JCIS 2023 (Ciudad Real)

URI permantente para esta comunidad:

https://hdl.handle.net/11705/2613

Las XVIII Jornadas de Ingeniería de Ciencia e Ingeniería de Servicios (JCIS 2023) se han celebrado en Ciudad Real del 12 al 14 de septiembre de 2023, como parte de las Jornadas Sistedes.

El programa de JCIS 2023 se ha organizado en torno a sesiones temáticas o tracks.

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Mostrando 1 - 20 de 47

Hacia una Mejor Monitorización Predictiva: Combinando Redes Neuronales de Grafos con Redes Neuronales Recurrentes en Minería de Procesos
Rama Maneiro, Efrén; Vidal Aguiar, Juan Carlos; Lama Penín, Manuel. Actas de las XVIII Jornadas de Ingeniería de Ciencia e Ingeniería de Servicios (JCIS 2023), 2023-09-12.
La monitorización predictiva de procesos de negocio, un subcampo clave de la minería de procesos, se centra en predecir características del próximo evento o secuencia de eventos futuros, entre otros aspectos relevantes. A pesar de que se han propuesto numerosas aproximaciones basadas en aprendizaje profundo, como redes neuronales recurrentes y convolucionales, estas no aprovechan de manera óptima la información estructural presente en los modelos de procesos. Este artículo presenta una propuesta innovadora que combina redes neuronales recurrentes con redes convolucionales de grafos, logrando un aprendizaje simultáneo de la información espaciotemporal tanto del registro de eventos como del modelo de proceso. Esta integración permite la identificación de patrones comunes en modelos de procesos, como bucles o paralelos, evitando la pérdida de información durante el aprendizaje del modelo. Un análisis experimental utilizando registros de eventos reales demuestra que nuestra aproximación presenta una mayor consistencia y supera a las técnicas actuales del estado del arte en el ámbito de la monitorización predictiva.
SASS - Un marco de trabajo de escalado de agilidad para grandes organizaciones
Villarrubia, Carlos; Granada, David; Vara, Juan Manuel. Actas de las XVIII Jornadas de Ingeniería de Ciencia e Ingeniería de Servicios (JCIS 2023), 2023-09-12.
Las organizaciones han modificado su enfoque de gestión, transitando desde uno basado en planes hacia uno ágil, debido a la necesidad de adaptarse para subsistir en un mercado cada vez más cambiante y competitivo. A pesar de que existen numerosos métodos para escalar la agilidad en todos los niveles de la organización, ninguno previene el exceso de fatiga del equipo al introducir la máxima carga de trabajo en cada sprint o al adoptar incorrectamente los principios de agilidad en productos desarrollados por múltiples equipos de trabajo. Derivado de estos problemas, en el presente artículo se propone un marco de trabajo para la implementación de agilidad en organizaciones de gran envergadura basado en los principios de Scrum y eXtreme Programming para el desarrollo de software, el cual disminuye la fatiga del equipo al incorporar spikes y sprints cuyo objetivo no es llevar a cabo las tareas de la pila del sprint. Además, se introducen nuevos roles, un artefacto novedoso y una nueva definición de "hecho", al mismo tiempo que se adaptan los eventos de la Guía Scrum con el fin de alcanzar dicho propósito.
A Framework for the Automatic Description of Healthcare Processes in Natural Language: Application in an Aortic Stenosis Integrated Care Process
Fontenla-Seco, Yago; Lama Penín, Manuel; González-Salvado, Violeta; Peña-Gil, Carlos; Bugarín-Diz, Alberto. Actas de las XVIII Jornadas de Ingeniería de Ciencia e Ingeniería de Servicios (JCIS 2023), 2023-09-12.
We present a summary of the work A framework for the automatic description of healthcare processes in natural language: Application in an aortic stenosis care process originally published in the Journal of Biomedical Informatics. We present a framework for the automatic generation of natural language descriptions of healthcare processes, with a specific application in the field of cardiology. The framework is based on the most widely used architecture for Data-to-Text systems and supported by a model capable of handling and reasoning with process data. It is able to quantify process features over time, extract temporal relations among activities and suggest possible causes, and compare features between groups of patients, among other features. The framework integrates fuzzy quantification techniques to represent quantitative process data and describe it in natural language using imprecise terms. A real-world application in the Aortic Stenosis Integrated Care Process of the University Clinical Hospital of Santiago de Compostela has been validated by fifteen cardiology experts, with very positive results. The findings suggest that natural language is the most efficient modality for conveying information to medical professionals, and that natural language descriptions provide relevant and useful information about the process.
