Nelson Baloian

University of Chile · Departamento de Ciencias de la Computación

Data Science and Reliable Machine Learning. Proceedings of CODASSCA 2024.

Distributed tracing is cutting-edge technology used for monitoring, managing, and troubleshooting native cloud applications. It offers a more comprehensive and continuous observability, surpassing traditional logging methods, and is indispensable for navigating modern complex software architectures. However, the sheer volume of generated traces is...

Continuous discovery and update of applications or their boundaries running in cloud environments in an automatic way is a highly required function of modern data center operation solutions. Prior attempts to address this problem within various products or projects were/are applying rule-driven approaches or machine learning techniques on specific...

Distributed tracing is a cutting-edge technology for monitoring, managing, and troubleshooting native cloud applications. It offers a more comprehensive and continuous observability, surpassing traditional logging methods, and is indispensable for navigating modern complex software architectures. However, the sheer volume of generated traces is sta...

Continuous discovery and update of applications or their boundaries running in cloud environments in an automatic way is a highly required function of modern data center ops solutions. Prior attempts to address this problem within various products or projects were/are applying rule-driven approaches or machine learning techniques on specific types...

In a vast majority of cases, remediation of IT issues encoded into domain-specific or user-defined alerts occurring in cloud environments and customer ecosystems suffers from accurate recommendations, which could be supplied in a timely manner for recovery of performance degradations. This is hard to realize by furnishing those abnormality definiti...

Remediation of IT issues encoded into domain-specific or user-defined alerts occurring in cloud environments and customer ecosystems in a vast majority of cases suffers from accurate recommendations which could be timely supplied for recovery of performance degradations. That, of course, is hard to realize through furnishing those abnormality defin...

We present a methodology to handle the problem of planning sales goals. The methodology supports the retail manager to carry out simulations to find the most plausible goals for the future. One of the novel aspects of this methodology is that the analysis is based not on current sales levels, as most previous works do, but on those in the future, m...

Scenario Generation Language (SGL) is a powerful tool that simplifies geospatial analysis and decision-making processes, removing the requirement for users to have expertise in GIS or SQL. However, users still need to understand the SGL grammar. This paper introduces a novel approach that utilizes GPT (Generative Pre-trained Transformer) - LLM (Lar...

The advent of digital communication technologies has notably fostered remote collaboration. While platforms like Zoom are prevalent, emerging Virtual Reality (VR) technologies like Meta Quest 2 introduce new dimensions for virtual collaboration. This study investigates whether VR-based group meetings are more conducive to participant engagement, mo...

This paper presents an overview of various types of virtual museums (ViM) as native artifacts or as digital twins (DT) of physical museums (PM). Depending on their mission and features, we discuss various enabling technologies and sensor equipment with their specific requirements and complexities, advantages and drawbacks in relation to each other...

Virtual Reality has been successfully used to implement highly motivating learning environments where learners interact with the represented environment using hand gestures. However, little has been done in order to study which are the most convenient gestures for implementing this interaction in order to discover good practices for HCI. This inves...

To create a geo-collaborative hyperhistory, physical areas associated with data and multimedia content are geolocalized over a map, from which links to other areas can be generated, which define paths of exploration of the hypernarrative. In this work in progress, we aim at facilitating the creation of geo-collaborative hyperstories, by redesigning...

Proceedings of the 3rd CODASSCA workshop on Data Science, Human-Centered Computing, and Intelligent Technologies.

This paper presents a survey of innovative concepts and technologies involved in virtual museums (ViM) that shows their advantages and disadvantages in comparison with physical museums. We describe important lessons learned during the creation of three major virtual museums between 2010 and 2020 with partners at universities from Armenia, Germany,...

Modern technologies and various domains of human activities increasingly rely on data science to develop smarter and autonomous systems. This trend has already changed the whole landscape of the global economy becoming more AI-driven. Massive production of data by humans and machines, its availability for feasible processing with advent of deep lea...

