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Università della Svizzera italiana

Concept-based semantic annotation, indexing and retrieval of office-like document units

Nešic, Saša ; Jazayeri, Mehdi ; Crestani, Fabio ; Gaševic, Dragan

We present an ontology-driven approach to semantic annotation, indexing and retrieval of document units. This approach is based on a novel semantic document model (SDM) that we developed to make office-like document units be uniquely identified, semantically annotated with concepts from annotation ontologies and linkable across document boundaries. In the semantic annotation model that we...

Università della Svizzera italiana


Crestani, Fabio ; Ferragina, Paolo ; Sanderson, Mark

In: Information retrieval, 2008, vol. 11, no. 4, p. 267-268

Università della Svizzera italiana

Theme issue on interactive mobile information access

Crestani, Fabio ; Dunlop, Mark ; Jones, Matt ; Jones, Steve ; Mizzaro, Stefano

In: Personal and ubiquitous computing, 2006, vol. 10, no. 4, p. 193-194

Università della Svizzera italiana

A language modelling approach to linking criminal styles with offender characteristics

Bache, Richard ; Crestani, Fabio ; Canter, David ; Youngs, Donna

In: Data & knowledge engineering, 2010, vol. 69, no. 3, p. 303-315

The ability to infer the characteristics of offenders from their criminal behaviour (‘offender profiling’) has only been partially successful since it has relied on subjective judgments based on limited data. Words and structured data used in crime descriptions recorded by the police relate to behavioural features. Thus Language Modelling was applied to an existing police archive to link ...

Università della Svizzera italiana

Appearance and functionality of electronic books : lessons from the visual book and hyper-textbook projects

Crestani, Fabio ; Landoni, Monica ; Melucci, Massimo

In: International journal on digital libraries, 2006, vol. 6, no. 2, p. 192-209

We present the results and the lessons learned from two separate and independent studies into the design, development, and evaluation of electronic books for information access: the Visual Book and the Hyper-TextBook. The Visual Book explored the importance of the visual component of the book metaphor in the production of “good” electronic books for referencing. The Hyper-TextBook...

Università della Svizzera italiana

Effective search results summary size and device screen size : is there a relationship?

Sweeney, Simon ; Crestani, Fabio

In: Information processing & management, 2006, vol. 42, no. 2, p. 1056-1074

In recent years, small screen devices have seen widespread increase in their acceptance and use. Combining mobility with increased technological advances many such devices can now be considered mobile information terminals. However, user interactions with small display devices remain a challenge due to the inherent input restrictions and limited display capabilities. These challenges are...

Università della Svizzera italiana

Mixing and merging for spoken document retrieval

Crestani, Fabio

In: Lecture notes in computer science, 2009, vol. 1513, p. 397-407

This paper describes a number of experiments that explored the issues surrounding the retrieval of spoken documents. Two such issues were examined. First, attempting to find the best use of speech recogniser output to produce the highest retrieval effectiveness. Second, investigating the potential problems of retrieving from a so-called "mixed collection", i.e. one that contains documents from...

Università della Svizzera italiana

Spoken query processing for information access in digital libraries

Crestani, Fabio

In: Lecture notes in computer science, 2009, vol. 1923, p. 324-327

We briefly outline the ongoing research at Strathclyde University on the use of spoken query processing for information access in digital libraries.

Università della Svizzera italiana

Written versus spoken queries : a qualitative and quantitative comparative analysis

Crestani, Fabio ; Du, Heather

In: Journal of the American Society for information science and technology, 2006, vol. 57, no. 7, p. 881-890

This paper reports on an experimental study on the differences between spoken and written queries. A set of written and spontaneous spoken queries are generated by users from written topics. These two sets of queries are compared in qualitative terms and in terms of their retrieval effectiveness. Written and spoken queries are compared in terms of length, duration, and part of speech. In...

Università della Svizzera italiana

Adaptive query-based sampling of distributed collections

Baillie, Mark ; Azzopardi, Leif ; Crestani, Fabio

In: Lecture Notes in Computer Science, 2006, vol. 4209, p. 316-328

As part of a Distributed Information Retrieval system a description of each remote information resource, archive or repository is usually stored centrally in order to facilitate resource selection. The acquisition of precise resource descriptions is therefore an important phase in Distributed Information Retrieval, as the quality of such representations will impact on selection accuracy, and...