基于多代理的个性化推荐学习系统

针对现有学习系统存在信息过载、缺乏个性化服务能力、不能提供检索服务的问题,提出基于多代理构建个性化推荐学习系统。该系统利用JADE设计学习者Agent与推荐Agent,采用Lucene设计带有个性化能力的搜索引擎支持推荐,并融合3种推荐方法发挥多Agent间协商与协作的优势。实验结果表明,相比单一推荐方法,该系统具有较好的推荐效果和效率。     

基于自组织社区发现协作学习算法

远程学习者通常很难判断哪些学习资源最适合他们的阅读需要,同时对教师来说,针对每个学习者重新组织不同的学习资源几乎是不可能的.基于此,提出一种新颖的学习偏好建模方法,通过将动态学习数据映射为"资源、评估"的方式实现对学习特征的综合评估;通过构建智能代理来监控学习者的动态学习行为;提出组隶属度奖励机制和组成员交换机制,实现对分布式环境下的相似学习者的社区自组织;同时,基于JADE智能代理平台开发了一个协作学习平台,使得具有相似学习偏好的学习者能够进行学习资源和经验的共享.实验证明,算法具有较高的匹配准确性和社区构建效率,并能够切实提高协作学习的有效性.     

个性化学习资源推荐系统研究

通过分析远程网络学习系统中学习者对学习资源的访问历史,以及与学习者有类似访问兴趣的同组学习者的学习偏好,为学习者提供个性化的资源推荐服务,能够有效提高各种学习资源的利用效率,从而提高教学质量.     

基于自组织社区发现的协作学习算法

远程学习者通常很难判断哪些学习资源最适合他们的阅读需要,同时对教师来说,针对每个学习者重新组织不同的学习资源几乎是不可能的。基于此,提出一种新颖的学习偏好建模方法,通过将动态学习数据映射为“资源、评估”的方式实现对学习特征的综合评估;通过构建智能代理来监控学习者的动态学习行为;提出组隶属度奖励机制和组成员交换机制,实现对分布式环境下的相似学习者的社区自组织;同时,基于JADE智能代理平台开发了一个协作学习平台,使得具有相似学习偏好的学习者能够进行学习资源和经验的共享。实验证明,算法具有较高的匹配准确性和社区构建效率,并能够切实提高协作学习的有效性。     

基于协同推荐学习资源系统的设计和实现

随着网上学习者的不断增多和网络学习资源的不断丰富,学习者需要系统能够推荐他们感兴趣的资源。通过使用ASP.NET设计开发学习资源网站,研究了协同过滤推荐技术的算法,并实现了基于协同推荐学习资源系统的设计。     

个性化学习资源推荐系统设计

为解决用户无法有效甄别学习资源这一问题,构建一个具备个性化推荐系统是十分必要的。本文设计并实现了一款个性化学习资源推荐系统。系统采用基于用户的协同过滤推荐算法,使用Flask Web框架、Vue框架、PyCharm和MySQL建站工具。该系统可以缓解用户甄别学习资源的困扰,为用户推荐其感兴趣的学习资源。     

基于情境感知的学习资源个性化推荐机制研究

面对海量的学习资源,如何为学习者推荐与情境相匹配的学习资源是亟需解决的问题.文章在详细描述学习资源个性化推荐情境要素的基础上,构建了包含情境感知层、资源管理层、学习诊断层、个性推荐层及学习者界面的学习资源个性化推荐系统,并阐述了系统的推荐流程及实现.在情境感知理论的基础上,构建以情境感知技术为核心的学习资源个性化推荐系...     

