Mobility

What’s your Value of Travel Time? Collecting Traveler-centered Mobility Data via Crowdsourcing

Mobility solutions usually focus on time savings, proposing to users solutions that include the shortest or fastest paths. Nevertheless, users might perceive travel time as valuable (worthwhile) when it can be associated with other activities. In an ICWSM 2021 paper, with Cristian Consonni, Silvia Basile, Matteo Manca, André Freitas, Tatiana Kovacikova, Ghadir Pourhashem, and Yannick …

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Algorithmic bias Algorithmic fairness Recommender systems

Disparate Impact in Item Recommendation: a Case of Geographic Imbalance

Data imbalances, related to the country of production of an item, lead to the under-recommendation of items produced in the smaller (less represented) countries. Re-ranking the recommendation lists, by balancing item relevance with the promotion of items produced in smaller countries can introduce equity in terms of visibility and exposure, without affecting recommendation effectiveness. In …

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