Alejandro Fernandez

Alejandro Fernandez
Universidad Nacional de La Plata | UNLP · Laboratorio de Investigación y Formación en Informática Avanzada LIFIA

PhD

About

75
Publications
13,842
Reads
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406
Citations
Introduction
Alejandro Fernandez currently works at the Laboratorio de Investigación y Formación en Informática Avanzada LIFIA, at the National University of La Plata. Alejandro does research in Computer and Society, Support for Collaborative Work, Distributed Computing and Software Engineering. His current projects is 'Cientopolis (www.cientopolis.org)' and 'RUC-APS (www.ruc-aps.eu).
Additional affiliations
March 2009 - April 2010
Universidad Nacional de Luján
Position
  • Professor
February 2004 - present
Universidad Nacional de La Plata
Position
  • Professor / Researcher
Description
  • I am a full time professor at the Faculty of Informatics at the National University of La Plata (UNLP), and a Researcher at the Buenos Aires Province Commission for Scientific Research (CIC).

Publications

Publications (75)
Article
This article addresses search tasks, which are the most frequent type of tasks users do nowadays on the Web. We suggest that the customization of search services would improve the user’s searching experience, and it also might make search tasks more effective and efficient. We analyze user tasks for performing searches and types of search services....
Article
Running user tests for groupware requires tracking the progress of multiple users performing co-dependent tasks, while facilitating and observing their coordinated actions. This requirement negatively impacts the main objective of user testing, which is detecting usability flaws. User testing of groupware becomes more challenging when run remotely....
Article
Web extensions are powerful software artifacts that allow end-users to adapt and enrich a website. These extensions run on the user's web browser as a single-user software that manipulates available third-party web contents. Many of them offer some collaborative features that depend on a web application. The need of two co-depending software artifa...
Chapter
Gamification can be used to foster participation in knowledge sharing communities. While designing and assessing the potential impact of a gamification design in such a context, it is important to avoid work disruption and negative side effects. A gamification optimization approach implemented with deep reinforcement learning based on play-testing...
Article
Full-text available
Online customers frequently conduct activities that involve multi-criteria decision-making. They analyze and compare alternatives considering a set of shared characteristics. Websites present the information of products without special support for these activities. Moreover, the products of interest for the customer are frequently scattered across...
Article
Mass collaboration mediated by technology is now commonplace (Wikipedia, Quora, TripAdvisor). Online, mass collaboration is also present in science in the form of Citizen Science. These collaboration models, which have a large community of contributors coordinated to pursue a common goal, are known as Collaborative systems. This article introduces...
Chapter
Crop-based Agri-food Supply Chains (AFSCs) are complex systems that face multiple sources of uncertainty that can cause a significant imbalance between supply and demand in terms of product varieties, quantities, qualities, customer requirements, times and prices, all of which greatly complicate their management. Poor management of these sources of...
Chapter
With the aim of pushing innovation through information and communication technology in the agri-business field, working closely with farmers is essential. It is especially important to systematically capture their knowledge in order to analyze, propose and design innovation artifacts (in terms of software applications). In this article, we use Scen...
Chapter
Decision making in agriculture increasingly relies on software, for example to gather important information or to weight alternatives. Information systems innovation in agriculture is a challenging and very active area. Existing software products, frequently implemented as web applications, are found to lack functionality, for example to support co...
Chapter
Full-text available
Decision Makers generally reason on several criteria, aiming to obtain a total consistency or partial order of several alternatives. MultiCriteria analysis is based on the assumption that such ordering exists. Decision Makers are supported by several kinds of approaches or tools. One approach consists in comparing the criteria two by two, i.e. pair...
Article
Full-text available
La difusión de información falsa representa una seria amenaza para los individuos, entidades y sociedades. En respuesta, se ha intensificado el estudio de las “fake news”, la forma en que se producen y difunden, y las medidas para evitar o reducir su propagación. Siguiendo el método de revisión sistemática, el presente trabajo pretende dar respuest...
Article
Actualmente, el juego es analizado como un elemento importante para motivar la interacción de usuarios en diferentes tipos de entornos. Este análisis ha derivado en promover diferentes estrategias para adaptar elementos propios de los juegos y los videojuegos en contextos que no están diseñados como tal, pero en los que se busca estimular la partic...
