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Multiple nominative constructions (MNCs) in Korean have two main sub- types: possessive and adjunct types. This paper shows that a grammar allow- ing the interaction of declarative constraints on types of signs - in particular, having constructions (phrases and clauses) - can provide a robust and efficient way of encoding generalizations for two different MNCs. The feasibility of the grammar developed here has been checked with its implementation into the LKB (Linguistic Knowledge Building) system
The paper examines two verb sequencing constructions in Ga: the Serial Verb Construction (SVC) and the Extended Verb Complex (EVC). The former is an instance of a commonly recognized construction, the latter is typically found in the Volta Basin area of West Africa. EVCs are sequences of verbs functioning as single verb units relative to the syntax, but with an internal structure much like syntactic complementation. Both constructions show agreement of aspect and mood marking throughout the sequence, but with differences in exponence: in an SVC all Vs expose such marking, in an EVC only a limited (down to one) number of verbs, depending on the inflectional category. The paper presents the basic facts, based on works by Dakubu (2002, 2004, to appear), and gives an HPSG account of their morphology, syntax and semantics. The analysis is sustained by a grammar of the phenomena implemented with the 'Linguistic Knowledge Builder' (LKB), an engineering platform for natural language processing.
Licenser rules have originally been introduced in Müller (1999) as a part of a grammar based on discontinuous constituents. We propose licenser rules as a means to avoid underspecified empty elements in grammars with continuous constituents. We applied them to a verb movement analysis of the German main clause with right sentence bracket and to complement extraposition. To reduce the number of unnecessary hypotheses, we extended the licenser rule concept with a licenser binding technique. We compared the licenser rule approach to an approach based on underspecified traces with respect to processing performance. In our experiment, the use of licenser rules reduced the parse time by a factor of 13.5.
This paper examines the syntactic behavior of the Mauritian copula in predicative and extracted sentences. As it is the case in many languages, the Mauritian copula ete is absent in certain constructions: It only appears in extraction contexts. Our aim is to show that the postulation of a null copula, which has been proposed in various analyses, is inadequate for the Mauritian data. The phenomenon, as it is argued, rather lends itself to a strictly construction-based analysis within the framework of HPSG and is based on the distribution of weak pronouns and TAM markers.
In this paper I suggest an interface level of semantic representations, that on the one hand corresponds to morpho-syntactic entities such as phrase structure rules, function words and inflections, and that on the other hand can be mapped to lexical semantic representations that one ultimately needs in order to give good predictions about argument frames of lexical items. This interface level consists of basic constructions that can be decomposed into five sub-constructions (arg1-role, arg2-role ... arg5-role). I argue in favour of phrasal constructions in order to account for altering argument frames and maybe also coercion without having to use lexical rules or multiple lexical entries.
Townsend and Bever (2001) and Ferreira (2003) argue that simple templates representing the most commonly used orderings of arguments within a clause (e.g., NP-V-NP = Agent-Action-Patient) are used early in sentence comprehension to derive a preliminary interpretation before a full parse is completed. Sentences which match these templates (e.g., active sentences, subject clefts) are understood quickly and accurately, while sentences which deviate from the templates (e.g. passive sentences, object clefts) require additional processing to arrive at the correct interpretation. The present study extends the idea of canonical templates to the domain of noun phrases. I report on two experiments showing that possessive free relative clauses in English, which involve a non-canonical ordering of the head noun, are more difficult to understand than canonically headed noun phrases. I propose two reasons for this finding: (1) possessive free relatives deviate from the canonical template for interpreting noun phrases; and (2) the formal cues for interpreting possessive free relatives are relatively subtle. More generally I suggest that canonical templates help constrain mismatch in language by making certain kinds of mismatches costly for language users. Finally, I argue that evidence for canonical templates fits best within a parallel-architecture, constructionist theory of grammar.
