Interactive concept maps in intelligent educational web systems

2007 11th International Conference Information Visualization (IV '07), 2007

In this article, Visual Concept Explorer (VCE), a concept mapping tool, is introduced and its design principles are described. VCE creates dynamic concept maps for the user and facilitates user's visual interaction to concepts and documents. Its central idea is to make implicit knowledge structures explicit. As an example of practical knowledge mapping application, VCE has characteristics of both information visualization and knowledge visualization.

2007

Ab s t rac t : Visualizing the contents to be learned about an instructional material is an effective way to facilitate learning. However, the effectiveness is not always obtained only by looking at the visualized representation. The knowledge visualization accordingly requires learners to devote more attention it. Considering the context of learning a text, this paper gives an effective knowledge visualization called Diagram Tailoring, and demonstrates an intelligent learning system. This system presents part of a diagram as a visual representation, and encourages learners to construct the whole diagram so that their attention can be devoted to the visualized representation. This paper also describes an experiment on Diagram Tailoring. As a result, we have ascertained that partial diagram presentation makes a contribution to retaining knowledge to be learned from a text. Diagram Tailoring can be consequently viewed as an available way for allowing learners to obtain the intrinsic fruitfulness of knowledge visualization.

2002

Visual knowledge maps are being used to improve the communication processes within global organizations. Knowledge maps are graphical presentations of ontological knowledge as well as of business processes. Especially for enterprises working in a multi-cultural space the explicit formaliza-tion of knowledge and business rules using graphical models seems to be a very promising approach in order to improve discussion and learning processes. Publishing and automatic inference or search techniques are becoming available due to the latest standards for Semantic Web worked out by W3C. This article gives an impression how to create end user interfaces for the ”Corporate Knowledge Base” using MS Office and Visio with the modeling tool SemTalk. Several problems on capturing and maintaining large scale knowledge bases are discussed. Specific attention is given to the problem of weighting and association of information from orthogonal ontologies, which arises while using the same concepts in different graphical scenarios.

2007

The problem of the quality of architectural representation, in a dynamic use finalized in web or database publication, represents the main theme of the current debate regarding the ways in which to share knowledge between different disciplinary fields. Starting with the surveying operations with the laser scanner technology, it is possible to obtain complex three-dimensional models that, through the three-dimensional photogrammetry and UV mapping systems, are integrated in a useful model for various studies. The numeric models, however, that are characterized by a high level of detail cannot be used in web navigation; the restitution of formal, dimensional and chromatic data explain a communication problem linked by the expansion of it's users and the quality of the information transmitted. Therefore, the construction of a web site that organizes the acquired and elaborated materials require two different categories of models: one linked by immediate web navigation and one in high detail that is capable of accurately describing the studied object. In such a system, the three-dimensional models become instruments of immediate visual communication, providing many links for in-depth examination. The diminishing of geometric information is substituted with maps that represent detailed and embossed maps. The normal-map are capable of increasing the perceptive quality of the low-poly models because it can substitute the normals of the model with the one obtained by RGB bitmaps that associate the components of the normal vector to the faces of the detailed numeric model with these three canals. The synergy use of the PHP language, database MySQL and VRML allows for the creation of a web site that gives the user the opportunity to study the object differently, visualizing the outcomes in real time.

X Workshop de Investigadores en Ciencias de la Computación, 2008

Visualization is the process of mapping data into visual dimensions to create a visual representation to amplify cognition. Visual representations are essential aids to human cognitive tasks and are valued to the extent that they provide stable and external reference points upon which dynamic activities and thought processes may be calibrated and upon which models and theories can be tested and confirmed. The active use and manipulation of visual representations makes many complex and intensive cognitive tasks feasible. A visual representation is able to convey relationships among many elements in parallel and provides an individual with directly observable memory. A successful visualization allows the user to gain insight into the data, in other words to communicate different aspect of the data in an effective way. Even with today's visualization systems that give the user a considerable control over the visualization process, it can be difficult to produce an effective visualization. To obtain useful results, a user had to know which questions to pose. Problems had to be framed in very precise terms. A strategy to improve this situation is to guide the user in the selection of the parameters involved in the visualization. Our research goal is the design of a visualization system that assist the user to do the work, by considering the semantic of the data together with the semantic of the stages through all the visualization process.

