Stefano Bussolon

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About me

Stefano Bussolon


Ph.D. in Cognitive Sciences

Contract professor in Data Analysis

Information architect




and academic




Education and academic experiences

1995 - MSc in Experimental Psychology

Padua University - 110/110 cum laude

2007 - Ph.D. in Cognitive Sciences

University of Trento

2010 - 2011 Contract professor

Contract professor in Data Analysis - University of Trento.

November 2010 - August 2011 Post - doc grant

Post doc grant - Faculty of Economy - University of Trento.


projects I've been involved in
Carige: redesign of the internet banking (1/2)


Gruppo Carige


Redesign of the internet banking, design of the mobile banking.


e*Finance Reply e-finance, Bitmama, TSW.

Other people involved

Giuseppe Mazza, Claudio Acquaviva, Matteo Radaelli.

Carige: redesign of the internet banking (2/2)

My role

Information design and information architecture.


Wireframes of the mobile application, the mobile site, and the internet banking site.

Fiat: evaluation of ADAS


Centro ricerche Fiat


Data and statistical analysis of an experiment in the field of human-machine interaction, evaluating an Advanced Driver Assistance Systems


Information Engineering and Computer Science department, University of Trento

Other people involved

Antonella De Angeli, Patrizio Fava

Euclid: redesign of a web application (1/2)


Fresenius Nephrocare


Redesign of Euclid, a clinical database designed to monitor the key aspects of the haemodialysis treatment.


Adrialab, Usertest Lab

Other people involved

Stefano Dominici, Fabiana Baldinelli, Miguel Mertens, Stepan Doubrava,

Euclid: redesign of a web application (2/2)

My role

usability expert, interaction designer


coached walkthrough; task analysis; euristic evaluation


Usability evaluation; task analysis; prototypes; guidelines.

Trenitalia: redesign of an application (1/2)


Trenitalia, the primary operator of trains within Italy


Redesign of the user interface of the ticket system



Other people involved

Michele Giannasi, Judit Pinzón, Michele Visciola, Giovanni Buono

Trenitalia: redesign of an application (2/2)

My role

interaction designer


ethnographic observation, interviews, task analysis


Wireframes and prototypes of the new interface

Vodafone: usability test (1/2)




Usability test



Other people involved

Fraser Hamilton, Emma Pickering, Mariateresa dell'Aquila

Vodafone: usability test (2/2)

My role

Usability testing facilitator


Usability test


Usability report

Giustizia.it: redesign of a web site (1/2)


The web portal of "Ministero della Giustizia", the Italian government Ministry of Justice


Redesign of the web site


Elsag Datamat

Other people involved

Maria Silvia Libé, Luca Rosati

Giustizia.it: redesign of a web site (2/2)

My role

Information architect


Online participatory design: free listing, importance evaluation, card sorting


Taxonomy of the macro information architecture

More projects (1/4)


Redesign of the website of the Politecnico di Milano

Information architecture: free listing, importance evaluation, card sorting.



Design of Rendimax, the IFIS Bank Home banking solution

Interaction design, usability testing

More projects (2/4)


The intranet of the administrative region of Emilia Romagna

Information archetecture: card sorting


Trentino Sociale

department of Social Policies, provincial administration of Trento.

Free listing, importance evaluation, card sorting

More projects (3/4)


Free listing, importance evaluation, card sorting



Free listing

More projects (4/4)


Kion Esse3

Free listing, importance evaluation, card sorting


Trentino Trasporti

Usability evaluation


Publications and conferences

EuroIA 2011, Prague

Stefano Bussolon. Designing interactions that help customers in decision making.

In VII EuroIA Summit, sep 2011. The slides of the presentation.

Real users don't use rational strategies when choosing: humans are prone to cognitive bias, and do use heuristics to overcome their cognitive limits; that's the reason why often, less alternatives lead to better choices.
The decision making interface should help the users in accomplishing their tasks, and it should keep into account the different decisional attitudes of the consumers, their different preferences, and the cognitive aspects of the decision process.
Journal of Information Architecture

Stefano Bussolon. Card sorting, category validity, and contextual navigation.

In Journal of Information Architecture, 1(2):5-29, December 2009. [download pdf]

The aim of this paper is twofold: the first purpose is to propose some measures of the fitness of a taxonomy as a whole and of each item. Three measures will be presented: a) the Consensus Analysis; b) an index adapted from Tullis and Wood (2004), here called Auto-correlation; c) a new measure, called Category Validity, conceptually similar to the Cue Validity introduced by Rosch and Mervis (1975). All these measures can be calculated from the results of the Card Sorting.
The second goal is to present a contextual navigation that could ameliorate the findability of those items whose classification has been proved to be problematic, and to increase the information scent of the whole domain.
EuroIA 2010, Paris

Stefano Bussolon. From clouds to trees: Clustering delicious tags.

