基于人工情绪的智能情感网络教学系统研究

针时传统智能网络教学系统在情感教学方面的缺陷，基于人工情绪技术提出了一种Web环境下的智能情感网络教学系统结构．该系统由学习情绪模型、情绪教学模型、认知教学模型和学生模型等主要模块所构成，可以获取和识别每个学生的学习表情，并能够根据不同学生的学习情绪和学习效果，实现认知和情感相互协调的个性化教学．     

基于人脸表情识别的智能网络教学系统研究

针对传统智能网络教学系统中存在情感缺失的问题,探索性地设计并提出了一种基于人脸表情识别的智能网络教学系统模型.该模型以教育心理学为理论基础,以人脸面部表情识别为关键技术,通过捕捉和识别学习者的表情,判断和理解其情绪状态,然后根据学习者特定的情绪状态给出相应的情感鼓励或情感补偿.该系统模型促进了人机和谐交互,从一定程度上补偿了网络教育中的情感缺失,为解决网络教育中的情感缺失并实现和谐人机情感交互做出了有益的基础性工作.     

学习情绪研究在远程教学系统中的应用探索

将学习情绪的研究应用到远程教学系统中.针对传统智能教学系统在情感方面的缺陷,介绍了远程教学系统的设计,智能教学系统的模型.该系统主要由情绪模型、认知模型、交互模型、教师模型和学生模型等主要模块构成.概括论述了人脸检测和面部表情识别的一般方法,人机情感交互系统过程和情感模型的建立流程.综合OCC情绪模型和具有反向情绪的二维情绪模型提出了一种新的适合学习情绪研究的情感建模方法,实现远程教学中认知和情感的交互.     

基于Web的智能教学系统的研究与实现

基于Web的智能教学系统综合传统的ITS系统优势,同时又结合Web的特点,系统具有智能性,能够智能地引导学生学习.它是以认知科学为理论基础,综合利用人工智能技术、教育心理学、计算机科学等多门学科的成果而形成的一种对学生实施有效教学的技术.提出了一种基于Web的智能教学系统模型,给出了智能教学系统的知识库的设计、学生模型的构建方法及教学策略的设计,并探讨了学生模型的学习评价,最后对实现系统的关键技术进行了研究.     

基于深度学习的学生学习情感模型建立与分析

传统的情感模型仅仅关注学生学习表情与对应的学习情感之间的关系,而忽略了不同学习情感之间的关系,因而导致学生学习表情识别准确率相对较低。基于此,建立学生学习表情三维状态空间情感模型,并在其中引入Maxout神经元,从而构建优化的三维状态空间情感模型,进一步解决三维梯度弥散问题,更好地优化系统的训练过程,在本模型中还引入了情感分类器的概念,实现对学生学习表情情感状态的有效分类,从而进一步增强模型的泛化能力。另外,建立了愉悦、困惑、惊讶、中性和疲倦5种情感状态的模型,并依据所提出的模型进行了实际验证实验,实验结果表明所提出的优化后的三维状态空间情感模型相比于传统模型识别准确率提升了12.5个百分点。     

基于感兴趣区域特征提取技术的情感语义研究

提出一种基于感兴趣区域特征提取技术的图像情感语义识别模型.着重论述了感兴趣区域的获取、感兴趣区域与非感兴趣区域权重的确定、从RGB颜色空间到HSV颜色空间的转换算法、加权颜色直方图的统计算法以及最终情感聚类的方法.仿真实验结果表明,该模型所实现的底层特征到高层情感语义映射准确率比传统的颜色特征提取技术的图像情感语义识别模型有很大的提高.     

语音情感识别研究进展综述

对语音情感识别的研究现状和进展进行了归纳和总结,对未来语音情感识别技术发展趋势进行了展望. 从5个角度逐步展开进行归纳总结,即情感描述模型、具有代表性的情感语音库、语音情感特征提取、语音情感识别算法研究和语音情感识别技术应用,旨在尽可能全面地对语音情感识别技术进行细致的介绍与分析,为相关研究人员提供有价值的学术参考;最后,立足于研究现状的分析与把握,对当前语音情感识别领域所面临的挑战与发展趋势进行了展望.侧重于对语音情感识别研究的主流方法和前沿进展进行概括、比较和分析.     

