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167
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JSAT
2010
15 years 1 months ago
2010
Groote and Zantema proved that a particular OBDD computation of the pigeonhole formula has exponential size, and that limited OBDD derivations cannot simulate resolution polynomia...
140
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CHI
2009
ACM
16 years 6 months ago
2009
ACM
Instant messaging allows users to exchange presence and availability information, and to have spontaneous online conversations. We report on a study of account sharing in IM, and ...
209
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WECWIS
2003
IEEE
15 years 11 months ago
2003
IEEE
The huge success of eBay has proven the demand for customer-to-customer (C2C) electronic commerce. eBay is a centralized infrastructure with all its scalability problems (network ...