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COMPSAC
1998
IEEE
14 years 2 months ago
The Essence of the Visitor Pattern
Abstract. For object-oriented programming, the Visitor pattern enables the definition of a new operation on an object structure without changing the classes of the objects. The pri...
Jens Palsberg, C. Barry Jay
ICDT
1999
ACM
133views Database» more  ICDT 1999»
14 years 2 months ago
A Framework for the Investigation of Aggregate Functions in Database Queries
Abstract. In this paper we present a new approach for studying aggregations in the context of database query languages. Starting from a broad de nition of aggregate function, we ad...
Luca Cabibbo, Riccardo Torlone
DCC
1998
IEEE
14 years 2 months ago
The Context Trees of Block Sorting Compression
Abstract. The Burrows-Wheeler transform (BWT) and block sorting compression are closely related to the context trees of PPM. The usual approach of treating BWT as merely a permutat...
N. Jesper Larsson
KI
1999
Springer
14 years 2 months ago
Systematic vs. Local Search for SAT
Abstract. Due to its prominence in artificial intelligence and theoretical computer science, the propositional satisfiability problem (SAT) has received considerable attention in...
Holger H. Hoos, Thomas Stützle
MICCAI
1999
Springer
14 years 2 months ago
Detection of Pulmonary Nodules on Ct and Volumetric Assessment of Change over Time
Abstract. We present a computer vision system that automatically detects pulmonary nodules in computed tomography (CT) scans of oncology patients, performs size analysis and assess...
Margrit Betke, Jane P. Ko