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DAC
2003
ACM
16 years 6 months ago
An O(nlogn) time algorithm for optimal buffer insertion
The classic algorithm for optimal buffer insertion due to van Ginneken has time and space complexity O(n2 ), where n is the number of possible buffer positions. We present a new a...
Weiping Shi, Zhuo Li
VLDB
2006
ACM
147views Database» more  VLDB 2006»
16 years 5 months ago
Answering queries using materialized views with minimum size
In this paper we study the following problem. Given a database and a set of queries, we want to find a set of views that can compute the answers to the queries, such that the amoun...
Rada Chirkova, Chen Li, Jia Li
VLDB
2007
ACM
121views Database» more  VLDB 2007»
16 years 5 months ago
Efficient Keyword Search over Virtual XML Views
Emerging applications such as personalized portals, enterprise search and web integration systems often require keyword search over semi-structured views. However, traditional inf...
Feng Shao, Lin Guo, Chavdar Botev, Anand Bhaskar, ...
PODS
2003
ACM
113views Database» more  PODS 2003»
16 years 5 months ago
Materializing views with minimal size to answer queries
In this paper we study the following problem. Given a database and a set of queries, we want to find, in advance, a set of views that can compute the answers to the queries, such ...
Rada Chirkova, Chen Li
GROUP
2009
ACM
15 years 11 months ago
Cluestr: mobile social networking for enhanced group communication
Recent technological advances foster the spreading of social software in the mobile domain. Hence, future usage patterns of mobile devices will involve more group interaction. Whi...
Reto Grob, Michael Kuhn 0002, Roger Wattenhofer, M...