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APAL
2006
64views more  APAL 2006»
13 years 4 months ago
What can be efficiently reduced to the Kolmogorov-random strings?
We investigate the question of whether one can characterize complexity classes (such as PSPACE or NEXP) in terms of efficient reducibility to the set of Kolmogorovrandom strings R...
Eric Allender, Harry Buhrman, Michal Koucký
VLDB
2008
ACM
136views Database» more  VLDB 2008»
14 years 5 months ago
Efficient updates in dynamic XML data: from binary string to quaternary string
XML query processing based on labeling schemes has been thoroughly studied in the past several years. Recently efficient processing of updates in dynamic XML data has gained more a...
Changqing Li, Tok Wang Ling, Min Hu
ICCTA
2007
IEEE
13 years 8 months ago
What Graphs can be Efficiently Represented by BDDs?
We have carried out experimental research into implicit representation of large graphs using reduced ordered binary decision diagrams (OBDDs). We experimentally show that for grap...
Changxing Dong, Paul Molitor
SIGMOD
2008
ACM
142views Database» more  SIGMOD 2008»
14 years 4 months ago
Cost-based variable-length-gram selection for string collections to support approximate queries efficiently
Approximate queries on a collection of strings are important in many applications such as record linkage, spell checking, and Web search, where inconsistencies and errors exist in...
Xiaochun Yang, Bin Wang, Chen Li
ICDE
2009
IEEE
135views Database» more  ICDE 2009»
14 years 6 months ago
Space-Constrained Gram-Based Indexing for Efficient Approximate String Search
Abstract-- Answering approximate queries on string collections is important in applications such as data cleaning, query relaxation, and spell checking, where inconsistencies and e...
Alexander Behm, Shengyue Ji, Chen Li, Jiaheng Lu