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NLDB’04 – June 23 – 25, Salford, Manchester, United Kingdom 0/9 Semantic Tagging and Chunk- Parsing in Dynamic Modeling G. Fliedl, Ch. Kop, H.C. Mayr,

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Presentation on theme: "NLDB’04 – June 23 – 25, Salford, Manchester, United Kingdom 0/9 Semantic Tagging and Chunk- Parsing in Dynamic Modeling G. Fliedl, Ch. Kop, H.C. Mayr,"— Presentation transcript:

1 NLDB’04 – June 23 – 25, Salford, Manchester, United Kingdom 0/9 Semantic Tagging and Chunk- Parsing in Dynamic Modeling G. Fliedl, Ch. Kop, H.C. Mayr, A. Salbrechter, G. Weber, Ch. Winkler

2 NLDB’04 – June 23 – 25, Salford, Manchester, United Kingdom 1/9 natural language sentence parsing or tagging Die Auftragsab- teilung bearbeitet die Posten Text Mapping into UML Validation Interpretation to collect KCPM entries order customer article Motivation /1 About the Project /1

3 NLDB’04 – June 23 – 25, Salford, Manchester, United Kingdom 2/9 Motivation /2 notions: interaction diagram notions: state charts notions: activity- diagram notions: use case diagram KCPM entries thing-, operation-, cooperation-,connection- types, pre- and post conditions notions: DFD petri-nets EPK notions: UML-object- model, ER, HERM, … About the Project /2

4 NLDB’04 – June 23 – 25, Salford, Manchester, United Kingdom 3/9 Conceptual Predesign (KCPM) Modeling notions of KCPM Dynamic operation type, conditions, cooperation type, thing type (+ meta attributes)  task must be executed (operation type)  someone is responsible to execute the task (actor / thing type)  tasks manipulates things (parameter / thing type) (e.g. thing types perform tasks, tasks update/read thing types, thing types are recipients)  a set of tasks can only be executed under specific pre-conditions and the execution leads to post-conditions (cooperation type)  things can be involved in conditions (involved thing types) (e.g. things have a specific state expressed by these conditions)

5 NLDB’04 – June 23 – 25, Salford, Manchester, United Kingdom 4/9 FEATURES  POS-Tagger  NP and PP Chunking  Verb classification (12 Verbclasses and Subclasses)  Word stemming  Morphological analysis  Tree representation in XML  Integration in MS Word Tagging /1

6 NLDB’04 – June 23 – 25, Salford, Manchester, United Kingdom 5/9 Tagging /2

7 NLDB’04 – June 23 – 25, Salford, Manchester, United Kingdom 6/9 Mapping Idea (From NL to KCPM) (1)Fundamental relationships between the respective phrases have to found out based on the - verb category, - PAS and the semantic roles – Agent (AG), Theme (TH), Goal (GO)… - sentence mode (active voice, passive voice) - type of clause - identification of noun phrases - articles … (2)After that, these relationships are interpreted (mapped) to the KCPM dynamic model Mapping /1

8 NLDB’04 – June 23 – 25, Salford, Manchester, United Kingdom 7/9 Example 1 Mapping /2 comes in eV order TH Der Auftrag trifft ein (The order comes in) Ad (1) Fundamental relationships Ergative Verb  1 internal Argument Internal Argument can be found either - The first N3 tag before the verb (default/normal case) - Directly after the verb (N3 is not in the topic position) Ad (2) Interpretation - An ergative verb is a candidate for a condition - The internal Argument is the involved thing type of the condition

9 NLDB’04 – June 23 – 25, Salford, Manchester, United Kingdom 8/9 Example 2 Mapping /3 checks tvag2 article TH Die Auftragsabteilung prüft jeden Artikel des Auftrags (The order department checks each article of the order) Ad (1) Fundamental relationships Binary Agentive Verb  1 external Argument (AG)  1 internal Argument (TH) freedom of topicalisation semantic roles are hard to identify. cases of the nouns are used (articles, quantifiers) Ad (1) Fundamental relationships - An agent verb is a candidate for an operation - Arguments are the involved thing types of the operation order department order AG Poss.

10 NLDB’04 – June 23 – 25, Salford, Manchester, United Kingdom 9/9 Conclusion We try to find the balance between free sentences which we still analyzable and interpretable Extended POS-Tagging is a possible solution to that To find semantic Relationship then remains to the interpretation part Extended Tagging has to combined with deep parsing in some cases


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