MTIX: the Next-Generation Algorithm for Automated Indexing of MEDLINE. NLM Technical Bulletin. 2024 Mar–Apr

The National Library of Medicine (NLM) is committed to advancing biomedical discovery across our databases of biomedical literature, genomic information, and other scientific data. As part of these efforts, NLM strives to produce timely MeSH indexing of MEDLINE biomedical and life sciences citations for the PubMed database. To this end, the Library is pleased to announce the next major milestone in automated MEDLINE indexing: the implementation of the MTIX (Medical Text Indexer-NeXt Generation) algorithm, which replaces the MTIA (Medical Text Indexer-Automated) algorithm. MTIX Technology Although MTIA and MTIX have similar names, they use different technologies. MTIA was a complex system based on a dictionary of MeSH terms, synonyms, and other trigger phrases, with rules created and refined by humans over the course of many years. In contrast, MTIX is a machine learning model known as a neural network, a type of AI.MTIX was trained on millions of MEDLINE...