DASSCi: Avatares Digitales Deportivos en Ciudades Inteligentes
Toro-Gálvez, Lorenzo; Moreno, Nathalie; Canal, Carlos; Troya, Javier. Actas de las XVIII Jornadas de Ingeniería de Ciencia e Ingeniería de Servicios (JCIS 2023), 2023-09-12.
Las nuevas tecnologías han impulsado la evolución de las ciudades inteligentes, las cuales buscan mejorar la calidad de vida de sus habitantes y optimizar la gestión de recursos urbanos a través de soluciones innovadoras y sostenibles. En este trabajo, se aborda el diseño e implementación de una aplicación móvil para el fomento de la actividad deportiva en la ciudad de Málaga, basada en el concepto de Digital Avatars. Dicho término se basa en el modelo People as a Service, y hace referencia a entidades digitales que residen en los smartphones de los usuarios y permiten controlar la información personal compartida, proporcionando una gestión segura y colaborativa de los datos. La aplicación desarrollada en este trabajo promueve la actividad física y la interacción social entre los ciudadanos, permitiéndoles registrar sus entrenamientos, conocer todas las instalaciones deportivas disponibles en la ciudad, socializar a través de la realización de entrenamientos en grupo y competir entre ellos para conocer quién es más activo deportivamente.
EFCC: un framework de emulación flexible para evaluar los despliegues de red, computación y aplicaciones en el Cloud Continuum
Martín León, Luis Jesús; Herrera, Juan Luis; Berrocal, José Javier; Galán-Jiménez, Jaime. Actas de las XVIII Jornadas de Ingeniería de Ciencia e Ingeniería de Servicios (JCIS 2023), 2023-09-12.
En los últimos años, el número de dispositivos conectados a Internet (y, por tanto, el tráfico de datos) ha aumentado significativa- mente. La adopción del paradigma del Internet de las Cosas, el uso de la arquitectura de microservicios para las aplicaciones y la posibilidad de desplegar dichas aplicaciones en diferentes capas (Fog, Edge, Cloud), hace que la selección de un despliegue adecuado sea una tarea crı́tica para los operadores y desarrolladores de redes. En este trabajo se pro- pone un marco de emulación que les permita tomar una decisión para el despliegue de red, computación y aplicaciones en el cloud continuum, satisfaciendo al mismo tiempo la calidad de servicio requerida. El fra- mework es compatible tanto para paradigmas de red IP como SDN y es extensible a diferentes tipos de escenarios gracias a su enfoque basado en contenedores Docker. La evaluación sobre un escenario de red realista muestra que es extensible a cualquier escenario y despliegue requerido por la comunidad investigadora que trabaja en el continuo de la nube.
Addressing the Uncertainty Interaction Problem in Software-intensive Systems: Challenges and Desiderata
Cámara, Javier; Calinescu, Radu; Cheng, Betty; Garlan, David; Schmerl, Bradley; Troya, Javier; Vallecillo, Antonio. Actas de las XVIII Jornadas de Ingeniería de Ciencia e Ingeniería de Servicios (JCIS 2023), 2023-09-12.
Software-intensive systems are increasingly used to support tasks that are typically characterized by high degrees of uncertainty. The modeling notations employed to design, verify, and operate such systems have increasingly started to capture different types of uncertainty, so that they can be explicitly considered when systems are developed and deployed. While these modeling paradigms consider different sources of uncertainty individually, these sources are rarely independent, and their interactions affect the achievement of system goals in subtle and often unpredictable ways. This vision paper describes the problem of uncertainty interaction in software-intensive systems, illustrating it on examples from relevant application domains. We then identify key open challenges that require further exploration, and define desiderata that future modeling notations and model-driven engineering research should consider to address these challenges.
A Service-oriented Meta-design for the Strategic Digital Transformation Process in Natural History Museums
Alvarado Pérez, Cristabel Evelia; Garcia Franquesa, Eulàlia; Pastor Collado, Joan Antoni. Actas de las XVIII Jornadas de Ingeniería de Ciencia e Ingeniería de Servicios (JCIS 2023), 2023-09-12.