In most computer supported collaborative learning activities, the teacher monitors and/or reviews data generated by students and groups as they complete the learning tasks, in order to provide guidance and feedback. Without appropriate technological means that support the processes of collection and selection of students’ generated responses, these...

Foot traffic, conversion rate, and total sales during a period of time may be considered to be important indicators of store performance. Forecasting them may allow for business managers plan stores operation in the near future in an efficient way. This work presents a regression method that is able to predict these three indicators based on previo...

A Correction to this paper has been published: https://doi.org/10.1007/s00779-021-01528-1

The Journal of Universal Computer Science is a monthly peer-reviewed open-access scientific journal covering all aspects of computer science, launched in 1994, so becoming twenty-five years old in 2019. In order to celebrate its anniversary, this study presents a bibliometric overview of the leading publication and citation trends occurring in the...

Implicit HCI is about computers understanding the intentions and needs of the user and proactively triggering functions or adapting the interface to help users achieve their goals. In ubiquitous learning environments, this could mean that the software and hardware settings make relevant learning material available to students; activate proper learn...

Predicting an individual’s risk of getting a stroke has been a research subject for many authors worldwide since it is a frequent illness and there is strong evidence that early awareness of having that risk can be beneficial for prevention and treatment. Many Governments have been collecting medical data about their own population with the purpose...

Proceedings of the 2nd Workshop on Collaborative Technologies and Data Science in Smart City Applications (CODASSCA2020).

Although many authors have highlighted the importance of predicting people’s health costs to improve healthcare budget management, most of them do not address the frequent need to know the reasons behind this prediction, i.e., knowing the factors that influence this prediction. This knowledge allows avoiding arbitrariness or people’s discrimination...

Two approaches have traditionally been identified for developing artificial intelligence systems supporting decision-making: Machine Learning, which applies general techniques based on statistical analysis and optimization methods to extract information from a large amount of data looking for possible relations among them, and Expert Systems, which...

People’s health care cost prediction is nowadays a valuable tool to improve accountability in health care. In this work, we study if an interpretable method can reach the performance of black-box methods for the problem of predicting health care costs. We present an interpretable regression method based on the Dempster-Shafer theory, using the Evid...

Teachers of first courses in Computing face the problem of making slides showing data structures. Students must also show them in their assignments. Drawing them may not be the best choice. The Data Structures (DSTR) language proposed here is intended as an easy-to-use tool to describe those structures for visualization. A preliminary evaluation of...

Preparing a plan for reaction to a grave emergency is a significant first stage in disaster management. A group of experts can do such preparation. Best results are obtained with group members having diverse backgrounds and access to different relevant data. The output of this stage should be a plan as comprehensive as possible, taking into account...

The pedagogical usability is an important characteristic of applications that support learning as it relates to the added value students perceive while using it for learning. A good pedagogical usability means that an application has more chances to be accepted and used by the students thus raising the possibilities that students actually will lear...

Recently, two research networks crossed their paths at an exploratory bi-lateral Workshop in Armenia on Sept. 12-15, 2018, entitled "Collaborative Technologies and Data Science in Smart City Applications". This workshop has attracted 21 paper submissions which deal with the challenges mentioned above. The studies are in specialized areas and show n...

Storytelling has been used as a powerful methodology to design learning activities. By producing their own stories, students learn while developing artifacts, which can be shared with other peer learners generating a rich collaborative learning environment based on constructivism. Digital media and especially hypermedia have been successfully used...

In many engineering schools around the world, ethics is a compulsory subject. However, teaching ethics in engineering is not a simple duty, as engineering students usually attribute less value to learning ethics than to other subjects. Hereby, we report on our initial efforts towards developing a CSCL script for fostering meaningful ethical discuss...

Effective preparedness for reacting in case of a severe emergency requires that many experts with various backgrounds evaluate the possible scenarios and come up with a single, unified plan which considers all opinions. This is a typical collaborative decision-making scenario, characterized by a process cycle involving modelling the process, defini...