Chapter
Web extensions are currently the most frequently used mechanism for end-users to externally adapt and enrich the web. While most functionality offered by extensions runs on the browser, extensions that offer collaboration, complex computation, or massive storage rely on a centralized server. Relying on a server increases the cost of building, deplo...
Conference Paper
Full-text available
Globally, consumers are becoming more conscious of unsustainable farming practices. The appetite for safely produced, compliant and pesticide free crops is increasing. In response to these demands, the Argentinian government has issued new regulation to govern the application of good agricultural practices affecting production, storage and selling...
Chapter
Simulations help to understand and predict the behaviour of complex phenomena’s, likewise distributed socio-technical systems or how stakeholders interacts in complex domains. Such domains are normally based on networked based interaction, where information, product and decision flows comes in to play, especially under the well-known supply chains...
Article
Purpose The design of tests is a very important step in the software development process because it allows us to match the users’ expectations with the finished product. Considered as a cumbersome activity, efforts have been made to automatize and alleviate the burden of test generation, but it is still a largely neglected step. The study aims to...
Article
An agri-food value chain (VC) represents a set of activities aimed at delivering highly valuable products to the market. Due to the diversity of actors in the agri-food VCs accumulated knowledge is typically situated within the boundaries of each entity of the VC. Hence, the question is how to improve knowledge sharing in agri-food VC, or more spec...
Preprint
The World Wide Web is a vast and continuously changing source of information where searching is a frequent, and sometimes critical, user task. Searching is not always the user's primary goal but an ancillary task that is performed to find complementary information allowing to complete another task. In this paper, we explore primary and/or ancillary...
Book
Full-text available
ICDSST – the International Conference on Decision Support System Technology – is the flagship event of the Euro Working Group of Decision Support Systems (EWG-DSS). The ICDSST series of conference is relatively young and vibrant (since 2015), while its predecessor, including EWG-DSS workshops and summer schools, has a long tradition. The EWG-DSS wa...
Chapter
In this paper we present a user experience report on a Group Decision Support System. The used system is a Collaborative framework called GRoUp Support (GRUS). The experience consists in three user tests conducted in three different countries. While the locations are different, all three tests were run in the same conditions: same facilitator and t...
Chapter
There are activities that on-line customers daily perform, which involve a multi-criteria decision challenge. Choosing a destination for traveling, buying a book to read, or buying a mobile phone are some examples. Customers analyze and compare alternatives considering a set of shared characteristics, and under certain criteria. E-commerce websites...
Conference Paper
ANONYMOUS PROJECT is an international project run by 16 research institutions. The project's main goal is empowering agriculture production systems through innovative knowledge-based ICT solutions to deal with high risk and uncertain conditions. In this context, a Semantic Mediawiki is desired to support the various stakeholders in the agriculture...
Conference Paper
Decision Support Systems (DSS) help users make decisions by organizing the decision-making process in stages, dealing with several input sources. In the agricultural context, these tools are becoming more important given the variety of data that producers face, market regulations and interaction of several actors with different backgrounds. Differe...
Article
Full-text available
Currently gamification strategies are implemented in the most diverse fields. This paper discusses the designof gamification environment on a collaborative wiki on good agricultural practices. The aim of the projectis to present a gamification design is complemented by a robotic interface, aimed at increasing customizingthe experience from a cooper...
Conference Paper
Full-text available
Recommender systems are integrated with a significant number of Web applications helping users to find what may be of their interest. However, these systems do not always satisfy the users’ expectations regarding when and where recommendations are available, what is recommended, the source of the recommendations or how they are presented. Moreover,...
Article
The main goal of Nodos is to promote the collective creation of semantic knowledge regarding performing arts. Recording and curating information about these expressions contributes to the preservation of the Intangible Cultural Heritage, as defined by UNESCO. One of the challenges related to the preservation of information is the large amount of pe...
Conference Paper
Increasingly challenging global and environmental requirements have resulted in agricultural systems coming under increasing pressure to enhance their resilience capabilities. This in special to respond to the abrupt changes in resource quality, quantity and availability, especially during unexpected environmental circumstances, such as uncertain w...
Conference Paper
In this article, we discuss existing literature on DSS in agriculture, on DSS that use data available in the Semantic Web, and on Semantic Web initiatives focusing on agriculture information. Our goal is to assess the readiness of the Semantic Web as a platform to empower DSS that can keep risk and uncertainty in agriculture under control. Key agri...