The mission and services of natural history museums (NHMs) show, preserve and study life and ecosystems on Earth to understand nature's patterns and support their conservation. The evolution of IS/IT has driven a fundamental transformation of services and processes within different types of organizations such as NHMs, giving rise to the phenomenon known in the literature as digital transformation. Digital Transformation (DT) is a strategic, organization-wide approach that brings and improves together processes, people and technology. DT is a complex process that requires organizational commitment, including the redesign of service/business processes, developing new skills, and sometimes overcoming people resistance and inertia. Museums have been no strangers to DT for the past few decades, but their pace of change has been slower than in other sectors, leaving most museums far from digital maturity. However, in order to open up their biodiversity data and increase the effectiveness of their service processes, NHMs are faced with the need to integrate IS/IT and transform digitally. Therefore, for NHMs strategic planning of DT has become crucial to set both a clear strategic direction for NHMs to fulfill their mission and maintain their relevance in 21st century. Using a design science research approach, the Museu de Ciències Naturals de Barcelona (MCNB) and the Universitat Politècnica de Catalunya (UPC) are collaborating in an applied research project, approved and funded by the Industrial Doctorate Programme of the Generalitat de Catalunya. The result will be a new methodology for strategic planning of DT in NHMs, as well as a first DT plan for the Collections area of the MCNB. This paper explains the meta-design carried out to build such a methodology.
Quantum Service-Oriented Computing: current landscape and challenges
Moguel, Enrique; Rojo, Javier; Berrocal, José Javier; García Alonso, José Manuel; Murillo Rodríguez, Juan Manuel. Actas de las XVIII Jornadas de Ingeniería de Ciencia e Ingeniería de Servicios (JCIS 2023), 2023-09-12.
The development that quantum computing technologies are achieving is beginning to attract the interest of companies that could potentially be users of quantum software. Thus, it is perfectly feasible that during the next few years hybrid systems will start to appear integrating both the classical software systems of companies and new quantum ones providing solutions to problems that still remain unmanageable today. A natural way to support such integration is Service-Oriented Computing. While conceptually the invocation of a quantum software service is similar to that of a classical one, technically there are many differences and technological limitations, which refer to platform independence, decoupling, scalability, etc. To highlight these differences and the difficulties to develop quality quantum services, this paper takes a well-known problem to which a quantum solution can be provided, integer factorization, making use of the Amazon Braket quantum service platform. The exercise of trying to provide the factorization as a quantum service is carried out following the best practices, design patterns and standards existing in the implementation of classical services. This case study is used to highlight the rough edges and limitations that arise in the integration of classical-quantum hybrid systems using service-oriented computing. The conclusion of the study allows us to point out directions in which to focus research efforts in order to achieve effective quantum service-oriented computing.
Una Herramienta de Soporte a la Monitorización Confiable de Infraestructuras en la Nube
Fernández de Bobadilla, Guiomar; Santisteban, Alejandro; García, José María; Fernández Montes, Pablo. Actas de las XVIII Jornadas de Ingeniería de Ciencia e Ingeniería de Servicios (JCIS 2023), 2023-09-12.
Los sistemas de monitorización de infraestructuras de servicios en la nube son necesarios para una gestión adecuada de los niveles de servicio aplicables. El hecho de que los incumplimientos de dichos niveles puedan conllevar acciones compensatorias obliga a que los sistemas de monitorización sean suficientemente confiables y proporcionen aspectos de trazabilidad. Aunque tecnologías como blockchain pueden proporcionar estas características, la configuración y operación de estas infraestructuras no es trivial y puede llevar a errores. En este artículo presentamos una herramienta que da soporte a la configuración, puesta en marcha y experimentación de un sistema de monitorización confiable de infraestructuras en la nube basado en contratos inteligentes, facilitando la elasticidad del sistema en función de la complejidad de los procesos de monitorización a realizar.
Diseño de Servicios Cuánticos a través de la Especificación AsyncAPI
Casco Seco, Jorge; Alvarado-Valiente, Jaime; Romero-Álvarez, Javier; Moguel, Enrique; García Alonso, José Manuel; Canal, Carlos; Murillo Rodríguez, Juan Manuel. Actas de las XVIII Jornadas de Ingeniería de Ciencia e Ingeniería de Servicios (JCIS 2023), 2023-09-12.
