29 research outputs found

    Raisonnement collaboratif à partir de cas dans la résolution de problÚmes en maintenance

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    Nous nous intĂ©ressons dans cette Ă©tude Ă  la rĂ©alisation de la fonction maintenance en contexte industriel et, plus particuliĂšrement, Ă  l’aide qui peut ĂȘtre apportĂ©e aux processus dĂ©cisionnels sous-jacents par la rĂ©utilisation des connaissances. La rĂ©solution de problĂšmes complexes en maintenance nĂ©cessite souvent la collaboration d’experts pour prendre les dĂ©cisions nĂ©cessaires, parfois en situation d’urgence. Nos travaux visent l’amĂ©lioration des performances des actions de maintenance par l’exploitation de systĂšme de retour d’expĂ©riences en contexte collaboratif. Plusieurs idĂ©es sont dĂ©veloppĂ©es, dans le domaine de la maintenance industrielle, sur les processus de rĂ©solution de problĂšmes complexes et, plus particuliĂšrement, une proposition de dĂ©veloppement de Raisonnement Collaboratif Ă  Partir de Cas (RCĂ PC)

    Generating Knowledge in Maintenance from Experience Feedback

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    Knowledge is nowadays considered as a significant source of performance improvement, but may be difficult to identify, structure, analyse and reuse properly. A possible source of knowledge is in the data and information stored in various modules of industrial information systems, like CMMS (Computerized Maintenance Management Systems) for maintenance. In that context, the main objective of this paper is to propose a framework allowing to manage and generate knowledge from information on past experiences, for improving the decisions related to the maintenance activity. In that purpose, we suggest an original Experience Feedback process dedicated to maintenance, allowing to capitalize on past interventions by i) formalizing the domain knowledge and experiences using a visual knowledge representation formalism with logical foundation (Conceptual Graphs); ii) extracting new knowledge thanks to association rules mining algorithms, using an innovative interactive approach; iii) interpreting and evaluating this new knowledge thanks to the reasoning operations of Conceptual Graphs. The suggested method is illustrated on a case study based on real data dealing with the maintenance of overhead cranes

    GĂ©nĂ©ration de connaissances Ă  l’aide du retour d’expĂ©rience : application Ă  la maintenance industrielle

