About the Authors

Xiang Zhang

Contributed equally to this work with: Xiang Zhang, Wei Cheng

Affiliations Microsoft Research, Los Angeles, California, United States of America, Case Western Reserve University, Cleveland, Ohio, United States of America, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America

Wei Cheng

Contributed equally to this work with: Xiang Zhang, Wei Cheng

Affiliation University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America

Jennifer Listgarten

Affiliation Microsoft Research, Los Angeles, California, United States of America

Carl Kadie

Affiliation Microsoft Research, Los Angeles, California, United States of America

Shunping Huang

Affiliation University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America

Wei Wang

Affiliation University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America

David Heckerman

heckerma@microsoft.com

Affiliation Microsoft Research, Los Angeles, California, United States of America

Competing Interests

The authors have read the journal's policy and have the following conflicts: David Heckerman, Jennifer Listgarten, and Carl Kadie are with Microsoft Research. This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: XZ DH. Performed the experiments: XZ WC SH DH. Analyzed the data: XZ WC JL DH. Contributed reagents/materials/analysis tools: CK. Wrote the paper: XZ WC WW DH.