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IGARSS
2009
15 years 4 months ago
Improving NDVI Time Series Class Separation using an Extended Kalman Filter
It is proposed that the NDVI time series derived from MODIS multitemporal remote sensing data can be modelled as a triply (mean, phase and amplitude) modulated cosine function. A ...
Waldo Kleynhans, J. Corne Olivier, Brian P. Salmon...
FPGA
1999
ACM
115views FPGA» more  FPGA 1999»
15 years 11 months ago
Using Cluster-Based Logic Blocks and Timing-Driven Packing to Improve FPGA Speed and Density
In this paper, we investigate the speed and area-efficiency of FPGAs employing “logic clusters” containing multiple LUTs and registers as their logic block. We introduce a ne...
Alexander Marquardt, Vaughn Betz, Jonathan Rose
VLDB
1999
ACM
149views Database» more  VLDB 1999»
15 years 11 months ago
The Persistent Cache: Improving OID Indexing in Temporal Object-Oriented Database Systems
In a temporal OODB, an OID index (OIDX) is needed to map from OID to the physical location of the object. In a transaction time temporal OODB, the OIDX should also index the objec...
Kjetil Nørvåg
ICPR
2010
IEEE
15 years 10 months ago
Improving Undersampled MRI Reconstruction Using Non-Local Means
Obtaining high quality images in MR is desirable not only for accurate visual assessment but also for automatic processing to extract clinically relevant parameters. Filtering-bas...
Ganesh Adluru, Tolga Tasdizen, Ross Whitaker, Edwa...
ICDM
2007
IEEE
147views Data Mining» more  ICDM 2007»
15 years 10 months ago
Improving Knowledge Discovery in Document Collections through Combining Text Retrieval and Link Analysis Techniques
In this paper, we present Concept Chain Queries (CCQ), a special case of text mining in document collections focusing on detecting links between two topics across text documents. ...
Wei Jin, Rohini K. Srihari, Hung Hay Ho, Xin Wu