增量学习算法对文本情感识别模型的改进

常规的文本情感识别模型不能适应语言的发展,使新生的词汇不能得到有效的情感划分,并且情感识别率低.使用增量学习算法来改进文本情感识别模型,通过收集用户反馈数据,提取其中有价值的情感信息来更新常识库,从而实现对情感识别模型的改进.通过情感聊天的两组对比实验证明了加入增量学习算法的文本情感识别模型准确率优于没有加入增量学习算...     

语音情感智能识别的建模与仿真

语音情感信息具有非线性、信息冗余、高维等复杂特点,数据含有大量噪声,传统识别模型难以消除冗余和噪声信息,导致语音情感识别正确率十分低.为了提高语音情感识别正确率,利用小波分析去噪和神经网络的非线性处理能力,提出一种基于过程神经元网络的语音情感智能识别模型.采用小波分析对语音情感信号进行去噪处理,利用主成分分析消除语音情感特征中的冗余信息,采用过程神经元网络对语音情感进行分类识别.仿真结果表明,基于过程神经元网络的识别模型的识别率比K近邻提高了13％,比支持向量机提高了8.75％,该模型是一种有效的语音情感智能识别工具.     

基于Web的智能教学系统的研究与实现

基于Web的智能教学系统综合传统的ITS系统优势,同时又结合Web的特点,系统具有智能性,能够智能地引导学生学习。它是以认知科学为理论基础,综合利用人工智能技术、教育心理学、计算机科学等多门学科的成果而形成的一种对学生实施有效教学的技术。提出了一种基于Web的智能教学系统模型,给出了智能教学系统的知识库的设计、学生模型的构建方法及教学策略的设计,并探讨了学生模型的学习评价,最后对实现系统的关键技术进行了研究。     

Towards an Intelligent Tutoring System Architecture that Supports Remedial Tutoring

For successful teaching to take place an intelligenttutoring system has to be able to cope with anystudent errors that may occur during a tutoringinteraction. Remedial tutoring is increasingly viewedas a central part of the overall tutoring process, andrecent research calls for adaptive remedial tutoring. This paper discusses the issues of remedial tutoringthat have been proposed or implemented to supportefficient remedial tutoring. These issues serve touncover any underlying principles of remediation thatgovern remedial tutoring with intelligent tutoringsystems. In order to incorporate these principles ofremediation into intelligent tutoring systemsdevelopment processes this paper continues with thedevelopment of a model that can be employed in thedevelopment of an intelligent tutoring system that iscapable of offering remedial tutoring according tothese principles. This model is a formalisation ofremedial interventions with intelligent tutoringsystems. To demonstrate how the model can be employed indeveloping an intelligent tutoring system, INTUITION,the implementation of an existing business simulationgame, has been developed. This paper concludes with anillustration of how the model for remedial operationsprovides for remedial tutoring within INTUITION. Theevaluation of INTUITION shows that the model forremedial operations is a useful method for providingefficient remedial tutoring.     

Agent based affective tutoring systems: A pilot study

An important trend in the development of Intelligent tutoring systems (ITSs) has been that providing the student with a more personalized and friendly environment for learning. Many researchers now feel strongly that the ITSs would significantly improve performance if they could adapt to the affective state of the learner. This idea has spawned the developing field of affective tutoring systems (ATSs): ATSs are ITSs that are able to adapt to the affective state of students. However, ATSs are not widely employed in the tutoring system market. In this paper, a survey was conducted to investigate the critical factors affecting learner’s satisfaction in ATSs based on an ATS developed by us. The results revealed that learner’s attitude toward affective computing, agent tutor’s expressiveness, emotion recognition accuracy, number of emotions recognized by agent tutor, pedagogical action and easy of the use of the system have significant influence on learner’s satisfaction. The results indicate institutions how to further strengthen the ATSs’ implementation.     

