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Introduction
Ana Casali received her Ph.D. in Information Technologies at the University of Girona, Spain, and a degree in mathematics at Universidad Nacional de Rosario (UNR), Argentina. She is the head of the Computer Science Department since 2007 and a professor at FCEIA-UNR, since 1991. Also, she is a researcher at the French Argentine International Center for Information and Systems Sciences (CIFASIS). She has worked in several international cooperation research projects, and her research interests include agent architectures, knowledge representation, approximate reasoning, negotiation, recommender systems and its applications to education.
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November 2008 - present
August 2007 - present
Publications
Publications (94)
The COVID-19 pandemic brought about profound changes in social and professional contexts. Schools and universities all over the world were closed to curb the contamination. In a short period, many educators were forced to reinvent their classes in a non-classroom mode, mediated by technology. This scenario of overwork can lead educators to stress,...
This article describes an information retrieval system with entity query expansion by relevance feedback.
The performance of the system is tested assuming its usage as a support tool for lawyers constructing a legal
framework for a case. The objective is to improve the precision of results when searching for relevant
jurisprudence. For this, the en...
Sharing research data can generate both social and economic benefits and serves as a record of academic activity as evidence of research work. In turn, the availability of the data allows the validation, verification, and replication of research. On the other hand, at the individual level, sharing our data can provide greater impact and visibility...
Se presenta una línea de investigación sobre la didáctica de la Programación en distintos niveles educativos, con especial atención a la formación de formadores. Las estrategias utilizadas combinan un enfoque desconectado (unplugged) con actividades que implican la programación de computadoras y otros dispositivos. Por un lado, se presenta el traba...
Se propone un sistema de búsqueda semántico que expande la
consulta del usuario mediante la retroalimentación por relevancia. Este sistema
es aplicado al dominio legal, en particular al derecho civil, para mejorar
la precisión de los resultados que puede encontrar un abogado en su búsqueda
de jurisprudencia relevante para la construcción del marco...
Es sabido que América Latina es la región más desigual del planeta. Para hacer frente a la realidad, una de las cuestiones clave es impulsar la colaboración en la región, que permitan que la innovación y el conocimiento sean instrumentos fundamentales para erradicar la pobreza, combatir el hambre y mejorar la salud, así como para alcanzar un desarr...
La pandemia COVID-19 ha provocado cambios profundos en toda la sociedad. A partir de las medidas de aislamiento adoptadas, todo el sistema educativo basado fundamentalmente en la modalidad presencial, se ha visto obligado a sostener el proceso de enseñanza y aprendizaje de forma virtual. Sin embargo, la mayoría de los profesores no estaban preparad...
La formación docente en didáctica de las Ciencias de la Computación resulta una necesidad imperiosa en nuestro país, fundamental para el cumplimiento de las directrices establecidas por los “Núcleos de Aprendizajes Prioritarios de Educación Digital, Programación y Robótica”, que implican una introducción de estos contenidos en todos los niveles edu...
La formación docente en didáctica de las Ciencias de la Computación resulta una necesidad imperiosa en nuestro país, fundamental para el cumplimiento de las directrices establecidas por los “Núcleos de Aprendizajes Prioritarios de Educación Digital, Programación y Robótica”, que implican una introducción de estos contenidos en todos los niveles edu...
En la ingeniería legal se necesitan de agentes artificiales con la capacidad de extraer conocimiento y patrones dentro de documentos deíndole legal con el propósito de diseñar aplicaciones que asistan a profesionales a realizar determinadas tareas. Muchas de éstas se deben realizar periódicamente, en donde se recuperan y analizan cientos de normati...
This paper presents the design, development and preliminary results of the first specialization in Computer Science for the primary level, approved by the Ministry of Education of Santa Fe province. The “Higher Level Teaching Specialization in Didactics of Computing Science: Learning and Teaching Computational Thinking and Programming at the Primar...
En este trabajo se presenta el diseño y desarrollo de la primera especialización para el nivel primario en Ciencias de la Computación aprobada por el Ministerio de Educación de la provincia de Santa Fe. La "Especialización Docente de Nivel Superior en Didáctica de las Ciencias de la Computación" plantea la formación de docentes del nivel primario e...
En este trabajo se presenta una línea de investigación orientada al desarrollo de dispositivos para la formación docente del nivel primario en Pensamiento Computacional y Programación, combinando el enfoque desconectado con actividades que impliquen el uso de computadoras y otros dispositivos. Como una primera instancia de formación se presenta el...