In this paper, we report on an experiment showing how the introduction of prosodic information from detailed syntactic structures into synthetic speech leads to better disambiguation of structurally ambiguous sentences. Using modifier attachment (MA) ambiguities and subject/object fronting (OF) in German as test cases, we show that prosody which is automatically generated from deep syntactic information provided by an HPSG generator can lead to considerable disambiguation effects, and can even override a strong semantics-driven bias. The architecture used in the experiment, consisting of the LKB generator running a large-scale grammar for German, a syntax-prosody interface module, and the speech synthesis system MARY is shown to be a valuable platform for testing hypotheses in intonation studies.
This paper provides a background on the role of world knowledge in disambiguating modals and proposes treating the disambiguation of counterfactuals as a slightly more tractable sub-case of the general problem. Using a model theoretic possible worlds approach, counterfactuals are disambiguated with respect to a world of evaluation resembling classic Formal Semantic treatments (e.g., Kratzer 1977, 1981, 1989; Lewis 1973; Veltman 2005). The world, which provides a context of evaluation, is located through the interaction of the antecedent and consequent propositions with world knowledge axioms. This approach to modal disambiguation provides a connection between a grammar and the type of inferences typically handled in Knowledge Representation Systems (e.g., Hobbs et al. 1990) in a limited domain. The model theoretic semantics are linked with typed feature structures in an HPSG syntax (Pollard and Sag 1994). This grammar is implemented in TRALE, Penn's (2004) Prolog-based framework for typed feature structure grammar development. The compositional semantics in TRALE is specified in Penn and Richters' (2004, 2005) Constraint Language for Lexical Resource Semantics (CLLRS). This semantic component provides a semantic parse in which heads and arguments are combined systematically and the scope of negation or quantification can be accurately reflected. In the case of counterfactuals, the CLLRS semantic parse is passed to a model-theoretic interpreter. The mapping between the CLLRS semantic parse and the well-formed formulas of the model is defined by checking the parseability of the formula in the compositional semantics. Sets of possible worlds interact with constraints on world knowledge and constraints defining counterfactual validity. The truth value for a counterfactual is returned to the grammar relative to a context of evaluation. The results of counterfactual evaluation are returned in a form consistent with the grammar's internal compositional semantics. By the method described above, the interpreter provides a grammar-external component in which inferences involving world knowledge have the potential to be more efficiently evaluated. Through the development of model-checking techniques, for instance, it could be shown whether or not well-formed formulas and constraints hold in larger models and move towards capturing more fine-grained modal inferences in a larger domain.
This paper discusses a non-constituent coordination construction that occurs in Russian in which constituents with different syntactic functions and different thematic roles are conjoined. These conjuncts are co-arguments of the same head and are subject to a number of idiosyncrasies.
We consider several alternative analysis of the phenomena, and conclude that these are unable to account for the full range of the facts. Thus, even though these conjuncts do not form a semantic unit, there is evidence that they do form a kind of coordination structure. The phenomena are challenging for any theory of grammar, but the syntax-semantics account that we provide involves minimal changes to standard HPSG architecture.
Three distinctions seem relevant for the scope properties of adverbs: their function (adjuncts or complements), their prosody (incidental or integrated) and their lexical semantics (parenthetical or non parenthetical). We propose an analysis in which the scope of French adverbs is aligned with their syntactic properties, relying on a view of adjuncts as loci for quantification, a linearization approach to the word order, and an explicit modelling of dialogue.
Pseudocoordination in Danish
(2007)
In this paper we propose an analysis of Danish pseudocoordination constructions. The analysis is based on a hybrid phrase hierarchy where phrase types are assumed to be subtypes of types that cut across the traditional division of phrasal types, allowing the phrase type of pseudocoordinations to be a subtype of both coordinate phrases and headed phrases, and consequently inherit properties from both types. The analysis is linearization-based. We further develop a set of constraints on the phrasal types in the hierarchy.
The hybrid phrase hierarchy and the set of constraints on the various types in the hierarchy explain why, on the one hand, pseudocoordinations contain conjunctions and the conjuncts must have the same form and tense, and on the other, have a fixed order, allow extraction out of the second conjunct, do not allow overt subjects in the second conjunct and allow transitive verbs to appear in there-constructions.
