Model-driven Development of User Interfaces for IoT via Domain-specific Components & Patterns

This is the summary of a joint contribution with Eric Umuhoza to ICEIS 2017 on Model-driven Development of User Interfaces for IoT via Domain-specific Components & Patterns.
Internet of Things technologies and applications are evolving and continuously gaining traction in all fields and environments, including homes, cities, services, industry and commercial enterprises. However, still many problems need to be addressed.
For instance, the IoT vision is mainly focused on the technological and infrastructure aspect, and on the management and analysis of the huge amount of generated data, while so far the development of front-end and user interfaces for IoT has not played a relevant role in research.
On the contrary, we believe that user interfaces in the IoT ecosystem they can play a key role in the acceptance of solutions by final adopters.
In this paper we present a model-driven approach to the design of IoT interfaces, by defining a specific visual design language and design patterns for IoT applications, and we show them at work. The language we propose is defined as an extension of the OMG standard language called IFML.

The slides of this talk are available online on Slideshare as usual:

Social Media Behaviour during Live Events: the Milano Fashion Week #MFW case

Social media are getting more and more  important in the context of live events, such as fairs, exhibits, festivals, concerts, and so on,  as they play an essential role in communicating them to  fans, interest groups, and the general population. These kinds of events are geo-localized within a city or territory and are scheduled within a public calendar.

Together with the people in the Fashion in Process group of Politecnico di Milano, we studied the impact on social media of a specific scenario, the Milano Fashion Week (MFW), which is an important event in Milano for the whole fashion business.

We presented this work at the Location and the Web workshop co-located with the WWW 2017 Conference in Perth, Australia.

We focus our attention on the spreading of social content  in space, measuring the spreading of the event propagation in space. We build different clusters of fashion brands, we characterize several features of propagation in space and we correlate them to the popularity of the brand and temporal propagation.

We show that the clusters along space, time and popularity dimensions are loosely correlated, and therefore trying to  understand the dynamics of the events only based on popularity  aspects would not be appropriate.

The paper PDF is available as open access PDF online on the WWW 2017 Conference web site. You can download it here.

A subsequent paper on the temporal analysis of the same event “Temporal Analysis of Social Media Response to Live Events: The Milano Fashion Week”, focusing on Granger Causality and other measures, has been published at ICWE 2017 and is available in the proceedings by Springer.

The PowerPoint presentation is available on SlideShare.

Modeling and Analyzing Engagement in Social Network Challenges

Within a completely new line of research, we are exploring the power of modeling for human behaviour analysis, especially within social networks and/or in occasion of large scale live events. Participation to challenges within social networks is a very effective instrument for promoting a brand or event and therefore it is regarded as an excellent marketing tool.
Our first reasearch has been published in November 2016 at WISE Conference, covering the analysis of user engagement within social network challenges.
In this paper, we take the challenge organizer’s perspective, and we study how to raise the
engagement of players in challenges where the players are stimulated to
create and evaluate content, thereby indirectly raising the awareness about the brand or event itself. Slides are available on slideshare:

We illustrate a comprehensive model of the actions and strategies that can be exploited for progressively boosting the social engagement during the challenge evolution. The model studies the organizer-driven management of interactions among players, and evaluates
the effectiveness of each action in light of several other factors (time, repetition, third party actions, interplay between different social networks, and so on).
We evaluate the model through a set of experiment upon a real case, the YourExpo2015 challenge. Overall, our experiments lasted 9 weeks and engaged around 800,000  users on two different social platforms; our quantitative analysis assesses the validity of the model.

cross-platform_pdf

 

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Community-based Crowdsourcing – Our paper at WWW2014 SOCM

Today Andrea Mauri presented our paper “Community-based Crowdsourcing” at the SOCM Workshop co-located with the WWW 2014 conference.

SOCM is the 2nd International Workshop on the Theory and Practice of Social Machines and is an interesting venue for discussing instrumentation, tooling, and software system aspects of online social network. The full program of the event is here.