智能教学系统中知识表示模型的研究与设计

研究了智能教学系统功能与结构。分析了知识库模型在智能教学系统中的重要地位;通过对知识库中的教学内容与教学规则两类知识的分析和对超媒体知识表示的研究,构建了一个基于层次结构的超媒体网络模型,并在知识网络图中节点里嵌入教学规则,以实现教学内容的动态组织、呈现和教学过程中的自适应导航。该模型为教学系统的决策与分析提供了智能的辅助手段。     

TEx-Sys model for building intelligent tutoring systems

Special classes of asynchronous e-learning systems are the intelligent tutoring systems which represent an advanced learning and teaching environment adaptable to individual student’s characteristics. Authoring shells have an environment that enables development of the intelligent tutoring systems. In this paper we present, in entirety, for the first time, our approach to research, development and implementation related to intelligent tutoring systems and ITS authoring shells. Our research relies on the traditional intelligent tutoring system, the consideration that teaching is control of learning and principles of good human tutoring in order to develop the Tutor–Expert System model for building intelligent tutoring systems in freely chosen domain knowledge. In this way we can wrap up an ongoing process that has lasted for the previous fifteen years. Prototype tests with the implemented systems have been carried out with students from a primary education to an academic level. Results of those tests are advantageous, according to surveys, and the implemented and deployed software satisfies functionalities and actors’ demands.     

Developing Knowledge-Based Intelligent Multimedia Tutoring Systems Using Semantic Content-Based Modelling

The complex nature of semantic video and audio content has made multimedia difficult to use within the traditional architecture of a knowledge-based intelligent tutoring system (ITS). This paper investigates how multimedia syntax and semantics may be integrated into the confines of the knowledge-based ITS architecture so as to develop a knowledge-based intelligent multimedia tutoring system (IMTS). The paper contributes a semantic content-based model that can be used for this purpose. Multimedia frames (m-frames) are used as the framework by which the syntactic and semantic information is represented within the model. The paper discusses how IMTSs may be developed using the model, and then demonstrates the use of our approach in the development of ARISTOTLE, an IMTS for teaching young children basic zoology.     

User modelling and user adapted interaction in an intelligent tutoring system

User modelling and user-adapted interaction are crucial to the provision of true individualised instruction, which intelligent tutoring systems strive to achieve. This paper presents how user (student) modelling and student adapted instruction is achieved in FITS, an intelligent tutoring system for the fractions domain. Some researchers have begun questioning both the need for detailed student models as well as the pragmatic possibility of building them. The key contributions of this paper are in its attempt to rehabilitate student modelling/adaptive tutoring within ITSs and in FITS's practical use of simple techniques to realise them with seemingly encouraging results; some illustrations are given to demonstrate the latter.     

基于多Agent的智能教学系统模型研究

随着人工智能技术的不断发展,人工智能领域的理论(特别是Agent技术)不断地被应用到智能教学系统(ITS)中,从而给ITS的研究与应用提供了新的发展空间。文中设计了一个基于多Agent的智能教学系统模型,着重构建了教师A gent和学生Agent,同时提出了用户层、软件Agent层和数据服务器层这种分层的ITS软件体系结构。     

Student modeling and assessment in intelligent tutoring of software patterns

This paper presents the design, implementation, and evaluation of a student model in DEPTHS (Design Pattern Teaching Help System), an intelligent tutoring system for learning software design patterns. There are many approaches and technologies for student modeling, but choosing the right one depends on intended functionalities of an intelligent system that the student model is going to be used in. Those functionalities often determine the kinds of information that the student model should contain. The student model used in DEPTHS is a result of combining two widely known modeling approaches, namely, stereotype and overlay modeling. The model is domain independent and can be easily applied in other learning domains as well. To keep student model update during the learning process, DEPTHS makes use of a knowledge assessment method based on fuzzy rules (i.e., a combination of production rules and fuzzy logics). The evaluation of DEPTHS performed with the aim of assessing the system’s overall effectiveness and the accuracy of its student model, indicated several advantages of the DEPTHS system over the traditional approach to learning design patterns, and encouraged us to move on further with this research.