Dan Greening is a computer scientist currently focusing on adaptive location services. He is CEO of BigTribe Corporation, an internet software company focusing on location services and personalization. BigTribe has developed a unique adaptive personalization algorithm that recommends locations (restaurants, stores, parks, etc.) you'll enjoy visiting and services (taxis, movie tickets, restaurant reservations, prescription refills, etc.) you'll use. It works with connected devices, such as web browsers and cell phones, and disconnected devices, such as PDAs.

In 2002, Dr. Greening was chair of the Location Interoperability Forum's Standards Group (now part of Open Mobile Alliance), which wrote the widely-adopted Mobile Location Protocol. The Mobile Location Protocol allows middleware systems to transmit location information in a technology-neutral way. It can preserve privacy and permissions while roaming. It can represent location information in local coordinate reference systems, making it easier to use local maps and directories. These factors are key for deploying location services in mobile telephone systems.

Dr. Greening was formerly Vice President of Engineering for Macromedia, directing software architecture, engineering, documentation and quality assurance for LikeMinds and Aria, marketing tools that improve revenues and quantify traffic on web sites. LikeMinds is an adaptive personalization system providing click-stream and preference-based collaborative filtering and market basket analysis in real-time, also on highly-trafficked sites. LikeMinds helps maximize the revenue potential for each visitor, and strengthens one-to-one relationships with customers, increasing retention and reactivation rates. Greening designed the parallel-processing architecture for LikeMinds, making it more scalable and accurate than competitors. LikeMinds is now bundled with IBM's WebSphere Commerce Server, where it displaced a well-entrenched competitor previously bundled with WebSphere.

Aria was a web traffic and ecommerce analyzer for highly-trafficked sites, such as the US Postal Service. Aria helped marketers discover key traffic patterns and modify web sites to improve overall effectiveness.

Dr. Greening's background includes corporate and engineering management, market research, sales and technology. Prior to Macromedia, he was Founder and CTO of the LikeMinds company. Previously he was Founder and CEO of Chaco Communications, a 3D graphics software company that created VR Scout, one of the first VRML (Virtual Reality Modeling Language) browsers, and Pueblo (now an open source application), a popular multi-user domain (MUD) client. Previously he headed the UNIX development team for Software Transformation Inc., bought by Novell in 1990.

Greening is a recognized expert in location services and collaborative filtering, quoted in Directions, Scientific American, BBC news, and InternetWeek. He has filed patents in the area of personalized marketing, and has published articles on collaborative filtering, simulated annealing, and parallel processing. He has been a regular contributor to Web Techniques magazine, discussing marketing and technology matters. Greening has Ph.D. (1995) and Masters (1987) degrees in computer science from UCLA, and a Bachelor's (1982) degree in computer engineering from the University of Michigan.