9 results on '"Dalmas, B"'
Search Results
2. Process mining for healthcare: Characteristics and challenges
- Author
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Munoz-Gama, J, Martin, N, Fernandez-Llatas, C, Johnson, OA, Sepulveda, M, Helm, E, Galvez-Yanjari, V, Rojas, E, Martinez-Millana, A, Aloini, D, Amantea, IA, Andrews, R, Arias, M, Beerepoot, I, Benevento, E, Burattin, A, Capurro, D, Carmona, J, Comuzzi, M, Dalmas, B, de la Fuente, R, Di Francescomarino, C, Di Ciccio, C, Gatta, R, Ghidini, C, Gonzalez-Lopez, F, Ibanez-Sanchez, G, Klasky, HB, Kurniati, AP, Lu, X, Mannhardt, F, Mans, R, Marcos, M, de Carvalho, RM, Pegoraro, M, Poon, SK, Pufahl, L, Reijers, HA, Remy, S, Rinderle-Ma, S, Sacchi, L, Seoane, F, Song, M, Stefanini, A, Sulis, E, ter Hofstede, AHM, Toussaint, PJ, Traver, V, Valero-Ramon, Z, van de Weerd, I, van der Aalst, WMP, Vanwersch, R, Weske, M, Wynn, MT, Zerbato, F, Munoz-Gama, J, Martin, N, Fernandez-Llatas, C, Johnson, OA, Sepulveda, M, Helm, E, Galvez-Yanjari, V, Rojas, E, Martinez-Millana, A, Aloini, D, Amantea, IA, Andrews, R, Arias, M, Beerepoot, I, Benevento, E, Burattin, A, Capurro, D, Carmona, J, Comuzzi, M, Dalmas, B, de la Fuente, R, Di Francescomarino, C, Di Ciccio, C, Gatta, R, Ghidini, C, Gonzalez-Lopez, F, Ibanez-Sanchez, G, Klasky, HB, Kurniati, AP, Lu, X, Mannhardt, F, Mans, R, Marcos, M, de Carvalho, RM, Pegoraro, M, Poon, SK, Pufahl, L, Reijers, HA, Remy, S, Rinderle-Ma, S, Sacchi, L, Seoane, F, Song, M, Stefanini, A, Sulis, E, ter Hofstede, AHM, Toussaint, PJ, Traver, V, Valero-Ramon, Z, van de Weerd, I, van der Aalst, WMP, Vanwersch, R, Weske, M, Wynn, MT, and Zerbato, F
- Abstract
Process mining techniques can be used to analyse business processes using the data logged during their execution. These techniques are leveraged in a wide range of domains, including healthcare, where it focuses mainly on the analysis of diagnostic, treatment, and organisational processes. Despite the huge amount of data generated in hospitals by staff and machinery involved in healthcare processes, there is no evidence of a systematic uptake of process mining beyond targeted case studies in a research context. When developing and using process mining in healthcare, distinguishing characteristics of healthcare processes such as their variability and patient-centred focus require targeted attention. Against this background, the Process-Oriented Data Science in Healthcare Alliance has been established to propagate the research and application of techniques targeting the data-driven improvement of healthcare processes. This paper, an initiative of the alliance, presents the distinguishing characteristics of the healthcare domain that need to be considered to successfully use process mining, as well as open challenges that need to be addressed by the community in the future.
- Published
- 2022
3. Heuristics for high-utility local process model mining
- Author
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Dalmas, B., Tax, N., Norre, S., Dalmas, B., Tax, N., and Norre, S.
- Abstract
Local Process Models (LPMs) describe structured fragments of process behavior occurring in the context of less structured business processes. In contrast to traditional support-based LPM discovery, which aims to generate a collection of process models that describe highly frequent behavior, High-Utility Local Process Model (HU-LPM) discovery aims to generate a collection of process models that provide useful business insights by specifying a utility function. Mining LPMs is a computationally expensive task, because of the large search space of LPMs. In supportbased LPM mining, the search space is constrained by making use of the property that support is anti-monotonic. We show that in general, we cannot assume a provided utility function to be anti-monotonic, therefore, the search space of HU-LPMs cannot be reduced without loss. We propose four heuristic methods to speed up the mining of HU-LPMs while still being able to discover useful HU-LPMs. We demonstrate their applicability on three real-life data sets.
