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AMAI
2007
Springer
13 years 10 months ago
Database querying under changing preferences
We present here a formal foundation for an iterative and incremental approach to constructing and evaluating preference queries. Our main focus is query modification: a query tran...
Jan Chomicki
CORR
2011
Springer
201views Education» more  CORR 2011»
13 years 1 months ago
An Achievable Rate Region for the Broadcast Channel with Feedback
A single-letter achievable rate region is proposed for the two-receiver discrete memoryless broadcast channel with noiseless or noisy feedback. The coding strategy involves block-...
Ramji Venkataramanan, S. Sandeep Pradhan
ISSEP
2005
Springer
90views Education» more  ISSEP 2005»
14 years 3 months ago
Preparatory Knowledge: Propaedeutic in Informatics
In the recent past a number of concepts have achieved prominence in the quest for basic principles of informatics with long-term validity. Particularly at schools providing an all-...
Susanne Loidl, Jörg R. Mühlbacher, Helmu...
MP
2008
92views more  MP 2008»
13 years 9 months ago
Invariance and efficiency of convex representations
We consider two notions for the representations of convex cones: G-representation and liftedG-representation. The former represents a convex cone as a slice of another; the latter...
Chek Beng Chua, Levent Tunçel
ICIC
2007
Springer
14 years 4 months ago
Analysis of Pi Series and Its Application to Image Encryption
Whether constant π (i.e., pi) is normal is a confusing problem without any strict theoretical demonstration except for some statistical proof. A new concept of pi series is introd...
Ting Chen, Feng Li