Managing big data experiments on smartphones

The explosive number of smartphones with ever growing sensing and computing capabilities have brought a paradigm shift to many traditional domains of the computing field. Re-programming smartphones and instrumenting them for application testing and data gathering at scale is currently a tedious and time-consuming process that poses significant logistical challenges. Next generation smartphone applications are expected to be much larger-scale and complex, demanding that these undergo evaluation and testing under different real-world datasets, devices and conditions. In this paper, we present an architecture for managing such large-scale data management experiments on real smartphones. We particularly present the building blocks of our architecture that encompassed smartphone sensor data collected by the crowd and organized in our big data repository. The given datasets can then be replayed on our testbed comprising of real and simulated smartphones accessible to developers through a web-based interface. We present the applicability of our architecture through a case study that involves the evaluation of individual components that are part of a complex indoor positioning system for smartphones, coined Anyplace, which we have developed over the years. The given study shows how our architecture allows us to derive novel insights into the performance of our algorithms and applications, by simplifying the management of large-scale data on smartphones

From requirements to web applications in an agile model-driven approach

Web applications are hard to build not only because of technical reasons but also because they involve many different kinds of stakeholders. Involving customers in the development process is a must, not only while eliciting requirements but also considering that requirements change fast and they must be validated continuously. However, while model-driven approaches represent a step forward to reduce development time and work at a higher level of abstraction, most of them practically ignore stakeholders' involvement. Agile approaches tend to solve this problem, though they generally focus on programming rather than modeling. In this paper we present an extension to an approach that combines the best of both worlds, allowing a formal and high-level design style with constant involvement of customers, mainly in the definition of navigation, interaction and interface features. We extended it by adding transformation features that allow mapping requirement models into content and navigation ones. We provide a proof of concept in the context of the WebML design method and an empiric validation of the approach's advantages.Publicado en Lecture Notes in Computer Science book series (LNCS, vol. 7387).Facultad de InformáticaLaboratorio de Investigación y Formación en Informática Avanzad

From requirements to web applications in an agile model-driven approach

Web applications are hard to build not only because of technical reasons but also because they involve many different kinds of stakeholders. Involving customers in the development process is a must, not only while eliciting requirements but also considering that requirements change fast and they must be validated continuously. However, while model-driven approaches represent a step forward to reduce development time and work at a higher level of abstraction, most of them practically ignore stakeholders' involvement. Agile approaches tend to solve this problem, though they generally focus on programming rather than modeling. In this paper we present an extension to an approach that combines the best of both worlds, allowing a formal and high-level design style with constant involvement of customers, mainly in the definition of navigation, interaction and interface features. We extended it by adding transformation features that allow mapping requirement models into content and navigation ones. We provide a proof of concept in the context of the WebML design method and an empiric validation of the approach's advantages.Publicado en Lecture Notes in Computer Science book series (LNCS, vol. 7387).Facultad de InformáticaLaboratorio de Investigación y Formación en Informática Avanzad

From mockups to user interface models: An extensible model driven approach

Sketching web applications with mockup tools is a common practice that improves the process of elicitation and validation of requirements in web applications. However, mockups are used as a "quick and dirty" way of gathering requirements, thus discarded before development. As a consequence, concepts captured in them are usually lost in the manual transformation between mockups and the final user interface. In this paper we present a model-driven approach that overcomes this problem by importing mockups and then transforming them into a technology-dependent model. Development then begins from the imported version of the mockups.Publicado en Lecture Notes in Computer Science book series (LNCS, vol. 6385).Facultad de Informátic

From mockups to user interface models: An extensible model driven approach

Sketching web applications with mockup tools is a common practice that improves the process of elicitation and validation of requirements in web applications. However, mockups are used as a "quick and dirty" way of gathering requirements, thus discarded before development. As a consequence, concepts captured in them are usually lost in the manual transformation between mockups and the final user interface. In this paper we present a model-driven approach that overcomes this problem by importing mockups and then transforming them into a technology-dependent model. Development then begins from the imported version of the mockups.Publicado en Lecture Notes in Computer Science book series (LNCS, vol. 6385).Facultad de Informátic

Modelling the Requirements of Rich Internet Applications in WebRe

In the last years, several Web methodological approaches were defined in order to support the systematic building of Web software. Together with the constant technological advances, these methods must be constantly improved to deal with a myriad of new feasible application features, such as those involving rich interaction features. Rich Internet Applications (RIA) are Web applications exhibiting interaction and interface features that are typical in desktop software. Some specific methodological resources are required to deal with these characteristics. This paper presents a solution for the treatment of Web Requirements in RIA development. For this aim we present WebRE+, a requirement metamodel that incorporates RIA features into the modelling repertoire. We illustrate our ideas with a meaningful example of a business intelligence application.Ministerio de Educación y Ciencia TIN2007-67843-C06-03Ministerio de Educación y Ciencia TIN2010-20057-C03-0

MockupDD: Facilitating agile support for Model-Driven Web Engineering

Model-Driven Web Engineering methodologies provide a more productive way of building Web Applications using high-level models and generating final implementations from them. However, they follow a waterfall-like development process, forcing to specify a different set of models sequentially to obtain a first runnable prototype of the Web Application. On the other hand, agile methodologies pursue an iterative process based on the delivery of application prototypes in short periods of time using manual coding, which results less productive and more error-prone in comparison to model-based approaches. In this work we propose a hybrid agile and Model-Driven approach called MockupDD that intends to blend the best of MDWE and agile development processes.Publicado en Lecture Notes in Computer Science book series (LNCS, vol. 8295).Laboratorio de Investigación y Formación en Informática Avanzad

MockupDD: Facilitating agile support for Model-Driven Web Engineering

Model-Driven Web Engineering methodologies provide a more productive way of building Web Applications using high-level models and generating final implementations from them. However, they follow a waterfall-like development process, forcing to specify a different set of models sequentially to obtain a first runnable prototype of the Web Application. On the other hand, agile methodologies pursue an iterative process based on the delivery of application prototypes in short periods of time using manual coding, which results less productive and more error-prone in comparison to model-based approaches. In this work we propose a hybrid agile and Model-Driven approach called MockupDD that intends to blend the best of MDWE and agile development processes.Publicado en Lecture Notes in Computer Science book series (LNCS, vol. 8295).Laboratorio de Investigación y Formación en Informática Avanzad