What do I do?

Broadly speaking, my primary research interests involve biomedical and social applications of natural language processing.

Language? Biomedical?

Language shapes the world we live in. Information is shared among individuals through verbal and written communication, including biomedical information. Doctors write notes describing patient symptoms, medical history, and diagnoses. The notes are used annotated by hospitals for billing purposes, e.g., medical coding. Scientists write research articles creating new information, including, but not limited to, new drug-drug, drug-gene, and gene-gene interactions. On social media, such as Facebook and Twitter, users describe life events giving insight on the users mental and physical health, indicating possible adverse drug events, depression, or PTSD. I develop methods that can extract biomedical information from many textual data sources.

  1. Neural Transfer Learning for Assigning Diagnosis Codes to EMRs
    A. Rios, R. Kavuluru
    Artificial Intelligence in Medicine. 2019.
    [link]

  2. Complex contagions of information diffusion across social networking platforms
    R. Xiong, Z. Liu, K-K R. Choo, and A. Rios
    AMCIS 2019. Americas Conference on Information Systems.
    [link][pdf]

  3. Few-Shot and Zero-Shot Multi-Label Learning for Structured Label Spaces
    A. Rios and R. Kavuluru
    EMNLP 2018. Conference on Empirical Methods in Natural Language Processing.
    [pdf][preprint][code][video]

Social?

Given the abundance of textual communication online, social problems can now be studied using large-scale NLP methods. Currently, I’m interested in understanding prejudice on social media, offensive language, and analyzing/classifying troll behavior.

  1. How Many Users Are Enough? Exploring Semi-Supervision and Stylometric Features to Uncover a Russian Troll Farm
    N. Nasrin, K.K.R Choo, M. Ko, and A. Rios
    In EMNLP Workshop on NLP4IF: Censorship, Disinformation, and Propaganda 2019.

  2. Complex contagions of information diffusion across social networking platforms
    R. Xiong, Z. Liu, K-K R. Choo, and A. Rios
    AMCIS 2019. Americas Conference on Information Systems.
    [link][pdf]