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SIGIR
2003
ACM
16 years 9 days ago
Structured use of external knowledge for event-based open domain question answering
One of the major problems in question answering (QA) is that the queries are either too brief or often do not contain most relevant terms in the target corpus. In order to overcom...
Hui Yang, Tat-Seng Chua, Shuguang Wang, Chun-Keat ...
SMA
2003
ACM
154views Solid Modeling» more  SMA 2003»
16 years 9 days ago
Discretization of functionally based heterogeneous objects
The presented approach to discretization of functionally defined heterogeneous objects is oriented towards applications associated with numerical simulation procedures, for exampl...
Elena Kartasheva, Valery Adzhiev, Alexander A. Pas...
SMA
2003
ACM
170views Solid Modeling» more  SMA 2003»
16 years 9 days ago
Contour generators of evolving implicit surfaces
The contour generator is an important visibility feature of a smooth object seen under parallel projection. It is the curve on the surface which seperates front-facing regions fro...
Simon Plantinga, Gert Vegter
FIMH
2003
Springer
16 years 8 days ago
Spatio-temporal Alignment of 4D Cardiac MR Images
Abstract. A 4D registration method for the spatio-temporal alignment of cardiac MR image sequences has been developed. The registration algorithm has the ability not only to correc...
Dimitrios Perperidis, Anil Rao, Maria Lorenzo-Vald...
GLVLSI
2002
IEEE
106views VLSI» more  GLVLSI 2002»
16 years 9 hour ago
A low power direct digital frequency synthesizer with 60 dBc spectral purity
We present a low-power sine-output Direct Digital Frequency Synthesizer (DDFS) realized in 0.18 µm CMOS that achieves 60 dBc spectral purity from DC to the Nyquist frequency. No ...
J. M. Pierre Langlois, Dhamin Al-Khalili