In VI EuroIA Summit, sep 24 - 25 2010. See the slides on Slideshare

Every time an user (or an editor) uses more than one tag, she implicitly creates an association among those tags. Given a sufficient number of tagging actions, a proximity matrix of tags can be created, quite similar to the one obtained by the results of a card sorting, and the same statistical tools used in analysing the card sorting results can be applied, like the hierarchical cluster analysis, the principal component analysis, and the k-means.
Clustering the tags of a folksonomy can help the researcher to discover the implicit mental models of the users and provides a straightforward way to dramatically increase the information scent of the tag cloud.
UPA Europe 2008, Turin

Stefano Bussolon. Cultivating diversity in information architecture: the consensus analysis.

In the UPA Europe 2008. December 4 - 6, Torino, Italy.

Card sorting is the most often used method in the participatory information architecture. Consensus analysis, applied on the card sorting results, can help to estimate the reliability of the overall results and of each participant and to evaluate the presence of distinct cultural groups.
The participatory design approach implicitly assumes that customers, experts and final users have potentially different representations of the domain. In anthropological terms they belongs to different subcultures. Those divisions can go further: users can not be assumed to form an homogeneous cultural group.
Consensus analysis can be applied to the results of the card sorting to measure the homogeneity of the classifications, the presence of clusters of sub-cultures, and estimate the reliability of the answer of each participant.
ECCE 2006, Zurich

Stefano Bussolon, Barbara Russi, and Fabio Del Missier. Online card sorting: as good as the paper version.

In European Conference on Cognitive Ergonomics, Zürich, Switzerland, 20-22 September 2006. [Download pdf]

Netsorting is a web based cardsorting tool. Our research group used Netsorting to run a number of experiments on cognitive science and on information architecture.
In the study we are presenting here we compared two couples of card sorts with the same data: two performed with Netsorting, the other two with the traditional paper based card sorting.
We measured the performance of the two groups with two indices: the number of correct classification and the correlation among sampled subsets of participants. The participants who used Netsorting performed as good as the ones who used the paper sorting.
UCLIC 2005, UCL, London

Stefano Bussolon, Michela Ferron, and Fabio Del Missier. Netsorting: On-line categorization and card sorting.

Seminar at the University college London Interaction Center (UCLIC), London, (Uk) 23th August, 2005.

We will present Netsorting, a Web application that allows different methods of knowledge elicitation to be adopted:
  • Card sorting categorisation.
  • Prototypicality evaluation: participants are asked to rate the prototypicality of a list of items in a category.
  • Item generation: participants are required to produce items given a specific category.
Presentations in Italian (1/3)

Roberto Cobianchi, Francesca Fabbri, Stefano Bussolon, and Milco Forni. Redesign dell'architettura dell'informazione della intranet della regione Emilia Romagna (internos). In 4th Italian IA Summit, May 2010

Stefano Bussolon. Bisogni, scopi, motivazioni: fondamenti teorici dello user experience design. In Cultura senza Barriere, November 2009

Stefano Bussolon. Jenseits des lustprinzip - ux e motivazioni. In UXConference, December 2009

Presentations in Italian (2/3)

Stefano Bussolon. Model view controller: un pattern per l'interaction design. In 1st UXCamp, Firenze (IT), October, 17 2009

Stefano Bussolon and Davide Potente. Quando i passeggeri progettano l'aeroporto: architettura pervasiva e design partecipativo. In 3rd Italian IA Summit, February 20 – 21 2009.

Stefano Bussolon. Architettura dell'informazione centrata sull'utente. In Web senza Barriere 2008, Roma, 7 – 9 maggio 2008.

Presentations in Italian (3/3)

Dario Betti - Stefano Bussolon La classificazione fatta dai cittadini. Il caso Trentinosociale.it. In 2th Italian IA summit, Trento, 16 17 novembre 2007.

Stefano Bussolon. Architettura dell'informazione centrata sull'utente. In Chitaly 2007, Padova, 28 – 30 giugno 2007.

Stefano Bussolon and Gabriele Colaianni. Correlazione fra card sorting, tipicità e semantic decision task in un ambiente on line. In Congresso nazionale dell'Associazione Italiana di Psicologia, Sezione di Psicologia Sperimentale, Rovereto (I), 13-15 Settembre 2006.

Programming skills

Java programming

I am a fairly good java programmer. I do program in Java since the 1.02 version.

Packages most oftenly used:

  • Servlets and jsp
  • jdbc and databases (mainly postgresql and hsqldb)
  • struts and tiles

Good skills in statistics and data analysis. I do teach data analysis and R at the university (contract professor).

Main fields

  • Descriptive univariate data analysis.
  • Bivariate an multivariate inferential statistics: chi-square, correlation, t-test, anova.
  • Multivariate exploratory analysis: analysis of variance, principal component analysis, cluster analysis.
  • Nonparametric analysis, bootstrapping, computational simulations.

I recently began to learn and program in python.

Pakages I'm using:

  • pymongo
  • numpy, scipy
  • feedparser
  • simplejson
  • mako template

I can setup and use some Sql and NoSql databases

Sql databases

  • postgresql
  • hsqldb
  • sqlite

NoSql databases

  • mongodb
  • Neo4J

Free time and hobbies

What I like to do when I'm not working

I like to dance tango, and contact improvisation.


I like to take pictures

My account on Flickr


I like to read

My bookshelf, on Anoby


Whenever I can, I like to travel