Aktuelles & Termine


Keyword-Based Querying of Points of Interest

Prof. Christian S. Jensen
Aalborg University

The web is being accessed increasingly by users for which an accurate geo-location is available, and a spatial, or geographical, web is surfacing where content is associated with locations, resulting in so-called Points of Interest, that are used in a wide range of location-based services. In particular, studies suggest that each week, several billions of web queries are issued that have some form of local intent and that target Points of Interest with locations and textual descriptions.

This state of affairs gives prominence to spatial web data management, and it opens to a research area full of new and exciting opportunities and challenges. A prototypical spatial web query takes a user location and user-supplied keywords as arguments, and it returns Points of Interest that are spatially and textually relevant to these arguments. Due perhaps to the rich semantics of geographical space and its importance to our daily lives, many different kinds of relevant spatial web queries may be envisioned.

Based on recent and ongoing work by the speaker and his colleagues, the talk presents key functionality, concepts, and techniques relating to spatial web querying; it presents functionality that addresses different kinds of local intent; and it outlines directions for the future development of keyword-based spatial web querying.

Date: 14.11.2014

Time: 15:30 h

Location: Cartesium, Bremen


Bio: Christian S. Jensen is Obel Professor of Computer Science at Aalborg University, Denmark, and he was previously with Aarhus University for three years and spent a one-year sabbatical at Google Inc., Mountain View. His research concerns data management and data-intensive systems, and its focus is on temporal and spatio-temporal data management. Christian is an ACM and an IEEE Fellow, and he is a member of Academia Europaea, the Royal Danish Academy of Sciences and Letters, and the Danish Academy of Technical Sciences. He has received several national and international awards for his research. He is Editor-in-Chief of ACM Transactions on Database Systems.