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DAWAK
2005
Springer
14 years 4 months ago
A Tree Comparison Approach to Detect Changes in Data Warehouse Structures
Abstract. We present a technique for discovering and representing changes between versions of data warehouse structures. We select a tree comparison algorithm, adapt it for the par...
Johann Eder, Christian Koncilia, Karl Wiggisser
ICCV
2007
IEEE
14 years 5 months ago
Structure from Motion with Missing Data is NP-Hard
This paper shows that structure from motion is NP-hard for most sensible cost functions when missing data is allowed. The result provides a fundamental limitation of what is possi...
David Nistér, Fredrik Kahl, Henrik Stew&eac...
WADS
1997
Springer
108views Algorithms» more  WADS 1997»
14 years 3 months ago
Dynamic Data Structures for Fat Objects and Their Applications
We present several efficient dynamic data structures for point-enclosure queries, involving convex fat objects in R2 or R3. Our planar structures are actually fitted for a more ...
Alon Efrat, Matthew J. Katz, Frank Nielsen, Micha ...
IEEEMSP
2002
IEEE
14 years 3 months ago
Factorization with missing data for 3D structure recovery
—Matrix factorization methods are now widely used to recover 3D structure from 2D projections [1]. In practice, the observation matrix to be factored out has missing data, due to...
Rui F. C. Guerreiro, Pedro M. Q. Aguiar
FPLE
1995
14 years 2 months ago
A Second Year Course on Data Structures Based on Functional Programming
In this paper, we make a proposal for a second year course on advanced programming, based on the functional paradigm. It assumes the existence of a first course on programming, al...
Manuel Núñez, Pedro Palao, Ricardo P...