2025
Autores
da Silva, JP; Nogueira, AR; Pinto, J; Curral, M; Alves, AC; Sousa, R;
Publicação
EXPERT SYSTEMS
Abstract
Integrating Industry 4.0 and Quality 4.0 optimises manufacturing through IoT and ML, improving processes and product quality. The primary challenge involves identifying patterns in computer numerical control (CNC) machining time-series data to boost manufacturing quality control. The proposed solution involves an experimental study comparing one-class and binary classification algorithms. This study aims to classify time-series data from CNC turning machines, offering insight into monitoring and adjusting tool wear to maintain product quality. The methodology entails extracting spectral features from time-series data to train both one-class and binary classification algorithms, assessing their effectiveness and computational efficiency. Although certain models consistently outperform others, determining the best performing is not possible, as a trade-off between classification and computational performance is observed, with gradient boosting standing out for effectively balancing both aspects. Thus, the choice between one-class and binary classification ultimately relies on dataset's features and task objectives.
2025
Autores
Moreira, AC; da Costa, RA; de Sousa, MJN;
Publicação
JOURNAL OF HOSPITALITY & TOURISM RESEARCH
Abstract
As storytelling influences consumer attitudes and opinions, conditioning the tourist experience by appealing to the imagination, this paper reviews the literature covering the analysis of 66 papers that focus on the storytelling of the visitor/tourist as the main subject. The article is divided into four main themes: (a) storytelling as a tool to attract tourists; (b) the role of the storyteller; (c) the tourist as a storyteller; and (d) what makes a good story. The Hoshin Kanri Matrix was used to showcase each of the main themes. Although storytelling has been widely used to attract tourists, it is crucial that tourist-based storytelling can be a credible substitute for destination-based storytelling, as empathy, authenticity and the emotional attachment of tourists as storytellers play an important role as good stories, transforming and co-creating their experiences that emerge from the interaction of tourists, residents, and intermediaries.
2025
Autores
Rogers, TB; Meneveaux, D; Ammi, M; Ziat, M; Jänicke, S; Purchase, HC; Radeva, P; Furnari, A; Bouatouch, K; de Sousa, AA;
Publicação
VISIGRAPP (3): VISAPP
Abstract
2025
Autores
Camargo Pimentel, AP; Motta, C; Correia, A; De Souza, JM; Schneider, D;
Publicação
2025 28th International Conference on Computer Supported Cooperative Work in Design (CSCWD)
Abstract
2025
Autores
Viana, D; Teixeira, R; Soares, T; Baptista, J; Pinto, T;
Publicação
PROGRESS IN ARTIFICIAL INTELLIGENCE, EPIA 2024, PT II
Abstract
This study explores models for synthetic data generation of time series. In order to improve the achieved results, i.e., the data generated, new ways of improvement are explored and different models of synthetic data generation are compared. The model addressed in this work is the Generative Adversarial Networks (GANs), known for generating data similar to the original basis data through the training of a generator. The GANs are applied using the datasets of Quinta de Santa Barbara and the Pinhao region, with the main variables being the Average temperature, Wind direction, Average wind speed, Maximum instantaneous wind speed and Solar radiation. The model allowed to generate missing data in a given period and, in turn, enables to analyze the results and compare them with those of a multiple linear regression method, being able to evaluate the effectiveness of the generated data. In this way, through the study and analysis of the GANs we can see if the model presents effectiveness and accuracy in the synthetic generation of meteorological data. With the proper conclusions of the results, this information can be used in order to improve the search for different models and the ability to generate synthetic time series data, which is representative of the real, original, data.
2025
Autores
Rogers, TB; Meneveaux, D; Ammi, M; Ziat, M; Jänicke, S; Purchase, HC; Radeva, P; Furnari, A; Bouatouch, K; de Sousa, AA;
Publicação
VISIGRAPP (2): VISAPP
Abstract
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