Figure 1

Architecture for drug-drug interactions extraction This figure shows the pipeline architecture of our drug-drug interaction prototype. Firstly, texts are processed by the MMTx program. This tool performs sentence splitting, tokenization, POS-tagging, chunking, and linking of phrases with UMLS concepts. Then, the drugs found in such documents are classified into drug families by a set of nomenclature rules (WHOINN affixes) recommended by the World Health Organization (WHO) International Nonproprietary Names (INNs) Program to identify and classify pharmaceutical substances. Over this basis, anaphora resolution is carried out to account for both nominal phrases referring to drugs and pronouns. Finally, the output of the previous modules is sent to the relation extraction module that exploits this information in order to account for drug interactions in biomedical documents.