This paper proposes a projectionist account of the unexpressed object alternations in HPSG. The approach is based on the two-level mapping mechanism, developed in Manning and Sag (1998) and Sag et al (2003). The proposed analysis keeps identical argument structure values in the lexeme description of both valence alternatives, while different surface valence values are related by a lexical rule.
The HPSG model is applied cross-linguistically to English and Bulgarian. Some Bulgarian-specific traits, such as the limited alternation range and the grammaticalized aspect, related to the formal characteristics of the unexpressed object alternations, are discussed and interpreted within HPSG.
The treatment of French causatives and pronominal affixes outlined in Miller and Sag (1997) and Abeillé et al. (1998) is notable for its comprehensive coverage and analytic detail, but it relies on a number of ad hoc features and types that have little empirical justification. We sketch a new treatment of the same data set, which eliminates multiple lexical entries for the causative, as well as a number of other undesirable analytic devices. Our account builds on a long-standing observation that seeming irregularities in the system of case assignment to the causee of faire are not in fact exceptional, but determined by the general case assignment behavior of transitive verbs. This generalization, first incorporated into an HPSG analysis by Bratt (1990), was abandoned in subsequent HPSG work that sought to expand the coverage of French beyond that of Bratt's analysis. Our goal here is to show that broad coverage need not come at the expense of linguistically significant generalizations.
This paper presents an overview of a proposed linearisation grammar, which relies solely upon information residing in lexical heads to constrain word order. Word order information, which encompasses discontinuity as well as linear precedence conditions, is explicitly encoded as part of the feature structure of lexical heads, thus dispensing with a separate LP specification or 'phenogrammatical' layer standardly posited for linearisation. Instead, such lexicon-originated word order constraints are enforced in projections, propagated upwards and accumulated in the compound PHON feature, which represents phonological yields in an underspecified manner. Though limited somewhat in generative capacity, this approach covers the key phenomena that motivated linearisation grammars and offers a simpler alternative to the standard DOM-oriented theory.
In this contribution we will argue that negative polarity is a collocational phenomenon that does not follow from other properties of the respective lexical elements. With German data as evidence, we will follow a proposal by van der Wouden and treat Negative Polarity Items (NPIs) as collocates which must be licensed by abstract semantic properties of their contexts. Using a collocation module for HPSG, which has been independently motivated for bound words and idioms, we will show how to restrict the occurrence of NPIs to legitimate environments, starting from the negativity hierarchy of licensing environments by Zwarts. Besides a more fine-grained semantic licenser hierarchy, we will establish syntactic licensing domains and general collocational restrictions of NPIs.
We will provide an analysis of negative concord in sentential negation in three languages, French, Polish and German. The focus of the paper is (1) the typological variation with respect to the realization of negative concord in the three languages under investigation and (2) the treatment of lexical exceptions within the different typological classes. We will propose a unified theory of negative concord which identifies a common core system and adds language-specific constraints which can handle typological variation between languages and lexical exceptions within a given language.
This paper attempts to decompose the Motion event into such elements as Figure, Path, Vector, and Ground based upon Talmy's framework, which makes it possible to formally analyze and compare the lexical semantics of the deictic motion verbs within and across languages. It is shown that the difference in interpretations of the Path is attributable to the lexical specifications of both deictic motion verbs and locative phrases. It is argued that deictic motion verbs can be lexically specified for the entailment of arrival only if they express the Path eventually directed to the deictic center. A formal analysis is given based upon the HPSG framework in order to identify the elements of a Motion event contributed by each element of a verb phrase, and to determine the compositional fashion in which they are combined to give the interpretation of the verb phrase as a whole.
