I am faculty at Universidad Nacional Autónoma de México (UNAM) in the Instituto de Investigaciones en Matemáticas Aplicadas y Sistemas (IIMAS). My research areas are natural language processing, computational linguistics and information retrieval; specifically applications, search for answers, semantic similarity, attribution of authorship and author profiling. During my Ph.D. I introduced text representation structures based on graphs to facilitate NLP tasks and a new method to calculate the semantic similarity between texts, called soft cosine similarity, which considers the semantic information of characteristics such as words, n-grams, POS tags, etc.