The Information Retrieval and Data Science Group’s (I.R.D.S.) mission is to research and develop new methodology and open source software to analyze, ingest, process, and manage Big Data and to turn it into information. We contribute to the world’s largest and most often downloaded open source software projects, we apply tried and true techniques including content detection and analysis, crawling, deduplication, similarity, named entity recognition, construction of inverted indices, query analysis, search, relevancy and ranking, interactive query analysis, and management of large data sets. We have expertise in data collection, working with NASA, DARPA, DHS, NIH across a number of domains, Earth Science, Planetary Science, Astronomy, defense, and private industry.


Chris Mattmann


He is the Chief Technology & Innovation Officer in the Information and Technology Solutions Directorate (ITSD), at the Jet Propulsion Laboratory (JPL) in Pasadena, California and an Adjunct Research Professor in the Computer Science Department within USC's Viterbi School of Engineering. At JPL, he developed the third generation of the Apache Object Oriented Data Technology (OODT) data processing and information integration system. OODT is an open source, data-grid middleware used across many scientific domains, such as planetary science, cancer research (go figure), and computer modeling, simulation and visualization. For more detail on OODT you can check out his ICSE 2006 paper that appeared in the Software Engineering Challenges and Achievements track and his 2009 IEEE Space Mission Challenges for Information Technology (SMC-IT) paper describing the refactorization and re-architecting of the data processing framework.

Dr. Jeffrey Miller is currently an Associate Professor of Engineering Practice in the Computer Science department at the University of Southern California. Prior to that, he was an Assistant and Associate Professor in the Computer Engineering department at the University of Alaska Anchorage for six years and an Adjunct Professor in the Computer Science department at California State University, Los Angeles for five years. Dr. Miller’s research interests include vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communication, ethical issues related to driverless vehicles, and Computer Science education (K12, undergraduate, and graduate). He has given talks for the National Academy of Engineers and other organizations related to ethics in driverless vehicles, and he has a passion for K12 STEM education. Jeff helps IRDS by running our Undergraduate Capstone class and has helped supervise several IRDS projects that have advanced machine learning, search, and AI.

Yao-Yi Chiang is an Associate Professor (Research) in Spatial Sciences, the Director of the Spatial Computing Laboratory at the Spatial Sciences Institute, and the Associate Director of the NSF's Integrated Media Systems Center (IMSC) at the University of Southern California (USC). Dr. Chiang received his Ph.D. degree in Computer Science from the University of Southern California; his bachelor’s degree in information management from the National Taiwan University. His general area of research is information integration and data mining with a focus on spatiotemporal data and their applications. Dr. Chiang is also an expert on digital map processing and geospatial information system (GIS). His research interests further include computer vision, image processing, and semantic web. Dr. Chiang develops computer algorithms and intelligent systems that discover, collect, fuse, and analyze data from heterogeneous sources to solve real-world problems. Before USC, Dr. Chiang worked as a research scientist for Geosemble Technologies and Fetch Technologies in California. Geosemble Technologies was founded based on a patent on geospatial data fusion techniques, and he was a co-inventor. Yao-Yi contributes by supervising and mentoring Directed Research projects for IRDS.


Research Assistants

Directed Research (D.R.) Students



  • April 2018 : Poster Abstract for the 2018 EarthCube All Hands Meeting has been accepted.
  • April 2018 : IRDS students Srinidhi Nandakumar and Gayathri Ravichandran win 2018 Viterbi Graduate Hackathon.


IRDS is supported in part by JPL, managed by the California Institute of Technology on behalf of NASA. IRDS is also supported in part by the Information and Referral Federation of Los Angeles County (211 LA County) via research collaborations and partnerships. Additionally, IRDS is supported in part by the DARPA Memex/XDATA/D3M programs and NSF award numbers ICER-1639753, PLR-1348450 and PLR-1445624 funded a portion of the work.

Web Archives - IRDS Mailing List

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