The Japanese language is one of the languages where universal and existential quantification are expressed using wh-words with the conjunctive and disjunctive particles, respectively. In this paper, inspired by the syntactic and semantic parallelism found in Japanese between quantification, coordination, and question, we seek to analyze these constructions in a unified fashion. We investigate various phenomena of these constructions and show how these three constructions can be uniformly analyzed as cases where abstracted arguments are questioned or quantified for verbs. We then present an HPSG formalization of the analysis.
It has often been argued that Non-Constituent Coordinations involve ellipsis. Focussing in this paper on so-called 'Argument Cluster Coordination', we provide empirical evidence drawn from French against such elliptical analyses. We then sketch an alternative approach within HPSG, allowing non-standard constituents to be conjoined in the scope of some shared predicate. While such non-standard constituents are generally obtained by relaxing phrase structure, we propose analyzing them as non-headed constructions, deriving their unusual properties from the interplay of two different sets of constraints: those imposed by coordination and those imposed by predicates that select such clusters as arguments.
Situations in which conflicting constraints clash can potentially provide linguists with insights into the architecture of grammar. This paper deals with such a case. When predicative modifiers of morphologically rich languages head relative clauses, they are involved in two, sometimes conflicting, agreement relationships. Different languages adopt different strategies in order to resolve situations of conflicting constraints. This paper focuses on Standard Arabic and the hybrid agreement strategy which it employs. It argues that the HPSG theory of agreement, which distinguishes between morphosyntactic and semantic agreement, constitutes an appropriate framework for accounting for the phenomenon. In addition, it shows that contrary to claims made by Doron and Reintges (2005), a non-derivational framework such as HPSG is adequate for accounting for this non-trivial agreement pattern. Moreover, with a constructional approach, whereby constraints can target syntactic structures above the lexical level, better empirical coverage is achieved.
The purpose of this paper is to consider the proper treatment of short- and long-fronted adjuncts within HPSG. In the earlier HPSG analyses, a rigid link between linear order and constituent structure determines the linear position of such adjuncts in the sentence-initial position. This paper will argue that there is a body of data which suggests that adjunct fronting does not work as these approaches predict. I will then show that linearisation-based HPSG can provide a fairly straightforward account of the facts.
American Sign Language (ASL) has a group of verbs showing agreement with the subject or/and object argument. There has not been analysis on especially number agreement. This paper analyzes person and number agreement within the HPSG framework. I discuss person and number hierarchy in ASL. The argument of agreement verbs can be omitted as in languages like Italian. The constraints on the type agreement-verb have the information on argument optionality.
Russian shows the mixed agreement with the polite pronoun vy and pluralia tantum nouns, both of which have plural number in form but either singular or plural number in meaning. Two different forms of adjectives – short form and long form – agree in different number with those number mismatch nominals.
I adopted the idea of Siegel (1976) etc. that when a long-form adjective appears in the predicate position, there is always a null head that it modifies, with the HPSG's agreement theory of Wechsler & Zlatic (2003). I propose that all predicates – verbs, SF and LF adjectives – except predicate nominals show CONCORD agreement. LF adjectives show CONC agreement with the null anaphor 'one'. The different number values of LF adjectives results from index agreement between the null anaphor and the subject of the sentence.
We study the formal and pragmatic properties of the 'reinforced negation construction' in Italian, which, unlike the regular negative sentence, contains both non and an n-word in preverbal position. On the one hand, this construction relies on a more general construction (positive or negative), which is pragmatically associated with reprise assertion, on the other hand, it uses non without the usual constraints attached to it. We propose that this unfaithful recycling is a pattern for creating a form dedicated to metalinguistic negation. Our analysis integrates both negative types of negative forms with their formal and pragmatic properties.
Since Pollard and Sag (1994) it has been assumed that raising involves full structure sharing, whereas a control verb merely shares the content of one of the lower verb's arguments. This has been considered a property of the phenomena, despite the fact that Pollard and Sag (1994) present this syntactic difference as a hypothesis confirmed for Icelandic only. In this paper we discuss the difference between raising and control from the perspective of Dutch and German passives. It has already been shown by Van Noord and Kordoni (2005) that the secondary object passives in these languages are raising structures, in which the case of the raised argument changes. In this paper we provide additional evidence for the raising analysis, and we propose a new analysis, which allows for a uniform account of Dutch and German passives as raising structures. Przepiorkowski and Rosen (2004) show that control may exhibit case transmission; the data presented in this paper shows that raising may not. Therefore, we claim that the distinction between raising and control is found in theta-role assignment. Syntactically they tend to behave differently, but they may also behave in the exact same way.
