Abstract. In this paper three problems for a connectionist account of language are considered: 1. What is the nature of linguistic representations? 2. How can complex structural relationships such as constituent structure be represented? 3. How can the apparently open-ended nature of language be accommodated by a fixed-resource system? Using a prediction task, a simple recurrent network (SRN) is trained on multiclausal sentences which contain multiply-embedded relative clauses. Principal component analysis of the hidden unit activation patterns reveals that the network solves the task by developing complex distributed representations which encode the relevant grammatical relations and hierarchical constituent structure. Differences between the SRN state representations and the more traditional pushdown store are discussed in the final section.

This thesis presents accounts of a range of linguistic phenomena in an extended categorial framework, and develops proposals for processing grammars set within this framework. Linguistic phenomena whose treatment we address include word order, grammatical relations and obliqueness, extraction and island constraints, and binding. The work is set within a flexible categorial framework which is a version of the Lambek calculus (Lambek, 1958) extended by the inclusion of additional type-forming operators whose logical behaviour allows for the characterization of some aspect of linguistic phenomena. We begin with the treatment of extraction phenomena and island constraints. An account is developed in which there are many interrelated notions of boundary, and where the sensitivity of any syntactic process to a particular class of boundaries can be addressed within the grammar. We next present a new categorial treatment of word order which factors apart the specification of the order of a h...

the syntactically impossible antecedents. This latter for handling bound anaphora, disjoint reference, and pronominal reference. The algorithm maps over every node in a parse tree in a left-to-right, depth first manner. Forward and backwards coreference, and disjoint reference are assigned during this tree walk. A semantic interpretation procedure is used to deal with multiple antecedents.

Intonational prominence, or accent, is a fundamental prosodic feature that is said to contribute to discourse meaning. This thesis outlines a new, computational theory of the discourse interpretation of prominence, from a FUNCTIONAL PROSODY perspective. Functional prosody makes the following two important assumptions: first, there is an aspect of prominence interpretation that centrally concerns discourse processes, namely the discourse focusing nature of prominence; and second, the role of prominence in language processing in general, and discourse processing in particular, is not essentially separate from the processing of other grammatical, nonprosodic information. This thesis develops a computational theory of prominence interpretation by explaining how prominence serves as an inference cue in discourse processing. Prominence signals changes in the attentional status of entities in a discourse model, while nonprominence signals that the realized entities are already in discourse fo...

Binding theory is the component of grammar that regulates the interpretation of noun phrases. Certain syntactic configurations involving picture noun phrases (PNPs) are problematic for the standard formulation of binding theory, which has prompted competing proposals for revisions of the theory. Some authors have proposed an account based on structural constraints, while others have argued that anaphors in PNPs are exempt from binding theory, but subject to pragmatic restrictions. In this paper, we present an experimental study that aims to resolve this dispute. The results show that structural factors govern the binding possibilities in PNPs, while pragmatic factors play only a limited role. However, the structural factors identified differ from the ones standardly assumed.

This paper develops within HPSG a model of grammar with two syntactic levels, valence lists and argument structure, at which sentences may have different representations: syntactically ergative and Western Austronesian languages are distinctive by allowing different prominence orderings between the valence lists and argument structure, while forms like passives and causatives have nested argument structure lists. While binding theory and related phenomena have traditionally been described in terms of surface grammatical relations or configurations, we demonstrate that binding theory is actually correctly described in terms of argument structure configurations. Such an approach generalizes nicely over accusative and ergative constructions, correctly predicts binding patterns with causative and passive verbs, and supports the lexicality-preserving account of passives and causatives a...

I consider the role of cognitive modeling in cognitive science. Modeling, and the computers that enable it, are central to the field, but the role of modeling is often misunderstood. Models are not intended to capture fully the processes they attempt to elucidate. Rather, they are explorations of ideas about the nature of cognitive processes. In these explorations, simplification is essential—through simplification, the implications of the central ideas become more transparent. This is not to say that simplification has no downsides; it does, and these are discussed. I then consider several contemporary frameworks for cognitive modeling, stressing the idea that each framework is useful in its own particular ways. Increases in computer power (by a factor of about 4 million) since 1958 have enabled new modeling paradigms to emerge, but these also depend on new ways of thinking. Will new paradigms emerge again with the next 1,000-fold increase?

Abstract Much earlier work claims that appositives and expressives are invariably speaker-oriented. These claims have recently been challenged, most extensively by Amaral, Roberts & Smith 2007. We are convinced by this new evidence. The questions we address are (i) how widespread are non-speaker-oriented readings of appositives and expressives, and (ii) what are the underlying linguistic factors that make such readings available? We present two experiments and novel corpus work that bear directly on this issue. We find that non-speaker-oriented readings, while rare in actual language use, are systematic. We also find that non-speaker-oriented readings occur even outside of attitude predications, which leads us to favor an account based in pragmatically-mediated perspective shifting over one that relies on semantic binding by attitude predicates.

268 ABSTRACT – This paper investigates the distribution of pronouns and

Ever since Ross (1967), one of the topics that has dominated the literature on wh (long-distance dependency) constructions is that of “islands, ” regions of sentences which are opaque to wh dependencies. (1) a. *This book, I know a student who read. [Complex NP Constraint] b. *What did you eat bagels and? [Coordinate Structure Constraint] c. *It was the Mets that I traveled to New York before I watched. [Adjunct Condition] d. *Star Trek, to watch is important. [Sentential Subject Condition] While Ross simply listed types of structures which display this opacity, subsequent literature has attempted to discover unifying principles to explain islandhood. Despite these efforts, none has been entirely successful. The purpose of this paper is to discuss the source of island constraints, and to propose an LFG account of islands which differs somewhat from the standard account in Kaplan and Zaenen (1989). The literature on islands can be basically split into two groups: those that provide a syntactic explanation and those that provide a pragmatic explanation. For