16,706 research outputs found
Semantic Component Composition
Building complex software systems necessitates the use of component-based
architectures. In theory, of the set of components needed for a design, only
some small portion of them are "custom"; the rest are reused or refactored
existing pieces of software. Unfortunately, this is an idealized situation.
Just because two components should work together does not mean that they will
work together.
The "glue" that holds components together is not just technology. The
contracts that bind complex systems together implicitly define more than their
explicit type. These "conceptual contracts" describe essential aspects of
extra-system semantics: e.g., object models, type systems, data representation,
interface action semantics, legal and contractual obligations, and more.
Designers and developers spend inordinate amounts of time technologically
duct-taping systems to fulfill these conceptual contracts because system-wide
semantics have not been rigorously characterized or codified. This paper
describes a formal characterization of the problem and discusses an initial
implementation of the resulting theoretical system.Comment: 9 pages, submitted to GCSE/SAIG '0
Canonical correlation analysis and DEA for azorean agriculture efficiency
In this paper we will document the application of canonical correlation analysis to variable aggregation using the correlations of the original variables with the canonical variates. A case study, about farms in Terceira Island, with a small data set is presented. In this data set of 30 farms we intend to use 17 input variables and 2 output variables to measure DEA efficiency. Without any data reduction procedure several problems known as “curse of dimensionality” are expected. With the data reduction procedures suggested it was possible to conclude quite acceptable and domain consistent conclusions.N/
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