2D Graphical Interaction In Elearning
Journal Title: Romanian Journal of Human - Computer Interaction - Year 2012, Vol 5, Issue 2
Abstract
Sketching is often used by people to express ideas. Some concepts that are hard to explain in words can be easily expressed using a figure or drawing. As the pen-based user interfaces became common, many systems that use this type of interaction were built. The traditional methods used in sketch recognition can be grouped into three categories: aspect-based recognition, gesture-based recognition and geometry-based recognition. Although each of these methods has advantages and disadvantages, the geometry-based methods have proved to be the most suitable for building multi-domain recognizers. As an extension to the existing eLearning systems, we propose the integration of a sketch recognition system that can be used in many educational areas. The recognition system supports the user in the drawing process and offers meaningful and relevant information about the recognized concepts. In order to use questions that require a graphical answer, before the system can correctly and automatically evaluate the student's answer and offer immediate feedback, the teacher must provide a reference solution to the problem, the correct/expected answer. The system uses its knowledge, consisting of primitive forms and constraints) to recognize the graphical primitives and the relations between them and compares the student’s solution with the one given by the teacher.
Authors and Affiliations
Andreea Chişcari, Dorian Gorgan
Keywords
Related Articles
- EP ID EP28893
- DOI -
- Views 413
- Downloads 9
A Multidimensional Model of the Usefulness of Facebook for University Students
The popularity of social networking websites among university students stimulated the interest for studying the potential of use for educational purposes. The objective of this study is to test and validate a multidimens...
Web 2.0 Recruiting
The article describes the first steps towards a semantic competence management system. The system is designed to improve the activity of a recruiting company specialized in the IT domain and it uses technologies from the...
The Role and the Importance of Adaptated Information Technology (AIT) in the Process of Social Integration of Persons with Disabilities
IT&C has a great impact on building social relations, becoming a research area in full development. Advances in technologies had allowed the development of new services, systems, products and applications for persons wit...
Recovering implicit thread structure in chat conversations
The analysis of chat conversations is a cumbersome task because of the number of different discussion threads that may occur at a certain moment. While most participants in a chat session tend to discuss one topic at a t...
An Intra and Inter-Topic Evaluation and Cleansing Method
Topic modeling is a growing research field and novel ways of interpreting and evaluating results are necessary. We propose a method for evaluating and improving the performance of topic models generating algorithms relyi...