With its mixture of theory and experimentation, its mixture of machine- and human-oriented work, its potential for applications and making a real difference in the world, research in information retrieval is all about collaborating with people, both inside and outside academia. I have had the good fortune of working together with a large number of great people:

The image below is a visualization of my academic ancestry, created using data from the Mathematics Genealogy Project. Click on it to get a detailed view; an edge in the graph denotes a PhD student-PhD supervisor relationship; a year indicates the year in which the PhD degree was awarded.