Nowadays, in information systems such as web search engines and databases, diversity is
becoming increasingly essential and getting more and more attention for improving users' …

Geographical information is recorded in a wide variety of media and document types. There
are innumerable paper-based books, reports, images and maps, and there are computer …

Much of the information stored on the web contains geographical context, but current search
engines treat such context in the same way as all other content. In this paper we describe …

Personalization of search results offers the potential for significant improvements in Web
search. Among the many observable user attributes, approximate user location is …

This paper investigates diversity queries over objects embedded in a low-dimensional
vector space. An interesting case is provided by spatial Web objects, which are produced in …

With the increasing pervasiveness of the geo-positioning technologies, there is an
enormous amount of spatio-textual objects available in many applications such as location …

This paper describes research that aims to define the information needs of mobile
individuals, to implement a mobile information system that can satisfy those needs, and …

The abundance and ubiquity of RDF data (such as DBpedia and YAGO2) necessitate their
effective and efficient retrieval. For this purpose, keyword search paradigms liberate users …

More often than not, spatial objects are associated with some context, in the form of text,
descriptive tags (eg points of interest, flickr photos), or linked entities in semantic graphs (eg …

This research compares the geographic information retrieval (GIR) performance of a set of
logistic regression models with those of five non‐probabilistic methods that compute a …