63 documents found, page 1 of 7
Gestão de Recursos Hídricos no Limiar do Séc. XXI
Pinheiro, PauloO autor faz uma análise comparativa das disponibilidades e usos da água em Portugal e em outros países da União Europeia, demonstrando que o nosso país não é, por norma, carente em recursos hídricos, embora em certas ocasiões e zonas tenham surgido problemas quer com a quantidade quer com a qualidade destes recursos. O autor apresenta três razões para este tipo de situações e aponta as medidas que em seu entend...
A machine learning framework for uplift modeling through customer segmentation
Pinheiro, Paulo; Cavique, LuísIn uplift modeling, the goal is to identify high-value customers based on persuadable customers, those who make a purchase only if contacted. To achieve this, uplift modeling combines machine learning techniques with causal inference, allowing businesses to refine their customer targeting strategies and focus efforts where they are most profitable. This study proposes a practical and reproducible two-phase proc...
Knowledge management and spirituality in higher education institutions: a new c...
Neves, Carla C.T.; Marchant-Pérez, Paula F.; Pinheiro, PauloBased on the existing definitions in the literature on knowledge management and spirituality for other organizations, this study aims to reflect on how Higher Edu-cation Institutions (HEIs) face issues related to knowledge management and spirituality in the workplace. A qualitative methodology was used to achieve the goal with data collected from interviews with higher education teachers. The conclusion shows t...
Data science maturity model: from raw data to pearl’s causality hierarchy
Cavique, Luís; Pinheiro, Paulo; Mendes, Armando B.Data maturity models are an important and current topic since they allow organizations to plan their medium and long-term goals. However, most maturity models do not follow what is done in digital technologies regarding experimentation. Data Science appears in the literature related to Business Intelligence (BI) and Business Analytics (BA). This work presents a new data science maturity model that combines prev...
Large language model for querying databases in Portuguese
Figueiredo, Lourenço; Pinheiro, Paulo; Cavique, Luís; Marques, NunoThis study introduces a system that helps non-expert users find information easily without knowing database languages or asking technicians for help. A specific domain is explored, focusing on a subscription-based sports facility, which serves as an open-source version of a real case study. Utilizing the star schema, the available data in the database is structured to provide accessibility through Portuguese Na...
The Friends of Sea Turtles Programme of the TAMAR/ICMBio Project and the guest ...
Pinheiro, Paulo; Cardozo Moreira, Jasmine; Robles, Rafael; Ferrari do Vale, TatianeMore than just provide hosting services, hotels, lodgings or other typologies, can be transmitters of information of the settings. The bed and breakfast /inns on Fernando de Noronha island (a brazilian archipelago), are a kind of lodging that use ¨dolphins¨and not ¨stars¨to classificate. At this different kind of lodging, the Tamar/ICMBio Project, a Brazilian conservation project engaged in the preservati...
Swimmer dropout rate: a survival analysis
Sobreiro, Pedro; Silva, A.; Conceição, Ana; Louro, Hugo; Pinheiro, Paulo; Guedes de Carvalho, PedroThe length of time that a swimmer frequents a particular sports facility, using the records held by the facilities have often been under-used. We examined various behavioral variables associated with time of attendance until the point of dropout using swimmers’ records. 6,749 swimmers were used in this study. The survival analysis focused on the time interval between the moment they became a customer until eith...
Manual de Boas Práticas do Saramugo e de Rios Temporários
Matono, Paula; Da Silva, Janine; Bernardo, João; Costa, Ana Manuel; Fragoso, Sonia; Roque, Luisa; Pinheiro, Paulo; Almeida, João; Ilhéu, MariaEste Manual de Boas Práticas foi elaborado no âmbito do Programa LIFE + “Conservação do Saramugo, Anaecypris hispanica, na bacia do Guadiana (Portugal)”, ou LIFE Saramugo (LIFE13 NAT/PT/000786). O Projeto visa salvaguardar a conservação deste peixe nativo e endémico das bacias hidrográficas dos Rios Guadiana e Guadalquivir, que está atualmente “Criticamente em Perigo” em Portugal e incluído no Anexo II e IV da ...
Telco customer churn analysis: measuring the effect of different contracts
Pinheiro, Paulo; Cavique, LuísCustomer retention is nowadays a challenge that requires concrete and personalized actions. Traditional data mining studies focused on predictive analytics, neglecting the business domain. This work aims to present an actionable knowledge discovery based on specific, actionable attributes and measuring of their effects. It is common to use matching, and propensity score approaches in healthcare to evaluate caus...
Uplift modeling using the transformed outcome approach
Pinheiro, Paulo; Cavique, LuísChurn and how to deal with it is an essential issue in the telecommunications sector. Within the scope of actionable knowledge, we argue that it is crucial to find effective personalized interventions that can lead to a reduction in dropouts and that, at the same time, make it possible to determine the causal effect of these interventions. Considering an intervention that encourages clients to opt for a longer-...