How to exploit the incredible variety of JSON data sets currently available on the Internet, for
example, on Open Data portals? The traditional approach would require getting them from …

The paper discusses the need of a high-level query language to allow analysts,
geographers and, in general, non-programmers to easily cross-analyze multi-source VGI …

The need for cross-analyzing JSON objects representing heterogeneous geo-referenced
information coming from multiple sources, such as open data published on the Web by …

We present a framework to mine relations and group variables that represent measurement
and status information from sensors and actuators in office buildings. Our work is motivated …

This paper describes the architecture and the functionalities of a clustering search engine
prototypal system, named Matrioshka, whose peculiarity is the flexibility of the interaction …

Social media represent an inexhaustible source of information concerning public places
(also called points of interest (POIs)), provided by users. Several social media own and …

For transparency and democracy reasons, a few years ago Public Administrations started
publishing data sets concerning public services and territories. These data sets are called …

To make the search engine more user-friendly, commercial search engines commonly
develop applications to provide suggestion or recommendation for every posed query …

This paper proposes a novel language in order to explore the results retrieved by several
internet search services and search engines that cluster retrieved documents. The goal of …

In this paper we propose a query disambiguation mechanism for query context focalization
in a meta-search environment. Our methods start from a set of documents retrieved …