| Search tasks (standard ad-hoc
topics) |
For this
task, we provide a list of topic statements and a collection of images with
semi-structured captions in English and German (the target languages). The
English version of the topics consist of a title (a short sentence or phrase
describing the search request in a few words), and a narrative (a description
of what constitutes a relevant or non-relevant image for that search request).
For 2006, the main focus for retrieval is on using the title field and not
comparing the use of title and narrative, for example. The title field has been
translated into several different languages.
- Download standard ad-hoc topics for 2006 (zip archive
file)
With each topic,
we also provide three example relevant images:. An example topic for English is
the following:
<top>
<num> Number: 1 </num>
<title> accommodation with swimming pool </title>
<narr>
Relevant images will show the building of an accommodation facility (e.g.
hotels, hostels, etc.) with a swimming pool. Pictures without swimming pools or
without buildings are not relevant. </narr>
<image>
images/03/3793.jpg </image>
<image> images/06/6321.jpg
</image>
<image> images/06/6395.jpg </image>
</top>
The topics for 2006 have been
based on several factors including: (1) the analysis of a log file from the
viventura travel company, (2) knowledge of the contents of the image
collection, (3) various types of linguistic and pictorial attributes such as
visual vs. semantic; specific vs. general objects; use of proper names and (4)
past research on image retrieval search, e.g. Enser, P. (1995). Pictorial
Information Retrieval. Journal of Documentation, 51(2),
126-170.
Many of the queries for 2006 also exhibit some kind of vocabulary
mismatch with the image captions (e.g. accomodation instead of hotel or
guesthouse). This is one aspect of retrieval we are particularly interested in
experimenting with and would encourage participants to explore this aspect.
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