La computación cuántica ha pasado de ser una propuesta teórica a una realidad tangible. A pesar de que no es posible disponer de un ordenador cuántico de la misma forma que los ordenadores tradicionales, existen proveedores de servicios como Amazon, IBM o Microsoft que ofrecen ya la posibilidad de utilizar esta tecnología. Sin embargo, estos servicios presentan algunas limitaciones, en particular, la falta de herramientas que faciliten su uso y manejo. Este trabajo se centra en Amazon Braket, el servicio de computación cuántica que ofrece Amazon. En este servicio, las solicitudes se procesan en colas de espera, lo que puede dar lugar a tiempos prolongados para obtener los resultados. Amazon Braket almacena los resultados en el servicio de almacenamiento de Amazon S3, lo que permite a los desarrolladores comprobar si la tarea cuántica ha finalizado y recuperar los resultados obtenidos. No obstante, dado que no se conoce con certeza cuándo se producirá la finalización de la operación, el proceso puede resultar altamente ineficiente. Por ello, se propone una solución alternativa, consistente en la utilización de una arquitectura asíncrona que se integra con AWS Lambda, mediante una modificación de la especificación AsyncAPI. El objetivo es generar sistemas basados en eventos, con el fin de integrar programáticamente los servicios cuánticos de Amazon como parte de otros sistemas software, enviando a Braket el código cuántico a ejecutar y obteniendo de forma asíncrona los datos que devuelva el computador cuántico.
Limitations of current techniques to detect Obligations and Rights in SLA
Molino Peña, Elena; García, José María; Ruiz Cortés, Antonio. Actas de las XVIII Jornadas de Ingeniería de Ciencia e Ingeniería de Servicios (JCIS 2023), 2023-09-12.
The need to know and understand the obligations and rights contained in service agreements (also known as Customer Agreement) has generated interest in the industry, and there are numerous projects and tools available for the automatic detection and interpretation of obligations and rights. This is especially beneficial for the customer, as it allows them to automatically know the commitments and risks associated with the use of cloud services, as well as for the provider, who can detect potential liability gaps in the agreement. However, existing tools are only able to extract and partially identify this information. In this study, three limitations have been identified in the patterns proposed by some of the recent techniques to extract information from service level agreements (SLAs). In particular, situations in which some obligation or right is not detected, causes for which they can be misclassified and scenarios in which the actor that performs the action is not detected. In addition, a possible solution to these obstacles is proposed.
Towards Dynamic and Heterogeneous Social IoT Environments
Flores-Martin, Daniel; Berrocal, José Javier; García Alonso, José Manuel; Murillo Rodríguez, Juan Manuel. Actas de las XVIII Jornadas de Ingeniería de Ciencia e Ingeniería de Servicios (JCIS 2023), 2023-09-12.
Nowadays, there are millions of smart devices connected to the Internet. The purpose of these devices is to make people's lives easier. Thanks to the collaboration among them, the possibilities that the Internet of Things brings can grow exponentially. However, many manufacturers develop closed protocols and devices to protect their market share, limiting in many aspects this collaboration. This not only limits the ability of devices from different manufacturers to collaborate but also inevitably leads to the well-known vendor lock-in problem. This phenomenon implies that, if maximum benefit is to be derived from the IoT, devices from the same vendor must be purchased to ensure maximum compatibility. This paper proposes a solution whose purpose is to promote proactivity and collaboration between heterogeneous devices. Therefore, smart devices will be aware of the environmental situation they are in and the contextual properties that will allow them to adapt their behavior. To this end, a conceptual architecture is presented that favors integration between IoT devices regardless of the protocols developed by their manufacturers and facilitates the description of information through a common data model. This architecture has been evaluated in real and simulated environments to validate its feasibility and efficiency. As a result, devices from different manufacturers can communicate to create collaborative and heterogeneous environments in a simple, efficient, and affordable way.
Una propuesta de integración de servicios en la nube aplicada a la robótica móvil
Alulema Flores, Darwin Omar; Criado, Javier; Iribarne, Luis; Ayala, Rosa; Espinoza, Miguel; Nasimba, Victor. Actas de las XVIII Jornadas de Ingeniería de Ciencia e Ingeniería de Servicios (JCIS 2023), 2023-09-12.
