The invention discloses a trigger word tagging
system and method for biomedical events. The trigger word tagging
system comprises a pretreatment module, a tagging
model building module and a tagging module, wherein the pretreatment module is used for acquiring a training sample and a testing sample and comprises a word segmentation unit, a
protein molecule identification unit, a
feature extraction unit and a pre-tagging unit; the word segmentation unit is used for acquiring the word sequence of an original text; the
protein molecule identification unit is used for identifying
protein molecules and replacing with a standard mode to bring more convenience for
feature extraction and trigger word tagging; the
feature extraction unit is used for extracting the word forms, the word characteristics and other syntactic properties and semantic properties, and finally pre-tags the word sequence as a training and testing sample set; the tagging
model building module is used for building a feature template, generating characteristic functions, and estimating weights corresponding to the characteristic functions to obtain a CRFs trigger word tagging model; the tagging module is used for trigger word tagging of an unknown
test sequence and displays the result on a GUI interface.