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Internals from elaboration
(2001)
Elaboration or Narration, as so-called discourse relations (or rhetorical relations), are modelled in Segmented Discourse Structure Theory (SDRT) as relations between discourse constituents (or constituents for short). These are either propositions that come into being by interpretation of sentences occurring in a text; the propositions then have the status of DRSes. Or, constituents are compounds of such DRSes, constructed from DRSes (or compounds of them) by discourse relations. Elaboration and Narration in that sense, rather than referring to text types, provide links between constituents that allow them to combine in ways that, for a recipient, a resulting text is coherent and has (some) elaborative or narrative properties.
The author presents MASSY, the MODULAR AUDIOVISUAL SPEECH SYNTHESIZER. The system combines two approaches of visual speech synthesis. Two control models are implemented: a (data based) di-viseme model and a (rule based) dominance model where both produce control commands in a parameterized articulation space. Analogously two visualization methods are implemented: an image based (video-realistic) face model and a 3D synthetic head. Both face models can be driven by both the data based and the rule based articulation model.
The high-level visual speech synthesis generates a sequence of control commands for the visible articulation. For every virtual articulator (articulation parameter) the 3D synthetic face model defines a set of displacement vectors for the vertices of the 3D objects of the head. The vertices of the 3D synthetic head then are moved by linear combinations of these displacement vectors to visualize articulation movements. For the image based video synthesis a single reference image is deformed to fit the facial properties derived from the control commands. Facial feature points and facial displacements have to be defined for the reference image. The algorithm can also use an image database with appropriately annotated facial properties. An example database was built automatically from video recordings. Both the 3D synthetic face and the image based face generate visual speech that is capable to increase the intelligibility of audible speech.
Other well known image based audiovisual speech synthesis systems like MIKETALK and VIDEO REWRITE concatenate pre-recorded single images or video sequences, respectively. Parametric talking heads like BALDI control a parametric face with a parametric articulation model. The presented system demonstrates the compatibility of parametric and data based visual speech synthesis approaches.
The goal of our current project is to build a system that can learn to imitate a version of a spoken utterance using an articulatory speech synthesiser. The approach is informed and inspired by knowledge of early infant speech development. Thus we expect our system to reproduce and exploit the utility of infant behaviours such as listening, vocal play, babbling and word imitation. We expect our system to develop a relationship between the sound-making capabilities of its vocal tract and the phonetic/phonological structure of imitated utterances. At the heart of our approach is the learning of an inverse model that relates acoustic and motor representations of speech. The acoustic to auditory mappings uses an auditory filter bank and a self-organizing phase of learning. The inverse model from auditory to vocal tract control parameters is estimated using a babbling phase, in which the vocal tract is essentially driven in a random manner, much like the babbling phase of speech acquisition in infants. The complete system can be used to imitate simple utterances through a direct mapping from sound to control parameters. Our initial results show that this procedure works well for sounds generated by its own voice. Further work is needed to build a phonological control level and achieve better performance with real speech.
This paper shows the early development of the first approximately 50 verbs found in the recorded speech production of one Croatian girl. The aim is to analyse and interpret the child's verb development in terms of the distinction of a pre- and a protomorphological phase before modularised morphology in language acquisition (Dressler & Karpf 1995). Furthermore, focus will be laid on the emergence of first verb paradigms.
The purpose of this dissertation is to defend the idea that the empirical responsibilities of binding theory can be handled in a more psychologically and historically realistic way when assigned to the field of pragmatics. In particular, I wish to show that Optimality Theory (OT) (Prince & Smolensky, 1993), the stochastic OT and Gradual Learning Algorithm of Boersma (1998), the Recoverability of OT of Wilson (2001) and Buchwald et al. (2002), and the bidirectional OT of Blutner (2000b) and Bidirectional Gradual Learning Algorithm of Jäger (2003a) can all participate in a formal framework in which one can formally spell out and justify the idea that the distributional behavior of bound pronouns and reflexivs is a pragmatic phenomenon.
