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2016 ; 10 Suppl 3
(Suppl 3
): 67
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Leveraging syntactic and semantic graph kernels to extract pharmacokinetic drug
drug interactions from biomedical literature
#MMPMID27585838
Zhang Y
; Wu HY
; Xu J
; Wang J
; Soysal E
; Li L
; Xu H
BMC Syst Biol
2016[Aug]; 10 Suppl 3
(Suppl 3
): 67
PMID27585838
show ga
BACKGROUND: Information about drug-drug interactions (DDIs) supported by
scientific evidence is crucial for establishing computational knowledge bases for
applications like pharmacovigilance. Since new reports of DDIs are rapidly
accumulating in the scientific literature, text-mining techniques for automatic
DDI extraction are critical. We propose a novel approach for automated
pharmacokinetic (PK) DDI detection that incorporates syntactic and semantic
information into graph kernels, to address the problem of sparseness associated
with syntactic-structural approaches. First, we used a novel all-path graph
kernel using shallow semantic representation of sentences. Next, we statistically
integrated fine-granular semantic classes into the dependency and shallow
semantic graphs. RESULTS: When evaluated on the PK DDI corpus, our approach
significantly outperformed the original all-path graph kernel that is based on
dependency structure. Our system that combined dependency graph kernel with
semantic classes achieved the best F-scores of 81.94 % for in vivo PK DDIs and
69.34 % for in vitro PK DDIs, respectively. Further, combining shallow semantic
graph kernel with semantic classes achieved the highest precisions of 84.88 % for
in vivo PK DDIs and 74.83 % for in vitro PK DDIs, respectively. CONCLUSIONS: We
presented a graph kernel based approach to combine syntactic and semantic
information for extracting pharmacokinetic DDIs from Biomedical Literature.
Experimental results showed that our proposed approach could extract PK DDIs from
literature effectively, which significantly enhanced the performance of the
original all-path graph kernel based on dependency structure.