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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.
In this paper, we claim that the filler-gap linkage in Korean UDCs needs to be handled at the level of syntax and that unbounded dependencies represented by traces, resumptive pronouns, and resumptive reflexives in Korean can be simply captured - without posing any extra mechanisms - in the traditional HPSG analysis of UDCs following Pollard and Sag (1994). It is because in HPSG traces are not all required to have the same feature, unlike in other movement-based approaches including the minimalist program and GB theory. In addition, we argue that the three kinds of Korean UDC elements appearing in gap positions do not form separate categories from their corresponding forms appearing in non-UDCs based on the same semantic and pragmatic properties such as logophoricity and contrastiveness. We also investigate some controversial issues of island constraints and strong crossover with respect to filler-gap linkage in Korean UDCs.
This paper presents an analysis of constructions involving the l-form of the verb in Polish, including primarily the past tense, the conditional mood, and the future tense. Previous approaches have attempted to treat these uniformly as auxiliary verb constructions. We argue against a unified treatment, however, in light of synchronic and diachronic evidence that indicates that only the future tense and the conditional still involve auxiliaries in modern Polish. We show that the past tense is now a simple tense, although the l-forms appear in combination with agreement affixes that can appear in different places in the sentence. We provide an account of the common linearization properties of the past tense markings and the conditional auxiliary. We present a detailed HPSG analysis of the past tense construction that relies on the introduction of two interacting agreement features. We then discuss the consequences of our proposals for the analysis of the conditional and future auxiliary constructions, and finally, we offer a treatment of constructions involving inflected complementizers in Polish.
We propose a formulation of 'relative tense theory' as applied to the complex tenses in Japanese using an HPSG grammar with its semantics represented based on Discourse Representation Theory. Specifically, a mechanism of tense interpretation which consecutively combines Discourse Representation Structures in parallel with an otherwise motivated hierarchical syntactic structure is presented. The framework provides a concise and comprehensive account of the Japanese simplex and complex tenses; it is made possible by the use of a hypothetical temporal point temporal axis, which relates the location time of the relevant clause to an outer temporal point, and a modal semantic operator woll.
This paper discusses how the English Resource Grammar (ERG) captures the optionality of certain complements of verbs based on a single lexical entry coupled with an ontology of markings distinguishing optional from obligatory as well as unrealized from realized elements. Subject-head and head-complement structures are modified accordingly, but due to the lack of a possibility to express and use relational goals in grammars implemented in the LKB system, the ERG encoding falls short of the goal of treating optional complements in a general way. Instead, it requires two new types of ˋauxiliary' phrases which are otherwise unmotivated. We show that the problem can be overcome by using a recursive relation selecting a member from a list. The use of a lean implementation platform not supporting such relational goals, such as the LKB, thus results in a loss of generality of the grammars that can be expressed, which undermines the closeness of the implemented grammar to current linguistic analyses as one of the hallmarks of HPSG-based grammar implementation. The case study presented in this paper thus supports the position argued in Götz and Meurers (1997) that a system for the implementation of HPSG-based grammars should include both universal implicational principles as well as definite clauses over feature terms.
In this paper, I first make an observation that there is a certain parallelism in the scope interpretation possibilities of adverbs and quantifiers with respect to different types complex predicates in Japanese, drawing on a comparison of the light verb construction and the causative construction. I will then argue that previous approaches to complex predicates in Japanese in the lexicalist tradition (Matsumoto 1996; Manning et al. 1999) fail to capture this generalization successfully. Finally, building on a novel approach to syntax/semantics interface in HPSG by Cipollone (2001), I develop an analysis of the semantic structure of complex predicates that accounts for the empirical observation straightforwardly.
We argue here for a lexicalist analysis of the Korean copula (following Kim, Sells and Wescoat (2004)), on the basis of different properties of sequences of noun-plus-copula, which shows word-like behavior, in contrast to noun and negative copula, which are independent syntactic units. The interactions of these items with various copy constructions brings out their clear differences. The analysis is formalized in HPSG using Lexical Sharing, from Wescoat (2002).
According to the Projection Principle (Chomsky 1981), expletives have no semantic content and thus cannot occur in theta-marked positions. However, there are many examples where expletive it appears as a direct object, in violation of the Projection Principle. The various attempts that have been made to account for such cases (e.g. the case-based analysis of Authier (1991), the predication analysis of Rothstein (1995), and the Specifier analysis of Stroik (1991, 1996)) all posit movement of the expletive from a non-theta marked position to direct object position. However, these analyses have so far been unsuccessful in capturing several important contrasts, e.g. variable optionality of the expletive it. This paper argues that such contrasts (and the complex behavior of expletive it more generally) follow straightforwardly from a lexicalist, constraint-based analysis in which lexical information and independently motivated constraints interact in subtle ways.
Focusing on the examples of multiple degree modification, this paper argues that the class of degree expressions in English is syntactically and semantically diverse, subdivided both according to the semantic effects of its members and according to the extent to which they permit, and participate in, multiple layers of modification. We argue that these two factors are linked, and result in (at least) a three-way distinction between ˋtrue degree morphemes', which map gradable adjectives to properties of individuals and combine with their arguments in a Head-Specifier structure; ˋintensifiers', which are syntactic and semantic modifiers of properties constructed out of gradable adjectives; and ˋscale modifiers', which are also syntactic and semantic modifiers, but which combine with ˋbare' gradable adjectives (relations between individuals and degrees) rather than properties formed out of gradable adjectives.