个性化网络学习资源推荐系统研究

通过搜索资源来学习现已成为网络学习的一种重要的学习方式,为了提高这种方式下的学习效率,本文提出了一种基于Agent的网络推荐系统,通过获取学习者的当前学习需求,与内嵌的专家知识进行集成,利用多属性决策方法作为比较机制,以达到推荐合适学习资源的目的。系统还提出协同过滤方法,将相似学习者的学习资源推荐给学习者。最后。采用JADE平台开发了原型系统,并进行系统的集成和Web应用设计。     

基于学习风格的个性化自适应资源推荐算法研究

个性化自适应资源推荐是以学习者为中心、以人工智能和大数据技术为基础,模拟人类思维进行学习资源推荐的过程。论文在分析学习者和资源学习风格的基础上,分别构建学习者模型和资源模型,运用基于学习风格过滤推荐算法、协同过滤推荐算法、关联规则推荐算法,展开个性化自适应资源推荐研究。研究结果表明,以学习风格为基础的混合式自适应推荐的结果,更贴合学习者的个性化学习需求。     

基于Hebbian一致性学习的P2P推荐算法

借鉴社会网络的概念,构建了一个基于信任权值的P2P(peer-to-peer)推荐网络,其中每个对等体作为一个用户代理负责维护其在推荐网络中的信任邻居关系。在此基础上,提出了一种基于Hebbian一致性学习的信任权重学习算法,并且基于相似用户发现机制、信任权重学习规则、潜在邻居调整策略等来自适应地调整用户与邻居用户的信任权重。实验数据证明该算法具有较高的推荐效率、社区构建效率和良好的可扩展性。     

基于多Agent的个性化协作学习系统研究与实现

远程教育技术的高速发展为远程学习者提供了极大的便利,使得学生可以在任何时候任何地点学习适合自己的内容。然而远程学习者地理上的分散性,也不可避免地产生了大量的孤独学习者。因此怎样提供一种有效的方法,将具有相同兴趣的学生组织到一起,并帮助他们在学习过程中能够共同分享学习经验、交流学习资料,已逐渐成为革新E—Learning技术中的一个研究热点。该文构建了一个基于多Agent机制的个性化协作学习系统,并提出了一种新颖的打分／交换的用户动态聚类算法,从学生的资源请求中发现学生兴趣,并有效地将具有相同兴趣的学生自动组成学习社区。实验证明,该算法具有较高的效率和良好的可扩展性。     

Personalized E-learning system with self-regulated learning assisted mechanisms for promoting learning performance

With the rapid development of Internet technologies, the conventional computer-assisted learning (CAL) is gradually moving toward to web-based learning. Additionally, instructors typically base their teaching methods to simultaneously interact with all learners in a class based on their professional disciplines in the traditional classroom learning. However, the requirements of individual learners are frequently ignored in the traditional classroom learning. Compared to the conventional classroom learning, individual learners are the focus in web-based learning environments and many web-based learning systems provide personalized learning mechanisms for individual learners. One key problem is that learners have to frequently interact with web-based learning systems even though they lack instructors to monitor their learning attitudes and behavior during learning processes. Hence, a learner’s ability to self-regulated learning is clearly an important factor affecting learning performance in a web-based learning environment. Self-regulated learning is a goal-oriented learning strategy that is very suited to self-managed learning to promote learning performance of individual learners in a web-based learning environment. However, how to assist learners in cultivating self-regulated learning abilities efficiently is an important research issue in the self-regulated learning field. This study presents a novel personalized e-learning system with self-regulated learning assisted mechanisms that help learners enhance their self-regulated learning abilities. The proposed self-regulated learning mechanisms assist learners in becoming lifelong learners who have autonomous self-regulated learning abilities. Additionally, four self-regulated learning types, based on a self-regulated learning competence index and self-regulated learning performance index, are also proposed. Experimental results demonstrate that the proposed self-regulated learning assisted mechanisms aid learners by speeding up their acquisition of self-regulated learning abilities in a personalized e-learning system, and help their learning performance.     

