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SOFSEM
2007
Springer
15 years 7 months ago
Indexing Factors with Gaps
Indexing of factors is a widely used and useful technique in stringology and can be seen as a tool in solving diverse text algorithmic problems. A gapped-factor is a concatenation ...
M. Sohel Rahman, Costas S. Iliopoulos
ICALP
2009
Springer
16 years 2 months ago
Towards Optimal Range Medians
We consider the following problem: given an unsorted array of n elements, and a sequence of intervals in the array, compute the median in each of the subarrays defined by the inter...
Beat Gfeller, Peter Sanders
104
Voted
DCC
2008
IEEE
16 years 1 months ago
Explicit constructions for perfect hash families
Let k, v, t be integers such that k v t 2. A perfect hash family PHF(N; k, v, t) can be defined as an N ? k array with entries from a set of v symbols such that every N ?t suba...
Sosina Martirosyan, Tran van Trung
MFCS
2007
Springer
15 years 8 months ago
Exact Algorithms for L (2, 1)-Labeling of Graphs
The notion of distance constrained graph labelings, motivated by the Frequency Assignment Problem, reads as follows: A mapping from the vertex set of a graph G = (V, E) into an in...
Jan Kratochvíl, Dieter Kratsch, Mathieu Lie...
STACS
1999
Springer
15 years 6 months ago
Costs of General Purpose Learning
Leo Harrington surprisingly constructed a machine which can learn any computable function f according to the following criterion (called Bc∗ -identification). His machine, on t...
John Case, Keh-Jiann Chen, Sanjay Jain