time and financial requirements for child guardians. If symptoms of autism are detected early, children with autism usually return to normal development after effective medical intervention. Furthermore, the likelihood of accurately identifying children with autism grows if deep learning is used to recognize face images of autistic children. In this study, the dataset of autistic children’s faces in the Kaggle database [1] is selected to classify the typically developing children and autistic children through the face recognition model. On model selection, VGG19 [1], VGG16 [2], ResNet18 [3], ResNet101 [4], and DenseNet161 [5] are candidates. After training, among the five models, ResNet101 and DenseNet161 have better performance, and the recall rate of ResNet101 is higher in these two networks.
自闭症谱系障碍(Autism spectrum disorder, ASD)影响儿童语言、运动和表达能力的发展,对儿童的成长造成极大的不良影响。然而,由于传统方法对儿童监护人的时间和经济要求,自闭症筛查的发生率仍然很低。如果早期发现自闭症的症状,自闭症儿童通常会在有效的医疗干预后恢复正常发育。此外,如果使用深度学习来识别自闭症儿童的面部图像,准确识别自闭症儿童的可能性就会增加。本研究选择Kaggle数据库[1]中的自闭症儿童面部数据集,通过人脸识别模型对发育典型儿童和自闭症儿童进行分类。在模型选择上,VGG19[1]、VGG16[2]、ResNet18[3]、ResNet101[4]、DenseNet161[5]是候选模型。经过训练,在5个模型中,ResNet101和DenseNet161的性能更好,ResNet101在这两个网络中的召回率更高。
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引用次数: 1
Research on Intelligent Scoring Method of Standardized Chinese Character Writing 标准化汉字书写智能评分方法研究
Pub Date : 2022-12-18 DOI: 10.1109/IEIR56323.2022.10050043
Jiangbo Shu, Shuaicheng Lu, Jianran Li, Jingli Zeng
Under the current educational background of “double subtraction in order to effectively improve students’ ability to write standardized Chinese characters and solve the problem of shortage of teachers for writing education, an intelligent scoring method for standardized Chinese character writing based on template Chinese character eigenvalue similarity is proposed. The method consists of three steps: firstly, a Chinese character evaluation classification model is established based on the eigenvalue information of handwritten Chinese character samples and expert pre-evaluation results, and the standard interval of Chinese character eigenvalue is determined based on the classification results of the model. Secondly, a multiple linear regression model is established based on the scores of individual writing rules of Chinese characters and the overall scores of experts on handwritten Chinese character samples. Through the model, the influence weight of each writing rule on the evaluation of whole character writing is determined. Thirdly, combining the similarity of eigenvalues, the difference of eigenvalues and the influence weight ofwriting rules, we can score the handwritten Chinese characters, include overall score and quantifiable details.
在当前“双减法”的教育背景下,为了有效提高学生标准化汉字写作能力,解决写作教育师资短缺的问题,提出了一种基于模板汉字特征值相似度的标准化汉字写作智能评分方法。该方法分为三个步骤:首先,基于手写汉字样本的特征值信息和专家预评价结果建立汉字评价分类模型,并根据模型的分类结果确定汉字特征值的标准区间;其次,基于汉字书写规则单项得分和专家手写体汉字样本总分,建立多元线性回归模型;通过该模型,确定了各书写规则对整体汉字书写评价的影响权重。第三,结合特征值的相似性、特征值的差异性和书写规则的影响权重,对手写汉字进行评分,包括总分和可量化的细节。
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引用次数: 0
An Efficient Model For Student Behavior Recognition in Classroom 学生课堂行为识别的有效模式
Pub Date : 2022-12-18 DOI: 10.1109/IEIR56323.2022.10050077
Hongye Zhu, Jinhua Zhao, L. Niu
AI and big data analysis for student classroom behavior recognition can be used as auxiliary means to improve teaching quality. Recognition in classroom scenarios suffers from issues such as tiny targets and complex environmental interference. To tackle these problems, an efficient model based on YOLOv4-tiny is proposed in this paper. Specifically, we design a new module named ResBlock-S to reduce the floating point operations (FLOPs) of the model to improve the speed. Then, the introduction of the Convolutional Block Attention Module (CBAM) mechanism to obtain extra local information of images during the training process, which can ensure the recognition accuracy. As most available public datasets are not applicable to this work, we construct a classroom behavior dataset. Experiments were conducted on the public dataset and our self-built dataset to verify the performance of our model in general scenarios and classroom scenarios, respectively. Compared with YOLOv4-tiny and other lightweight CNN models such as MobileNetv2, MobileNetv3 and ShuffleNetv2, the mean Average Precision (mAP) of our approach on the self-built dataset is higher and up to 89.9%. Additionally, the detection speed of our approach is faster than the aforementioned methods, which is up to 167 fps.
