340 search results - page 20 / 68 » On second order operators and quadratic operators |
CAGD
2006
13 years 7 months ago
2006
We use various nonlinear partial differential equations to efficiently solve several surface modelling problems, including surface blending, N-sided hole filling and free-form sur...
SIGMOD
2000
ACM
13 years 12 months ago
2000
ACM
We discovered a surprising law governing the spatial join selectivity across two sets of points. An example of such a spatial join is "find the libraries that are within 10 m...
SIAMSC
2010
13 years 6 months ago
2010
In numerous applications of image processing, e.g. astronomical and medical imaging, data-noise is well-modeled by a Poisson distribution. This motivates the use of the negative-lo...
ICDE
2009
IEEE
14 years 2 months ago
2009
IEEE
— A spreadsheet-like “direct manipulation” interface is more intuitive for many non-technical database users compared to traditional alternatives, such as visual query builde...
DMDW
2003
13 years 9 months ago
2003
: Two main problems arise in modelling data warehouse structures. The first consists in establishing an adequate representation of dimensions in order to facilitate and to control ...