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My research interests are in distributed systems, networking, and sensor networks. I am also interested in ubiquitous and energy-efficient computing.
Romain Fontugne, Jorge Ortiz, Nicolas Tremblay, Pierre Borgnat, Patrick Flandrin, Kensuke Fukuda, David E. Culler, Hiroshi Esaki. Strip, Bind, and Search: A Method for Identifying Abnormal Energy Consumption in Buildings. To Appear in the 12th ACM/IEEE Conference on Information Processing in Sensor Networks (IPSN 2013). Philadelphia, PA, USA. April, 2013.
Jorge Ortiz, Yongwoo Noh, Gavin Saldanha, David Su, David E. Culler. Towards Real-time, Fine-grained Energy Analytics in Buildings Through Mobile Phones. To Appear in the 4th ACM Workshop on Embedded Systems for Energy-Efficient Buildings (Buildsys 2012). Toronto, Ontario, Canada. November, 2012.
Stephen Dawson-Haggerty, Jorge Ortiz, Jason Trager, David E. Culler, Randy H. Katz. Energy Savings and the Software-Defined Building. IEEE Design and Test Magazine, Invited Opinion Piece, Special Issue on Green Buildings, V29, N4, (July/August 2012), pp. 56-57.
Jorge Ortiz, Jason Trager, Gavin Saldanha, David E. Culler, Paul K. Wright. Live, Continuous Energy Auditing of Miscellaneous Electrical Loads: Methodology and Results. ACEEE Summer Study on Energy Efficient Buildings 2012.
Jason Trager, Michael Sankur, Jorge Ortiz, Tyler Jones, Jay Taneja, Dave Auslander, David E. Culler, Paul K. Wright. Rapidly Adaptable Plug-load Simulation for Evaluating Energy Curtailment Strategies. ACEEE Summer Study on Energy Efficient Buildings 2012.
Romain Fontugne, Jorge Ortiz, David Culler, Hiroshi Esaki. Empirical Mode Decomposition for Intrinsic-Relationship Extraction in Large Sensor Deployments. First International Workshop on the Internet of Things applications. Beijing, China. April 2012.[pdf]
Steven M. Lanzisera, Stephen Dawson-Haggerty, Xiaofan Jiang, Hoi Ying Cheung, Jay Taneja, Judy Lai, Jorge J. Ortiz, David Culler, Richard Brown.Wireless Electricity Metering of Miscellaneous and Electronic Devices in Buildings. 2011 Future of Instrumentation International Workshop.
Randy H. Katz, David E. Culler, Seth Sanders, Sara Alspaugh, Yanpei Chen, Stephen Dawson-Haggerty, Prabal Dutta, Mike He, Xiaofan Jiang, Laura Keys, Andrew Krioukov, Ken Lutz, Jorge Ortiz, Prashanth Mohan, Evan Reutzel, Jay Taneja, Jeff Hsu, Sushant Shankar An information-centric energy infrastructure: The Berkeley view. In Sustainable Computing: Informatics and Systems, Vol. 1, Issue 1, pgs 7-22, 2011. [link]
Stephen Dawson-Haggerty, Xiaofan Jiang, Jorge Ortiz, Gilman Tolle and David Culler. sMAP - a Simple Measurement and Actuation Profile for Physical Information. 8th ACM Conference on Embedded Networked Sensor Systems (Sensys 2010). [pdf]
Jeff Hsu, Prashanth Mohan, Xiaofan Jiang, Jorge Ortiz, Sushant Shankar, Stephen Dawson-Haggerty, and David Culler. HBCI: Human-Building-Computer Interaction. 2nd ACM Workshop On Embedded Sensing for Energy-Efficient Buildings. (Buildsys 2010). [pdf]
Jorge Ortiz and David Culler. A System for Managing Physical Data in Buildings. Technical Report No. EECS-2010-128, EECS Department, University of California, Berkeley 2010. [pdf]
Stephen Dawson-Haggerty, Jorge Ortiz, Xiaofan Jiang, Jeff Hsu, Sushant Shankar, and David Culler. Enabling Green Building Applications. 6th Workshop on Hot Topics in Embedded Networked Sensor (HotEmnets 2010). [pdf]
Jorge Ortiz and David Culler. Multichannel Reliability Assessment in Real World WSNs. International Conference of Information Processing in Sensor Networks: Special Track on Platform Tools and Design Methods for Network Embedded Sensors 2010 (IPSN 2010). [pdf][ppt]
Stephen Dawson-Haggerty, Jorge Ortiz, Xiaofan Jiang and David E. Culler. The Effect of Link Churn on Wireless Routing. Technical Report No. UCB/EECS-2008-109, EECS Department, University of California, Berkeley, 2008 [pdf]
Jorge Ortiz, Chris R. Baker, Daekyeong Moon, Rodrigo Fonseca, and Ion Stoica. Beacon Location Service: A Location Service for Point-to-Point Routing in Wireless Sensor Networks. International Conference in Information Processing in Sensor Networks: Special Track on Platform Tools and Design Methods For Network Embedded Sensors 2007 (IPSN '07). [pdf] [ ppt]
Xiaofan Jiang, Jay Taneja, Jorge Ortiz, Arsalan Tavakoli, Prabal Dutta, Jaein Jeong, David Culler, Philip Levis, and Scott Shenker. An Architecture for Energy Management in Wireless Sensor Networks. International Workshop on Wireless Sensor Network Architecture 2007. [pdf]
Arsalan Tavakoli, Prabal Dutta, Jaein Jeong, Sukun Kim, Jorge Ortiz, David Culler, Philip Levis, and Scott Shenker. A Modular Sensornet Architecture: Past, Present, and Future Directions. International Workshop on Wireless Sensor Network Architecture 2007. [pdf]
Jorge Ortiz and David Culler. Evaluating Diversity: Evaluating the Cost of Frequency Diversity in Communication and Routing. The 6th ACM Conference on Embedded Networked Sensor Systems (SenSys '08). Awarded Best Poster. [pdf] [ ppt]
Datasense: Sensing the Datacenter (TTX5 2008)
Evaluating the Hairy-Edge Hypothesis: The Effects of Wireless Link Variability on Sensornet Communication Protocols (TTX5 2008)
Location Service for Point-to-Point Routing in Wireless Sensor Networks (TTX3 2006)