BMC Med Inform Decis Mak - Discovering context-specific relationships from biological literature by using multi-level context terms.

Tópicos

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Resumo

CKGROUND: The Swanson's ABC model is powerful to infer hidden relationships buried in biological literature. However, the model is inadequate to infer relations with context information. In addition, the model generates a very large amount of candidates from biological text, and it is a semi-automatic, labor-intensive technique requiring human expert's manual input. To tackle these problems, we incorporate context terms to infer relations between AB interactions and BC interactions.METHODS: We propose 3 steps to discover meaningful hidden relationships between drugs and diseases: 1) multi-level (gene, drug, disease, symptom) entity recognition, 2) interaction extraction (drug-gene, gene-disease) from literature, 3) context vector based similarity score calculation. Subsequently, we evaluate our hypothesis with the datasets of the "Alzheimer's disease" related 77,711 PubMed abstracts. As golden standards, PharmGKB and CTD databases are used. Evaluation is conducted in 2 ways: first, comparing precision of the proposed method and the previous method and second, analysing top 10 ranked results to examine whether highly ranked interactions are truly meaningful or not.RESULTS: The results indicate that context-based relation inference achieved better precision than the previous ABC model approach. The literature analysis also shows that interactions inferred by the context-based approach are more meaningful than interactions by the previous ABC model.CONCLUSIONS: We propose a novel interaction inference technique that incorporates context term vectors into the ABC model to discover meaningful hidden relationships. By utilizing multi-level context terms, our model shows better performance than the previous ABC model.

Resumo Limpo

ckground swanson abc model power infer hidden relationship buri biolog literatur howev model inadequ infer relat context inform addit model generat larg amount candid biolog text semiautomat laborintens techniqu requir human expert manual input tackl problem incorpor context term infer relat ab interact bc interactionsmethod propos step discov meaning hidden relationship drug diseas multilevel gene drug diseas symptom entiti recognit interact extract druggen genediseas literatur context vector base similar score calcul subsequ evalu hypothesi dataset alzheim diseas relat pubm abstract golden standard pharmgkb ctd databas use evalu conduct way first compar precis propos method previous method second analys top rank result examin whether high rank interact truli meaning notresult result indic contextbas relat infer achiev better precis previous abc model approach literatur analysi also show interact infer contextbas approach meaning interact previous abc modelconclus propos novel interact infer techniqu incorpor context term vector abc model discov meaning hidden relationship util multilevel context term model show better perform previous abc model

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