Jorge Gómez Sanz

Analysis of Web Objects Distribution

Understanding how the web objects of a website are demanded is relevant for the design and implementation of techniques that assure a good quality of service. Several authors have studied generic profiles for web access, concluding that they resemble a Zipf distribution, but further evidences were missing. This paper contributes with additional empirical evidences that confirm that a Zipf distribution is present in different domains and that its form has changed from past studies. More specifically, the α parameter has become higher than one, as a consequence that the popularity factor has become more critical than before. This analysis also considers the impact of web technologies on the characterization of web traffic.

Agent behavior representation in INGENIAS

Nowadays, we have different agent oriented methodologies that enable developers to produce agent oriented designs. One of the recurrent problems of these methodologies is how to describe the behaviour of agents within a system. A developer needs primitives to express autonomy, proactivity, and social concerns of his agents, but there are problems in understanding what does these elements mean, beyond any natural language explanation. There is a clear need of semantic models understandable by average engineers. These models could help in foreseeing the impact of autonomy with respect system goals, or determining if, in an agent specification, a task will ever be scheduled for execution. This paper presents a proposal of semantic model for the visual modelling language used in INGENIAS, a project started in 2002 and considered the inheritor of MESSAGE/UML.

Testing Ambient Assisted Living Solutions with Simulations

The paper introduces a testing solution for evaluating Ambient Assisted Living systems by means of 3D simulations generated with a game engine, complex event processing, and classifiers. The solution aims to ensure that: (1) some key features of the problem appear in the simulation, and (2) the assistive solution interacts with the persons in the right way. A specific testing solution is needed because of the evolving nature of the simulation (each iteration of the requirements specification involves changes in the activities within the simulation) and the assistive solution (it operates in real time and evaluating its performance may require manually inspecting hours of simulation). The approach is illustrated with a proof-of-concept experiment.

Detecting plagiarism in micro-blogging social networks

Fighting plagiarism can be an exhausting task. In the context of social networks, it is common that some users regularly copy the content prepared by others and exhibit them as own. In the higher education context, it is not different and it may be even more critical. In a write-to-learn approach, if students copying text of others get similar rewards as those doing the effort, it could be a cause of dis-encouragement for those working students. Despite the interest in anti-plagiarism tools, there are no anti-plagiarism libraries that allow a self-hosted solution. Existing APIs are commercial ones, and are not tailored for specific languages. The paper introduces a plagiarism detection tool developed using free resources and that has been integrated into Bolotweet, a social network for teaching support which allows to score student microannotations. The tool is prepared to compare microannotations and tell the similarity between one and others that were posted in the past. It aids the teacher to identify cheating students and also to provide consistency in the scoring. By identifying similar annotations, and informing which score was assigned, the teacher can generate similar scores to similar micro-annotations.

An Integrated Framework for Enabling End-User Configuration of AmI Simulations for Open Wide Locations

The deployment of AmI technologies in large facilities sets new challenges due to the difficulty to perform experiments in physical large settings, with high number of users. We propose a framework for such domain using simulations that combine social simulation techniques, specialized in assessing large population behaviors, along with experience in AmI systems simulations, specialized in considering sensor and actuator networks embedded in a physical environment. The framework will allow the configuration of simulation features and options according to user and device models defined by domain experts, as well as the interaction between the proposed simulator and a context generated by external sources (other simulators or AmI infrastructures). This paper also proposes the first steps towards an implementation of this architecture through contributions on known simulators.

Social Identity Management in Social Networks

There is a lot of hype about social networks and related software within the concept Web 2.0 in the business and technical worlds. Given the fact that information is being widely spread in an exponential way with rooted dependencies among networks of social networks, we could find our digital identity exposed in ways that we could consider as inappropriate. Further than censorship, there is an arising need of knowing what is happening with the information we are delivering somewhere in the net, managing the distribution and the quality of detailed information. This paper discusses on which ways social identity management could be approached and further analyzed.