U.S. Department of Energy

Pacific Northwest National Laboratory


Dr. Mark Greaves - Analysis in Motion Initiative Lead

Mark Greaves has more than 16 years of experience as a computer science researcher, project leader, and research executive.

Prior to joining PNNL in April, Mark served as Director of Knowledge Systems at Vulcan Inc., the private asset management company for Microsoft co-founder Paul Allen. At Vulcan, he led advanced research projects in large scientific knowledge bases, question-answering systems, and digital textbook technology.

Dr. Mark Greaves
(206) 528-3300
Rob Jasper - Analysis in Motion Chief Scientist

Rob Jasper is a manager in PNNL's National Security Directorate. He is a passionate technology executive, leader, and innovator with extensive experience recruiting, motivating, and leading high-performance teams from private technology ventures to Fortune 500 companies.

Rob Jasper
(509) 371-6430
Dr. Karl Muller - Chemical Imaging Design Lead

Karl Muller joined EMSL, the Environmental Molecular Sciences Laboratory, at PNNL in August 2010 as a Laboratory Fellow, and is currently the acting Chief Science and Technology Officer in the Physical and Computational Sciences Directorate at PNNL. Karl’s research focuses on the development and utilization of solid-state nuclear magnetic resonance (NMR) techniques, and his most recent studies are driven by outstanding and unresolved questions in environmental and materials science that require advanced characterization tools and multi-disciplinary approaches.

Dr. Karl Muller
(509) 371-6550
Dr. Leslie Blaha - Human-Centered Analytics Research Strategy Lead

Leslie Blaha is a Senior Cognitive Scientist in PNNL’s National Security Directorate. Leslie imagines a future where Smart Adaptive Interfaces will transform the way we use cognitive models to support and enhance human decision making, not just to study cognitive behaviors in laboratories.  

Dr. Leslie Blaha
(509) 371-7792
Dr. Luke Gosink - Electron Microscopy Use Case Co-Lead

Dr. Luke Gosink is a senior research scientist in the National Security Directorate at PNNL. Dr. Gosink received a B.S. in Chemistry and Ph.D. in Computer Science from the University of California at Davis. He leads a multi-million dollar research portfolio that focuses on developing novel machine learning and statistical aggregation methods that can detect complex events in large amounts of streaming, high-throughput data.

Dr. Luke Gosink
Dr. Shari Matzner - Electron Microscopy Use Case Co-Lead

Dr. Shari Matzner joined PNNL as a graduate intern in 2007 and is now a senior research engineer at PNNL’s Marine Sciences Laboratory.  Prior to joining the lab, she worked as an engineer in the space program at NASA’s Johnson Space Center, developing applications to support the astronauts aboard the space shuttle and developing space station simulators for training ground controllers. 

Dr. Shari Matzner
(360) 681-4577
Ryan LaMothe - Insider Threat Detection in the Cloud Use Case Lead

Ryan LaMothe joined PNNL in 2009, as a Researcher in PNNL’s National Security Directorate. Ryan is currently the Lead and Principal Investigator (PI) for PNNL’s Institutional Cloud Computing capability, supporting private, hybrid and public cloud offerings. He has over 16 years experience as a professional software architect and engineer, specializing in both research and enterprise distributed computing solutions.

Ryan LaMothe
(509) 371-6424
Karen Taylor, MPH, PMP - Insider Threat Detection in the Cloud Use Case Project Manager

Karen is a Scientist in the Data Sciences & Analytics Division at PNNL. She joined PNNL in February 2016 from Noblis, Inc., a not-for-profit science and engineering government consultancy where she worked as a biodefense subject matter expert and program manager.

Karen Taylor, MPH, PMP
(509) 372-6924
Dr. Dimitri Zarzhitsky - AIM Software Integration Lead

Dr. Dimitri Zarzhitsky, Ph.D. joined PNNL as a Research Engineer in July 2014.  He is responsible for the architecture, integration, and operation of the messaging infrastructure, in addition to software development resources and tools used by AIM projects.

Dimitri's current research focuses on cloud computing architectures and the application of emerging Internet-of-Things (IoT) technologies in computational sciences.

Dr. Dimitri Zarzhitsky
(206) 528-3206
Dr. Dustin Arendt - Principal Investigator

Dr. Dustin Arendt, Ph.D., is a senior visualization scientist in the Visual Analytics group at PNNL, joining the Laboratory in October 2014.

Dustin’s research interests covers the intersection of machine learning, networks, and visual analytics, with a particular focus on novel and intuitive ways to communicate dynamism in complex changing systems. He is pioneering novel and scalable techniques for using storylines to visualize dynamic structure in networks and other forms of data.

Dr. Dustin Arendt
(509) 371-6902
Dr. Lisa M. Bramer - Principal Investigator

Dr. Lisa M. Bramer, Ph.D. is a Research Scientist in the Applied Statistics and Computational Modeling Group at PNNL.

Lisa’s research has spanned over a variety of technical areas including large-scale statistical computing, proteomics, metabolomics, biomarker discovery, microbiome research, electrical energy market, climate forecasting, and machine learning. She joined PNNL in 2013.

Dr. Lisa M. Bramer
(509) 375-4553
George Chin - Dr. George Chin – Principal Investigator

Dr. George Chin, Ph.D., is a Chief Scientist in the Visual Analytics Group at PNNL. George has brought in and led a wide array of research and development projects in the areas of graph analytics, visual analytics, and machine learning for DOE and DoD clients. His most recent research work is focused on streaming dynamic graph analytics, where he is developing scalable methods for identifying cyberattack patterns in real-time computer network traffic, constructing probabilistic graphical models for tracking potential network attack vectors based on software vulnerabilities, and utilizing innovative temporal and geospatial graph metrics to identify leaders (or rabbits) and followers (or wolves) in co-location networks.