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    Les travaux de recherche prĂ©sentĂ©s dans ce mĂ©moire s’inscrivent dans le cadre de la valorisation des connaissances issues des expĂ©riences passĂ©es afin d’amĂ©liorer les performances des processus industriels. La connaissance est considĂ©rĂ©e aujourd'hui comme une ressource stratĂ©gique importante pouvant apporter un avantage concurrentiel dĂ©cisif aux organisations. La gestion des connaissances (et en particulier le retour d’expĂ©rience) permet de prĂ©server et de valoriser des informations liĂ©es aux activitĂ©s d’une entreprise afin d’aider la prise de dĂ©cision et de crĂ©er de nouvelles connaissances Ă  partir du patrimoine immatĂ©riel de l’organisation. Dans ce contexte, les progrĂšs des technologies de l’information et de la communication jouent un rĂŽle essentiel dans la collecte et la gestion des connaissances. L’implĂ©mentation gĂ©nĂ©ralisĂ©e des systĂšmes d’information industriels, tels que les ERP (Enterprise Resource Planning), rend en effet disponible un grand volume d’informations issues des Ă©vĂ©nements ou des faits passĂ©s, dont la rĂ©utilisation devient un enjeu majeur. Toutefois, ces fragments de connaissances (les expĂ©riences passĂ©es) sont trĂšs contextualisĂ©s et nĂ©cessitent des mĂ©thodologies bien prĂ©cises pour ĂȘtre gĂ©nĂ©ralisĂ©s. Etant donnĂ© le potentiel des informations recueillies dans les entreprises en tant que source de nouvelles connaissances, nous proposons dans ce travail une dĂ©marche originale permettant de gĂ©nĂ©rer de nouvelles connaissances tirĂ©es de l’analyse des expĂ©riences passĂ©es, en nous appuyant sur la complĂ©mentaritĂ© de deux courants scientifiques : la dĂ©marche de Retour d’ExpĂ©rience (REx) et les techniques d’Extraction de Connaissances Ă  partir de DonnĂ©es (ECD). Le couplage REx-ECD proposĂ© porte principalement sur : i) la modĂ©lisation des expĂ©riences recueillies Ă  l’aide d’un formalisme de reprĂ©sentation de connaissances afin de faciliter leur future exploitation, et ii) l’application de techniques relatives Ă  la fouille de donnĂ©es (ou data mining) afin d’extraire des expĂ©riences de nouvelles connaissances sous la forme de rĂšgles. Ces rĂšgles doivent nĂ©cessairement ĂȘtre Ă©valuĂ©es et validĂ©es par les experts du domaine avant leur rĂ©utilisation et/ou leur intĂ©gration dans le systĂšme industriel. Tout au long de cette dĂ©marche, nous avons donnĂ© une place privilĂ©giĂ©e aux Graphes Conceptuels (GCs), formalisme de reprĂ©sentation des connaissances choisi pour faciliter le stockage, le traitement et la comprĂ©hension des connaissances extraites par l’utilisateur, en vue d’une exploitation future. Ce mĂ©moire s’articule en quatre chapitres. Le premier constitue un Ă©tat de l’art abordant les gĂ©nĂ©ralitĂ©s des deux courants scientifiques qui contribuent Ă  notre proposition : le REx et les techniques d’ECD. Le second chapitre prĂ©sente la dĂ©marche REx-ECD proposĂ©e, ainsi que les outils mis en Ɠuvre pour la gĂ©nĂ©ration de nouvelles connaissances afin de valoriser les informations disponibles dĂ©crivant les expĂ©riences passĂ©es. Le troisiĂšme chapitre prĂ©sente une mĂ©thodologie structurĂ©e pour interprĂ©ter et Ă©valuer l’intĂ©rĂȘt des connaissances extraites lors de la phase de post-traitement du processus d’ECD. Finalement, le dernier chapitre expose des cas rĂ©els d’application de la dĂ©marche proposĂ©e Ă  des interventions de maintenance industrielle. ABSTRACT : The research work presented in this thesis relates to knowledge extraction from past experiences in order to improve the performance of industrial process. Knowledge is nowadays considered as an important strategic resource providing a decisive competitive advantage to organizations. Knowledge management (especially the experience feedback) is used to preserve and enhance the information related to a company’s activities in order to support decision-making and create new knowledge from the intangible heritage of the organization. In that context, advances in information and communication technologies play an essential role for gathering and processing knowledge. The generalised implementation of industrial information systems such as ERPs (Enterprise Resource Planning) make available a large amount of data related to past events or historical facts, which reuse is becoming a major issue. However, these fragments of knowledge (past experiences) are highly contextualized and require specific methodologies for being generalized. Taking into account the great potential of the information collected in companies as a source of new knowledge, we suggest in this work an original approach to generate new knowledge based on the analysis of past experiences, taking into account the complementarity of two scientific threads: Experience Feedback (EF) and Knowledge Discovery techniques from Databases (KDD). The suggested EF-KDD combination focuses mainly on: i) modelling the experiences collected using a knowledge representation formalism in order to facilitate their future exploitation, and ii) applying techniques related to data mining in order to extract new knowledge in the form of rules. These rules must necessarily be evaluated and validated by experts of the industrial domain before their reuse and/or integration into the industrial system. Throughout this approach, we have given a privileged position to Conceptual Graphs (CGs), knowledge representation formalism chosen in order to facilitate the storage, processing and understanding of the extracted knowledge by the user for future exploitation. This thesis is divided into four chapters. The first chapter is a state of the art addressing the generalities of the two scientific threads that contribute to our proposal: EF and KDD. The second chapter presents the EF-KDD suggested approach and the tools used for the generation of new knowledge, in order to exploit the available information describing past experiences. The third chapter suggests a structured methodology for interpreting and evaluating the usefulness of the extracted knowledge during the post-processing phase in the KDD process. Finally, the last chapter discusses real case studies dealing with the industrial maintenance domain, on which the proposed approach has been applied

    GĂ©nĂ©ration de connaissances Ă  l’aide du retour d’expĂ©rience : application Ă  la maintenance industrielle

