TY  - CHAP
N1  - EDBT/ICDT 2011 - 14th International Conference on Extending Database Technology - March 21-25, 2011, Uppsala, Sweden 
ID  - eprints1449
EP  - 104
T2  - Proceedings of EDBT ?11: 14th International Conference on Extending Database Technology
TI  - Caching query-biased snippets for efficient retrieval
AV  - none
Y1  - 2011///
KW  - caching
KW  -  efficiency
KW  -  snippet generation
KW  -  throughput
KW  -  web search engines
UR  - http://www.edbt.org/Proceedings/2011-Uppsala/papers/edbt/a10-ceccarelli.pdf
A1  - Ceccarelli, Diego
A1  - Lucchese, Claudio
A1  - Orlando, Salvatore
A1  - Perego, Raffaele
A1  - Silvestri, Fabrizio
SN  - 978-1-4503-0528-0 
PB  - EDBT/ICDT
N2  - Web Search Engines' result pages contain references to the
top-k documents relevant for the query submitted by a user.
Each document is represented by a title, a snippet and a
URL. Snippets, i.e. short sentences showing the portions
of the document being relevant to the query, help users to
select the most interesting results. The snippet generation process is very expensive, since it may require to access a number of documents for each issued query. We assert that caching, a popular technique used to enhance performance at various levels of any computing systems, can be very effective in this context. We design and experiment several cache organizations, and we introduce the concept of supersnippet, that is the set of sentences in a document that are more likely to answer future queries. We show that supersnippets can be built by exploiting query logs, and that in our experiments a supersnippet cache answers up to 62% of the requests, remarkably outperforming other caching approaches.
SP  - 93
ER  -