Bird S. (1992), "Finite-state Phonology in HPSG", in proceedings of COLING'92.  Home/Search   Document Details and Download   Summary   Related Articles   Check

....belongs to the same structure sign, we can easily express relations between them. The syntax semantics interface is one of the strong points of this theory (see [Pollard89] and [Pollard94] but it does not really take phonology into account. Certain studies are trying to fill this gap (see [Bird92], Bird94] or [Blache93b] The first step towards integration consists in representing prosodic information within the phon feature for which we can propose a more detailed representation than in [Pollard94] We define two steps in this completion of the phon feature: one the representation of ....

Bird S. (1992), "Finite-state Phonology in HPSG", in proceedings of COLING'92.

....Finite Automata as Typed Feature Structures Finite automata (FA) and similar devices are heavily used in computational linguistics and natural language processing as a descriptive means of stating certain facts about natural language. They have been employed in the description of morphophonemics [11, 3] and in the formulation of word order constraints [26] moreover, the use of FA allows for the integration of allomorphy and morphotactics [15, 12] While it is unsurprising that the languages accepted by FA may also be encoded as typed feature descriptions, it is not clear how FA themselves can ....

Steven Bird. Finite-state phonology in HPSG. In Proceedings of the 14th International Conference on Computational Linguistics, COLING-92, pages 74--80, 1992.

....the missing explicit interface documents itself by the absence of e.g. an additional phonetics attribute together with a corresponding complex interpretational relationship between phon and phonetics values. 5 Discussion and summary The finite state and unification based approaches of (Bird 1992) and (Bird Klein 1993) share the concerns of this work in explicitly advancing the enrichment of HPSG by declaratively specified phonological information, but lack the quantitative phonetic orientation pursued here. In contrast, YORKTALK (Coleman 1992) constitutes a synthesis model within the ....

Bird, S. (1992): Finite-State Phonology in HPSG. In: Proceedings of the 15th International Conference on Computational Linguistics, Nantes.

....dreamed; burn, burnt, burned) 1 Throughout this paper we will ignore complications of morphographemics and morphophonemics. For proposals on how such complications can be dealt with within the accounts of the lexicon we consider see e.g. Calder (1989) Cahill (1990) Russell et al. 1991) or Bird (1992). Proposals for accounting for such exceptions to blocking have not treated blocking itself as a default, but have either, in effect, denied that any such general principle is at work in the lexicon by stipulating its effect on a word by word basis (Fraser Hudson, 1992) or treated those verbs ....

Bird, S. (1992) `Finite-state phonology in HPSG', Proceedings of the 15th International Conference on Computational Linguistics (COLING-92), Nantes, France, pp. 74--80.

....et al. 1992) testify. This impedes the identification of particularly important predecessors, among whom nonetheless three stand out. First, Trost 1991 s use of two level morphology in combination with featurebased filters was an important impetus. Second, researchers at Edinburgh (Calder 1988, Bird 1992) first suggested using FDLs in phonological and morphological description, and Bird 1992 suggests describing FA in FDL (without showing how they might be so characterized, however in particular, providing no FDL definition of what it means for an FA to accept a string) Third, Cahill 1990 posed ....

....among whom nonetheless three stand out. First, Trost 1991 s use of two level morphology in combination with featurebased filters was an important impetus. Second, researchers at Edinburgh (Calder 1988, Bird 1992) first suggested using FDLs in phonological and morphological description, and Bird 1992 suggests describing FA in FDL (without showing how they might be so characterized, however in particular, providing no FDL definition of what it means for an FA to accept a string) Third, Cahill 1990 posed the critical question, viz. how is one to link the work in lexical inheritance (on ....

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Bird, S. 1992. Finite-State Phonology in HPSG. In Proc. of COLING, 74--80.

....to do. This led us to propose the multi linear code, which overcomes all of the problems above, as discussed in Section 4.3. 119 8.4. Bird Ellison and One level phonology 8.4.1. Background Recently, a new model of autosegmental phonology based on FSAs has been proposed by Bird Ellison [8, 9]. This approach differs from that of Kornai in several fundamental ways. Rather than modelling representations as linear strings and rules as FSTs which operate on them, both representations and rules are modelled using FSAs. This is based on a view of representations as the fundamental objects in ....

Bird, Steven (1992). Finite-State Phonology in HPSG. Proceedings of Coling '92, Nantes, July 1992.

.... 2 # 3 7 7 7 5 3 7 7 7 7 7 7 7 5 3 7 7 7 7 7 7 7 7 7 5 I have put cond concat here, although for bar adjectives, which in this respect are fairly regular, the little morphophonological variation that does exist (e.g. dropping of ig as in entschuldbar) could probably be expressed directly (cf. Bird 1992 for an approach to phonology compatible with HPSG) Next is the part of the hierarchy having to do more directly (but not exclusively) with bar derivation. In this hierarchy the morphological and the semantic part of the rule are separated on one level, so that the respective constraints on the ....

