The MIEL system: Uniform interrogation of structured and weakly-structured imprecise data

Representation of weakly structured imprecise data for fuzzy querying

In the present paper, we introduce an extension of the conceptual graph model suitable to the representation 7 of data which are modelized using fuzzy sets. We extend the specialization relation of the conceptual graph model to fuzzy conceptual graphs. Lastly we introduce a new way of comparing conceptual graphs, using the 9 idea that a graph may be compatible with another graph with a given de...

Structured recursion for non-uniform data-types

Recursion is a simple but powerful programming technique used extensively in functional languages. For a number of reasons, however, it is often desirable to use structured forms of recursion in programming, encapsulated in so-called recursion operators, in preference to unrestricted recursion. In particular, using recursion operators has proved invaluable for transforming and reasoning about f...

Design for Weakly Structured Environments

Economic theory abounds in simple stylized models. How often we see consumers’ preferences parameterized by one-dimensional types; uncertainty represented by two possible states of nature, with agents receiving conditionally independent signals (or perhaps, normally distributed states, observed with normal noise); workers choosing a one-dimensional level of effort. Economic design, as a field, ...

Mining Structured Data Mining Structured Data

Structured and Semi-Structured Data Integration

Acknowledgements Everything started one day of June 2000, when I decided to go Erasmus at the Ecole Polytechnique in Paris, and I was suggested to attend there the databases lectures given by Prof. Abiteboul. When in January 2001, I decided to follow the extra-lectures of Prof. Abiteboul in order to present a databases project, he was so nice to sit beside me and teach me how to write my first ...