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Publications

Publications by Carla Pereira

2017

Semantic integration of conceptual models

Authors
Costa, L; Sousa, C; Pereira, C;

Publication
Advances in Intelligent Systems and Computing

Abstract
In a collaborative conceptualisation process, the existence of several solutions for a given domain is a very common problem. Given this, specialists must reach a consensus on the concepts that will encompass the final solution. Therefore, this work aims to provide a tool for the integration of conceptual models in order to help specialists during the negotiation phase of developing the final shared model. This approach analyses the concepts of two models and shows the similar concepts to the specialists. The semantic similarity is obtained after three stages, namely: normalization, syntax analysis and semantic analysis. To evaluate the proposed approach, the values of precision and recall measures were calculated in two practical application scenarios. The obtained results proved to be better when compared to the existing tools when applied to semi-formal models (conceptual maps), and very close to the best tools focused on formal models (ontologies) integration. © Springer International Publishing AG 2017.

2014

Sharing through Collaborative Spaces: Enhancing Collaborative Networks Interoperability

Authors
Sousa, C; Pereira, C;

Publication
COLLABORATIVE SYSTEMS FOR SMART NETWORKED ENVIRONMENTS

Abstract
Within collaborative networks, information sharing and knowledge creation are the main drives for value creation, wherever collaborative spaces (CS) has been used as the means to enable collaboration among the different social actors involved. Despite of technological availability, CS still a challenge in practice, mainly due to the lack of methods to support its development and to its tight coupling with the collaboration model adopted by the network. Thus, the main focus of this paper in on enhancing information sharing through the design of what we call agnostic collaborative spaces (ACS), supported by linked data approaches. Beyond this new perspective over CS, it is discussed a technological solution through which ACS are implemented.

2013

Supporting conceptualisation processes in collaborative networks: a case study on an R&D project

Authors
Pereira, C; Sousa, C; Soares, AL;

Publication
INTERNATIONAL JOURNAL OF COMPUTER INTEGRATED MANUFACTURING

Abstract
The development of new products or processes involves the creation, re-creation and integration of conceptual models from the related scientific and technical domains. Particularly, in the context of collaborative networks of organisations (CNO) (e.g. a multi-partner, international project) such developments can be seriously hindered by conceptual misunderstandings and misalignments, resulting from participants with different backgrounds or organisational cultures, for example. The research described in this article addresses this problem by proposing a method and the tools to support the collaborative development of shared conceptualisations in the context of a collaborative network of organisations. The theoretical model is based on a socio-semantic perspective, while the method is inspired by the conceptual integration theory from the cognitive semantics field. The modelling environment is built upon a semantic wiki platform. The majority of the article is devoted to developing an informal ontology in the context of a European R&D project, studied using action research. The case study results validated the logical structure of the method and showed the utility of the method.

2015

An information system for the cutting stock problem with optimization of retail materials in stock

Authors
Mendes, J; Fernandes, P; Pereira, CS;

Publication
2015 10th Iberian Conference on Information Systems and Technologies, CISTI 2015

Abstract
Considering the new paradigm in the industry, where clients request small amounts of a growing range of products, the times of crisis and the fierce competition for businesses survival, it is crucial for Organizations to be able to reduce the waste of raw materials. In the manufacturing industry, the waste of materials could be minimized with the introduction of decision support systems in the process. In this paper we propose an information system that enables the optimization of purchases and consumption of materials, promoting waste reduction and boosting profitability. © 2015 AISTI.

2015

An Information System for Management and Optimization of Materials in the Wood Industry

Authors
Mendes, J; Oliveira, O; Pereira, CS; Fernandes, P;

Publication
NEW CONTRIBUTIONS IN INFORMATION SYSTEMS AND TECHNOLOGIES, VOL 1, PT 1

Abstract
Considering the new paradigm in the industry, where clients request small amounts of a growing range of products, the times of crisis and the fierce competition for businesses survival, it is crucial for Organizations to be able to reduce the waste of raw materials. This waste could be minimized with the introduction of decision support systems in the process. In this paper we propose an information system that enables the optimization of purchases and consumption of materials, promoting waste reduction and boosting profitability.

2013

BTTE - An automated timetabling software for Higher Education

Authors
Fernandes, P; Barbosa, A; Pereira, CS;

Publication
PROCEEDINGS OF THE 2013 8TH IBERIAN CONFERENCE ON INFORMATION SYSTEMS AND TECHNOLOGIES (CISTI 2013)

Abstract
Throughout an academic year, in every Educational Institution, a considerable number of days and human resources are spent trying to manually perform a task that can be automated and optimized - the creation of timetables. In a time where the need to reduce costs has become part of the day to day reality of all Educational Institutions, it is unthinkable to continue working with this kind of approach. The automatic creation of timetables for Education is one of the most studied problems by the scientific community. However, almost all studies have been based on very simplified models of reality, not having thus a practical application. This paper presents an automated and optimized generator of timetables and the results obtained with its use under real conditions.

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