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Negation and negative indefinites raise problems for the principle of compositionality of meaning, because we find both double and single negation readings in natural languages. De Swart and Sag (2002) solve the compositionality problem in a polyadic quantifier framework. The syntax-semantics interface exploits an extension of the Cooper storage mechanism that HPSG uses to account for scope ambiguities. In de Swart and Sag (2002), all negative quantifiers are collected into an N-store, and are interpreted by means of iteration (double negation) or resumption (negative concord) upon retrieval. This puts the ambiguity between single and double negation readings in the grammar, rather than in the lexical items. This paper extends the earlier analysis with a typology of negation and negative indefinites using bi-directional optimality theory (OT). The constraints defined are universal, but their ranking varies from one language to the next. In negative concord languages, the functional motivation for the marking of 'negative variables' wins out, so we use n-words. Double negation languages value first-order iteration, so we use plain indefinites or negative polarity items within the scope of negation. The bi-directional set-up is essential, for syntactic and semantic variation go hand in hand.
A compound matrix
(2004)
This paper presents a suplement to the Grammar Matrix, namely what I call a Compound Matrix ; in reality, it is not a matrix, since the type file includes a fully specified cross-linguistic inventory of compound types. The idea is that the grammar writer can comment out the ungrammatical types for his or her own language. The theory behind the typology is presented here in a bottom-up fashion, from the basic assumptions to the actual linguistic types.
Relative clauses (RCs) in Persian are head-modifying constituents, all typically introduced by the invariant complementizer ke. Persian RCs are Unbounded Dependency Constructions (UDCs), containing either a gap or a resumptive pronoun (RP). In some positions only gaps are allowed, and in other positions only RPs. There are also some positions where both gaps and RPs are alternatively allowed. Illustrating the striking similarities between Persian gaps and RPs, I will provide an HPSG unified approach to take care of the dependency between the licensing structure and the gap/RP with a single mechanism, using only the SLASH feature. Similar to Pollard and Sag s (1994) approach to the bottom of the dependency, I will assume a special sign at the bottom. However, my sign may have a nonempty PHON value. I will introduce a feature called GAPTYPE which is a NONLOCAL feature whose value can be either trace or rp. I will introduce two constraints to capture the pattern of distribution of RPs and traces. At the top of the dependency, I will bind the nonempty SLASH at the complementizer point. I will propose a lexical entry for the complementizer ke that will account for the binding of SLASH by the feature BIND, which has a nonempty set as value.
The purpose of this paper is to describe the TüBa-D/Z treebank of written German and to compare it to the independently developed TIGER treebank (Brants et al., 2002). Both treebanks, TIGER and TüBa-D/Z, use an annotation framework that is based on phrase structure grammar and that is enhanced by a level of predicate-argument structure. The comparison between the annotation schemes of the two treebanks focuses on the different treatments of free word order and discontinuous constituents in German as well as on differences in phrase-internal annotation.
In the wake of Kayne's Antisymmetry Hypothesis and Linear Correspondence Axiom (LCA), there has been much fruitful research attempting to adjust syntactic analyses to those permitted by Kayne's restrictive system. In doing so, analyses which at first seem counter-intuitive may tum out to provide solutions to old problems. Two cases in point are the analysis of Malagasy involving extensive Remnant Movement [henceforth RM1 described in Rackowski & Travis (2000), Pearson (2001), and elsewhere; on the one hand, and the analysis of Hungarian and Dutch verbal clusters in Koopman & Szabolcsi (2000) [henceforth R&T, Pearson, and K&Sz].
The original motivation (in part) for examining L&Sz and subsequently R&T was that it is the extensive use of iterated RM which increases the computational complexity of languages generatable in Stabler's "Strict Minimalist Grammar" formalism over that of context-free grammars. It has also been noted that allowing extraction from complex specifiers created by Merge (as opposed to Move) increases the level of complexity even further (lens Michaelis, p.e.). Both R&T and K&Sz make extensive use of RM; R&T allow extraction from complex specifiers, while K&Sz do not. Although the specifiers in both cases are created by Move, not Merge, we nevertheless feel that there is enough intrinsic linguistic interest in trying to limit extraction possibilities to pursue the comparison of these two systems with regard to this point.