The main source and asset for making smart systems is data, which our information age made easily accessible. The next main challenge we face is to effectively and efficiently extract knowledge from huge amounts of data from heterogeneous sources to make the systems self-contained and autonomous.

Some work scenarios foster the adoption of people-driven, dynamic and geo-located processes. To support such scenarios, we suggest two fundamental changes in process structure and control. Regarding structure, we move away from traditional process models towards process contexts, which can be organized around geographical locations. Regarding contr...

This book constitutes the refereed proceedings of the 10th International Conference on Collaboration Technologies, CollabTech 2018, held in Costa de Caparica, in September 2018. The 12 full papers presented in this book together with 4 short papers were carefully reviewed and selected from 36 submissions. The papers focus on topics such as: Communi...

Virtual museums have been very popular since the early days of the World Wide Web and many scientific works have been published on this topic. Although the rich variety of possibilities for supporting collaboration among the users of virtual museums, today very few implementations offer support for such kind of activities. This paper aims at settli...

Teaching and learning in most current university lectures has remained unchanged for centuries and nowadays, large lecture classes are a fact at universities. Technologies such as Classroom Response Systems have been designed to ease the adoption of new pedagogical practice in these contexts; however, these pose technological, economic and pedagogi...

Reading comprehension is essential for students, because it is a predictor of their academic or professional success, however, it is challenging for many students, even more if they are part of large classrooms. This paper presents a work which uses Design-Based Research with the purpose of combining theories, methods and techniques of the educatio...

Students’ participation in traditional classroom settings may be hindered due to various reasons, which interrupt the class flow or cause distraction among the rest of the class members. To tackle that problem, we propose using applications based on touchless hand gestures (THG) that would allow students to interact from their own places. The feasi...

People who have to insert and adapt themselves to a different culture than the one where they grew up usually experience feelings related to anxiety and uncertainty. This is exactly the situation of the students who decide to go abroad to continue their education or make an internship in a foreign country. The number of these students has been cons...

There is consensus among curriculum developers of Business Schools that along with technical knowledge students should also be trained to acquire soft skills. Communication, collaboration, creativity, critical thinking and problem solving are mentioned by some authors as the most important skills for professionals of the 21st century to be successf...

This paper gives an overview on crowdsourcing and co-curation practices in virtual museums. Engaged nonprofessionals and specialists support curators in creating digital 2D or 3D exhibits, exhibitions and tour planning and in the enhancement of metadata using the Virtual Museum and Cultural Object Exchange Format (ViMCOX). ViMCOX is based on intern...

The wide availability of mobile devices like smartphones and tablets among students as well as the included positioning technologies, high definition cameras and other sensors, together with continuous Internet access bring many new opportunities for developing mobile applications supporting learning activities. However, there is an immense fragmen...

This book constitutes the refereed proceedings of the 8th International Conference on Collaboration Technologies, CollabTech 2016, held in Kanazawa, Japan, in September 2016. The 16 revised full papers presented together with 4 short papers and a keynote were carefully reviewed and selected from 48 submissions. The papers focus on the following to...

Size and evolution of current cities present a great challenge to their inhabitants to make them develop in a harmonious and sustainable way. People living in large cities find many obstacles to participate in the urban development decisions affecting them directly. A tool which supports citizens in gathering, combining and visualizing the informat...

Planning efficient public transport is a key issue in modern cities. When planning a route for a bus or the line for a tram or subway it is necessary to consider the demand of the people for this service. In this work we presented a method to use existing crowdsourcing data (like Waze and OpenStreetMap) and cloud services (like Google Maps) to supp...

This paper highlights and categorizes the rich metaphorical landscape of the modern virtual museum and laboratory realizations recently applied in various leisure, information, presentation and education contexts. It also presents several technical resolutions, from desktop systems to CAVE installations.

Situated learning stresses the importance of the context in which learning takes place. It has been therefore frequently associated with informal learning or learning outside the classroom. Therefore, this theory offers an excellent basis for developing applications supporting collaborative learning activities implementing seamless learning. In thi...

