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Prolog, which stands for PROgramming in LOGic, is the most widely used language in the logic programming paradigm. One of its main concepts is unification. It represents the mechanism of binding the contents of variables and can be seen as solving conjunctions of equations over finite or infinite trees. We present in this paper an idea of a first-order… (More)

- Alain Colmerauer, Thi-Bich-Hanh Dao
- Constraints
- 2000

We are interested in the expressiveness of constraints represented by general first order formulae, with equality as unique relation symbol and function symbols taken from an infinite set F. The chosen domain is the set of trees whose nodes, in possibly infinite number, are labelled by elements of F. The operation linked to each element f of F is the… (More)

- Thi-Bich-Hanh Dao
- JFPLC
- 2000

RÉSUMÉ. Nous présentons dans ce papier un algorithme de résolution, dans la théorie T des arbres (éventuellement infinis), des contraintes représentées par des formules générales du premier ordre, avec pour seul symbole de relation l’égalité et pour symboles de fonctions les éléments d’un ensemble infini F. L’algorithme est constitué d’un ensemble de 11… (More)

- Thi-Bich-Hanh Dao, Khanh-Chuong Duong, Christel Vrain
- ECML/PKDD
- 2013

In recent years, clustering has been extended to constrained clustering, so as to integrate knowledge on objects or on clusters, but adding such constraints generally requires to develop new algorithms. We propose a declarative and generic framework, based on Constraint Programming, which enables to design clustering tasks by specifying an optimization… (More)

Blache [1] introduced Property Grammar as a formalism where linguistic information is represented in terms of non hierarchical constraints. This feature gives it an adequate expressive power to handle complex linguistic phenomena, such as long distance dependencies, and also agrammatical sentences [2]. Recently, Duchier et al. [3] proposed a model-theoretic… (More)

- Thi-Bich-Hanh Dao, Khanh-Chuong Duong, Christel Vrain
- Artif. Intell.
- 2017

In this paper, we present an abstract framework for learning a finite domain constraint solver modeled by a set of operators enforcing a consistency. The behavior of the consistency to be learned is taken as the set of examples on which the learning process is applied. The best possible expression of this operator in a given language is then searched. We… (More)

Although the observation of grammaticality judgements is well acknowledged, their formal representation faces problems of different kinds: linguistic, psycholinguistic, logical, computational. In this paper we focus on addressing some of the logical and computational aspects, relegating the linguistic and psycholinguistic ones in the parameter space. We… (More)