Conference Paper
The World Wide Web is a vast and continuously changing source of information where searching is a frequent, and sometimes critical, user task. Searching is not always the user’s primary goal but an ancillary task that is performed to find complementary information allowing to complete another task. In this paper, we explore primary and/or ancillary...
Article
Full-text available
This paper presents two interactive visualization tools for learning management systems (LMS) in order to improve learning and teaching in online courses. The first tool was developed at the Intelligent Information Systems Laboratory (IISLab) at the Tampere University of Technology (TUT). The tool is used to analyse students' activity from automati...
Article
Full-text available
Los sistemas de soporte al trabajo colaborativo, Groupware, son una herramienta valiosa en contextos en los cuales se requiere la participación de un grupo de personas para llevar a cabo una tarea. Las interacciones entre las personas que los utilizan generan grandes flujos de datos (streams) no estructurados. Estos streams pueden analizarse para e...
Conference Paper
Online forums represent nowadays one of the most popular and rich repository of user generated information over the Internet. Searching information of interest in an online forum may be substantially improved by a proper organization of the forum content. With this aim, in this paper we propose an approach that enhances an existing forum by introdu...
Conference Paper
In this paper we present the preliminary results of an ongoing project called (KMM+G). It explores an approach to improve participation in knowledge management processes, in software development companies, through gamification. The paper documents a case study in which we compared two approaches to knowledge construction and refinement. One approac...
Article
The increasing number of publications on recommender systems for Technology Enhanced Learning (TEL) evidence a growing interest in their development and deployment. In order to support learning, recommender systems for TEL need to consider specific requirements, which differ from the requirements for recommender systems in other domains like e-comm...
Conference Paper
Full-text available
REMAR es una iniciativa para la formación y consolidación de una red de docentes de Mercosur interesados en el desarrollo colaborativo de recursos educativos abiertos y accesibles. La principal contribución de este artículo es difundir los objetivos de REMAR y presentar los aspectos tecnológicos que se pretende explorar en la conformación de la red...
Conference Paper
The Semantic Web constitutes a promising platform for the development of computer support for cooperative work. However, the maturity of the related technologies and available datasets poses new challenges. Knowing what these challenges are, and assessing their impact in advance can save effort and reduce the chance of failure. In this article we d...
Chapter
A Technology Enhanced Learning (TEL) ecosystem is a kind of Digital Ecosystem formed by independent platforms combined and used by learners to support their learning. Related work shows that recommendations in TEL can support learners and that in TEL ecosystems, learners do use different platforms. We therefore pursue the goal to enable recommendat...
Article
Full-text available
O acesso a conteúdos digitais é uma das mais importantes formas de apoio à aprendizagem atualmente. Apesar de existirem múltiplos sistemas com este objetivo, pouca atenção é dada à adaptação destes conteúdos às características culturais relacionadas à localização geográfica dos aprendizes. A interação permitida pelos ambientes virtuais de aprendiza...
Conference Paper
Full-text available
Resumo A Sociedade da Informação não reconhece as fronteiras nacionais e, portanto, possui um grande potencial de unir pessoas e negócios. Não obstante, as diferenças legais e tecnológicas podem ser uma barreira para a exploração de suas possibilidades, razão pela qual a cooperação em nível regional e internacional é cada vez mais necessária. As Te...
Article
Full-text available
Wikis have been extensively adopted in educational contexts becoming repositories of potentially reusable, self-contained learning units (commonly known as learning objects). Unfortunately, wikis lack of the packaging and metadata facilities that are needed to enable effective reuse of these units. In this article we propose an approach to use sema...
Article
Full-text available
A Technology Enhanced Learning (TEL) ecosystem is a kind of Digital Ecosystem formed by independent platforms combined and used by learners to support their learning. We believe that recommenda-tions made across these different platforms by exploiting the synergies be-tween them will benefit learners. However, building such cross-platform recommend...
Conference Paper
Full-text available
Web content quality is crucial in any domains, but it is even more critical in the health and e-learning ones. Users need to retrieve information that is precise, believable, and relevant to their problem. With the exponential growth of web contents, Recommender System has become indispensable for discovering quality information that might interest...
Conference Paper
Full-text available
Groupware applications deal with propagation of changes to networked users, consistency maintenance on concurrent access, and provision of awareness. We have built a P2P groupware framework for the sub-domain of synchronous groupware. The framework is based on the concept of operational transformations to provide transparent change propagation and...
