Page - 348 - in Intelligent Environments 2019 - Workshop Proceedings of the 15th International Conference on Intelligent Environments

well as recognize the activities carried out in it, reason why a reliability in system engineering has to be considered [2]. All this, together with the fact that people can interact in an unexpected way with these systems, makes the development of IE a noteworthy challenge and an extremely difficult task, being innumerable the requirements to be taken into account. Moreover, society expects that this type of systems will be marketed, as a result of the transfer of knowledge generated after years of research. Self-driving cars are clear examples of this. However, an accident in which one of these vehicles killed a woman occurred last year [2]. Consequently, it is indispensable to apply the best practices, techniques and methods to the diverse stages (e.g., requirement specification, verification, modelling, simulation, validation, etc.) of the development of IE, such as the ones coming from Software Engineering [4], which can help to analyse and determine the correctness of these error- prone systems, with the aim of improving the crucial aspects of their security, safety and reliability [5], as well as increasing user confidence in them [6]. In the last years, several methodologies to improve the different quality aspects in the development of these systems, and particularly their reliability, have been proposed (such as the ones described in [7, 8, 9, 10, 11]. However, none of them has been universally accepted, and each methodology is normally used only by the people that proposed it. Therefore, we think that greater collaboration among the members of our community would be necessary in order to develop a more unified and holistic methodology that can be collectively adopted as a standard. Another aspect to consider in the development of IE is user expectations. A recent study on this topic [12] analyses the literature on IE and concludes that, although most of the articles make reference to users, only a small part of them involves them in any of the phases of the development of these systems. Without any doubt, this aspect should be improved in future developments of IE, involving their end users in order to produce systems that are closest to their real needs and that people can trust. To conclude, we would like to thank Dr. Daniela Micucci for accepting our invitation to give the keynote speech of this edition, entitled Ambient Assisted Living for an Ageing Society. The selected contributions, which include works on: the use of Wi-Fi signals to improve the efficiency of an indoor localization system based on image similarity, an approach to select the best web service among several similar ones to be used in a given IE, a platform for long-term data collection to support the training of algorithms for automatic human activity recognition, and a rule-based multi-agent negotiation approach for airline operation control, represent a well-balanced distribution of theoretical and practical contents. With all this, we hope to have a successful and fruitful workshop, where all the audience actively participate and discuss on the topics addressed. We also expect that readers enjoy the selected papers included in these proceedings. Last but not least, we wish to express our sincere thanks to: the authors of the submitted papers, for their very interesting and high quality contributions; WoRIE’19 Program Committee members, for their excellent work and invaluable support during the review process; and IE’19 Workshops Chairs, for their help and support. All of them have made possible to successfully organize the present edition of this workshop, which is being consolidated year after year. M.J.HornosandJ.C.Augusto / Introduction to theProceedingsofWoRIE’19348