George Chin
(509) 375-2663
Dr. Sutanay Choudhury - Principal Investigator

Dr. Sutanay Choudhury is a Data Scientist in the Computational Science and Mathematics Division at PNNL.

Sutanay's research interests include graph databases, streaming algorithms, and text analytics.

Dr. Sutanay Choudhury
(509) 375-3978
Nick Cramer - Principal Investigator

Nick Cramer received his Computer Science degree from Central Washington University in 2001. Nick joined the Department of Energy's Pacific Northwest National Laboratory as a visual analytics researcher in 2001. His primary training and interest are in visual analytics, including extensive experience in information visualization, text analytics, and software engineering.

Nick Cramer
(509) 372-4728
Dr. Aritra Dasgupta - Principal Investigator

Dr. Aritra Dasgupta, Ph.D. is a research scientist in the National Security Directorate at PNNL.

Aritra's research focuses on developing and evaluating novel visualization methods and techniques for helping analysts explore, analyze, and make sense of complex data. His past and current research projects involve high-dimensional data exploration techniques, visual analytics, and communication techniques for climate science, and privacy-preserving data visualization

Dr. Aritra Dasgupta
(509) 372-6945
Lyndsey Franklin - Principal Investigator

Lyndsey Franklin joined PNNL as a software developer in October 2007. She works in User Experience and Design as part of the Visual Analytics group.

Lindsey's current focus is on understanding the Sensemaking process as a part of streaming data environments.

Lyndsey Franklin
(509) 372-4265
Alejandro Heredia-Langner - Principal Inevestigator

Project -- Population Based Hypothesis Generation and Control

Alejandro Heredia-Langner
(509) 372-4956
Dr. Nathan Hodas - Principal Investigator

Dr. Nathan Hodas, Ph.D. is a Senior Research Scientist in the Data Science and Analytics group at PNNL.

Nathan's research interests include behavioral modeling, social media analytics, machine learning, and physical modeling. He has significant experience connecting complex and messy real-world data with analytical models of physical, biological, and human systems.

Dr. Nathan Hodas
(509) 375-2862
Dr. Nicole Nichols - Principal Investigator

Dr. Nicole Nichols joined PNNL in 2015 as a staff scientist in the National Security Directorate. Her technical interests include audio and image processing, deep learning, non-negative matrix factorization, and machine learning. 

Dr. Nicole Nichols
(206) 528-3441
William Smith - Principal Inevestigator

William Smith has more than ten years of experience as a software industry professional with success directing a range of initiatives while participating in the planning, analysis, and implementation of software frameworks. 

William Smith
(206) 528-3356
Dr. Jeremy Teuton - Principal Investigator

Dr. Jeremy Teuton, Ph.D. joined PNNL in 2009 and is a staff scientist in the Computational Biology and Bioinformatics group. 

Jeremy’s research spans from adapting biological techniques to concepts for data/cyber analysis to include network resilience and cybersecurit,y and development of methods for deconvolution electoral load from remotely sensed data.

Dr. Jeremy Teuton
(509) 375-2233
Dr. Abhinav Vishnu - Principal Investigator

Dr. Abhinav Vishnu, Ph.D. is a senior research scientist at PNNL.

Abhinav's primary interests are in designing scalable, fault tolerant and energy efficient programming models with specific applications to machine learning and data mining algorithms. 

Dr. Abhinav Vishnu
(509) 372-4794
Dr. Svitlana Volkova - Principal Investigator

Dr. Svitlana Volkova is a Senior Research Scientist in the Data Sciences and Analytics Group at PNNL; she joined the Lab in October 2015.

Svitlana’s current research interests include forecasting the future using signals from social media e.g., events, opinion and emotion dynamics, infectious disease outbreaks; deception detection, information biases and factuality assessment in social and news media; multilingual social media analytics; and deep learning for natural language processing applications.

Dr. Svitlana Volkova
(509) 372-6585
Bobbie-Jo Webb-Robertson - Principal Inevestigator

Bobbie-Jo Webb-Robertson has over 15 years of experience working in the field of statistics. Within statistics, her core areas of research include predictive modeling, Bayesian data integration and quality assessment, largely in the field of computational biology.

Bobbie-Jo Webb-Robertson
(509) 375-2292
Tara Domstad - Operations Manager

Tara Domstad is currently a Lead Group Administrator supporting the Applied Statistics and Computational Modeling Group within the Computational & Statistical Analytics Division.

Tara Domstad
(509) 372-4811
Myra Wyant - Sr. Project Coordinator

Myra Wyant is currently a Senior Project Coordinator in the Computational & Statistical Analytics Division within the National Security Directorate. She provides financial support to the Applied Stats & Computational Modeling Group as well as the Analysis In Motion Initiative.

Myra Wyant
(509) 375-2024
Jill Schroeder - Business Intelligence Analyst

Jill Schroeder is a Business Intelligence Analyst in the Computational & Statistical Analytics Division within the National Security Directorate at PNNL.

Jill Schroeder
(509) 375-6563
Karen Smith - Marketing Communication Specialist

Karen joined PNNL in 2010 as a Marketing Communications Specialist. In her current role, she is the communications lead for the Computational & Statistical Analytics Division in the National Security Directorate, and the AIM communications lead.

Karen Smith
(509) 372 -4199
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