Conference Paper
Interaction in virtual communities needs a place to take place. This paper combines flndings from virtual community systems with ideas initially pre- sented by Alexander in A Pattern Language. Patterns for virtual spaces are presented and linked to their real world counterpart.
Article
Full-text available
Recently, the awareness of the importance of distributed software development has been growing in the software engineering community. Economic constraints, more and more outsourcing of development activities, and the increasing geographical distribution of companies come along with challenges of how to organize distributed development. In this arti...
Conference Paper
The objective of this workshop was to discuss current techniques, tools and environments for learning object-oriented concepts and to share ideas and experiences about the usage of computer support to teach the basic concepts of object technology. Workshop participants presented current and ongoing research.This was the sixth workshop in a series o...
Conference Paper
Full-text available
Recently, the awareness of the importance of distributed software development has been growing in the software engineering community. Economic constraints, more and more outsourcing of development activities, and the increasing spatial distribution of companies come along with challenges of how to organize distributed development. In this article,...
Chapter
Interaction and cooperation in traditional face-to-face learning situations is limited due to organisational and time constraints associated with the communication in class. This paper proposes a new approach to support and extend face-to-face learning scenarios by using a combination of handheld devices, an electronic blackboard, and cooperative s...
Conference Paper
The success of groupware lies partially with its design. Welldesigned groupware will still fail to meet its users’ expectations if those users do not feel empowered by its use. Providing groups of users with the means of tailoring groupware in the wider context of group work may be the answer. This paper introduces our vision for tailoring group wo...
Conference Paper
Full-text available
Integration of different hypertext domains is a relatively new concern to the hypertext community. This paper presents an integrative design of graphical user interfaces of hypermedia systems. This design embraces features from navigational, spatial, taxonomic, and workflow hypertexts. The result is a visual hypertext with a rich set of visual comp...
Conference Paper
Full-text available
The objective of this workshop was to discuss current tools and environments for learning object-oriented concepts and to share ideas and experiences about the usage of computer support to teach the basic concepts of object technology. Workshop participants presented current and ongoing research. During the discussions the participants developed a...
Article
Designing virtual environments is not an easy task because of the number of activities to coordinate. Describing the virtual space, designing the inhabiting objects, and defining the behaviour of rooms, objects and users according to their surrounding context are some of them. Focusing on MOO environments, this paper describes a simple object-orien...
Conference Paper
Full-text available
Network-based computer environments emulating selected aspects of the physical world and allowing interaction among their human users first appeared in the late 1970s. These environments implemented a networked version of a role-playing fantasy game known as Dungeons and Dragons, hence their acronym MUD (Multi-user Dungeons). When it became obvious...
Conference Paper
Full-text available
In this paper we describe a learning environment that combines usual features of object oriented programming environments with visualisation and animation of object-oriented applications. The purpose of this learning tool is to improve students' mental models of object-oriented systems.
Conference Paper
Undergraduate courses on object-oriented technology at Universidad Nacional de La Plata place special emphasis on design. By concentrating on design we ensure that students ending these courses are object-oriented modelers more than programmers. Programming activities also have an important role: to give students hands-on experience. After five sem...
Conference Paper
Full-text available
Groupware must deal with a myriad of concerns. Some of them are typical of “conventional” software while others are idiosyncratic of CSCW applications (e.g., awareness). We claim that separating concerns fosters tailorability. While existing approaches for groupware design deal with the basic problem of separation of concerns (e.g., using well-know...
Article
Full-text available
Resumen Teniendo en cuenta el gran avance de las intercomunicaciones y de las herramientas informáticas existentes para tales propósitos, hay una herramienta que no evolucionó a la par del resto, el chat. El chat es la herramienta mas popularmente utilizada para el sustento de actividades de grupo distribuida así como en el aprendizaje asistido por...
Article
Full-text available
This report summarizes the results of the seventh workshop in a series of workshops on learning object-oriented concepts. The focus of this workshop was on (computer-aided) support for the teaching and learning of basic object-oriented concepts.
Article
An course on object-oriented (OO) design in the first academic year includes basic designprinciples that students learn at the same time than OO programming. Following, when they arefaced with their first design problems, they do not have enough programming experience toforget low-level problems and reach a higher level of abstraction.Students lear...