Ein Computerlinguistisches Lexikon als komplexes System

Zusammenfassung
This thesis describes a lexicon that allows for the detailed specification of
lexemes, thereby using diverse features to enable an adequate treatment of the
phenomena mentioned above. The question asked in this thesis is:
How must a computational-linguistic lexicon be constructed to optimally
support the fully automatical morphological analysis of German?
The thesis deals specifically with word formation phenomena, but the treatment
of inflection is included in the description of existing systems.
2 The Idea and Realisation
The idea pursued in this thesis is to identify the relevant morphological processes
occurring in the German language, and to assign them to one of two
models of linguistic description (see below). Thus, an adequate treatment for
any of these can be found, and furthermore, the representation of the corresponding
lexical units in the lexicon can be stated. The benefit for the reader is
the documentation of a large German morphological lexicon, particularly with
regard to its internal structure, the description of the morphological units
contained, and the knowledge about the relations between the structure, the
units, and morphological analysis.
Two models of linguistic description
Morphological phenomena can be classified into two types (cf. Hockett (1954)):
1. phenomena, that can be explained in a strictly concatenative fashion (the
so-called item and arrangement (IA) model), and
2. phenomena, that cannot be explained in a strictly concatenative fashion
(the so-called item and process (IP) model).
A great deal of confusion in word formation analysis stems from the fact
that these two models are not sufficiently distinct from one another in the description
of phenomena.
The concept of the stem form
Fuhrhop (1998) introduces the concept of the stem forms. In a stem paradigm
– comparable to the notion of the inflectional paradigm – the compounding
stem forms and the derivation stem forms of a lexeme are listed. These are
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