- Published
- 2017
4. Prediction of protein secondary structure from circular dichroism spectra using artificial neural network techniques
- Author
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Dalmas B, Gary Hunter, and Wh, Bannister
- Subjects
Models, Molecular ,Reference Values ,Circular Dichroism ,Neural Networks, Computer ,Protein Structure, Secondary - Abstract
An approach to predict protein secondary structure is presented using circular dichroism (CD) spectra as input to two types of artificial neural networks (ANNs): (i) a three-layer backpropagation network and (ii) a hybrid self-organisation to backpropagation network. The dataset comprised the CD spectra of 22 proteins in the 178-260 nm wavelength range whose secondary structures were known. A total of 22 networks were trained by each method, using the jackknife technique for testing the prediction on each protein in turn. The performance, measured in terms of root mean square residuals and Pearson product-moment correlation coefficients, compares well with that obtained by other statistical and ANN methods, and is likely to improve with the growth of the dataset.
- Published
- 1994
5. Prediction of Protein Secondary Structure from Circular Dichroism Spectra: An Attempt to Solve the Problem of the Best-Fitting Reference Protein Subsets
- Author
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Dalmas, B., primary and Bannister, W.H., additional
- Published
- 1995
- Full Text
- View/download PDF
6. Riflessione e invenzione nell''Epistola a Boscán' di Garcilaso de la Vega
- Author
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GARGANO, ANTONIO, A. Gargano, G. Alfano, A. Mazzucchi, G. Mazzocchi, S. Jossa, D. Dalmas, B. Buono, G. Poggi. F. Gherardi, M. D'Agostino, F. Cappelli, V. Meriola, Antonio Gargano, and Gargano, Antonio
- Published
- 2011
7. Evaluating the Bias in Hospital Data: Automatic Preprocessing of Patient Pathways Algorithm Development and Validation Study.
- Author
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Uhl L, Augusto V, Dalmas B, Alexandre Y, Bercelli P, Jardinaud F, and Aloui S
- Subjects
- Humans, Data Mining methods, Bias, Emergency Service, Hospital statistics & numerical data, Databases, Factual, Algorithms, Critical Pathways
- Abstract
Background: The optimization of patient care pathways is crucial for hospital managers in the context of a scarcity of medical resources. Assuming unlimited capacities, the pathway of a patient would only be governed by pure medical logic to meet at best the patient's needs. However, logistical limitations (eg, resources such as inpatient beds) are often associated with delayed treatments and may ultimately affect patient pathways. This is especially true for unscheduled patients-when a patient in the emergency department needs to be admitted to another medical unit without disturbing the flow of planned hospitalizations., Objective: In this study, we proposed a new framework to automatically detect activities in patient pathways that may be unrelated to patients' needs but rather induced by logistical limitations., Methods: The scientific contribution lies in a method that transforms a database of historical pathways with bias into 2 databases: a labeled pathway database where each activity is labeled as relevant (related to a patient's needs) or irrelevant (induced by logistical limitations) and a corrected pathway database where each activity corresponds to the activity that would occur assuming unlimited resources. The labeling algorithm was assessed through medical expertise. In total, 2 case studies quantified the impact of our method of preprocessing health care data using process mining and discrete event simulation., Results: Focusing on unscheduled patient pathways, we collected data covering 12 months of activity at the Groupe Hospitalier Bretagne Sud in France. Our algorithm had 87% accuracy and demonstrated its usefulness for preprocessing traces and obtaining a clean database. The 2 case studies showed the importance of our preprocessing step before any analysis. The process graphs of the processed data had, on average, 40% (SD 10%) fewer variants than the raw data. The simulation revealed that 30% of the medical units had >1 bed difference in capacity between the processed and raw data., Conclusions: Patient pathway data reflect the actual activity of hospitals that is governed by medical requirements and logistical limitations. Before using these data, these limitations should be identified and corrected. We anticipate that our approach can be generalized to obtain unbiased analyses of patient pathways for other hospitals., (©Laura Uhl, Vincent Augusto, Benjamin Dalmas, Youenn Alexandre, Paolo Bercelli, Fanny Jardinaud, Saber Aloui. Originally published in JMIR Medical Informatics (https://medinform.jmir.org), 23.09.2024.)
