Table 9

Summary of extraction system architectures

Event extraction systems

NLP

Events

Team

Word

Parse

Trig.

Arg.

Group.

Modif.

Other resources


FAUST

CoreNLP, SnowBall

McCCJ + SD

(UMass+Stanford as features)

-

word clusters

UTurku

Porter

McCCJ + SD

SVM

SVM

SVM

SVM

hedge words

UMass

CoreNLP, SnowBall

McCCJ + SD

Joint, dual decomposition

-

-

MSR-NLP

Porter, custom

McCCJ + SD, Enju

SVM

SVM

SVM

-

triggers, word clusters

Stanford

custom

McCCJ + SD

MaxEnt

Joint, MSTParser

-

word clusters

ConcordU

-

McCCJ + SD

Dict

Rules

Rules

Rules

triggers and hedge words

CCP-BTMG

Porter,

WN-lemma

Stanford + SD

Graph extraction & matching

-

-

PNNL

Porter

Stanford

SVM

SVM

Rules

-

UMLS, triggers

PredX

LGP

LGP

Dict

Rules

Rules

-

UMLS, triggers

Relation extraction systems

NLP

Extraction

Other resources

Team

Word

Parse

Entities

Relations

Corpora

Other

UTurku

Porter

McCCJ + SD

SVM

SVM

-

-

VIBGhent

Porter

McCCJ + SD

Dict + rules

SVM

GENIA, PubMed

word similarities

ConcordU

-

McCCJ + SD

Dict

Rules

-

-

HCMUS

OpenNLP

OpenNLP

Dict

Rules

-

-


Abbreviations: Trig./Arg./Group./Modif.=event trigger detection/argument detection/argument grouping/modification detection, CoreNLP = Stanford CoreNLP [117], Porter=Porter stemmer [118], Snowball=Snowball stemmer [119], WN-lemma=WordNet lemmatization, McCCJ=McClosky-Charniak-Johnson parser [97,98], LGP = Link Grammar Parser [120], SD=Stanford Dependency conversion [97], Dict=Dictionary, UMLS=UMLS resources (e.g. lexicon, metamap) [121].

Pyysalo et al. BMC Bioinformatics 2012 13(Suppl 11):S2   doi:10.1186/1471-2105-13-S11-S2

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