Intelligent web-based learning system with personalized learning path guidance

Personalized curriculum sequencing is an important research issue for web-based learning systems because no fixed learning paths will be appropriate for all learners. Therefore, many researchers focused on developing e-learning systems with personalized learning mechanisms to assist on-line web-based learning and adaptively provide learning paths in order to promote the learning performance of individual learners. However, most personalized e-learning systems usually neglect to consider if learner ability and the difficulty level of the recommended courseware are matched to each other while performing personalized learning services. Moreover, the problem of concept continuity of learning paths also needs to be considered while implementing personalized curriculum sequencing because smooth learning paths enhance the linked strength between learning concepts. Generally, inappropriate courseware leads to learner cognitive overload or disorientation during learning processes, thus reducing learning performance. Therefore, compared to the freely browsing learning mode without any personalized learning path guidance used in most web-based learning systems, this paper assesses whether the proposed genetic-based personalized e-learning system, which can generate appropriate learning paths according to the incorrect testing responses of an individual learner in a pre-test, provides benefits in terms of learning performance promotion while learning. Based on the results of pre-test, the proposed genetic-based personalized e-learning system can conduct personalized curriculum sequencing through simultaneously considering courseware difficulty level and the concept continuity of learning paths to support web-based learning. Experimental results indicated that applying the proposed genetic-based personalized e-learning system for web-based learning is superior to the freely browsing learning mode because of high quality and concise learning path for individual learners.     

Personalized web-based tutoring system based on fuzzy item response theory

With the rapid growth of computer and Internet technologies, e-learning has become a major trend in the computer assisted teaching and learning field. Previously, many researchers put effort into e-learning systems with personalized learning mechanism to aid on-line learning. However, most systems focus on using learner’s behaviors, interests, and habits to provide personalized e-learning services. These systems commonly neglect to consider if learner ability and the difficulty level of the recommended courseware are matched to each other. Frequently, unsuitable courseware causes learner’s cognitive overload or disorientation during learning. To promote learning effectiveness, our previous study proposed a personalized e-learning system based on Item response theory (PEL-IRT), which can consider both course material difficulty and learner ability evaluated by learner’s crisp feedback responses (i.e. completely understanding or not understanding answer) to provide personalized learning paths for individual learners. The PEL-IRT cannot estimate learner ability for personalized learning services according to learner’s non-crisp responses (i.e. uncertain/fuzzy responses). The main problem is that learner’s response is not usually belonging to completely understanding or not understanding case for the content of learned courseware. Therefore, this study developed a personalized intelligent tutoring system based on the proposed fuzzy item response theory (FIRT), which could be capable of recommending courseware with suitable difficulty levels for learners according to learner’s uncertain/fuzzy feedback responses. The proposed FIRT can correctly estimate learner ability via the fuzzy inference mechanism and revise estimating function of learner ability while the learner responds to the difficulty level and comprehension percentage for the learned courseware. Moreover, a courseware modeling process developed in this study is based on a statistical technique to establish the difficulty parameters of courseware for the proposed personalized intelligent tutoring system. Experiment results indicate that applying the proposed FIRT to web-based learning can provide better learning services for individual learners than our previous study, thus helping learners to learn more effectively.     

Design a personalized e-learning system based on item response theory and artificial neural network approach

In web-based educational systems the structure of learning domain and content are usually presented in the static way, without taking into account the learners’ goals, their experiences, their existing knowledge, their ability (known as insufficient flexibility), and without interactivity (means there is less opportunity for receiving instant responses or feedbacks from the instructor when learners need support). Therefore, considering personalization and interactivity will increase the quality of learning. In the other side, among numerous components of e-learning, assessment is an important part. Generally, the process of instruction completes with the assessment and it is used to evaluate learners’ learning efficiency, skill and knowledge. But in web-based educational systems there is less attention on adaptive and personalized assessment. Having considered the importance of tests, this paper proposes a personalized multi-agent e-learning system based on item response theory (IRT) and artificial neural network (ANN) which presents adaptive tests (based on IRT) and personalized recommendations (based on ANN). These agents add adaptivity and interactivity to the learning environment and act as a human instructor which guides the learners in a friendly and personalized teaching environment.     