In Modern Greek there is a rich aspectual system, which involves both morphologically expressed grammatical aspect and eventuality types, carried primarily by the meaning of the verbal predicate. Particular emphasis is paid to the interaction between grammatical aspect and eventuality types, since it is due to this interaction that the verbal predicate acquires distinct meanings. In order to explain potential changes in the meaning of the eventualities caused by the interaction with grammatical aspect, I propose a formal analysis within HPSG, using Minimal Recursion Semantics (MRS) for the semantic representations. Following the MRS architecture, I introduce a number of relations, which represent both grammatical aspect and eventuality types. The close interaction between grammatical aspect and eventuality types triggers special meanings which traditionally can be explained by inserting contextual information into the representations. In this paper, I argue against such an analysis, providing an alternative which is based on the introduction of subeventual templates formulated by Michaelis (2003) and Pustejovsky (1995). In this context, grammatical aspect combines with eventuality types and selects eventualities or subeventualities appropriate to its selection restrictions, using information that is already there in the denotation of the eventualities.
Floating affixes in Polish
(2006)
The morphosyntactic status of Polish past tense agreement markers has been a matter of considerable debate in recent years (Spencer 1991, Borsley & Rivero 1994, Borsley 1999, Bański 2000, Kupść 2000, Kupść & Tseng 2005). Past tense agreement is expressed by a set of bound forms that either attach to the past participle, or else float off to a host further to the left. Despite this relative freedom of attachment, it is often noted in the literature, e.g., Borsley 1999, Kupść & Tseng 2005, that the combination of verbal host and agreement marker forms a word-like unit.
In this paper I will argue that these agreement markers are best analysed as affixes uniformly introduced on the verb whose inflectional features they realise. Building on the linearisation-based theory of morphology-syntax interaction proposed in Crysmann 2003, syntactic mobility of morphologically introduced material will be captured by mapping phonological contributions to multiple lexically introduced domain objects. It will be shown that this is sufficient to capture the relevant data, and connect the placement of floating affixes to the general treatment of Polish word order Kupść 2000.
Several analysis of Coordination of Unlikes have been proposed within the HPSG framework. In some of these approaches the possible combinations of 'unlike categories' are encoded in the grammar, while other accounts resort to an independently motivated ellipsis analysis. In this paper we provide further arguments in favor of the latter. However, some problematic cases of Coordination of Unlikes in certain S-adjoining constructions are left unaccounted for. We propose a general analysis of these S-adjoining constructions, and in doing so, the problematic coordination cases are predicted without the need for further assumptions.
The "flexibility" of gender in Tigrinya is uncovered by (i) setting a value for gender for each noun at the lexical level (i.e. bare controllers) and (ii) analysing gender shifts as signals for evaluations (i.e. evaluated controllers). The analysis is formalized as lexical rules which change the value of gend and add an elementary predication in the rels list.
In this paper, we present an analysis of noun phrases with elided nouns that dispenses with the positing of empty categories and preserves the NP structure assumed for NPs with overt nouns, modulo the absence of the head noun. On a par with existing traceless analyses of long distance dependencies, this is proposed as a further step towards a more lean theory of grammar, without phonetically null items.
