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Electronic Colloquium on Computational Complexity

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TR01-086 | 29th October 2001
Nikolay Vereshchagin

Kolmogorov Complexity Conditional to Large Integers

Assume that for almost all n Kolmogorov complexity
of a string x conditional to n is less than m.
We prove that in this case
there is a program of size m+O(1) that given any sufficiently large
n outputs x.

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TR01-085 | 1st October 2001
Gerhard J. Woeginger

Resource augmentation for online bounded space bin packing

We study online bounded space bin packing in the resource
augmentation model of competitive analysis.
In this model, the online bounded space packing algorithm has
to pack a list L of items in (0,1] into a small number of
bins of size b>=1.
Its performance is measured by comparing the ... more >>>


TR01-084 | 1st October 2001
Gerhard J. Woeginger

When does a dynamic programming formulation guarantee the existence of an FPTAS?

We derive results of the following flavor:
If a combinatorial optimization problem can be formulated via a dynamic
program of a certain structure and if the involved cost and transition
functions satisfy certain arithmetical and structural conditions, then
the optimization problem automatically possesses a fully polynomial time
approximation scheme (FPTAS).

... more >>>


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