Computational thinking is nowadays being widely adopted and investigated. Educators and researchers are using two main approaches to teach these skills in schools: with computer programming exercises, and with unplugged activities that do not require the use of digital devices or any kind of specific hardware. While the former is the mainstream app...
O presente artigo apresenta uma proposta metodológica para construção doPensamento Computacional através do desenvolvimento de games. Considerando que no Brasil o Pensamento Computacional não está inserido como disciplina na Educação Básica, a prática pedagógica foi desenvolvida através de um curso ofertado como atividade extraclasse, destinado a e...
The importance of negotiation has increased in the last years as a relevant interaction to solve conflicts in multiagent systems. Although there are many different scenarios, a typical negotiating situation involves two cooperative agents that cannot reach their goals by themselves because they do not have some resources needed to reach such goals....
The learning objects recommending systems designed in the last decade employ different recommendation techniques, which mainly use collaborative filtering and content-based filtering. This paper aims to analyze a new recommendation approach, that has not been yet applied to learning objects communities, called critiquing-based recommendation. This...
The enormous growth of learning objects on the internet and the availability of preferences of usage by the
community of users in the existing learning object repositories have opened the possibility of testing the efficiency of different techniques on recommending learning materials to the users of these communities. In this work, we focus on some...
Computers cause an impact in almost every single aspect of our lives, however, unfortunately, schools have not been able to keep up with this irreversible evolution. The simple use of technological apparatuses in the classroom does not guarantee the improvement of the learning process, however it can be the medium through which the students find th...
The enormous growth of learning objects on the internet and the availability of preferences of usage by the community of users in the existing learning object repositories have opened the possibility of testing the efficiency of different techniques on recommending learning materials to the users of these communities. In this work, we focus on some...
The present editorial introduces a special issue of the IEEE-RITA journal devoted to Strategies to Improve the Usability of Learning Object Repositories (LORs). This special issue is sponsored by the Ibero-American Program of Science and Technology for Development (CYTED) under the scope of the RIURE network (Ibero-American Network for Usability Ed...
This paper presents an assistant to populate Institutional Repositories. This tool can detect all educational digital objects in text format that are already published on institutional websites and can be uploaded to a repository. This recopilation is a tedious task and is usually performed manually. In this paper we propose a system architecture f...
En este trabajo se presenta un sistema catalogador de documentos mediante el uso de vocabulario controlado representado mediante ontologías. Este sistema puede asistir en la carga de recursos educativos en un repositorio, brindando sus palabras claves. En esta primera propuesta, el dominio de interés para la clasificación es el de las Ciencias de l...
Resumen La naturaleza de los sistemas multiagente hace propicia la apa-rición de conflictos sobre las creencias y los intereses de los agentes que interactúan en el sistema. La negociación automática es un método que se utiliza para resolver estos conflictos en sistemas multiagente. Las platafor-mas de negociación permiten probar y evaluar distinto...
Negotiation is an interaction that happens in multi-agent systems when agents have conflicting objectives and must look for an acceptable agreement. A typical negotiating situation involves two agents that cannot reach their goals by themselves because they do not have some resources they need or they do not know how to use them to reach their goal...
This paper presents an assistant to populate Institutional Repositories. This tool can detect all educational digital objects in text format that are already published on institutional websites and can be uploaded to a repository. This recopilation is a tedious task and is usually performed manually. In this paper we propose a system architecture f...
Resumen En este trabajo se presenta una línea de investigación orientada hacia el desarrollo de distintas herramientas informáticas que ayuden a la gestión de repositorios de objetos de aprendizaje. En este sentido se trabaja en dos aspectos fundamentales para mejorar su usabilidad. Un aspecto es dar soporte a las tareas de recopilación de document...
This article presents the results of a survey and qualitative study of needs and practices of open access scholarly works dissemination.The survey and study focused on different issues related to usability, navigation, and accessibility of institutional repositories, which have guided the design of an experimental prototype in the context of a regi...
This article describes the research project MAEOS, whose purpose is to model the organizational and strategic development of SMEs. The main objective of this project is to improve the efficiency and performance of business advice given to this kind of companies by establishing a set of methods and software tools for analysis and diagnosis. In order...
This paper presents a novel approach to the well-known
Knapsack problem, extending it as a bilateral negotiating problem with
default information where each of the two agents has a knapsack and
there is a set of items distributed between them. The agents can ex-
change items in order to reach their goal: fill their knapsacks with items
without exce...
