About the Authors

Jeff Shrager

To whom correspondence should be addressed. E-mail: jshrager@stanford.edu

Affiliation Department of Plant Biology, Carnegie Institution of Washington, Stanford, California, United States of America

Richard Waldinger

Affiliation Artificial Intelligence Center, SRI International, Menlo Park, California, United States of America

Mark Stickel

Affiliation Artificial Intelligence Center, SRI International, Menlo Park, California, United States of America

J.P. Massar

Affiliation Berkeley, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JS RW. Performed the experiments: JS RW. Analyzed the data: JS RW. Contributed reagents/materials/analysis tools: JS MS JM RW. Wrote the paper: JS RW.