His research interests include:
- Algorithms and data structures. His contributions include algorithms for string search such as the Shift Or Algorithm and algorithms for Fuzzy string searching, inspiring also the Bitap algorithm ; co-author of the Handbook of Algorithms and Data Structures ISBN 0-201-14218-X with his former Ph.D. advisor Gaston Gonnet,
- Information retrieval. Co-author of Modern Information retrieval Addison Wesley, ISBN 0-201-39829-X, first edition in 1999 and a second edition in 2011 that won the 2012 book of the year award of the Association for Information Science and Technology.
- Web search and mining. Baeza-Yates funded in 2002 and directed until 2005 the Center for Web Research in the Department of Computer Science of the University of Chile,
- Information visualization
Dr. Baeza-Yates was awarded the J.W. Graham Medal in Computing and Innovation in 2007. In August 2008, Dr. Baeza-Yates was proposed for the Chilean National Prize in Applied Sciences (Premio Nacional de Ciencias Aplicadas) He was proposed again in 2010 and 2012. He is corresponding member of the Chilean Academy of Sciences (2003) and founding member of the Chilean Academy of Engineering (2010). He is a fellow of the Association for Computing Machinery (2009). and an IEEE Fellow (2011).
- Ricardo A. Baeza-Yates at the Mathematics Genealogy Project
- Member profile, Chilean Academy of Sciences, retrieved 2013-02-14.
- ACM Fellow award citation, retrieved 2013-02-14.
- "Introducing the 2011 Fellows: The IEEE Fellows class for 2011 has been announced", the Institute (IEEE), 7 March 2011.
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