This paper gives an overview on crowdsourcing practices in virtual museums. Engaged nonprofessionals and specialists support curators in creating digital 2D or 3D exhibits, exhibitions and tour planning and enhancement of metadata using the Virtual Museum and Cultural Object Exchange Format (ViMCOX). ViMCOX provides the semantic structure of exhibi...

The Geo-collaboration term is applied to collaborative activities in which data and models used by participants are strongly related to geographical locations. There are many scenarios in which Geo-collaboration is used to support a collaborative decision making process. Some of these scenarios are city planning, developing evacuations for emergenc...

There is consensus among curriculum developers of Business Schools around the world that along with technical knowledge students should be trained to also acquire soft skills. Communication, collaboration, creativity, critical thinking and problem solving are mentioned by some authors as the most important for professionals of the 21st century to b...

In this work we present a study that documents how a blended learning environment could enhance students’ meaningful learning practicing 21st Century Skills. This study examines the outcomes of an experience done with 119 students of an undergraduate course on “Information Technology” for Business at a University level education. Students had to pr...

Many business schools around the world offer courses to train their students in acquiring so called “soft skills”, such as working in teams for decision making or sharing information to collaboratively solve complex problems. These courses often include learning activities where students are asked to generate ideas, discuss them, rank them and sele...

Participation is the cornerstone of any community. Promoting, understanding and properly managing it allows not only keeping the community sustainable, but also providing personalized services to its members and managers. This article presents a case study in which student participation in a course community was motivated using two different extrin...

There are several scenarios where business processes benefit by integrating spatial information; ie associating activities to specific geographical locations. This article discusses and proposes requirements for a system of Business Process Management of ad-hoc type, (ad-hoc BPM) geo-referenced, focusing on conflicts of coordinating activities that...

There are man scenarios in which business processes benefit from the integration of geographical information for its management. In this paper we discuss a set of requirements for ad-hoc geo-referenced Business Process Management (BPM), noting in particular the conflicts between spatial and task dependencies when coordinating activities. We suggest...

This special number of the IEEE Latin America Transactions includes a selection of the best papers presented at the 20th Conference of the Collaboration Researchers International Working Group, which took place in Santiago City, Chile in September 2014.

A family community is usually composed of three generations: elders, adults and young people. During the last years, adults and young people tend to use social media to support the interaction among them. However, this tendency is isolating the elderly, because they are usually reluctant to use computing technology. Social isolation negatively impa...

Several researchers have identified the design of collaborative systems as a particularly challenging task, because it has to consider services that are not easily identifiable by software designers. The systems that support the activities of partially virtual communities (PVC) are not an exception. Typically, designers of PVC supporting systems ar...

It is well-known that physical activities contribute to keep the people healthy. However, the modern life style impacts negatively on the amount of physical activity that we do during the day. Many times the people do not perform enough exercise because they are not aware of the amount of physical activity that they have done. In order to make the...

Cities are growing and the number people using smartphone’s and tablets it also increasing. There are many applications that collects data from users and its context. Some of these applications are producing complete and useful databases that can be used to support some cites problems. In particular spatial planning problems like transportation net...

Falls in older adults are not only frequent but also potentially disabling for them. Detecting and preventing these falls have an important impact in the life of the elderly people. This paper presents the architecture of a pervasive system designed to perform early detection of older adults in risk of falling or fell down. The system notifies the...

There are many scenarios in which business processes will benefit from the integration of geographical information for its management. In this paper we discuss a set of requirements for ad-hoc geo-referenced Business Process Management (BPM), noting in particular the conflicts between spatial and task dependencies when coordinating activities. We s...

Geographical Information systems have been frequently used to support decision processes, especially those involving emergency management. When planning the measures in case of an emergency experts must evaluate and compare many scenarios which arise from different hypotheses about where people may be at the time of the emergency and how will they...