Languages often require negation to be realized in a prominent position. A well known example is Italian, which seems to require a pre-verbal realization of negation. Some other languages require negation to be in a prominent position but do not require it to be pre-verbal. An example is Swedish. Working within Lexical Functional Grammar (LFG), Sells (2000) proposes that Swedish requires a negative element which is not inside VP and that Italian has the same constraint. Similar facts are found in the VSO language Welsh. However, Sellss approach cannot be applied to Welsh. Borsley and Jones (2005) develop a selectional approach to Welsh, in which certain verbs require a negative complement. This works well for Welsh but cannot be applied to Swedish or Italian. A similar approach to all three languages is possible within the linearization-based version of Head-driven Phrase Structure Grammar (HPSG) developed by Kathol (2000). It seems, then, that a linear approach is preferable to both a structural and a selectional approach.
Metrical phonology in HPSG
(2006)
This paper proposes a new approach to the prosody-syntax interface in HPSG. Previous approaches to prosody in HPSG (Klein, 2000; Haji-Abdolhosseini, 2003) represent prosodic information by constructing metrical constituent structure in the tradition of (Selkirk, 1980; Liberman and Prince, 1977). One drawback of this approach is that it does not allow for a direct representation of purely metrical constraints, which are relegated to an unformalized performance component. By contrast, so called 'grid only' approaches (Prince, 1983; Selkirk, 1984; Delais-Roussarie, 2000) use a single data structure, a metrical grid, to encode prosodic constraints resulting from syntax and constraints of a rhythmic nature.
We first review relevant data from French showing that prosodic constituency is much less constrained by syntactic structure than is predicted by existing approaches. In all but very short utterances, many different prosodic groupings are possible for a given sentence with a determinate information structure, and rhythmic factors determine a preference ordering on the possible groupings. We then present an HPSG implementation of the metrical grid, and propose minimal syntactic constraints on relative prominence, leaving room for noncategorical rythmic constraints to choose between alternatives. We finish by discussing the interaction of the metrical grid with the rest of the prosodic grammar.
Conventional wisdom holds that productive morphology is regular morphology. Drawing evidence from French, we argue that the description of many lexeme formation processes is simplified if we hold that a productive rule may give rise to inflectionally irregular lexemes. We argue that the notion of a stem space allows for a straightforward description of this phenomenon: each lexeme comes equipped with a vector of possibly distinct stems, which serve as bases for inflectional form construction. The stem space is structured by default relations which encode the regular pattern of inflection; (partial) irregularities occur when a lexeme specifies a stem space violating the default relations. Derived irregularity is then the effect of a productive lexeme formation rule which specifies an irregular stem space for its output.
Abstract: A functional typology of copular be in Russian allows us to systematically relate variants of predication with and without copula. The analysis sketched in this article does not need empty categories; neither does it have to stipulate categories, category changes or constituents that are not morphologically signalled. With regard to HPSG formalization, the presented approach independently motivates the use of features and mechanisms that are already available in this framework.
Comparative correlative (CC) constructions have received much attention in recent years. Major issues have been whether they involve special constructions and whether they have symmetric or asymmetric structures. Evidence from Romance suggests that they require special constructions and that they may be either symmetric or asymmetric. French has a single construction which is asymmetric for some speakers and symmetric for others. Spanish has two distinct constructions, one asymmetric and the other symmetric with quite different properties. The facts can be accommodated in a straightforward way within construction-based HPSG.
This paper discusses the NP-internal agreement strategies observed in an empirical (corpus based) study of Portuguese, and proposes an analysis which is formalized in the framework of Head-Driven Phrase Structure Grammar (HPSG). The empirical study suggests that what were previously thought to be rare or non-existent strategies occur with surprising frequency. Capturing these strategies poses problems for many standard approaches to agreement. The formalization shows how they can be captured with a relatively conservative extension of the existing HPSG theory of agreement.
This paper focuses on passive constructions in Dutch. Specifically, we focus on worden, as well as krijgen passives in Dutch, for which we propose a uniform, raising analysis in HPSG. We also show that such an analysis can be carried over to account for passives cross-linguistically. Specifically, we look at corresponding structures in German and show that there is no need for a dual raising and control analysis for the German "agentive" (werden) and the German "dative" (kriegen) passives, respectively, as has been proposed in Müller (2002) and Müller (2003).