Bartın Üniversitesi Eğitim Fakültesi Dergisi

Concept maps are two-dimensional visual tools providing the definition of the relationships between the concepts in a certain subject area. Although various studies indicate that the graphical display of information has a positive contribution to the process of learning, the creation of concept maps in contents especially with a high text density brings some difficulties with it. It is observed that since studies are conducted on the automatic creation of concept maps for the purpose of overcoming these difficulties, but the algorithms used in these kinds of studies are generally developed according to the language structure, the products introduced do not adjust to the language structure of Turkish. From this viewpoint, a web-based application was developed for the creation of concept maps for Turkish texts by using the term frequency and inverse document frequency algorithms and the application developed was published at www.kavramharitasiolustur.com. The concept maps created by the application can be downloaded in a format that can be used directly in web-based learning environments.

This paper describes the process followed for visualizing, using DynMap, the student's evolution through the learning process in a Computer Security course at the University. DynMap is a system based on Concept Maps developed with the aim of providing the education community with a tool that facilitates the inspection student data. After a brief introduction, the paper describes the problem to face up. Then, the main characteristics, functionality and components of DynMap are described. Next, the summary of two studies conducted to validate DynMap are presented. Finally, some conclusions and the future perspective are pointed out.

2004

As the importance of visualization grows day by day due to the massive knowledge, information and data generated by various sources like the World Wide Web, books etc. various tools and techniques have been designed and developed to handle complex visualizations. We propose a novel framework for classification of such tools and techniques with special emphasis on concept maps.

International Conference on Information Visualisation, 2001

The main contribution of this paper is to show how vi- sual representations of information can be based on onto- logical classifications of that information. We first discuss the central rˆ ole of ontologies on the Semantic Web. We sub- sequently outline our general approach to the construction of ontology-based visualisations of data. This is followed by a set of

2011

This paper discusses a knowledge-based model for the design and development of units of learning and teaching aids. The idea behind this model originates from both the analysis of the open issues in instructional authoring systems, and the lack of a well-defined process able to merge pedagogical strategies with systems for the knowledge organization of the domain. In particular, it is presented the Educational Concept Map (ECM): a, pedagogically founded (derived from instructional design theories), abstract annotation system that was developed with the aim of guaranteeing the reusability of both teaching materials and knowledge structures. By means of ECMs, it is possible to design lessons and/or learning paths from an ontological structure characterized by the integration of hierarchical and associative relationships among the educational objectives. The paper also discusses how the ECMs can be implemented by means of the ISO/IEC 13250 Topic Maps standard. Based on the same model, it is also considered the possibility of visualizing, through a graphical model, and navigate, through an ontological browser, the knowledge structure and the relevant resources associated to them.

In this paper a general purpose tool for editing Concept Maps (CM-ED) is presented. This tool exhibits the following features: templates, views and facilities for multilingual concept maps. The tool has been used in different tasks of the Computer Aided Teaching/Learning area. Concretely: domain representation, exercise design and student model visualization.

2009

2014

Current educational theories emphasize assessment as a vital part of teaching-learning process. Alternative assessment techniques aim to expose and promote the process of the learning rather than the final outcome. Concept mapping is a technique for representing conceptual knowledge and relationships between concepts in a graphical form. Requiring to construct concept maps encourages learners to organize concepts and the relationships between them in a hierarchical structure. Although constructing concept maps might be difficult in every domain including mathematics and might require extensive domain knowledge, it is essential to employ concept mapping technique in order to reveal learner’s conceptual understanding. Hence, asking learners construct their concept maps or to fill missing parts in a pre-designed concept maps might be used as a part of the assessment process. A prototype computer system, called Concept Map Assessor (CMA), is designed to help learners to construct concep...

2040

The purpose of the project was to "conduct research and design concept maps about the knowledge base in higher education" and to "prototype these concept maps and the ways in which they may be used to help navigate and search Internet resources." This Technical Report and demonstrations to ERIC staff are the primary deliverables.

2016

Nowadays, Semantic web and ontology applications which came with it, are commonly used in social media, entertainment and shopping sites. But usage of semantic web in education field is limited. Semantic web applications are useful developing tools and ELearning objects can be used for creation and editing. It is important that Individuals on the internet arrange educational techniques based on their interests and needs (Stutt & Motta 2004). Thus, it is envisaged that, semantic web applications will have large contribution conception when moving to individualized education in future education. The aim of this study is to create concept maps for educators, which is one of the significant learning techniques and widely applied in the teaching process, by using ontologies. In accordance to this aim, an ontology based system made with “Protege 4.3” developing tool based on RDF(Resource Description Framework) language and can be queried in E-Learning environment by using ontology query l...