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    Les travaux de recherche prĂ©sentĂ©s dans ce mĂ©moire s’inscrivent dans le cadre de la valorisation des connaissances issues des expĂ©riences passĂ©es afin d’amĂ©liorer les performances des processus industriels. La connaissance est considĂ©rĂ©e aujourd'hui comme une ressource stratĂ©gique importante pouvant apporter un avantage concurrentiel dĂ©cisif aux organisations. La gestion des connaissances (et en particulier le retour d’expĂ©rience) permet de prĂ©server et de valoriser des informations liĂ©es aux activitĂ©s d’une entreprise afin d’aider la prise de dĂ©cision et de crĂ©er de nouvelles connaissances Ă  partir du patrimoine immatĂ©riel de l’organisation. Dans ce contexte, les progrĂšs des technologies de l’information et de la communication jouent un rĂŽle essentiel dans la collecte et la gestion des connaissances. L’implĂ©mentation gĂ©nĂ©ralisĂ©e des systĂšmes d’information industriels, tels que les ERP (Enterprise Resource Planning), rend en effet disponible un grand volume d’informations issues des Ă©vĂ©nements ou des faits passĂ©s, dont la rĂ©utilisation devient un enjeu majeur. Toutefois, ces fragments de connaissances (les expĂ©riences passĂ©es) sont trĂšs contextualisĂ©s et nĂ©cessitent des mĂ©thodologies bien prĂ©cises pour ĂȘtre gĂ©nĂ©ralisĂ©s. Etant donnĂ© le potentiel des informations recueillies dans les entreprises en tant que source de nouvelles connaissances, nous proposons dans ce travail une dĂ©marche originale permettant de gĂ©nĂ©rer de nouvelles connaissances tirĂ©es de l’analyse des expĂ©riences passĂ©es, en nous appuyant sur la complĂ©mentaritĂ© de deux courants scientifiques : la dĂ©marche de Retour d’ExpĂ©rience (REx) et les techniques d’Extraction de Connaissances Ă  partir de DonnĂ©es (ECD). Le couplage REx-ECD proposĂ© porte principalement sur : i) la modĂ©lisation des expĂ©riences recueillies Ă  l’aide d’un formalisme de reprĂ©sentation de connaissances afin de faciliter leur future exploitation, et ii) l’application de techniques relatives Ă  la fouille de donnĂ©es (ou data mining) afin d’extraire des expĂ©riences de nouvelles connaissances sous la forme de rĂšgles. Ces rĂšgles doivent nĂ©cessairement ĂȘtre Ă©valuĂ©es et validĂ©es par les experts du domaine avant leur rĂ©utilisation et/ou leur intĂ©gration dans le systĂšme industriel. Tout au long de cette dĂ©marche, nous avons donnĂ© une place privilĂ©giĂ©e aux Graphes Conceptuels (GCs), formalisme de reprĂ©sentation des connaissances choisi pour faciliter le stockage, le traitement et la comprĂ©hension des connaissances extraites par l’utilisateur, en vue d’une exploitation future. Ce mĂ©moire s’articule en quatre chapitres. Le premier constitue un Ă©tat de l’art abordant les gĂ©nĂ©ralitĂ©s des deux courants scientifiques qui contribuent Ă  notre proposition : le REx et les techniques d’ECD. Le second chapitre prĂ©sente la dĂ©marche REx-ECD proposĂ©e, ainsi que les outils mis en Ɠuvre pour la gĂ©nĂ©ration de nouvelles connaissances afin de valoriser les informations disponibles dĂ©crivant les expĂ©riences passĂ©es. Le troisiĂšme chapitre prĂ©sente une mĂ©thodologie structurĂ©e pour interprĂ©ter et Ă©valuer l’intĂ©rĂȘt des connaissances extraites lors de la phase de post-traitement du processus d’ECD. Finalement, le dernier chapitre expose des cas rĂ©els d’application de la dĂ©marche proposĂ©e Ă  des interventions de maintenance industrielle

    Web-based Process Planning for Machine Tool Maintenance and Services

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    Providing maintenance and services for high value complex products would extend manufacturers’ responsibilities and benefits to the products' whole usable life, and provide the opportunities to re-use or re-manufacture some failed parts. Sophisticated Computer Numerical Control (CNC) machine tools in modern manufacturing systems are special products in that they are also used to manufacture other products, and their operation performance directly affects the quality of the manufactured parts as well as the performance of the entire manufacturing system. To ensure CNC machine tools’ consistent performance, appropriate and efficient maintenance and services are essential and this is more challenging as technologies become more sophisticated and the environment is more dynamic. Previous research was mainly focused on maintenance strategy and maintenance scheduling. Very little effort was devoted to providing operational guidance for maintenance process execution, i.e., providing service suppliers with detailed information about resources needed for maintenance such as tooling, consumables, materials and spare parts, as well as service steps including disassembly and assembly of the serviced products. In this project, planning maintenance operation sequences, schedules and resource allocation are the three main tasks for generating final maintenance plans. This paper will present a Collaborative Maintenance Planning System (CoMPS) which will manage information and knowledge to support decision making in maintenance process planning

