tailieunhanh - Báo cáo khoa học: "Extracting Semantic Roles from a Model of Eventualities"

Following this tradition, many researchers recognize their usefulness in the description of language - - even if they do not agree on their significance [7]. However, a weak or strong commitment to this notion does not elude the fact that it proves to be very difficult to settle on a finite set of labels along with their formal definitions. The dilemma resulting from this challenge is well known: to require a univocal identification by each role results in an increase in their number while to abstract their semantic content gives rise to an inconsistent set. . | Extracting Semantic Roles from a Model of Eventualities Sylvie Ratté Université du Québec à Montréal I Linguistics Department CP. 8888 Succ. A Montréal QC H3C 3P8 e-mail sr@ The notion of semantic roles is usually attributed to Fillmore 8 however its history can be traced back through Tesnière 16 to Panini. Following this ưadition many researchers recognize their usefulness in the description of language even if they do not agree on their significance 7 . However a weak or strong commitment to this notion does not elude the fact that it proves to be very difficult to settle on a finite set of labels along with their formal definitions. The dilemma resulting from this challenge is well known to require a univocal identification by each role results in an increase in their number while to abstract their semantic content gives rise to an inconsistent set. If a finite set is possible one has to find a proper balance between these two extremes. As a result every flavor of roles have been used from time to time in linguistics . GB in the spirit of Fillmore HPSG in the line of situation semantics and also in Al 10 see also 4 . Between the total refusal to use those labels as in GPSG and the acceptance of individual roles as in HPSG there is a wide range of proposals on what constitute a good set of L inguistic -Roles 7 and as a consequence on the way to differentiate between them and define them. Most of the definitions have been based on the referential properties that can be associated with each role bearer . an AGENT is a volitional animate entity . Even if this approach is necessary at one time or another this kind of definition inevitably leads to either the let s create another role or the let s abstract its definition syndromes. Properties are not always of the static kind though. Sometimes dynamic properties are also used . an AGENT is the perceived instigator of the action . Since one of the desired characteristic of a roles system Is the .