人工智能和大数据分析对学生课堂行为的识别可以作为提高教学质量的辅助手段。课堂场景中的识别存在目标微小、环境干扰复杂等问题。针对这些问题,本文提出了一种基于YOLOv4-tiny的高效模型。具体而言,我们设计了一个名为ResBlock-S的新模块,以减少模型的浮点运算(FLOPs),从而提高速度。然后,引入卷积块注意模块(CBAM)机制,在训练过程中获取图像的额外局部信息,保证识别的准确性;由于大多数可用的公共数据集不适用于这项工作,我们构建了一个课堂行为数据集。在公共数据集和自建数据集上分别进行了实验,验证了我们的模型在一般场景和课堂场景下的性能。与YOLOv4-tiny和其他轻量级CNN模型(如MobileNetv2、MobileNetv3和ShuffleNetv2)相比,我们的方法在自建数据集上的平均平均精度(mAP)更高,达到89.9%。此外,我们的方法的检测速度比前面提到的方法更快,高达167 fps。
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引用次数: 1
Recognizing boundaries of online professional learning communities in an automated discourse analysis approach 用自动话语分析方法识别在线专业学习社区的边界
Pub Date : 2022-12-18 DOI: 10.1109/IEIR56323.2022.10050051
Si Zhang, Y. Zhang, Xinyue He, Tongyu Guo, Yiyao Wang
Recognizing boundaries of online professional learning communities can help to provide teachers with a meaningful online learning environment that improves their training performance. This study proposed an automated discourse analysis approach for recognizing boundaries of the online learning communities, that combines both Topic Modelling approach (Latent Dirichlet Allocation) and Social Network Analysis. The study examined online discourse data of 1843 teachers participating in an online training program. The findings revealed that teachers mainly responded to others’ posts and the pattern of teachers’ response could be mainly divided into four types. The semantic network formed by discourse unit was high-density with low average network distance and high degree centrality, and the cohesion parameter of the semantic network was relatively stable during the whole process of online discourse. The findings of the study also can provide insights into creating online learning communities and teacher education.
认识到在线专业学习社区的边界有助于为教师提供有意义的在线学习环境,从而提高他们的培训绩效。本研究提出了一种在线学习社区边界识别的自动话语分析方法,该方法将话题建模方法(Latent Dirichlet Allocation)和社会网络分析相结合。该研究调查了参加在线培训项目的1843名教师的在线话语数据。研究发现,教师主要对他人的帖子进行回应,教师的回应模式主要分为四种类型。话语单元形成的语义网络密度大,平均网络距离低,中心性高,在整个网络话语过程中,语义网络的衔接参数相对稳定。研究结果还可以为创建在线学习社区和教师教育提供见解。
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引用次数: 0
Scientific Documents Collection and Summarization for Survey Writing 科学文献的收集和总结为调查写作
Pub Date : 2022-12-18 DOI: 10.1109/IEIR56323.2022.10050078
Fan Luo, Xinguo Yu
In the process of survey writing, searching for scientific documents related to a topic and fully understanding these documents are two critical but time-consuming steps. Automatic paper collection and summarization technologies can help to improve work efficiency and work quality. Therefore, this work-in-progress paper integrates the citation recommendation model, the structured content extraction model, and the long scientific documents summarization model to propose an automatic scientific document collection and summarization system. This system can extract topics from single or multiple paragraphs, collect relevant papers, and generate a summary table for the collected papers to benefit survey writing.
在调查写作的过程中,查找与主题相关的科学文献和充分理解这些文献是两个关键但耗时的步骤。自动纸张收集和汇总技术有助于提高工作效率和工作质量。因此,本文将引文推荐模型、结构化内容抽取模型和长篇科学文献摘要模型集成在一起,提出了一种科学文献自动采集与摘要系统。该系统可以从单个或多个段落中提取主题,收集相关论文,并为收集的论文生成汇总表,以便于调查写作。
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引用次数: 0
A Comparative Analysis of Math Word Problem Solving on Characterized Datasets 基于特征数据集的数学单词问题求解的比较分析
Pub Date : 2022-12-18 DOI: 10.1109/IEIR56323.2022.10050058
Shengnan Chen, Pingheng Wang, Mengyuan Zhou, Zirui Wang, Bin He
Benefit from the neural network research, a couple of neural solvers have been developed for automatically solving math word problems (MWPs). These neural solvers are evaluated on several benchmark datasets with diverse characteristics, which leads to a poor comparability of the performance of each solver. To address the problem, a comparative analysis is conducted in this paper to explore the performance variations of neural solvers in solving different characteristic MWPs. The architectures of the typical neural solvers are studied and a four-dimensional index model is proposed to characterize the benchmark dataset into different subsets. The experimental results show that the Seq2Seq-based model solvers perform well on most of the subsets, while Graph2Tree based solvers seem to have more potential in solving problems with complex expression structures.
得益于神经网络的研究,一些用于自动求解数学单词问题的神经解算器已经被开发出来。这些神经解算器在多个具有不同特征的基准数据集上进行评估,这导致每个解算器的性能可比性较差。为了解决这一问题,本文进行了对比分析,探讨了神经解算器在求解不同特征mwp时的性能变化。研究了典型神经解算器的结构,提出了一个四维索引模型,将基准数据集划分为不同的子集。实验结果表明,基于seq2seq的模型求解器在大多数子集上表现良好,而基于Graph2Tree的求解器在解决复杂表达结构问题方面似乎更有潜力。
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引用次数: 0
期刊
2022 International Conference on Intelligent Education and Intelligent Research (IEIR)
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