    Analysis reuse exploiting taxonomical information and belief assignment in industrial problem solving

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    To take into account the experience feedback on solving complex problems in business is deemed as a way to improve the quality of products and processes. Only a few academic works, however, are concerned with the representation and the instrumentation of experience feedback systems. We propose, in this paper, a model of experiences and mechanisms to use these experiences. More specifically, we wish to encourage the reuse of already performed expert analysis to propose a priori analysis in the solving of a new problem. The proposal is based on a representation in the context of the experience of using a conceptual marker and an explicit representation of the analysis incorporating expert opinions and the fusion of these opinions. The experience feedback models and inference mechanisms are integrated in a commercial support tool for problem solving methodologies. The results obtained to this point have already led to the definition of the role of ‘‘Rex Manager’’ with principles of sustainable management for continuous improvement of industrial processes in companies

    Requirements for an Intelligent Maintenance System for Industry 4.0

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    comprobaciĂłn paso "titulo publicaciĂłn " - Service Oriented, Holonic and Multi-agent Manufacturing Systems for Industry of the Future[EN] Recent advances in the development of technological devices and software for Industry 4.0 have pushed a change in the maintenance management systems and processes. Nowadays, in order to maintain a company competitive, a computerised management system is required to help in its maintenance tasks. This paper presents an analysis of the complexities and requirements for maintenance of Industry 4.0. It focuses on intelligent systems that can help to improve the intelligent management of maintenance. Finally, it presents a summary of lessons learned specified as guidelines for the design of such intelligent systems that can be applied horizontally to any company in the Industry.This work is supported by the FEDER/Ministry of Science, Innovation and Universities - State Research Agency RTC-2017-6401-7Garcia, E.; Araujo, A.; Palanca CĂĄmara, J.; Giret Boggino, AS.; Julian Inglada, VJ.; Botti, V. (2019). Requirements for an Intelligent Maintenance System for Industry 4.0. Springer. 340-351. https://doi.org/10.1007/978-3-030-27477-1_26S340351CEN, European Committee for Standardization: EN 13306:2017. Maintenance Terminology. European Standard (2017)Chen, B., Wan, J., Shu, L., Li, P., Mukherjee, M., Yin, B.: Smart factory of Industry 4.0: key technologies, application case, and challenges. IEEE Access 6, 6505–6519 (2018). https://doi.org/10.1109/access.2017.2783682Crespo Marquez, A., Gupta, J.N.: Contemporary maintenance management: process, framework and supporting pillars. Omega 34(3), 313–326 (2006). https://doi.org/10.1016/j.omega.2004.11.003Ferreira, L.L., Albano, M., Silva, J., Martinho, D., Marreiros, G., di Orio, G., Malo, P., Ferreira, H.: A pilot for proactive maintenance in Industry 4.0. In: 2017 IEEE 13th International Workshop on Factory Communication Systems (WFCS). IEEE (2017). https://doi.org/10.1109/wfcs.2017.7991952Goh, K., Tjahjono, B., Baines, T., Subramaniam, S.: A review of research in manufacturing prognostics. In: 2006 IEEE International Conference on Industrial Informatics, Singapore, pp. 417–422. IEEE (2006). https://doi.org/10.1109/INDIN.2006.275836Hashemian, H.M., Bean, W.C.: State-of-the-art predictive maintenance techniques. IEEE Trans. Instrum. Meas. 60(10), 3480–3492 (2011). https://doi.org/10.1109/TIM.2009.2036347Lee, W.J., Wu, H., Yun, H., Kim, H., Jun, M.B., Sutheralnd, J.W.: Predictive maintenance of machine tool systems using artificial intelligence techniques applied to machine condition data. Procedia CIRP 80, 506–511 (2019)Lu, B., Durocher, D., Stemper, P.: Predictive maintenance techniques. IEEE Ind. Appl. Mag. 15(6), 52–60 (2009). https://doi.org/10.1109/MIAS.2009.934444Mrugalska, B., Wyrwicka, M.K.: Towards lean production in Industry 4.0. Procedia Eng. 182, 466–473 (2017). https://doi.org/10.1016/j.proeng.2017.03.135O’Donoghue, C., Prendergast, J.: Implementation and benefits of introducing a computerised maintenance management system into a textile manufacturing company. J. Mater. Process. Technol. 153, 226–232 (2004)Paolanti, M., Romeo, L., Felicetti, A., Mancini, A., Frontoni, E., Loncarski, J.: Machine learning approach for predictive maintenance in Industry 4.0. In: 2018 14th IEEE/ASME International Conference on Mechatronic and Embedded Systems and Applications (MESA). IEEE (2018). https://doi.org/10.1109/mesa.2018.8449150Patil, R.B., Mhamane, D.A., Kothavale, P.B., Kothavale, B.: Fault tree analysis: a case study from machine tool industry. Available at SSRN 3382241 (2018)Potes Ruiz, P.A., Kamsu-Foguem, B., Noyes, D.: Knowledge reuse integrating the collaboration from experts in industrial maintenance management. Knowl. Based Syst. 50, 171–186 (2013). https://doi.org/10.1016/j.knosys.2013.06.005Razmi-Farooji, A., Kropsu-VehkaperĂ€, H., HĂ€rkönen, J., Haapasalo, H.: Advantages and potential challenges of data management in e-maintenance. J. Qual. Maint. Eng. (2019)RĂŒĂŸmann, M., Lorenz, M., Gerbert, P., Waldner, M., Justus, J., Harnisch, M.: Industry 4.0: the future of productivity and growth in manufacturing industries. Boston Consult. Group 9(1), 54–89 (2015)Wan, J., Tang, S., Li, D., Wang, S., Liu, C., Abbas, H., Vasilakos, A.V.: A manufacturing big data solution for active preventive maintenance. IEEE Trans. Ind. Inform. 13(4), 2039–2047 (2017). https://doi.org/10.1109/tii.2017.267050

