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COCO
2009
Springer
128views Algorithms» more  COCO 2009»
15 years 11 months ago
An Almost Optimal Rank Bound for Depth-3 Identities
—We show that the rank of a depth-3 circuit (over any field) that is simple, minimal and zero is at most O(k3 log d). The previous best rank bound known was 2O(k2 ) (log d)k−2...
Nitin Saxena, C. Seshadhri
PETRA
2010
ACM
15 years 5 months ago
Optimizing pervasive sensor data acquisition utilizing missing values substitution
Acquisition of pervasive sensor data can be often unsuccessful due to power outage at nodes, time synchronization issues, interference, network transmission failures or sensor har...
M. Michalopoulos, Christos Anagnostopoulos, Charal...
ALGORITHMICA
2008
95views more  ALGORITHMICA 2008»
15 years 4 months ago
Optimality in External Memory Hashing
Hash tables on external memory are commonly used for indexing in database management systems. In this paper we present an algorithm that, in an asymptotic sense, achieves the best...
Morten Skaarup Jensen, Rasmus Pagh
ADBIS
2009
Springer
140views Database» more  ADBIS 2009»
15 years 11 months ago
Optimizing Maintenance of Constraint-Based Database Caches
Abstract. Caching data reduces user-perceived latency and often enhances availability in case of server crashes or network failures. DB caching aims at local processing of declarat...
Joachim Klein 0002, Susanne Braun
ICDM
2007
IEEE
227views Data Mining» more  ICDM 2007»
15 years 11 months ago
Optimal Subsequence Bijection
We consider the problem of elastic matching of sequences of real numbers. Since both a query and a target sequence may be noisy, i.e., contain some outlier elements, it is desirab...
Longin Jan Latecki, Qiang Wang, Suzan Koknar-Tezel...