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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

Measuring the likelihood property of scoring functions in general retrieval models

Bache, Richard ; Strathclyde, Glasgow, Scotland ; Baillie, Mark ; Glasgow, Scotland ; Crestani, Fabio ; Svizzera

In: Journal of the American society for information science and technology, 2009, vol. 60, no. 6, p. 1294-1297

Although retrieval systems based on probabilistic models will rank the objects (e.g. documents) being retrieved according to the probability of some matching criterion (e.g. relevance) they rarely yield an actual probability and the scoring function is interpreted to be purely ordinal within a given retrieval task. In this paper it is shown that some scoring functions possess the likelihood...

Università della Svizzera italiana

Context representation for web search results

Vegas, Jesus ; Crestani, Fabio ; De la Fuente, Pablo

In: Journal of information science, 2007, vol. 33, no. 1, p. 77-101

Context has long been considered very useful to help the user assess the actual relevance of a document. In Web searching, context can help assess the relevance of a Web page by showing how the page is related to other pages in the same Web site, for example. Such information is very difficult to convey and visualise in a user friendly way. In this paper we present the design, implementation and...

Università della Svizzera italiana

Metadata harvesting for content-based distributed information retrieval

Simeoni, Fabio ; Yakici, Murat ; Neely, Steve ; Crestani, Fabio

In: Journal of the American Society for information science and technology, 2008, vol. 59, no. 1, p. 12-24

We propose an approach to content-based Distributed Information Retrieval based on the periodic and incremental centralisation of full content indices of widely dispersed and autonomously managed document sources. Inspired by the success of the Open Archive Initiative’s protocol for metadata harvesting, the approach occupies middle ground between content crawling and distributed retrieval. As...