In Pollard & Sag (1994) and in Ginzburg & Sag (2000) phrases are either headed or non-headed, and if they are headed, there is a relation of selection between the daughters: either the head daughter selects its non-head sister(s), as in the phrases of type 'head-complements', or the non-head daughter selects its head sister, as in the phrases of type 'head-adjunct'. In the non-headed phrases, by contrast, there is no selection; in a coordinate structure, for instance, there is no relation of selection, neither between the conjuncts nor between the conjunction and the conjuncts. The central claim of this paper is that there are also phrases which are headed but in which neither daughter selects the other. To model such phrases I propose a new type, called 'head-independent'. Its properties are spelled out and its range of application is illustrated with various examples, including asymmetric coordination and apposition.
This paper provides a treatment of Polish Plural Comitative Constructions in the paradigm of HPSG in the tradition of Pollard and Sag (1994). Plural Comitative Constructions (PCCs) have previously been treated in terms of coordination, complementation and adjunction. The objective of this paper is to show that PCCs are neither instances of typical coordinate structures nor of typical complement or adjunct structures. It thus appears difficult to properly describe them by means of the standard principles of syntax and semantics. The analysis proposed in this paper accounts for the syntactic and semantic properties of PCCs in Polish by assuming an adjunction-based syntactic structure for PCCs, and by treating the indexical information provided by PCCs not as subject to any inheritance or composition, but as a result of applying a set of principles on number, gender and person resolution that also hold for ordinary coordinate structures.
Persian free relatives
(2005)
Free relatives (FRs) in Persian are Unbounded Dependency Constructions, containing gaps or resumptive pronouns (RPs). In some positions only gaps are allowed, and in some other positions only RPs. The structure of Persian FRs is bipartite, containing two constituents: a phrasal part and a sentential. Persian FRs are sensitive to the matching effect and show distinct properties from noun phrases, ordinary relative clauses, and interrogative complements. This paper proposes a unified HPSG account which assumes that the phrasal part of a FR is the head and the filler at the same time. The propped approach is presented in two versions (with and without traces) and can take care of the dependency between the gap or the RP and the licencing constituent with a truly single mechanism.
Algorithmic approaches to anaphor resolution are known to benefit substantially from syntactic disjoint reference filters. Typically, however, there is a considerable gap between the scope of the formal model of grammar employed for deriving referential evidence and its implementation. While accounting for many subtleties of language, such formal models at most partially address the algorithmic aspects of referential processing. This paper investigates the issue of implementing syntactic disjoint reference for robust anaphor resolution. An algorithmic account of binding condition verification will be developed that, on one hand, captures the theoretical subtleties, and, on the other hand, exhibits computational efficiency and fulfils the robustness requirements. Taking as input the potentially fragmentary parses of a robust state-of-the-art parser, the practical performance of this algorithm will be evaluated with respect to the task of anaphor resolution and shown to be nearly optimal.
We present a method for automatic RMRS semantics construction from dependency structures, following the semantic algebra of Copestake et al. (2001). We have applied this method to a subset of the TIGER Dependency Bank for German (Forst et al., 2004) to obtain a semantic treebank for (HPSG) parser evaluation. We describe the semantics construction mechanism and give evaluation figures from manual validation of the treebank. These indicate high precision of the automatic RMRS construction process.
This contribution is concerned with integrating the phenomenon of selectional restrictions in HPSG. Firstly, the question of treating selectional restrictions purely in the semantic module is tackled, as there are some contextual (or pragmatic) influences, which can repair the ill-formedness of violated selectional restrictions. Secondly, we present existing approaches to selectional restrictions within the framework and, lastly, make our own proposal which describes the subject as part of the semantics-pragmatics interface. In particular, we show how a semantic ontology can be integrated.