This paper aims to provide the user selfarchiving of his/her Digital Learning Objects in an institutional repository. For this, the standard load flow of DSpace platform changes, proposing a new flow for the object repository so that it can be integrated a metadata extractor in this process. An open architecture for automatic metadata extraction is...
A typical negotiation situation involves two coopera-tive agents that own objects and have the need of exchanging them in order to achieve their goals. Usually, objects have different characteristics or features that are key to allowing or not an agent to achieve his goal. Most of the existing approaches assume that the agents have complete informa...
To populate Institutional Repositories, it is necessary to apply
appropriate policies and strategies for dissemination and it is
important to develop tools to detect all educational digital objects
that are already published on institutional web sites that could be
uploaded to a repository. This recopilation is a tedious task and
is usually perform...
Resumen Se presentan diversos proyectos que pertenecen a una común línea de investigación orientada hacia el desarrollo de distintas herramientas informáticas que ayuden a la gestión de repositorios de objetos de aprendizaje. Los objetivos principales son: a) Facilitar el almacena-miento y búsqueda de información por parte del usuario, y b) Dar sop...
Actualmente la Inteligencia Artificial es un area de la ciencia de gran interes por ser un area multidiciplinaria donde se realizan sistemas que tratan de hacer tareas y resolver problemas como lo hace un humano, asi mismo se trata de simular de manera artificial las formas del pensamiento y como trabaja el cerebro para tomar desiciones. Aunque en...
![Fig. 2. Diagram of an AgentSpeak (L) agent interpreter (Source: [1])](profile/Ana-Casali/publication/271766578/figure/fig1/AS:295077491560448@1447363364095/Diagram-of-an-AgentSpeak-L-agent-interpreter-Source-1_Q320.jpg)
The Procedural Reasoning Systems (PRS) are one of the best implementations of the family of BDI agents (B: Belief, D: Desire, I: Intention). In this paper we present an extension of PRS to allow to create more flexible agents capable to represent the uncertainty of the environment and different relevance degrees in the agent's plans. The proposed e...
Hasta el momento, las mejores implementaciones de agentes de la familia del modelo BDI (B: Belief, D: Desire, I: Intention) son los llamados Sistemas de Razonamiento Procedural, PRS (Procedural Rea-soning Systems). En este trabajo se plantea una extensión para permitir generar agentes más flexibles, que puedan representar la incertidumbre del entor...
un primer prototipo experimental de Repositorio y de las estrategias que posibiliten a una apropiación activa de los repositorios por parte de la comunidad académica regional. Palabras claves: Publicaciones en Acceso Abierto, Repositorios, Encuestas a Docentes, Centro-Este de Argentina. INTRODUCCIÓN El desarrollo de Repositorios Institucionales (RI...
Resumen Un escenario típico de negociación involucra dos agentes co-operativos que poseen recursos y tienen la necesidad de realizar un inter-cambio para alcanzar sus objetivos. Los recursos tienen características que pueden ser determinantes para alcanzar o no, sus metas. Los agentes conocen con certeza tanto sus recursos como las características...
In this paper we propose to facilitate the load process of educational digital objects in repositories by modifying the standard load flow of platforms such as DSpace. Also, we propose an architecture of a Wizard for automatically extracting some metadata of documents. This metadata will be validated by the user in the describing process of an obje...
Resumen: El artículo presenta resultados del relevamiento y diagnóstico cualitativo realizado sobre necesidades y prácticas de publicación en acceso abierto y diversas problemáticas de usabilidad, navegación y accesibilidad de los repositorios institucionales (utilizando tecnología DSpace) que han guiado el diseño de un primer prototipo experimenta...
The production of high-quality open textbooks requires the collaboration of different contributors. This work conducts a comparative analysis of the six different collaborative platforms for the production of books. To be able to compare the platforms, several dimensions extracted from literature of collaborative writing and the requirements associ...
En este trabajo se presentan los resultados de una
consulta abierta en línea aplicada a profesores y
estudiantes de la Universidad Nacional de Rosario,
para evaluar su predisposición al uso y creación de
libros de texto abiertos en formatos digitales, como así
también las preferencias que tienen con respecto a
estos libros. Esta encuesta se realizó...
En este trabajo se presentan los resultados de
una consulta abierta en línea aplicada a
profesores y estudiantes de la Universidad
Nacional de Rosario, para evaluar su
predisposición al uso y creación de libros de
texto abiertos en formatos digitales, como así
también las preferencias que tienen con
respecto a estos libros. Esta encuesta se
realizó...