基于Web2.0和本体检索的个性化E-learning系统研究与开发

针对当前E-learning系统中存在着堆砌教学资料和学习内容单一、个性化不足等问题,设计一个基于Web2.0和本体检索技术的个性化E-learning系统,通过应用Ajax和RSS聚合技术以及Ontology本体技术,使得该系统能根据学习者的知识结构、学习目标、学习风格、偏好等特征信息提供适应学习者的教学方法和学习资源,营造个性化的网络学习环境。实验结果表明该系统能有效促进学生网络学习的效率,满足学生个性化学习的需求。     

基于Agent的智能化学习平台的研究

在传统的基于Web的远程教学系统中,系统按照事先设定的教学策略将课件存储在服务器上,等待学习者点击浏览或下载,学生只能被动地受教而不能根据自身特点选择学习策略,调度、控制学习进度,而在此单一模式下,教师的指导者地位也无法得到充分体现,师生间、学习者间的交互性和协作性差.提出了一种支持四层结构的智能化学习平台的解决方案.重点讨论了智能化学习系统中支持个性化学习的多Agent技术,包括:移动Agent、多Agent特性,个性化学习Agent的功能结构、Agent实现的技术、策略与层次等热点问题.     

Personalized e-learning system using Item Response Theory

Personalized service is important on the Internet, especially in Web-based learning. Generally, most personalized systems consider learner preferences, interests, and browsing behaviors in providing personalized services. However, learner ability usually is neglected as an important factor in implementing personalization mechanisms. Besides, too many hyperlink structures in Web-based learning systems place a large information burden on learners. Consequently, in Web-based learning, disorientation (losing in hyperspace), cognitive overload, lack of an adaptive mechanism, and information overload are the main research issues. This study proposes a personalized e-learning system based on Item Response Theory (PEL-IRT) which considers both course material difficulty and learner ability to provide individual learning paths for learners. The item characteristic function proposed by Rasch with a single difficulty parameter is used to model the course materials. To obtain more precise estimation of learner ability, the maximum likelihood estimation (MLE) is applied to estimate learner ability based on explicit learner feedback. Moreover, to determine an appropriate level of difficulty parameter for the course materials, this study also proposes a collaborative voting approach for adjusting course material difficulty. Experiment results show that applying Item Response Theory (IRT) to Web-based learning can achieve personalized learning and help learners to learn more effectively and efficiently.     

Personalized curriculum sequencing utilizing modified item response theory for web-based instruction

Curriculum sequencing is an important research issue for Web-based instruction systems because no fixed learning pathway will be appropriate for all learners. Therefore, many researchers focused on developing e-learning systems with personalized learning mechanism to assist on-line Web-based learning and adaptively provide learning pathways. However, although most personalized systems consider learner preferences, interests and browsing behavior in providing personalized curriculum sequencing services, these systems usually neglect to consider whether learner ability and the difficulty level of the recommended courseware are matched to each other or not. Generally, inappropriate courseware leads to learner cognitive overload or disorientation during learning, thus reducing learning effect. Besides, the problem of concept continuity of learning pathways also needs to be considered while implementing personalized curriculum sequencing. Smoother learning pathways increase learning effect, avoiding unnecessarily difficult concepts. This paper presents a prototype of personalized Web-based instruction system (PWIS) based on the proposed modified Item Response Theory (IRT) to perform personalized curriculum sequencing through simultaneously considering courseware difficulty level, learner's ability and the concept continuity of learning pathways during learning. In the proposed modified IRT, the information function is revised to consider the concept continuity of learning pathway as well as considering the difficulty level of courseware and individual learner ability. Experiment results indicate that applying the proposed modified IRT for Web-based learning can construct suitable learning pathway to learners for personalized learning, and help them to learn more effectively.     

Incorporating customization and personalization into game-based learning: A cognitive style perspective

In recent years, customization and personalization were widely applied to accommodate the needs of different cognitive style groups. Such two approaches have different advantages and disadvantages but there is a lack of studies to compare these two approaches from the perspective of game-based learning, which is currently popular in educational settings. To this end, we developed a customized game-based learning system and a personalized game-based learning system and conducted two empirical studies to examine how cognitive styles affected learner's reactions to these two game-based learning systems. The results from the customized game-based learning system showed that Holists might not always favor to listen to music because they frequently switched on/off music. On the other hand, Serialists did not prefer to use hints. In addition, learners with the customized game-based learning system had more positive perceptions while learners with the personalized game-based learning system had more negative perceptions though both systems were useful to enhance learners' learning performance, regardless of their cognitive styles.