This thesis is a descriptive study of four contrastive discourse connectives in Turkish. The main aim of this study is to analyze the connectives with respect to their meaning and predicate-argument structure and lay out the similarities and differences among contrastive discourse connectives with the help of quantitative analysis. Although the study is limited with contrastive connectives, it will have implications on how to resolve discourse structure in general and illustrate how lexico-syntactic elements contribute to discourse semantics.

This study focuses on the predicate argument structure (PAS) of a sub-class of verbs in Xitsonga - verbs of change of possession: give, contribute, future having, providing, obtaining and verbs of exchange. It is shown that these verbs select various theta roles to form their PAS in the different alternations allowed in this language. The effects of the applicative {-el-} and causative {-is-} verbal affixes on the PAS of such verbs are also considered. The study confirms the fact that the ordering of objects in ditransitive verbs is determined by an interplay of syntactic and semantic factors. Ambiguity arises in the case of two animate objects. In this case the object with a definite reading will appear adjacent to the verb. / African Languages / M. A. (Arican Languages)

This study focuses on the predicate argument structure (PAS) of a sub-class of verbs in Xitsonga - verbs of change of possession: give, contribute, future having, providing, obtaining and verbs of exchange. It is shown that these verbs select various theta roles to form their PAS in the different alternations allowed in this language. The effects of the applicative {-el-} and causative {-is-} verbal affixes on the PAS of such verbs are also considered. The study confirms the fact that the ordering of objects in ditransitive verbs is determined by an interplay of syntactic and semantic factors. Ambiguity arises in the case of two animate objects. In this case the object with a definite reading will appear adjacent to the verb. / African Languages / M. A. (Arican Languages)

Indiana University-Purdue University Indianapolis (IUPUI) / The amount of information produced in the form of electronic free text in healthcare is increasing to levels incapable of being processed by humans for advancement of his/her professional practice. Information extraction (IE) is a sub-field of natural language processing with the goal of data reduction of unstructured free text. Pertinent to IE is an annotated corpus that frames how IE methods should create a logical expression necessary for processing meaning of text. Most annotation approaches seek to maximize meaning and knowledge by chunking sentences into phrases and mapping these phrases to a knowledge source to create a logical expression. However, these studies consistently have problems addressing semantics and none have addressed the issue of semantic similarity (or synonymy) to achieve data reduction. To achieve data reduction, a successful methodology for data reduction is dependent on a framework that can represent currently popular phrasal methods of IE but also fully represent the sentence. This study explores and reports on the benefits, problems, and requirements to using the predicate-argument statement (PAS) as the framework. A convenient sample from a prior study with ten synsets of 100 unique sentences from radiology reports deemed by domain experts to mean the same thing will be the text from which PAS structures are formed.