672010 SJC Santa Fe Institute Complex Systems Summer

6/7/2010 SJC Santa Fe Institute Complex Systems Summer School 2010 Dan Rockmore Director Dartmouth College, Departments of Mathematics and CS And Santa Fe Institute, External Faculty

SFI and Complex Systems Studies • Early 1980 s - Los Alamos “renegades” • 1984 – SFI founded • 1986 Global Financial Crisis – John Reed (Citicorp CEO) supports a small meeting of physicists and economists • Today – Leading center for interdisciplinary research in complex systems • CSSS - Cornerstone of SFI’s educational efforts for fostering understanding of complex systems 2

What is a Complex System ? Examples: • Physical Systems – Gases/percolation/spinglasses/weather • Social Systems – – – • Economies Markets Societies Internet Language Biological/Living Systems – – – – Ecosystems Disease Immune systems Chemical systems Brain Metabolic systems Nervous systems Goal: To find unifying themes and universal principles in these kinds of phenomena • Organization • Structure • Function … 3

What are Complex Systems? Properties: • • • Multiscale (hierarchical structure) Multiple time scales Individuality of Interacting components (on multiple scales) Diversity of specialized roles and functions Emergent Phenomena Nonlinearity Multiple stable states Adaptive/Dynamic/Evolved Resilience/Robustness Path dependence/contingency/hysteresis (actions and causes) Selection 4

Approach § Fundamentally interdisciplinary § Tools • Physics • Computer Science • Mathematics • Statistics

Techniques for studying Complex Systems • • Differential Equations (nonlinear dynamics) Network analysis Agent-based Modeling Simulation Statistical Learning Game Theory … 6

CSSS Goals Lots of introductions: 1. Problems and Approaches A. Introduction to spectrum of tools that have proved necessary for the study Complex Systems B. Introduction to some focused areas of CS research 2. Introduction to research peers and community 3. Introduction (? ) to collaborative, crossdisciplinary research

Self-organizing a research community • Lectures – faculty and participants (tutorials, working groups) • Projects • After Hours…. CSSS 2010 Wiki CSSS 2009 Wiki

What you like to think about… • • • • • biochemical networks cell signaling ecology conservation biology group cognition agents networks statistics nonlinear dynamics statistical mechanics economics finance ecology gene regulation machine learning gene regulation tumor development • protein dynamics • evolution • social behavior • molecular biology • cellular biology • animal behavior • information theory • information sharing • neuroscience • epidemics • quantum computing • systems biology • urban planning • architecture • human physiology • archaeology • evolutionary computation • artificial life • consciousness • language • religion • healthcare • chemical engineering • data clustering • international conflict prevention • early warning systems • gene function • biological switches • genetic circuits • biosphere regulation • chemical reaction simulations • chaos • spatial ecology • time series analysis • fisheries • None of us know about all of these things! • So, Be Brave! – ask questions! • So, Be Kind and Generous! – give answers!

Introduction to Collaborative Interdisciplinary Work Projects • Self-organized collaborative research efforts – Everyone participates on at least one! • Resource: Papers on the previous Wikis • Deadlines: – June 11: Research groups/topics – June 25: Presentations – September 1: Final papers

Introduction (? ) to Santa Fe and New Mexico • Local Sights - just down the hill… • Further sights

Encouragements • Commit to taking advantage of this opportunity • “SHOW UP!” • Stay mindful and tuned in • Keep an open mind • Contribute/Collaborate • Make friends… • Wear Your Name Tags!!

Introductions to Some folks • Tom Carter - Resident Faculty (CSSS) • Bruce Bertram- Events Manger • Barbara Ventrello - Administrative Assistant, Educational and International Programs • Liz Martinez - Director of Computing (SFI) • Ginger Richardson - VP of Education and Outreach (SFI) • John Paul Gonzalez- On-site administrative matters