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This paper is a contribution to the ongoing discussion on treebank annotation schemes and their impact on PCFG parsing results. We provide a thorough comparison of two German treebanks: the TIGER treebank and the TüBa-D/Z. We use simple statistics on sentence length and vocabulary size, and more refined methods such as perplexity and its correlation with PCFG parsing results, as well as a Principal Components Analysis. Finally we present a qualitative evaluation of a set of 100 sentences from the TüBa- D/Z, manually annotated in the TIGER as well as in the TüBa-D/Z annotation scheme, and show that even the existence of a parallel subcorpus does not support a straightforward and easy comparison of both annotation schemes.
Sentence and construction types generally have more than one pragmatic function. Impersonal deontic declaratives such as ‘it is necessary to X’ assert the existence of an obligation or necessity without tying it to any particular individual. This family of statements can accomplish a range of functions, including getting another person to act, explaining or justifying the speaker’s own behavior as he or she undertakes to do something, or even justifying the speaker’s behavior while simultaneously getting another person to help. How is an impersonal deontic declarative fit for these different functions? And how do people know which function it has in a given context? The authors address these questions using video recordings of everyday interactions among speakers of Italian and Polish.
In this paper, we provide an analysis of temporality in Hausa (Chadic, Afro-Asiatic). By testing the hypothesis of covert tense (Matthewson 2006) against empirical data, we show that Hausa is genuinely tenseless in the sense that the grammar does not restrict the relation between reference time and utterance time. Rather, temporal reference is pragmatically inferred from aspectual and contextual information. We also argue that future time reference in Hausa is realized as a combination of a modal operator and a prospective aspect, thus involving the modal meaning components of intention and prediction as well as event time shifting.
As can be shown for English data, the assimilation of the alveolar stop can result from an increased gestural overlap of the following oral closure gesture. Our experiment with German synthetic speech showed similar results. Further, it suggests that it is neccessary to complete the gestural specification of the glottal state. A voiced stop should be represented not only by an oral gesture, but by a glottal one as well.
Analyses of jaw movement(obtained by Electromagnetic Articulography) and acoustics show that loud speech is an intricate phenomenon. Besides involving higher intensity and subglottal pressure it affects jaw movements as well as fundamental frequency and especially first formants. It is argued that all these effects serve the purpose of enhancing perceptual salience.
This work exploited coarticulation and loud speech as natural sources of perturbation in order to determine whether articulatory covariation (motor equivalent behavior) can be observed inspeech that is not artificially perturbed. Articulatory analyses of jaw and tongue movement in the production of alveolar consonants by German speakers were performed. The sibilant /s/ shows virtually no articulatory covariation under the influence of natural perturbations, whereas other alveolar consonants show more obvious compensatory behavior. Our conclusion is that an effect of natural sources of perturbation is noticable, but sounds are affected to different degrees.
The vowel quality in some diphthongs of Swabian (an upper german dialect) was determined by measurement of first and second formant values. A minimal contrast could be shown between two different diphthong qualities […], where for Standard German only one is assumed, viz. /ai/. The two diphthong qualities differ only slightly in onset and offset vowel quality, so a better understanding of their relationship was expected from an examination of their dynamic aspects. Our preliminary results suggest that there is indeed a difference in the temporal structure of the two diphthongs.