Hoy en día, Internet es la base de la comunicación y las empresas dedican gran cantidad de tiempo y recursos para conseguir la mejor implementación de un sistema conformado con nuevos protocolos de comunicación, junto con la integración de servicios e interacción de los usuarios. Por estas razones, surge la propuesta de una arquitectura de servicios en la nube orientada a robótica móvil utilizando tecnología de largo alcance como lo es LoRa y el reconocimiento de imágenes de servicios remotos. La arquitectura está estructurada por una capa Edge Computing que integra al robot móvil, una capa Fog Computing con los protocolos de comunicación a larga distancia, y una capa Cloud Computing para la orquestación del uso de microservicios y mensajería ligera.
Elastic Smart Contracts in Blockchains
Dustdar, Schahram; Fernández Montes, Pablo; García, José María; Ruiz Cortés, Antonio. Actas de las XVIII Jornadas de Ingeniería de Ciencia e Ingeniería de Servicios (JCIS 2023), 2023-09-12.
In this paper, we deal with questions related to blockchains in complex Internet of Things (IoT)-based ecosystems. Such ecosystems are typically composed of IoT devices, edge devices, cloud computing software services, as well as people, who are decision makers in scenarios such as smart cities. Many decisions related to analytics can be based on data coming from IoT sensors, software services, and people. However, they are typically based on different levels of abstraction and granularity. This poses a number of challenges when multiple blockchains are used together with smart contracts. This work proposes to apply our concept of elasticity to smart contracts and thereby enabling analytics in and between multiple blockchains in the context of IoT. We propose a reference architecture for Elastic Smart Contracts and evaluate the approach in a smart city scenario, discussing the benefits in terms of performance and self-adaptability of our solution.
Toward Dependency-Aware API Gateways
Barakat, Saman; Sánchez Jerez, Ana Belén; Segura Rueda, Sergio. Actas de las XVIII Jornadas de Ingeniería de Ciencia e Ingeniería de Servicios (JCIS 2023), 2023-09-12.
Web APIs often include inter-parameter dependencies that constrain how input parameters can be combined to form valid calls to the service. API requests violating one or more of these dependencies result in an unnecessary exchange of messages, causing a waste of time and user quota. Also, dependencies are often not correctly checked by the servers, resulting in critical failures or uninformative error responses. In this paper, we propose extending API gateways to support the detection and explanation of inter-parameter dependencies violations. To achieve this goal, we leveraged IDL4OAS, an OAS extension for describing the dependencies among input parameters in web APIs, and IDLReasoner, a constraint-based IDL reasoner. Both were integrated into a prototype tool using Spring Cloud Gateway. Preliminary evaluation results on five industrial API operations show that our approach can successfully detect and explain all invalid requests, reducing the response time by around 80.31% and minimizing potential input validation failures.
Microservice Compositions based on the choreography of BPMN fragments. Facing Evolution Issues.
Ortiz, Jesús; Torres, Victoria; Valderas, Pedro. Actas de las XVIII Jornadas de Ingeniería de Ciencia e Ingeniería de Servicios (JCIS 2023), 2023-09-12.
Business Processes (BPs) are commonly used by organizations to describe their goals. However, the existent decentralization found in many organizations forces them to build such BPs by coordinating distributed and fragmented BPs. Within this context, microservices arise as a very interesting and convenient way to address the implementation of such processes due to their low coupling characteristic. In this case, the coordination of such fragmented BPs is usually achieved by means of event-based choreographies. One of the main challenges to be faced by choreographies is their evolution due to the complexity that introduces the need of integrating changes among autonomous and independent partners. We face the challenge of evolving a microservice composition that is globally defined in a BPMN model but executed through a choreography of BPMN fragments. We introduce a protocol to manage the propagation of a change done by one microservice to be integrated into both the BPMN fragments of the rest of the microservices and the global BPMN model. This protocol also supports the negotiation among participants and the automatic suggestion of model adaptations to maintain the functional integrity of the composition. These suggestions are supported by a catalogue of adaptation rules that precisely characterize every possible change and propose actions to be considered by the affected microservices. All the evolution process is done at the modelling level, without managing hard-coded implementations. We have developed specific tools to facilitate the practical adoption of this protocol, and we have validated our work in an experiment with users. We can conclude that the proposed approach is effective to evolve microservice compositions implemented as event-based choreography of BPMN fragments from the local perspective of one partner.