Bird, Steven (1992): "Finite-State Phonology in HPSG". COLING 1. 74-80.

....operations were coded by functional and relational constraints by Bird and Klein (1993) and by Mastroianni (1993) We will follow (Mastroianni 1993) in our treatment of syllable structure and the arrangement of features in segments. This work is closely related to that presented in (Scobbie 1992) (Bird 1992), Bird and Klein 1993) and (Russell 1993) One major difference between our work and that of both Bird and Scobbie is that we have given analyses of vowel harmony. Scobbie, because of his adjacency meta constraint, is unable to do this, and Bird gives no account of such processes, either. In ....

....and oe is the type of non emtpy sequences of objects of type oe, and ffl is the type of the empty sequence. We also allow these operations on descriptions, giving us the full expressive power of regular expressions, similar to the feature structure and automata based approaches developed in (Bird 1992) and (Bird and Ellison 1992) 4 We use ffl as a concateneation operator. Thus, OE ffl describes a string consisting of the concatenation of strings described by OE and . 2 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 4 simple phon roots: 6 ffl 7 ] vowels: h 2 ; 4 i ] sylls: 2 6 6 6 6 6 6 4 ....

S. Bird. 1992. Finite-state phonology in HPSG. In Proceedings of COLING. Nantes, France.

....beyond the assumptions about phonology made in HPSG as it currently stands. We approach these challenges by adopting a formal, non procedural, non linear model of phonology and showing how it can be integrated into HPSG, following on the heels of recent work by the authors (Bird Klein, 1990; Bird, 1992; Klein, 1992) One of the starting assumptions of this work is that phonological representations are intensional, i.e. each representation is actually a description of a class of utterances. Derivations 2 (Bach Wheeler, 1981; Wheeler, 1981; Bird, 1990; Cahill, 1990; Coleman, 1991; Scobbie, ....

....Klein, 1992) One of the starting assumptions of this work is that phonological representations are intensional, i.e. each representation is actually a description of a class of utterances. Derivations 2 (Bach Wheeler, 1981; Wheeler, 1981; Bird, 1990; Cahill, 1990; Coleman, 1991; Scobbie, 1991; Bird, 1992; Walther, 1992; Broe, 1993; Mastroianni, 1993; Russell, 1993) Steven Bird Ewan Klein Phonological Analysis in TypedFeature Systems progress by refining descriptions, further constraining the class of denoted objects. Lexical representations are likewise partial, and phonological constraints ....

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Bird, S. (1992). Finite-state phonology in HPSG. In Proceedings of Coling-92, (pp.

....the same generalisation; orthogonal generalisations are preferred. 4 CONCLUSION The phonological model discribed here is sufficiently explicit to allow a direct implementation, which is currently under development. Integration with a model of syntax and semantics is also being investigated (Bird, 1992). Although the computer is used to determine generalisations about the data and also to perform reanalysis, we do not regard these as solely the domain of the machine. Rather, human intervention in the analysis process is made as easy as possible, so that the user is able to perform comparisons of ....

Bird, S. (1992). Finite-state phonology in HPSG. In Proceedings of Coling-92.

....all strings that result from concatenating a member of S 1 with a member of S 2 . The intersection of A 1 and A 2 accepts the string set S 1 S 2 . Intersection is the method used to combine multiple interacting constraints on a segment string. More detail about automata for phonology is given by Bird (1992) and Bird Ellison (1992) Feature changing harmony is considered to be an extremely rare phenomenon, the cases of Montanes and Chumash being the only ones I am aware of (Lieber (1987:145) claims to only be aware of the latter) In both cases, the conditioning segment is at the right hand end of ....

....to phonology, and this is not permitted in the most recent version of HPSG. Since the subcategorisation is dependent upon the immediately following segment (on the vowel plane) it is possible to localise this contextual information in the phonology attribute using a technique described by Bird (1992), thereby obviating the need for phonologicallysensitive subcategorisation. An advantage of this analysis over the feature changing analysis is that the lexical entries of the verb roots clearly show under what conditions the height value is morphologically determined and under what conditions it ....

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Bird, S. (1992). Finite-state phonology in HPSG. In Proceedings of Coling-92, (pp. 74--80).

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Steven Bird. 1992. "Finite-State Phonology in HPSG". In Proceedings of Coling'92, 23-28 August 1992, Nantes, FR. pp74-80.

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Bird, S. (1992): Finite-State Phonology in HPSG. In: Proceedings of COLING-92, Nantes, pp 74--80.

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Bird, Steven, 1992. Finite-state phonology in HPSG. COLING 15.74-81.

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