In the last years, the development of different Repositories of Learning Objects has been in-creased. Users can retrieve these resources for reuse and personalization through searches in web repositories. The importance of high quality metadata is key for a successful retrieval. Learning Objects are described with metadata usually in the standard I...
Cite as: Silveira et al. (2013). A digital ecosystem for the collaborative production of open textbooks: The LATIn methodology. Executive Summary Access to books in higher education is an issue to be addressed, especially in the context of un-derdeveloped countries, such as those in Latin America. More than just financial issues, cultural aspects a...
![Fig. 1. Conceptual elements of an ABN agent (Rahwan et al. [13])](profile/Ana-Casali/publication/264191070/figure/fig1/AS:295883347382272@1447555495293/Conceptual-elements-of-an-ABN-agent-Rahwan-et-al-13_Q320.jpg)
The importance of collaborative electronic textbooks in the context
of Open Educational Resources has been growing worldwide. This paper presents an state-of-the-art analysis of collaborative methodologies necessary for the shared creation of collaborative books, with a more specific attention given to open academic textbooks. This paper explore t...
Resumen En la última década, Internet se ha utilizado, entre otras cosas, como fuente de información educativa. Para ayudar en el almacenamiento, clasificación y reutilización de recursos educativos aparece el concepto de Objetos de Aprendizaje (OA), con el fin de clasificar el material educativo para proporcionar unidades modulares de aprendizaje...
We are interested in the specification and deployment of multi-agent systems, and particularly we focus on the execution of
agents. Along this research line, we have proposed a general model for graded BDI agents, specifying an architecture based on multi-context systems (MCSs) and able to deal with the environment uncertainty (via
graded beliefs)...
In this research note, we introduce a graded BDI agent development framework, g-BDI for short, that allows to build agents as multi-context systems that reason about three fundamental and graded mental attitudes (i.e. beliefs, desires and intentions). We propose a sound and complete logical framework for them and some logical extensions to accommod...
This chapter describes the development of a recommender system of learning objects. This system helps a user to find educational resources that are most appropriate to his/her needs and preferences. The search is performed in different repositories of learning objects, where each object has descriptive metadata. Metadata is used to retrieve objects...
En este trabajo se describe el desarrollo de un sistema recomendador de objetos de aprendizaje. Este sistema ayuda a un usuario a encontrar los recursos educativos que le sean más apropiados de acuerdo a sus necesidades y preferencias. La búsqueda se realiza en diferentes repositorios de objetos de aprendizaje, donde cada objeto tiene metadatos des...
In intentional agents, actions are derived from the mental attitudes and their relationships. In particular, preferences (positive
desires) and restrictions (negative desires) are important proactive attitudes which guide agents to intentions and eventually
to actions. In this paper we overview recent developments about a multi-context based agent...
In this paper a multiagent Tourism Recommender System is presented. This system has a multiagent architecture and one of its main agents, the Travel Assistant Agent (T-Agent), is modelled as a graded BDI agent. The graded BDI agent model allows us to specify an agent architecture able to deal with the environment uncertainty and with graded mental...
In this paper, a validation and an experimentation of the use of graded BDI agents is reported. This agent model has been proposed to specify agents ca- pable to deal with the environment uncertainty and with graded attitudes in an ef- ficient way. As a case study we focus on a Tourism Recommender,Agent specified using this agent model. The experim...
In intentional agents, actions are derived from the men- tal attitudes and their relationships. In particular, pref- erences (positive desires) and restrictions (negative de- sires) are important proactive attitudes which guide agents to intentions and eventually to actions. In this paper, we present a general logical framework to rep- resent and r...
In this paper, we use a graded BDI agent model based on multi-context systems to specify an architecture for a Travel Assistant Agent that helps a tourist to choose holiday packages. We outline the theories of the dierent contexts and the bridge rules and illustrate the overall reasoning process of our model.
En los últimos años se ha incrementado el diseño e implementación de sistemas multiagentes (MAS), para abordar el desarrollo de sistemas distribuidos complejos. Para dar un sustento formal a estos sistemas, se han propuesto distintas teorías y arquitecturas, entre ellas se ha destacado el modelo BDI presentado por Rao y George_. Para que la aplicac...
Resumen En este trabajo se propone una arquitectura multiagente para la recuperación de recursos educacionales, que ayude a los usuarios a encontrar cursos que se adecuen a sus características personales y aspectos culturales. En este trabajo, se considera como aspectos culturales a las características que permiten distinguir las preferencias de es...
