Archive for » March, 2012 «

Thursday, March 08th, 2012 | Author:

A journal paper with my vision on data interoperability and a basis formalization has been accepted for a special issue of the Journal of IT volume 54, issue 3.
Managing Uncertainty: The Road Towards Better Data Interoperability.
Maurice van Keulen
Data interoperability encompasses the many data management activities needed for effective information management in anyone´s or any organization´s everyday work such as data cleaning, coupling, fusion, mapping, and information extraction. It is our conviction that a significant amount of money and time in IT that is devoted to these activities, is about dealing with one problem: “semantic uncertainty”. Sometimes data is subjective, incomplete, not current, or incorrect, sometimes it can be interpreted in different ways, etc. In our opinion, clean correct data is only a special case, hence data management technology should treat data quality problems as a fact of life, not as something to be repaired afterwards. Recent approaches treat uncertainty as an additional source of information which should be preserved to reduce its impact. We believe that the road towards better data interoperability, is to be found in teaching our data processing tools and systems about all forms of doubt and how to live with them. In this paper, we show for several data interoperability use cases (deduplication, data coupling/fusion, and information extraction) how to formally model the associated data quality problems as semantic uncertainty. Furthermore, we provide an argument why our approach leads to better data interoperability in terms of natural problem exposure and risk assessment, more robustness and automation, reduced development costs, and potential for natural and effective feedback loops leveraging human attention.

Thursday, March 01st, 2012 | Author:

Together with one of my PhD students, Victor de Graaff, and Rolf de By, we got a paper accepted at the WI&C workshop at WWW 2012. It describes our research plans on geo-social recommendation in the COMMIT/TimeTrails project.
Towards Geosocial Recommender Systems
Victor de Graaff, Maurice van Keulen, Rolf de By
The usage of social networks sites (SNSs), such as Facebook, and geosocial networks (GSNs), such as Foursquare, has increased tremendously over the past years. The willingness of users to share their current locations and experiences facilitate the creation of geographical recommender systems based on user generated content (UGC). This idea has been used to create a substantial amount of geosocial recommender systems (GRSs), such as Gogobot, TripIt, and Trippy already, but can be applied to more complex scenarios, such as the recommendation of products with a strong binding to their region, such as real estate or vacation destinations.
This extended form of GRS development requires advanced functionality for information collection (from the web, other social media and sensors), information enrichment (such as data quality assessment and advanced data analysis), and personalized recommendations. The creation of a toolset to cope with these challenges is the goal of this research project, for which the outline is presented in this paper.
The paper will be presented at the WI&C workshop co-located with WWW 2012, 16 April 2012, Lyon, France [details]

Category: COMMIT  | Comments off