Efthimios Bothos

National Technical University of Athens | NTUA · School of Electrical and Computer Engineering

In this paper we propose a research agenda on the use of information markets as tools to collect, aggregate and analyze citizens’ opinions, expectations and preferences from social media in order to support public policy design and implementation. We argue that markets are institutional settings able to efficiently allocate scarce resources, aggreg...

Transportation and mobility in smart cities are undergoing a grave transformation as new ways of mobility are introduced to facilitate seamless traveling, addressing travelers’ needs in a personalized manner. A novel concept that has been recently introduced is Mobility-as-a-Service (MaaS), where mobility services are bundled in MaaS Plans and offe...

Over the last few years, MaaS has been extensively studied and evolved into offering a multitude of mobility services that continuously increase, from alternative car or bike-sharing modes to autonomous vehicles, that aspire to become a part of this novel ecosystem. MaaS provides end-users with multimodal, integrated, and digital mobility solutions...

The importance of integrated spatial and transport planning in regional and urban policy making stems from the fundamentally interdependent relationship of land-use, transport demand and transport supply. The adoption of integrated approaches would offer local authorities the possibility to steer urban development towards simultaneously pursuing ec...

The continuing growth of urbanisation poses a real threat to the operation of transportation services in large metropolitan areas around the world. As a response, several initiatives that promote public transport and active travelling have emerged in the last few years. Mobility as a Service (MaaS) is one such initiative with the main goal being th...

Within this paper, we present a novel routing algorithm capable of providing not only truly intermodal routes but also coming up with route alternatives. These route alternatives feature different route and mode choices while still optimizing the same objective function (e.g. travel time). We therefore, provide a first presentation of the next gene...

Rendering transport behaviours more sustainable is a pressing issue of our times. In this paper, we rely on the deep penetration of mobile phones in order to influence citizens’ behavior through data-driven mobility and persuasive profiles. Our proposed approach aims to nudge users on a personalized level in order to change their mobility behavior...

Over the last few years, MaaS has been extensively studied and evolved into offering a multitude of mobility services that continuously increase, from alternative car or bike sharing modes to autonomous vehicles, that aspire to become a part of this novel ecosystem. MaaS provides end-users with multimodal, integrated and digital mobility solutions,...

Mobility as a Service (MaaS) is a new approach for multimodal transportation in smart cities which refers to the seamless integration of various forms of transport services accessible through one single digital platform. In a MaaS environment there can be a multitude of multi modal options to reach a destination which are derived from combinations...

The mobility landscape has changed over the last years with the advent of innovative transportation solutions which are being constantly deployed whereas more are set to emerge in the near future such as autonomous vehicles and flying taxis. In this landscape a new mobility paradigm has come to the forefront during the last years through Mobility a...

In this paper, we study the effectiveness of personalized persuasive interventions to change urban travelers’ mobility behavior and nudge them towards more sustainable transport choices. More specifically, we embed a set of persuasive design elements in a route planning application and investigate how they affect users’ travel choices. The design e...

Mobility as a Service (MaaS) is the integration of various forms of transport services into a single “mobility plan”, that can be considered as a bundled set of distinct services/products, bought and used as a single product. The concept of MaaS is gaining an increasingly high interest however, there are still many challenges that have to be dealt...

In recent years, persuasive interventions for inducing sustainable mobility behaviours have become an active research field. This review paper systematically analyses existing approaches and prototype systems as well as field studies and describes and classifies the persuasive strategies used for changing behaviours in the domain of mobility and tr...

Sustainable mobility has received significant attention over the recent years due to the negative impact of peoples’ transportation habits on the environment and the society, especially in congested urban areas. In this paper, we present our approach for personalized persuasion aiming to nudge travelers to opt for sustainable mode choices. Our appr...

This workshop invites researchers and practitioners to participate in exploring behavioral change support intelligent transportation applications. We welcome submissions that explore intelligent transportation systems (ITS), which interact with travelers in order to persuade them or nudge them towards sustainable transportation behaviors and decisi...

This workshop invites researchers and practitioners to participate in exploring behavioral change support intelligent transportation applications. We welcome submissions that explore intelligent transportation systems (ITS), which interact with travelers in order to persuade them or nudge them towards sustainable transportation behaviors and decisi...

Recent approaches on tackling the problem of sustainable transportation involve persuasive systems and applications. These systems focus on changing citizens’ behavior towards adopting transportation habits that rely more on the use of public transportation, bicycles and walking and less on private cars. A main drawback of existing applications is...

Reliable and timely information about current economic and environmental conditions is crucial for policy makers to take decisions and for steering agents’ expectations formation about the state of the economy. While the usefulness of monitoring expectations, opinions and sentiments of economic agents is undoubted, one can argue that existing indic...

We implemented a recommendation system that presents persuasive messages to commuters using a route planning application. Our aim is to nudge users towards following routes that are environmentally friendly with lower CO2 emissions than those they usually take. Our implementation leverages contextual information and transportation user profiles whi...

