In the past two years a system has been implemented which accepts as input a query in Italian and produces a representation of the query which is easily interpretable as a sequence of algebraic operations on a relational data base /1/. The main features of the system can be summarized as:
The increasing lexicalization of syntactic theories poses new difficulties for incremental models of language processing. In this paper, we describe an incremental interpreter that makes use of knowledge on categories to keep the syntactic structure always connected. This, in turn, guarantees a fine-grained syntax-semantics interaction. The paper introduces the general problem of formalizing the notion of incremental interpretation, and analyzes the current approaches in the cognitive literature.
This paper presents an approach to semantic interpretation for MTT that accounts for
ambiguities of quantifier scoping. Dependency Tree Semantics (DTS) is described as a target
formalism that introduces in the SemS a mechanism for dealing with quantifiers. DTS is
based on underspecification, i.e. all ambiguous interpretations of a quantified sentence are
represented in a single structure, where the scope relations are not given. The underspecified
representations can be extended by adding dependency arcs that express the scope ordering
when enough information is available for the disambiguation. Since a single underspecified
structure covers all readings of a sentence, the mapping from the SSyntS to the SemS is
heavily simplified. In order to provide some evidence about this, the paper includes the
definition of the syntax-semantics mapping for a small fragment of English.
The paper investigates the problem of providing a formal device for the dependency approach to syntax, and to link it with a parsing model. After reviewing the basic tenets of the paradigm and the few existing mathematical results, we describe a dependency formalism which is able to deal with long-distance dependencies. Finally, we present an Earley-style parser for the formalism and discuss the (polynomial) complexity results.
The Legal Taxonomy Syllabus methodology has been used to represent legal information at different levels such, e.g., European Directives, and their transpositions into national legislations. In this paper we point out the main issues of this approach, and extend it to account for a further level, the Acquis Principles level.
This paper presents a model of agent's behavior that takes into account emotions and moral values. In our proposal, when the description of the current situation reveals that a moral value is 'at stake', the moral goal of re-establishing the threatened value is included among the active goals. The compliance with values generates positive emotions like pride and admiration, while the opposite brings to shame and self-reproach.During the deliberation phase, the agent appraises her plans in terms of the emotional reward they are expected to yield, given the trade off between moral and individual goals. In this phase, the emotional reward affects the agent's choices about her behavior. After the execution phase, one's and others' actions are appraised again in terms of the agent's values, giving rise to moral emotions.The paper shows how emotional appraisal can be coupled with the choice among possible lines of action, presenting a mapping between plans and emotions that integrates and extends preceding proposals.
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