2025
Autores
Nandi, S; Malta, MC; Maji, G; Dutta, A;
Publicação
KNOWLEDGE AND INFORMATION SYSTEMS
Abstract
Influential nodes are the important nodes that most efficiently control the propagation process throughout the network. Among various structural-based methods, degree centrality, k-shell decomposition, or their combination identify influential nodes with relatively low computational complexity, making them suitable for large-scale network analysis. However, these methods do not necessarily explore nodes' underlying structure and neighboring information, which poses a significant challenge for researchers in developing timely and efficient heuristics considering appropriate network characteristics. In this study, we propose a new method (IC-SNI) to measure the influential capability of the nodes. IC-SNI minimizes the loopholes of the local and global centrality and calculates the topological positional structure by considering the local and global contribution of the neighbors. Exploring the path structural information, we introduce two new measurements (connectivity strength and effective distance) to capture the structural properties among the neighboring nodes. Finally, the influential capability of a node is calculated by aggregating the structural and neighboring information of up to two-hop neighboring nodes. Evaluated on nine benchmark datasets, IC-SNI demonstrates superior performance with the highest average ranking correlation of 0.813 with the SIR simulator and a 34.1% improvement comparing state-of-the-art methods in identifying influential spreaders. The results show that IC-SNI efficiently identifies the influential spreaders in diverse real networks by accurately integrating structural and neighboring information.
2025
Autores
Couto, F; Malta, MC;
Publicação
HCI INTERNATIONAL 2024-LATE BREAKING PAPERS, PT I
Abstract
This paper contributes to developing a Method for Creating Persona Templates (MCPT), addressing a significant gap in user-centred design methodologies. Utilising qualitative data collection and analysis techniques, MCPT offers a systematic approach to developing robust and context-oriented persona templates. MCPT was created by applying the Design Science Research (DSR) methodology, and it incorporates multiple iterations for template refinement and validation among project stakeholders; all of the proposed steps of this method were based on theoretical contributions. Furthermore, MCPT was tested and refined within a real-life R&D project focusing on developing a digital platform e-marketplace for short agrifood supply chains in two iteration cycles. MCPT fills a critical void in persona research by providing detailed instructions for each step of template development. By involving the target audience, users, and project stakeholders, MCPT adds rigour to the persona creation process, enhancing the quality and relevance of personae casts. This paper contributes to the body of knowledge by offering an initial proposal of a comprehensive method for creating persona templates within diverse projects and contexts. Further research should explore MCPT's adaptability to different settings and projects, thus refining its effectiveness and extending its utility in user-centred design practices.
2013
Autores
Malta, Mariana Curado;
Publicação
Abstract
These files are the recordings and transcripts of 3 interviews made to 3 Dublin Core Application Profiles developers with the aim to understand the process of a DCAP development. These interviews are framed in a PhD project that has as goal the definition of a method for the development of Dublin Core Aplication Profiles. An Application Profile is a construct on the Semantic Web that enhances interoperability.
2013
Autores
Malta, Mariana Curado; Baptista, Ana Alice;
Publicação
Abstract
These are the results (datasets) of a study reported in the paper ``A panoramic view on Metadata Application Profiles of the last decade``.
2018
Autores
Malta, MC; Baptista, AA; Bermúdez Sabel, H; González Blanco, E;
Publicação
Proceedings of the International Conference on Dublin Core and Metadata Applications
Abstract
The development of Metadata Application Profiles is done in several phases. According to the Me4MAP method, one of these phases is the creation of the domain model. This paper reports the validation process of a domain model developed under the project POSTDATA - Poetry Standardization and Linked Open Data. The development of the domain model ran with two steps of construction and two of validation. The validation steps drew on the participation of specialists in European poetry and the use of real resources. On the first validation we used tables with information about resources related properties and for which the experts had to fill certain fields like, for examples, the values. The second validation used a XML framework to control the input of values in the model. The validation process allowed us to find and fix flaws in the domain model that would otherwise have been passed to the Description Set Profile and possibly would only be found after implementing the application profile in a real case.
2020
Autores
Baptista, Ana Alice; Branco, Pedro; Azevedo, Bruno; Oliveira e Sá, Jorge; Ribeiro, Ana Carolina Freitas; Malta, Mariana Curado;
Publicação
Abstract
Over 2.5 million scientific articles are published annually, totaling 6,849.32 per day in 2015; in 2018 this value was increased to over 3 million articles, totaling 8.219,18 per day [1]. Thus, finding the most relevant Research Outputs (ROs), such as articles, theses, patents, among others, is increasingly difficult due, in part, to the existing interfaces returning massive lists of results.
The project aims to develop and test a platform that incorporates social data for capturing various usage metrics to define a new metric that we call Social Scholarly Experience Metrics (SSEM) and a new visualization technique that, jointly, will support the fast access to find relevant ROs.
The access to the final selection minute is only available to applicants.
Please check the confirmation e-mail of your application to obtain the access code.