HPSG accounts of filler-gap dependencies hold considerable potential for explaining the cross-linguistic variation in unbounded dependency constructions (UDCs), specifically filler-gap dependencies. This potential comes from the SLASH specifications that are posited in all nodes along the extraction path (the path between filler and gap). However, as Hukari and Levine (1994, 1995, 1996) have observed, the HPSG analysis presented by Pollard and Sag (1994) fails to embody the generalizations required in order to explain key universal properties of UDCs, in particular the ˋregistration' of such dependencies in cases of subject- and adverb-extraction. This demonstration led Bouma et al. (2001) to propose a revised UDC analysis that avoids these difficulties by ˋthreading' the SLASH specfications through all heads within an extraction domain. However, Levine (2002) points out that this analysis encounters a new difficulty concerning the interaction of extraction and coordination. This paper revisits these issues, arguing that a small modification of the BMS analysis provides a solution to the important problem observed by Levine.
This paper investigates the binding of pronouns and reflexives in picture noun phrases, and focuses on data showing that reflexives and pronouns are not in complementary distribution in picture NPs with possessors. In particular, we discuss data showing that whereas reflexives can take either the possessor or the subject of the sentence as antecedent, pronouns are restricted to an antecedent other than the possessor phrase. We suggest that this asymmetry can be straightforwardly explained if we assume that (1) the possessor of a picture NP is not part of the head noun's argument structure and (2) Binding Theory is stated over dependents structure, the representation encompassing both a head's argument structure and other phrases dependent on it in various ways. If the possessor of a picture NP (PNP) is not part of the head's argument structure, it follows that reflexives in PNPs with possessors will be exempt from Binding Theory, which paves the way for an analysis of the reflexive data. Furthermore, we also show that if BT is regarded as defined over dependents structure, it follows that a pronoun in a picture NP with a possessor must be disjoint from that possessor phrase.
Remarks on binding theory
(2005)
We propose some reformulations of binding principle A that build on recent work by Pollard and Xue, and by Runner et al. We then turn to the thorny issue of the status of indices, in connection with the seemingly simpler Principle B. We conclude that the notion of index is fundamentally incoherent, and suggest some possible approaches to eliminating them as theoretical primitives. One possibility is to let logical variables take up the explanatory burden borne by indices, but this turns out to be fraught with difficulties. Another approach, which involves returning to the idea that referentially dependent expressions denote identity functions (as proposed, independently, by Pollard and Sag and by Jacobson) seerms to hold more promise.
It has been commonly assumed since Chomsky (1981) that the distribution of reflexive pronouns is subject to Binding Condition A. Reinhart and Reuland (1993) formulate Condition A in terms of the notion of syntactic predicate. The proposal I will develop in this paper is to factor out semantic and syntactic conditions on the occurrence of reflexive pronouns and to reduce them to independently motivated semantic and syntactic mechanisms. The semantic part is attributed to a theory of semantic composition recently developed by Chung and Ladusaw (2004), while the syntactic residue falls into the proper characterization of syntactic chains, as proposed by Reinhart and Reuland (1993) and Reuland (2001). To the extent that this approach is successful, Binding Condition A is rendered superfluous.
The process of turning a hand-written HPSG theory into a working computational grammar requires complex considerations. Two leading platforms are available for implementing HPSG grammars: The LKB and TRALE. These platforms are based on different approaches, distinct in their underlying logics and implementation details. This paper adopts the perspective of a computational linguist whose goal is to implement an HPSG theory. It focuses on ten different dimensions, relevant to HPSG grammar implementation, and examines, compares, and evaluates the different means which the two approaches provide for implementing them. The paper concludes that the approaches occupy opposite positions on two axes: faithfulness to the hand-written theory and computational accessibility. The choice between them depends largely on the grammar writer's preferences regarding those properties.
Order domains were originally proposed to deal with constituent order, but have recently been concerned with more than just linearization. This paper seeks to contribute to this discussion by considering the possibility of analysing word forms in terms of order domains. We focus on the distribution of the English relative and interrogative pronouns who and whom. It is shown that a small number of constraints can accommodate the seemingly complex body of data. In particular, a linearization-based constraint can provide a straightforward account for the quite puzzling distribution which who and whom show in one of the register types.