In what follows, I first briefly review Perlmutter (1968, 1970), in which it is argued that aspectual verbs are ambiguous between control and raising. I suggest that while the argument for the raising analysis is solid, the arguments supporting the control analysis of aspectual verbs are less so. As an alternative hypothesis to consider, I introduce the structural ambiguity hypothesis. In Section 3, I review three recent analyses of control and raising. Although there are important differences among them, they all share the basic assumption that the control/raising distinction is due to differences in selectional restrictions that the lexical items impose. Under such an assumption, the lexical ambiguity hypothesis is the only available option. In Section 4, I present evidence for the structural ambiguity hypothesis from studies concerning aspectual verbs in languages from four distinct families, German (Wurmbrand 2001), Japanese (Fukuda 2006), Romance languages (Cinque 2003), and Basque (Arregi Molina-Azaola 2004). These data strongly suggest that across languages aspectual verbs can appear in two different syntactic positions, either below or above vP, or the projection with which an external argument is introduced (Kratzer 1994, 1996, Chomsky 1995). Given these findings, I argue that it is the aspectual verbs' position with respect to vP which creates the control/raising ambiguity. When an aspectual verb appears in a position that is lower than vP, an external argument takes scope over the aspectual verb. Thus, it is interpreted as control. When an aspectual verb appears in a position that is higher than vP, on the other hand, it is the aspectual verb that takes scope over an entire vP, including the external argument. Thus, it is interpreted as raising. In section 5, I extend the scope of this study to include a discussion of want-type verbs in Indonesian, as analyzed in Polinsky & Potsdam (2006). Polinsky & Potsdam argue that the Indonesian want-type verbs must be raising in at least certain cases where they allow a rather peculiar interpretation. Although they assume that there are also control counterparts of the want-type verbs, I argue that applying the proposed analysis to the want-type verbs does away with the need for stipulating two distinct lexical entries for these verbs. Section 6 concludes the paper.
Starting from the basic observation that, across languages, the anticausative variant of an alternating verb systematically involves morphological marking that is shared by passive verbs, the goal of this paper is to provide a uniform and formal account of these arguably two different construction types. The central claim that I put forward is that passives and anticausatives differ only with respect to the event-type features of the verb but both arise through the same operation, namely suppression by special morphology of a feature in v that encodes the ontological event type of the verb. Crucially, I argue for two syntactic primitives, namely act and cause, whereto I trace the passive/anticausative distinction. Passive constructions across languages are made compatible by relegating the differences to simple combinatorial properties of verb and prepositional types and their interactions with other event functors, which are in turn encoded differently morphologically across languages. New arguments are brought forward for a causative analysis of anticausatives. Agentive adverbials are examined, and doubt is cast on the usefulness of by-phrases as a diagnostic for argumenthood.
Starting from a consideration of the internal make-up of adverbial clauses this paper shows that the widespread assumption that fronted arguments in English and CLLD constituents in Romance occupy the same position leads to a number of problems. I will conclude that the position occupied by English topicalized arguments differs from that of the CLLD topics in Romance. In particular, English topics occupy a higher position in the left periphery. The final part of the paper compares three proposals for the lower topic position in Romance.
Dynamic semantic accounts of presupposition have proven to quite successful improvements over earlier theories. One great advance has been to link presupposition and anaphora together (van der Sandt 92, Geurts 95), an approach that extends to integrate bridging and other discourse phenomena (Asher and Lascarides 1998a,b). In this extended anaphoric account, presuppositions attach, like assertions, to the discourse context via certain rhetorical relations. These discourse attachments constrain accommodation and help avoid some infelicitous predictions of standard accounts of presupposition. Further, they have interesting and complex interactions with underspecified conditions that are an important feature of the contributions of most presupposition triggers.
Deictic uses of definites, on the other hand, seem at first glance to fall outside the purview of an anaphoric theory of presupposition. There seems to be little that a discourse based theory would have to say. I will argue, however, that a discourse based account can capture how these definites function in conversation. In particular such accounts can clarify the interaction between the uses of such deictic definites and various conversational moves. At least some deictic uses of definites generate presuppositions that are bound to the context via a rhetorical function that I'll call unchoring, which if successful entails a type of knowing how. If this anchoring function is accepted, then the acceptors know how to locate the referent of the definite in the present context. I'll concentrate here just on definites that refer to spatial locations, where the intuitions about anchoring are quite clear. But I think that this view extends to other deictic uses of definites and has ramifications for an analysis of de re attitudes as well.