Ora Lassila is a Finnish computer scientist who lives in the U.S. and works as a technologist at Amazon Web Services.
His early work in this area included proposing the original RDF Specification with Ralph R. Swick and he has been an elected member of the World Wide Web Consortium (W3C) Advisory Board since 1998.
In 1996–1997, he was a visiting scientist at MIT Laboratory for Computer Science, working with W3C, and has also held positions at the Robotics Institute of Carnegie Mellon University, as a Research Scientist at the CS Laboratory of Helsinki University of Technology, and a research fellow at the Nokia Research Center in Cambridge, MA.
His work includes a frame-based Knowledge Representation system (dubbed "SCAM") that he developed (first at HUT and later at CMU) and which flew on board the NASA Deep Space 1 probe that passed the asteroid belt in 1999.
The system served as the KR substrate for an on-board planner used in an experiment to have the probe perform its functions autonomously.