In recent years, the persuasive interventions for inducing sustainable urban mobility behaviours has become a very active research field. This review paper systematically analyses existing approaches and prototype systems and describes and classifies the persuasive strategies used for changing behaviour in the domain of transport. It also studies t...

The rising urbanisation as well as the fact that work and leisure life become progressively geographically distributed lead to increased CO2 emissions from citizens activities related to traffic and mobility. One promising method to reduce CO2 emissions from these activities is to encourage green transportation habits through recommendation and per...

Besides other popular strategies, such as feedback and (social) comparisons , challenges have been proposed and used to influence people's behavior towards a targeted goal. However, only very limited data on the effectiveness of such approaches and how to best design them is available yet. In this work we report the findings of a two months field s...

In creative tasks, the user expects to acquire holistic information, to explore the space of available information and to come up with diverse views before converging to a solution for the creative task. We hypothesize that the implicit use of social chatter in information seeking activities can enhance the potential for novel, diverse and unexpect...

The demo paper describes the Creative User Centric Inspirational Search, which aims to leverage user inspiration in information seeking activities. CRUISE is an interactive exploratory search tool that combines diversification of content and sources with a user interface design that visualizes cues from the social chatter generated with microbloggi...

Persuasive technologies are suitable for encouraging green transportation behavior towards CO2 emissions reduction. We focus on persuasive strategies deployed through a choice architecture approach and incorporated in a smartphone application, aiming at providing urban travelers with a solution that will nudge them to consider the environmental fri...

Persuasive technologies are suitable for encouraging green transportation behaviour towards CO2 emissions reduction. For example, such technologies can guide and support users in finding trips that cause low emissions and in the long term change their behaviour and habits towards more sustainable transport decisions. In this paper, we focus on pers...

In order to predict user behaviour recommender systems generate views of the world according to expressed and known user preferences resulting in 'filter bubbles'. This kind of bubbles generally help users to easily identify objects they like. However, it is becoming increasingly difficult for users to escape their personalized world and change the...

Serendipity, the process of making fortunate discoveries for which someone was not looking for, can play a crucial role in leveraging creativity in learning [1]. Serendipity enables creative connections to develop while it can have a role in revealing hidden connections or “hidden analogies”, especially in a social context such as in most learning...

Personal transportation greatly contributes to environmental pollution from CO2 emissions and persuasive technologies could assist travellers in reducing their ecological impact. In this work we focus on the design of persuasive travel recommenders in order to support travellers, who have a pre-existing interest in taking action to lessen their imp...

As personal transportation is one of the greatest contributors of CO2 emissions, means able to assist travelers in reducing their ecological impact are urgently needed. In this work we focus on travel recommenders that encourage green transportation habits among travelers who have a preexisting interest in taking action to lessen their impact on th...

Recommender Systems have emerged as a way to tackle the overload of information reflected in the increasing volume of information artefacts in the web and elsewhere. Recommender Systems analyse existing information on the user activities in order to estimate future preferences. However, in real life situations, different types of information can be...

Participatory governance entails converting citizens from passive users of administrative decisions into active participants of political procedures. Public institutions and organizations can benefit from methods and tools able to aggregate and interpret information dispersed among citizens. In this paper we explore the use of Information Aggregati...

In this paper we propose a research agenda on the use of information markets as tools to collect, aggregate and analyze citizens' opinions, expectations and preferences from social media in order to support public policy design and implementation. We argue that markets are institutional settings able to efficiently allocate scarce resources, aggreg...

Agents can exploit user-generated content available in social media by extracting user sentiments and assessments and using them to make informed transactions on the market.

Information Aggregation Markets (IAMs) constitute a mechanism whose purpose is to collect and aggregate information. They are commonly known as 'prediction markets' because they are often used to predict future events. In order for IAMs to efficiently aggregate information, they should attract participants with diversity of opinion, independence of...

Purpose The purpose of this paper is to explore the use of information aggregation markets (IAMs) for community‐based idea management and to present IDeM, a novel Internet‐based software tool that can be used for generating and evaluating new ideas utilizing the concept of IAMs. Design/methodology/approach Starting with a review of existing method...

Collaborative systems and methods are used within corporate environments to support innovation and management of new ideas. The aggregation of innovation-related information from a community of users is a non-trivial task that requires the use of specialized collaborative systems and methods. In this paper we explore the use of Prediction Markets f...

Undoubtedly, innovation is a key driver of industrial and firm competitiveness, as it is one of main sources of achieving a sustainable competitive advantage (Damanpour, 1991; Damanpour and Gopalakrishnan, 2001). Literature views collaboration and common innovation infrastructure as the most important triggers of innovation and creativity (Damanpou...

Several methods and software tools exist for evaluating new ideas in corporate environments, which provide significant help to decision makers when selecting the most promising suggestions for innovation. In this paper, we identify five criteria for assessing idea evaluation methods (number and type of ideas, number and motivation of evaluators, ty...

Collaborative systems and methods are used in companies to support innovation and management of new ideas. The aggregation of innovation-related information from a community of users is a non-trivial task that requires the use of specialized collaborative systems and methods. In this paper we explore the use of Information Aggregation Markets (IAMs...