Ricardo Campos,

U – Instituto Politécnico de Tomar


The amount of information that is produced every day is growing exponentially. New pages are added, deleted or simply updated at an incredible pace. With this steady increasing growth of the web a huge amount of temporal information has become widely available. This information can be very useful in helping to meet the users’ information needs whenever they include temporal intents. However retrieving the information that meets the user temporal query demands is still an open challenge. The ambiguity of the query is traditionally one of the causes impeding the retrieval of relevant information. This is particularly evident in the case of temporal queries where users tend to be subjective when expressing their intents (e.g., “avatar movie” instead of “avatar movie 2009”). Determining the possible times of the query is therefore of the utmost importance when attempting to achieve more effective results. In this talk, we will describe how to use the information extracted from web page contents to reach this goal. The fact that relevant temporal expressions to the query can be automatically determined, proves its usefulness by paving the way to the emergence of a number of temporal IR applications, which we will survey in this talk. We will specifically focus on GTE-Cluster and GTE-Rank, two temporal applications that stems from this research.


Ricardo Campos is an assistant professor at the ICT Departmental Unit of the Polytechnic Institute of Tomar (IPT) and member of LIAAD-INESC TEC, the Artificial Intelligence and Decision Support Lab of U. Porto.

He is PhD in Computer Science by the University of Porto (UP), MSc. on Computer Science Engineering by the University of Beira Interior (UBI) and BSc. in Maths and Computer Science, currently Computer Science (UBI).

He completed his PhD thesis on 5th of June 2013, under the supervision of Professor Gaël Dias and Professor Alípio Jorge and an evaluation committee composed of Professor Ricardo Baeza-Yates VP of Yahoo! Research Labs, Professor António Branco, University of Lisbon, Professor Luis Torgo, University of Porto and Professor Cristina Ribeiro, University of Porto.

His work on temporal information retrieval led him to won the Fraunhofer Portugal Challenge 2013 and to be distinguished as an “outstanding” researcher by the INESC TEC research lab.

His research interests are Information Retrieval, Web Mining and Information Systems. In particular, he focuses on how temporal features impact the improvement of web search systems. Thus, he is working on implicit temporal queries, temporal query understanding, temporal retrieval, clustering and ranking.


Date: 2015-Jul-20     Time: 14:30:00     Room: 336

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