    Telemedicine framework using case-based reasoning with evidences

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    Telemedicine is the medical practice of information exchanged from one location to another through electronic communications to improve the delivery of health care services. This research article describes a telemedicine framework with knowledge engineering using taxonomic reasoning of ontology modeling and semantic similarity. In addition to being a precious support in the procedure of medical decision-making, this framework can be used to strengthen significant collaborations and traceability that are important for the development of official deployment of telemedicine applications. Adequate mechanisms for information management with traceability of the reasoning process are also essential in the fields of epidemiology and public health. In this paper we enrich the case-based reasoning process by taking into account former evidence-based knowledge. We use the regular four steps approach and implement an additional (iii) step: (i) establish diagnosis, (ii) retrieve treatment, (iii) apply evidence, (iv) adaptation, (v) retain. Each step is performed using tools from knowledge engineering and information processing (natural language processing, ontology, indexation, algorithm, etc.). The case representation is done by the taxonomy component of a medical ontology model. The proposed approach is illustrated with an example from the oncology domain. Medical ontology allows a good and efficient modeling of the patient and his treatment. We are pointing up the role of evidences and specialist's opinions in effectiveness and safety of care

    Knowledge reuse integrating the collaboration from experts in industrial maintenance management

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    Distributed environments, technological evolution, outsourcing market and information technology (IT) are factors that considerably influence current and future industrial maintenance management. Repairing and maintaining the plants and installations requires a better and more sophisticated skill set and continuously updated knowledge. Today, maintenance solutions involve increasing the collaboration of several experts to solve complex problems. These solutions imply changing the requirements and practices for maintenance; thus, conceptual models to support multidisciplinary expert collaboration in decision making are indispensable. The objectives of this work are as follows: (i) knowledge formalization of domain vocabulary to improve the communication and knowledge sharing among a number of experts and technical actors with Conceptual Graphs (CGs) formalism, (ii) multi-expert knowledge management with the Transferable Belief Model (TBM) to support collaborative decision making, and (iii) maintenance problem solving with a variant of the Case-Based Reasoning (CBR) mechanism with a process of solving new problems based on the solutions of similar past problems and integrating the experts’ beliefs. The proposed approach is applied for the maintenance management of the illustrative case study
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