In this research note, we introduce a graded BDI agent development framework, g-BDI for short, that allows to build agents as multi-context systems that reason about three fundamental and graded mental attitudes (i.e. beliefs, desires and intentions). We propose a sound and complete logical framework for them and some logical extensions to accommod...
In the recent past, an increasing number of multiagent sys- tems (MAS) have been designed and implemented to engineer complex distributed systems. Several previous works have proposed theories and architectures to give these systems a formal support. Among them, one of the most widely used is the BDI agent architecture presented by Rao and George....
The success of sustainable agroecosystems is closely linked to the availability of high quality information. This sort of information will optimize management and decision making, improving profits and lowering the agrochemicals impact in the agroecosystems. This is the aim of SITRAMA (Interactive System for Weed Management), a system that deals wi...
This work presents a multiagent architecture for web educational resources re-trieval that may help users to find courses according to their personal and cultural aspects. This multiagent platform includes several kinds of agents with different functionalities. We particularly model the Educational Resources Finder Agent as a Graded BDI Agent, whic...
In this Technical Report we describe EndoDiag II, a learning support system to endodontics diagnosis. This system has the goal of strengthen the students knowledge adquired through the clinical practice. EndoDiag II allows the student's training by the resolution of different clinical cases reflecting real situations of the professional practice. E...
In this work we propose a multiagent architecture for web educational resources retrieval that helps users to find courses according to their personal and cultural aspects. Cultural aspects are preferences and ways of behavior determined by the person's culture. In this work, the cultural aspects are just the features that distinguish between the p...
In this work we present a methodological framework to engineer graded BDI agent-based systems. The graded BDI agent model allows to specify an agent's architecture able to deal with the environment uncertainty and with graded mental attitudes. We work up previous approaches on software engineering process, adapting and extending them, in order to d...
In this work we propose a multiagent architecture for web educational resources retrieval that helps users to find courses according to their personal and cultural aspects. Cultural aspects are preferences and ways of behavior determined by the person's culture. In this work, the cultural aspects are just the features that distinguish between the p...
![Figure 2.3: Belief-accessible world (Source: [61]).](profile/Ana-Casali/publication/237333632/figure/fig3/AS:299353341218819@1448382806263/Belief-accessible-world-Source-61_Q320.jpg)
In the recent past, an increasing number of multiagent systems have been designed to engineer complex distributed systems. Among the proposed architectures, one of the most widely used is the BDI agent presented by Rao and George. We consider that in order to apply agents in real domains, it is important for the formal models to incorporate uncerta...
Resumen Esta línea de investigación trata el desarrollo de Sistemas de Información Inteligentes que asistan a un docente o a un alumno en la búsqueda de objetos de aprendizaje que le ayuden en el proceso educativo. Los objetos de aprendizaje son materiales digitales los que como unidad o agrupación permiten o facilitan alcanzar un objetivo educacio...
Hoy en día, muchos de nosotros podemos encontrarnos con situaciones como las que se relatan a continuación: compramos un producto a través del comercio electrónico, vía Internet y, sin solicitarlo, se nos ofrecen otros productos similares o complementarios al elegido; en una computadora en la que vemos los periódicos habitualmente, se nos brinda al...
En el dominio de la educación existe gran cantidad y diversidad de material que puede contribuir al proceso enseñanza-aprendizaje. La Web, herramienta fundamental para la recuperación de todo tipo de material, utilizando buscadores. problema de falta de estructura en la información. Hay formas de acceder a información más estructurada: utilizando r...
Es un programa multimedia de ayuda diagnóstica para endodoncistas. Para ingresar debe usarse el archivo _INICIAR. Universidad Nacional de Rosario. Secretaría de Ciencia y Tecnología. Facultad de Odontología y Facultad de Ciencias Exactas, Ingeniría y Agrimensura.
Este trabajo describe el desarrollo de un sistema basado en conocimiento de apoyo al diagnóstico de la patología pulpar y periapical denominado EndoDiag. El sistema utiliza técnicas de Ingeniería del Conocimiento y su objetivo es profundizar y jerarquizar el proceso de diagnóstico endodóntico. En la implementación de EndoDiag se ha volcado el conoc...
Recibido: Diciembre 2005 Aceptado: Marzo 2006 Aprender a diagnosticar correctamente es fundamental para la formación de los profesionales de la salud. Endodoncia, no es un área ajena a ello; por lo cual se implementó el sistema EndoDiag, para brindar un soporte informático en esta tarea. Esta herramienta informática es un sistema experto que guía a...