- Published
- 2024
- Full Text
- View/download PDF
8. Citizen science: How to extend reciprocal benefits from the project community to the broader socio-ecological system.
- Author
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Receveur A, Poulet L, Dalmas B, Gonçalves B, and Vernay A
- Abstract
Quantitative plant biology is a growing field, thanks to the substantial progress of models and artificial intelligence dealing with big data. However, collecting large enough datasets is not always straightforward. The citizen science approach can multiply the workforce, hence helping the researchers with data collection and analysis, while also facilitating the spread of scientific knowledge and methods to volunteers. The reciprocal benefits go far beyond the project community: By empowering volunteers and increasing the robustness of scientific results, the scientific method spreads to the socio-ecological scale. This review aims to demonstrate that citizen science has a huge potential (i) for science with the development of different tools to collect and analyse much larger datasets, (ii) for volunteers by increasing their involvement in the project governance and (iii) for the socio-ecological system by increasing the share of the knowledge, thanks to a cascade effect and the help of 'facilitators'., Competing Interests: None., (© The Author(s) 2022.)
- Published
- 2022
- Full Text
- View/download PDF
9. Process mining for healthcare: Characteristics and challenges.
- Author
-
Munoz-Gama J, Martin N, Fernandez-Llatas C, Johnson OA, Sepúlveda M, Helm E, Galvez-Yanjari V, Rojas E, Martinez-Millana A, Aloini D, Amantea IA, Andrews R, Arias M, Beerepoot I, Benevento E, Burattin A, Capurro D, Carmona J, Comuzzi M, Dalmas B, de la Fuente R, Di Francescomarino C, Di Ciccio C, Gatta R, Ghidini C, Gonzalez-Lopez F, Ibanez-Sanchez G, Klasky HB, Prima Kurniati A, Lu X, Mannhardt F, Mans R, Marcos M, Medeiros de Carvalho R, Pegoraro M, Poon SK, Pufahl L, Reijers HA, Remy S, Rinderle-Ma S, Sacchi L, Seoane F, Song M, Stefanini A, Sulis E, Ter Hofstede AHM, Toussaint PJ, Traver V, Valero-Ramon Z, Weerd IV, van der Aalst WMP, Vanwersch R, Weske M, Wynn MT, and Zerbato F
- Subjects
- Humans, Delivery of Health Care, Hospitals
- Abstract
Process mining techniques can be used to analyse business processes using the data logged during their execution. These techniques are leveraged in a wide range of domains, including healthcare, where it focuses mainly on the analysis of diagnostic, treatment, and organisational processes. Despite the huge amount of data generated in hospitals by staff and machinery involved in healthcare processes, there is no evidence of a systematic uptake of process mining beyond targeted case studies in a research context. When developing and using process mining in healthcare, distinguishing characteristics of healthcare processes such as their variability and patient-centred focus require targeted attention. Against this background, the Process-Oriented Data Science in Healthcare Alliance has been established to propagate the research and application of techniques targeting the data-driven improvement of healthcare processes. This paper, an initiative of the alliance, presents the distinguishing characteristics of the healthcare domain that need to be considered to successfully use process mining, as well as open challenges that need to be addressed by the community in the future., (Copyright © 2022 Elsevier Inc. All rights reserved.)
- Published
- 2022
- Full Text
- View/download PDF
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