This paper focuses on aspects of the licensing of adverbial noun phrases (AdvNPs) in the HPSG grammar framework. In the first part, empirical issues will be discussed. A number of AdvNPs will be examined with respect to various linguistic phenomena in order to find out to what extent AdvNPs share syntactic and semantic properties with non-adverbial NPs.Based on empirical generalizations, a lexical constraint for licensing both AdvNPs and non-adverbial NPs will be provided. Further on, problems of structural licensing of phrases containing AdvNPs that arise within the standard HPSG framework of Pollard and Sag (1994) will be pointed out, and a possible solution will be proposed. The objective is to provide a constraint-based treatment of NPs which describes non-redundantly both their adverbial and non-adverbial usages. The analysis proposed in this paper applies lexical and phrasal implicational constraints and does not require any radical modifications or extensions of the standard HPSG geometry of Pollard and Sag (1994).
Transforming constituent-based annotation into dependency-based annotation has been shown to work for different treebanks and annotation schemes (e.g. Lin (1995) has transformed the Penn treebank, and Kübler and Telljohann (2002) the Tübinger Baumbank des Deutschen (TüBa-D/Z)). These ventures are usually triggered by the conflict between theory-neutral annotation, that targets most needs of a wider audience, and theory-specific annotation, that provides more fine-grained information for a smaller audience. As a compromise, it has been pointed out that treebanks can be designed to support more than one theory from the start (Nivre, 2003). We argue that information can also be added to an existing annotation scheme so that it supports additional theory-specific annotations. We also argue that such a transformation is useful for improving and extending the original annotation scheme with respect to both ambiguous annotation and annotation errors. We show this by analysing problems that arise when generating dependency information from the constituent-based TüBa-D/Z.
Hybrid robust deep and shallow semantic processing for creativity support in document production
(2004)
The research performed in the DeepThought project (http://www.project-deepthought.net) aims at demonstrating the potential of deep linguistic processing if added to existing shallow methods that ensure robustness. Classical information retrieval is extended by high precision concept indexing and relation detection. We use this approach to demonstrate the feasibility of three ambitious applications, one of which is a tool for creativity support in document production and collective brainstorming. This application is described in detail in this paper. Common to all three applications, and the basis for their development is a platform for integrated linguistic processing. This platform is based on a generic software architecture that combines multiple NLP components and on robust minimal recursive semantics (RMRS) as a uniform representation language.
To model the pied piping in interrogative and exclamative clauses Ginzburg & Sag (2000) proposes a nonlocal head-driven treatment, thus emphasizing the resemblances with extraction. This treatment has a number of drawbacks: it relies on poorly motivated lexical rules and nonbranching phrase structure rules, it makes false predictions about pied piping in PPs, and it presupposes an implausible structure for NPs with predeterminers. To solve these problems I propose an alternative in which pied piping is treated as a local functor-driven dependency. Technically, the WH feature is integrated in the CATEGORY objects, and the propagation of its values is modeled by constraints which are independently needed for the treatment of other phenomena.
Weak function word shift
(2004)
The fact that object shift only affects weak pronouns in mainland Scandinavian is seen as an instance of a more general observation that can be made in all Germanic languages: weak function words tend to avoid the edges of larger prosodic domains. This generalisation has been formulated within Optimality Theory in terms of alignment constraints on prosodic structure by Selkirk (1996) in explaining thedistribution of prosodically strong and weak forms of English functionwords, especially modal verbs, prepositions and pronouns. But a purely phonological account fails to integrate the syntactic licensing conditions for object shift in an appropriate way. The standard semantico-syntactic accounts of object shift, onthe other hand, fail to explain why it is only weak pronouns that undergo object shift. This paper develops an Optimality theoretic model of the syntax-phonology interface which is based on the interaction of syntactic and prosodic factors. The account can successfully be applied to further related phenomena in English and German.