Adriaans, P.: Language Learning from a Categorial Perspective. PhD thesis, University of Amsterdam, Amsterdam, The Netherlands (1992)  Home/Search   Document Not in Database   Summary   Related Articles   Check

....how the learnability results obtained can be adapted to variants of CG, such as Combinatory Categorial Grammars (CCG) Steedman 1985 to 2000] which employ larger sets of categories and or rules than AB CG. Among the computational systems developed for learning CGs, we now look at three systems: Adriaans EMILE [1992], Watkinson and Manandhar s [2000] unsupervised learning system, and Osborne and Briscoe s [1997] Stochastic Categorial Grammar learner. Adriaans ( Adriaans 1992] and [Adriaans and de Haas 2000] defines EMILE as a system that performs CG induction within the PAC learning framework, which is ....

....categories and or rules than AB CG. Among the computational systems developed for learning CGs, we now look at three systems: Adriaans EMILE [1992] Watkinson and Manandhar s [2000] unsupervised learning system, and Osborne and Briscoe s [1997] Stochastic Categorial Grammar learner. Adriaans ([Adriaans 1992] and [Adriaans and de Haas 2000] defines EMILE as a system that performs CG induction within the PAC learning framework, which is discussed in section 2.3.2. The learning algorithm has access to an oracle that provides correct positive examples and also answers questions, providing explicit ....

Adriaans, P. Language Learning From a Categorial Perspective. Academish proefschrift, Universiteit van Amsterdam, 1992.

....of how semantics can help syntax learning. Categorial Grammars are well known for their formalized connection with semantics ( Mon74] DWP81] They provide a good compromise between formalism and linguistic expressivity ( OBW88] Previous works have studied the learnability of such grammars ([Adr92], Kan98] MO98] but neither of them uses the syntax semantics interface to help the syntactic learning process. Links between Kanazawa s learning strategy and semantic information have been shown in [Tel99] This rst approach is still not satisfactory as it does not avoid combinatorial ....

....Inference of Categorial Grammars Learning a Categorial Grammar consists in identifying the categories assigned to each word of its vocabulary. The rewriting schemas are supposed to be known. The formal learnability of Categorial Grammars has been studied in a variant of the PAC model ([Adr92]) and in Gold s model ( Kan96,Kan98] The most powerful result obtained uses the notion of Structural Example. A Structural Example is derived from a syntactic analysis structure by deleting intermediate categories while preserving the terminal symbols and the reduction schemas used. Example 2. ....

P. W. Adriaans. Language Learning from a Categorial Perspective. PhD thesis, University of Amsterdam, Amsterdam, The Netherlands, 1992.

....known. Our aim was to work out the system in which all postulates carry linguistic information and are formulated prior to making all the calculations. We started with a very general notions of a language sample and compatibility on account of their connection with language learning problems (cf. [1]) Below we sketch one possible variation of the system under consideration: Definition 19. Let L = fL t g t2T , L t FS(V ) for all t 2 T ae Tp c . A grammar G is strongly n compatible with L iff VG = V , s G = S and CATG (TG (L t ) CATG (t) for all t 2 T . We say that a grammar G is ....

P. W. ADRIAANS, Language Learning from Categorial Perspective, Universiteit van Amsterdam, Amsterdam, 1992.

.... type assignments a categorial application of the lattice operations originally suggested in [Lambek 61] Such uses of the u; t vocabulary have been explored for grammar development purposes in [Morrill 94a, Kanazawa 92, Hendriks 95] and in the context of a categorial learning theory in [Adriaans 92] where the meet and join connectives are used in formulating clustering operations of the learning algorithm. On the most general level the conjunctive u allows one to compress multiple assignment of types A 1 ; An to a vocabulary element into a single assignment of the form A 1 u ....

Adriaans, P. (1992), Language Learning from a Categorial Perspective. Ph.D. Dissertation. University of Amsterdam.

....simple examples to more complex ones. But our work also provides new insights on previous ones. First, categorial grammars seem to be particularly adapted to the learning process. Recent research has found conditions under which the syntax of these grammars is learnable with positive examples ([3, 1, 12]) But, in these frameworks, only a simpler version of categorial grammars (restricted to rules R1 and R 1) is considered. The main interest of L categorial grammars is that they allow to restrict the number of different categories associated with each word. This number is a crucial parameter for ....

....as input data. In our model, thanks to the tree isomorphism, the semantics translation plays a similar role but in a weaker and more cognitively relevant fashion, as the functional structure of the logical formula gives indication about the functional syntactic structure of the sentence. Adriaans ([1]) also proposed a learning algorithm for categorial grammars using both syntax and semantics but he treated them separately : the semantic learning only started when the syntax learning was achieved instead of helping it as we propose. Learning a natural language is certainly not equivalent to ....

P. W. Adriaans, Language Learning from a Categorial Perspective, Ph.D. thesis, University of Amsterdam, 1992.

....shows a simplified view on the process of natural language based conceptual modeling. In order to initialize the modeling process the domain expert must provide the system analyst an initial natural language specification. Therefore the so called principle of universal linguistic expressibility ([1]) All relevant information can and must be made explicit in a verbal way. which may be concretized by the telephone heuristic ( 18] Explain your observations tot a non expert via a telephone. is a presupposition for this modeling process. The principle of universal linguistic ....

P.W. Adriaans. Language Learning from a Categorial Perspective. PhD thesis, University of Amsterdam, Amsterdam, The Netherlands, 1992.

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Adriaans, P.: Language Learning from a Categorial Perspective. PhD thesis, University of Amsterdam, Amsterdam, The Netherlands (1992)

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P. Adriaans, Language Learning from a Categorial Perspective, PhD thesis, University of Amsterdam, 1992.

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Adriaans, P. W. (1992). Language Learning from a Categorial Perspective, Doctoral dissertation, University of Amsterdam.

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Adriaans, P. (1992), Language Learning from a Categorial Perspective. Ph.D. Dissertation. University of Amsterdam. 42

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