380 search results - page 8 / 76 » A Categorical Setting for Lower Complexity |
168
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STOC
2002
ACM
16 years 6 months ago
2002
ACM
The collision problem is to decide whether a function X : {1, . . . , n} {1, . . . , n} is one-to-one or two-to-one, given that one of these is the case. We show a lower bound of...
183
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COCO
2004
Springer
15 years 10 months ago
2004
Springer
Based on the framework of parameterized complexity theory, we derive tight lower bounds on the computational complexity for a number of well-known NP-hard problems. We start by pr...
189
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COCO
1999
Springer
15 years 11 months ago
1999
Springer
Recent work by Bernasconi, Damm and Shparlinski showed that the set of square-free numbers is not in AC0 , and raised as an open question whether similar (or stronger) lower bound...
164
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CICLING
2004
Springer
16 years 6 hour ago
2004
Springer
When text categorization is applied to complex tasks, it is tedious and expensive to hand-label the large amounts of training data necessary for good performance. In this paper, we...
161
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WWW
2005
ACM
16 years 7 months ago
2005
ACM
Taxonomies of the Web typically have hundreds of thousands of categories and skewed category distribution over documents. It is not clear whether existing text classification tech...