Table 11.
Summary of system architectures.
| NLP methods | Events | Resources | ||||||
|---|---|---|---|---|---|---|---|---|
| Team | Lexical | Syntactic | Trigger | Arg | Group | Modif. | Corpora | Other |
| TEES-2.1 | Porter | McCCJ + SD | SVM | SVM | SVM | SVM | GE | hedge words |
| NaCTeM | Snowball | Enju, GDep | SVM | SVM | SVM | SVM | (see text) | triggers |
| NCBI | MedPost, BLem | McCCJ + SD | Joint, subgraph matching | - | GE, EPI | - | ||
| RelAgent | Brill | fnTBL, custom | rules | rules | rules | rules | - | - |
| UET-NII | Porter | Enju | SVM | MaxEnt | Earley | - | - | triggers |
| ISI | CoreNLP | CoreNLP | NERsuite | Joint, MaltParser | - | - | - | |
Abbreviations: Trigger: event trigger detection, Arg: trigger-argument relation detection, Group: argument grouping into event structures, Modif.: event modification prediction, CoreNLP: Stanford CoreNLP, Porter: Porter stemmer, BLem: BioLemmatizer, Snowball: Snowball stemmer, McCCJ: McClosky-Charniak-Johnson parser, Charniak: Charniak parser, SD: Stanford Dependency conversion, SVM: Support Vector Machines, MaxEnt: Maximum Entropy Modeling.