A Mashup-based Framework for Business Process Compliance Checking
Cabanillas, Cristina; Resinas Arias de Reyna, Manuel; Ruiz Cortés, Antonio. Actas de las XVIII Jornadas de Ingeniería de Ciencia e Ingeniería de Servicios (JCIS 2023), 2023-09-12.
Business process compliance ensures that the business processes of an organisation are designed and executed according to the rules that enforce the compliance controls that govern the company. We faced the challenge of building a Business Process Compliance Management System (BPCMS) for a process-aware organisation that had to provide support for several needs that, despite having been identified in the literature, were only partially satisfied by existing approaches. The variability in the types of rules and their interpretation generally restricts the existing support for compliance checking to specific types of rules (e.g., rules affecting the control flow of the process), a specific phase of the business process management lifecycle (e.g., design time or run time), or certain information systems for data retrieval (e.g., process event logs). Motivated by this, we designed a conceptual framework for design-time and run-time compliance checking that relies on the use of mashups for rule specification and checking. It presents the following advantages: (i) an open-ended set of types rules can be specified by designing and connecting mashup components; (ii) (parts of) the definitions of the rules can be reused as needed; and (iii) the mashup-based compliance checking system can be integrated with information systems of the organisation, enabling the verification of actual facts on actions performed during the execution of a process (e.g., the existence of a specific document in a concrete location). We defined a methodology to use the framework and we conducted design-time and run-time implementations that were validated with real data within a project with the IT department of a multinational company from the energy supply domain.
Towards a Telemetry Specification for Capacity Analysis in Limitation-Aware Microservices Architectures
Santisteban, Alejandro; Fernández Montes, Pablo; García, José María; Fresno-Aranda, Rafael; Ruiz Cortés, Antonio. Actas de las XVIII Jornadas de Ingeniería de Ciencia e Ingeniería de Servicios (JCIS 2023), 2023-09-12.
Microservices architectures (MSAs) have gained widespread adoption in recent years, resulting in complex systems that often require to retrieve data from external sources. These external sources tend to establish pricing plans to limit requests made to their APIs, leading to a situation that underscores a critical issue within MSAs: the need for awareness of the limitations of external APIs. Architectures that incorporate such awareness are referred to as Limitation-Aware Microservices Architectures (LAMAs), and the process of analyzing their limitations is known as capacity analysis. Telemetry, which automates the collection and analysis of data from remote sources, can provide valuable insights into the behavior of microservices. However, its use for capacity analysis of REST services remains a challenge. In this paper, we review the literature on the topic to evaluate the current state of the art. We then establish a set of requirements that can be used to design an effective specification for telemetry in order to support the capacity analysis in LAMAs, paving the way towards a more complete automation of the capacity analysis process.
Comités
Actas de las XVIII Jornadas de Ingeniería de Ciencia e Ingeniería de Servicios (JCIS 2023), 2023-09-12.
Presidentes, coordinadores y comités de los distintos tracks de las XVIII Jornadas de Ingeniería de Ciencia e Ingeniería de Servicios (JCIS 2023).
Continuous QoS-Aware Adaptation of Cloud-IoT Application Placements
Herrera, Juan Luis; Berrocal, José Javier; Forti, Stefano; Brogi, Antonio; Murillo Rodríguez, Juan Manuel. Actas de las XVIII Jornadas de Ingeniería de Ciencia e Ingeniería de Servicios (JCIS 2023), 2023-09-12.
Cloud-Internet of Things computing paradigms call for novel and efficient methodologies to decide where to place application services in continuity with Continuous Integration/Continuous Deployment pipelines and infrastructure monitoring. In this article, we present Continuous Adaptation (CA), a new DevOps practice for (1) detecting runtime changes in the application requirements or the infrastructure that, due to their change in resource consumption or their effects on the Quality of Service (QoS), can affect the validity and dependability of the current application placement, and for (2) locally intervening on them by suggesting new placements that ensure all (functional and non-functional) application requirements are met. We assess a prototype of CA, ConDADO, and analyze its performance over a motivating use case. ConDADO adapts the application placement to environmental changes through the use of continuous reasoning, reducing the size of the problem to be solved to optimize its performance. The evaluation shows that ConDADO is able to obtain nearly optimal QoS up to 4.2X faster than alternative techniques, also minimizing the cost of service migration.

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