Jorge J Villalon

Universidad Adolfo Ibáñez · Digital Transformation

This article reports on six years of experience on the continuous redesign and implementation of a collaborative marking platform to support summative and formative feedback in higher education. The design follows principles of feedback quality, collaboration between teachers and students, and institutional requirements for administrative features....

In recent years, engineering education teachers have needed to incorporate technology-supported collaboration to enhance learning. Implementing these activities requires course redesign, which must be meticulous for their full potential to be reached. This can require a lot of work for first time users, which can be a barrier to implementation. Edu...

Educational Data Mining can help predict dropout prone students and the factors institutions should observe in trying to avoid an important social problem in modern societies. However, most current predicting models use academic credit worth information from the curricula, ignoring extracurricular activities, while there is evidence from other rese...

Communities of learning face two major problems for his development, low quality and quantity of participation and information overload due to high amount of participation. These two problem can be solved by giving instant feedback and ordering the data available in the online environment. This work presents an automatic method to evaluate and quan...

In this paper we evaluate the impact that a Computer S upported Collaborative Marking (CS CM) system has on the marking process of a highly subjective judging task. To do so, we evaluated the inter-rater reliability of reviewers in charge of marking written essays and the time required to perform such task. We analyzed the results of two groups of...

Despite the well-known value of collaboration in highly subjective tasks and the support that technology can provide in such tasks, there has been little discussion on the possibilities of Computer Supported Collaborative Marking as part of the broader Technology Enhanced Assessment. We argue that the marking process can be thought as a collaborati...

With an always growing number of student enrolment in higher education, providing quality feedback in both digital and paper based assessment becomes a heavy burden for teachers and tutors. The use of assessment rubrics can help overcome this burden, defining several criteria including formative feedback within it. However, current computer-assiste...

Sophisticated Text Mining features such as visualization, summarization, and clustering are becoming increasingly common in software applications. In Text Mining, documents are processed using techniques from different areas which can be very expensive in computation cost. This poses a scalability challenge for real-life applications in which users...

The importance of formative assessment in higher education is agreed among researchers, but marking this type of assessment is a heavy burden. Computer-based assessment and on-screen marking tools are attempts to overcome this burden, but while the former is not suitable for handwritten answers, the latter requires commercial OCR software. This pap...

Writing assignments are ubiquitous in higher education. Writing develops not only communication skills, but also higher-level cognitive processes that facilitate deep learning. Cognitive visualizations, such as concept maps, can also be used as part of learning activities including as a form of scaffolding, or to trigger reflection by making concep...

Teachers in fully online courses face the challenge of achieving students' satisfaction - usually measured using students' surveys - as it is known to affect engagement and motivation, which in turn improves learning outcomes. This challenge grows in complexity with the number of students enrolled in the course. In this paper we report an attempt t...

Essay writing is an important learning activity which involves higher level thinking, the same as concept mapping activities.

This paper presents a new approach for automatic concept extraction, using grammatical parsers and Latent Semantic Analysis. The methodology is described, also the tool used to build the benchmarking corpus. The results obtained on student essays shows good inter-rater agreement and promising machine extraction performance. Concept extraction is th...

Latent Semantic Analysis (LSA) has been success-fully used in a number of information retrieval, doc-ument visualization and summarization applications. LSA semantic spaces are normally created from large corpora that reflect an assumed background knowl-edge. However the right size and coverage of the back-ground knowledge for each application are...

We describe Glosser, a system that supports students in writing essays by 1) scaffolding their reflection with trigger questions, and 2) using text mining techniques to provide content clues that can help answer those questions. A comparison with other computer generated feedback and scorings systems is provided to explain the novelty of the approa...

Tesis (Mag. en Cs. de la Ingeniería)--Pontificia Universidad Católica de Chile, 2001. Incluye bibliografía.