Our paper is focused on community-based crowdsourcing applications, i.e. the ability of spawning crowdsourcing tasks upon multiple communities of performers, thus leveraging the peculiar characteristics and capabilities of the community members.
We show that dynamic adaptation of crowdsourcing campaigns to community behaviour is particularly relevant. We demonstrate that this approach can be very e ffective for obtaining answers from communities, with very di fferent size, precision, delay and cost, by exploiting the social networking relations and the features of the crowdsourcing task. We show the approach at work within the CrowdSearcher platform, which allows con figuring and dynamically adapting crowdsourcing campaigns tailored to different communities. We report on an experiment demonstrating the eff ectiveness of the approach.

The figure below shows a declarative reactive rule that dynamically adapts the crowdsourcing campaign by moving the task executions from a community of workers to another, when the average quality score of the community is below some threshold.

The slides of the presentation are available on Slideshare. If you want to know more or see some demos, please visit:

http://crowdsearcher.search-computing.org

 

The full paper will be available on the ACM Digital Library shortly.

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A bottom-up, knowledge-aware approach to integrating and querying web data services – ACM Trans. on the Web

The October 2013 issue of the ACM Transaction on the Web includes an article of ours on bottom-up domain model design of connected web data sources. This is becoming a more and more important problem as a wealth of data services is becoming available on the Web. Indeed, building and querying Web applications that effectively integrate Web content is increasingly important. However, schema integration and ontology matching with the aim of registering data services often requires a knowledge-intensive, tedious, and error-prone manual process. In the paper we tackle this issue as described below.

The paper has been authored by Stefano Ceri, Silvia Quarteroni and myself within the research project Search Computing.

The full paper is available for download on the ACM Digital Library (free of charge, courtesy of the ACM Author-izer service) through this URL:

http://dl.acm.org/citation.cfm?id=2493536

This is the summary of the contribution:

We present a bottom-up, semi-automatic service registration process that refers to an external knowledge base and uses simple text processing techniques in order to minimize and possibly avoid the contribution of domain experts in the annotation of data services. The first by-product of this process is a representation of the domain of data services as an entity-relationship diagram, whose entities are named after concepts of the external knowledge base matching service terminology rather than being manually created to accommodate an application-specific ontology. Second, a three-layer annotation of service semantics (service interfaces, access patterns, service marts) describing how services “play” with such domain elements is also automatically constructed at registration time. When evaluated against heterogeneous existing data services and with a synthetic service dataset constructed using Google Fusion Tables, the approach yields good results in terms of data representation accuracy.

We subsequently demonstrate that natural language processing methods can be used to decompose and match simple queries to the data services represented in three layers according to the preceding methodology with satisfactory results. We show how semantic annotations are used at query time to convert the user’s request into an executable logical query. Globally, our findings show that the proposed registration method is effective in creating a uniform semantic representation of data services, suitable for building Web applications and answering search queries.

The bibtex reference is as follows:

@article{QBC2013,
author = {Quarteroni, Silvia and Brambilla, Marco and Ceri, Stefano},
title = {A bottom-up, knowledge-aware approach to integrating and querying web data services},
journal = {ACM Trans. Web},
issue_date = {October 2013},
volume = {7},
number = {4},
month = nov,
year = {2013},
issn = {1559-1131},
pages = {19:1--19:33},
articleno = {19},
numpages = {33},
url = {http://doi.acm.org/10.1145/2493536},
doi = {10.1145/2493536},
acmid = {2493536},
publisher = {ACM},
address = {New York, NY, USA},
keywords = {Web data integration, Web data services, Web services, natural language Web query, service querying, structured Web search},
}

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ICWE 2008 contributions

I’ve published some of my current work on Web engineering at the ICWE 2008 conference. This year the conference will be held in July 2008 in Yorktown Heights (USA), at the IBM T.J. Watson research center. The paper that will be presented there are:

  • M. Brambilla, C. Tziviskou. “Modeling Ontology-Driven Personalization of Web Contents”
  • M. Brambilla, J.C. Preciado, M. Linaje, and F. Sanchez-Figueroa, “Business Process -based Conceptual Design of Rich Internet Applications”
  • M. Brambilla, A. Origgi. “MVC-Webflow: an AJAX Tool for Online Modeling of MVC-2 Web Applications”, Demo

Proceedings will be available in electronic form by IEEE Press.