Data scientist | Machine Learning Researcher | Artist



  • M.S., University of Southern California (2003 to 2005) Degree: Civil Engineering

  • B.S., Anna University, Chennai, India (1999 to 2003) Degree: Civil Engineering


  • Quantitative Modeling: 7+ years experience. Linear and Non-linear Optimization, Linear Regression analysis, Advanced logistic regression, Analysis of Variance, familiar with machine learning algorithms (regression, classification, clustering, deep learning).

  • Programming: 8+ years experience.

    • Advanced Level: Python (pandas, numpy, scipy, keras, IPython), R
    • Intermediate Level: Visual Basic, Shell scripting (Linux, Unix), SQL
    • Basic Level: Spark (distributed systems using pyspark), Git
  • Spatial Statistics/Programming: 5+ years experience. ArcGIS (ArcPy), R, Leaflet.

  • Visualization: 7+ years experience. R (ggplot2, lattice), Python (matplotlib), Gephi, Keynote/Powerpoint, HTML, LaTeX.
  • Consulting: 3+ years experience. Worked with cross-functional teams and various stakeholders to deliver projects on time, prepared several proposals and deliverables.
  • Communication: Delivered many professional presentations at academic and non-academic conferences, published research articles and reports, and developed many project proposals.


  • Data Scientist, Palo Alto Research Center (Xerox PARC), Palo Alto, CA (2017 to Current)

  • Post-doctoral Researcher, Institute of Transportation Studies, UC Davis, CA (2016 to 2017)

    • Developed a spatial consumer segmentation algorithm to analyze different categories of buyers for advanced vehicle technologies (Tools: R, QGIS)
    • Developed a framework to integrate a comprehensive energy system model output to an air quality model (Tools: Bash, HDFS)
    • Developed a least-cost optimization model for the US energy systems (Tools: GAMS, R)
  • Graduate Student Researcher, Institute of Transportation Studies, UC Davis, CA (2010 to 2016)
    • Developed a novel methodology to incorporate behavioral elements in long-term energy systems models, focusing on transportation sector
    • Worked on developing various policy scenarios such as consumer rebates, infrastructure investments, and feebates to determine the optimal policy options to meet the climate target goals
    • Collaborated with the research team in University College Cork, Ireland, to develop a modeling approach and analyze different modal choices of people in Ireland and California
    • Assisted in developing the energy systems model specifically to meet the AB 32 goals in CA, and provided various policy pathway reports to California Air Resources Board
  • Research Fellow, International Institute for Applied Systems Analysis, Laxenburg, Austria (Summer 2013)
    • Carried out an independent research project for a period of 3 months and successfully integrated vehicle consumer behavior in IIASA’s MESSAGE energy system model for the North American region.
  • Engineering Consultant, Kimley-Horn and Associates, Inc., Oakland, CA (2007 to 2010)
    • Experience in managing a team on a traffic signal design project
    • Provided systems engineering technical support at Traffic Management Centers, and developed fiber optic communications design plans
    • Experience in wireless communications design projects in ITS applications
    • Experience in deployment planning, troubleshooting, programming and calibrating the Intelligent Transportation Systems (ITS) devices
    • Developed specifications and construction cost estimates for ITS design
    • Experience in street lighting design and lighting design plans using AGI32 software
    • Participated in various project meetings with clients, stakeholders, agencies, and design team members.
    • Developed GIS maps for ITS device deployment plans
    • Experience in writing technical reports and proposals
    • Experience in data collection, field work on traffic design projects
  • Staff Engineer, Iteris, Inc., Anaheim, CA (2005 to 2007)
    • Extensive experience in deployment planning, troubleshooting, programming and calibrating the Intelligent Transportation Systems (ITS) devices, such as data communications systems, fiber optic equipment, routes/switches, traffic cameras, and traffic control equipment.
    • Worked in several Traffic Management Centers (TMCs) in Orange County, and helped set up communications network between ITS devices at the signal intersections to the TMC from scratch
    • Developed AutoCAD plans for the traffic signal intersection design
    • Developed GIS maps for ITS design projects


  • Early Stage Innovation Excellence Award, Palo Alto Research Center (Dec 2017)
  • Helene M. Overly Memorial Graduate Scholarship, WTS Sacramento (Jan 2015)
  • UCTC Dissertation Fellowship, University of California Transportation Center (Dec 2014)
  • Young Scientists Summer Program, International Institute for Applied Systems Analysis (Jun 2013)
  • ITS Davis-Chevron Fellowship, (Feb 2011)
  • Sustainable Transportation Center Fellowship, ITS Davis (Sep 2010)
  • Outstanding Academic Achievement Award, University of Southern California (Aug 2005)
  • C.R. Narayana Rao Endowment, Endowment for having secured highest GPA in I to VI semester of B.E. Civil Engineering (Aug 2002)


  • Improving the behavioral realism of global integrated assessment models: An application to consumers’ vehicle choices (2016), David L. McCollum, Charlie Wilson, Hazel Pettifor, Kalai Ramea, Volker Krey, Keywan Riahi, Christoph Bertram, Zhenhong Lin, Oreane Y. Edelenbosch, Sei Fujisawa, Transportation Research Part D.

  • Incorporating Behavioral Effects from Vehicle Choice Models into Bottom-Up Energy Sector Models (2015), David Bunch, Kalai Ramea, Sonia Yeh, Chris Yang.

  • COCHIN-TIMES: Consumer Choice Integration in TIMES and their Implications on Climate Policy Analysis (2015), Kalai Ramea, David Bunch, Chris Yang, Sonia Yeh.

  • Achieving California's 80% greenhouse gas reduction target in 2050: Technology, policy and scenario analysis using CA-TIMES energy economic systems model (2015), Chris Yang, Sonia Yeh, Saleh Zakerinia, Kalai Ramea, David McCollum

  • Incorporating travel behaviour and travel time into TIMES energy system models (2014), Applied Energy, Hannah Daly, Kalai Ramea, Alessandro Chiodi, Sonia Yeh, Maurizio Gargiulio, Brian O Gallachoir

  • SUMMARY FOR POLICYMAKERS Modeling Optimal Transition Pathways to a Low Carbon Economy in California (2014), Chris Yang, Sonia Yeh, Kalai Ramea, Saleh Zakerinia, David McCollum, David Bunch, Joan Ogden

  • Integrating Vehicle Consumer Choice into the MESSAGE Integrated Assessment Model: Implications for Energy Efficiency and Advanced Technology (2013), Kalai Ramea, David McCollum


  • Integration of Vehicle Consumer Choice in Energy Systems Optimization Models using the COCHIN-TIMES model (2017). Kalai Ramea, David Bunch, Chris Yang, Sonia Yeh, Joan Ogden.

  • COCHIN-TIMES-2.0: Analyzing the interactions between fuel distribution infrastructure and consumer purchase behavior (2017). Kalai Ramea, David Bunch, Chris Yang, Sonia Yeh, Joan Ogden.

  • Integrating Vehicle Consumer Choice in California and US Energy Systems Models: Implications on National Consumer Preference due to Statewide Policies (2017). Kalai Ramea, David Bunch, Chris Yang, Sonia Yeh, Joan Ogden.